he's getting way better than when he first started. You know what they say, practice makes perfect! I'm one to talk, I have had to do a couple of videos lately and upon playback I sound like a bumbling idiot lol.....In one, my head was bopping like one of those dogs you'd find on the parcel shelf of a 1965 Chrysler lololol
@@DPCohen That Cadillac will only sell for that price probably one time. Hoovie needs vehicles to make content in and on. If he just holds onto that Crown, sure it might be worth $40k, but it isnt going to actually make him any money while he owns it, which is the purpose of the channel.
Too much boost can wreck an engine! Glad you caught the timing belt tensioner. As you said, that would have had disastrous results! Thanks for the video.
A truly underrated channel. His explanatuions are straightforward for evryone to understand and there is no BS, just straight facts and excellent content. I wish you every success in your business and growing in subscribers.
Great job Wizard. I know relatively little about mechanics. I do keep my cars maintained but I'm lucky to have a mechanic cut from the same cloth. Been going to him 25 yrs. Fortunately his son is following in his footsteps. I like how you don't talk down to your viewers.
Great job Wizard..!! Check that cylinder head ...might have to shave off a few thousands?? That Lotus is a fun ride at 300 HP..! I worked with a guy that had a Lotus Turbo Esprit in San Jose CA in 1981. That car would fly down highway 101 over 150 MPH..
10:14. I believe the white smoke was caused by the piston sucking coolant into the cylinder followed by the coolant going out the exhaust, not exhaust gases going into the coolant.
Awesome video Wizard, just fantastic the level of detail you go into. On all my turbo cars I run a boost gauge. On my 1JZ, I've refreshed the head and upgraded the head studs, to avoid what has happened with the Lotus. It was a good thing you caught the tensioner before it killed the engine. Nice one.
Cool video Wizard! Tyler is lucky to have you to fix his messes lol! That Lotus is pretty cool didnt notice until you just said its an S4S which is quite rare
I work on my own cars and come to see that a simple fan belt change can uncover tons of "just in time-I dodged a bullet on that one". Good that you have understanding clients. I remember the Sears repair fiasco where they were accused of unnecessarily replacing parts. After the dust settled on that one, there was a complaint of a water pump that went out after a timing belt had been replaced the week prior. Damn...you just can't win for lose.
I wish you could get an adapter for the camera so you could film more of these repairs. There aren't many repair videos or illustrations on Bentley Turbo R's on RUclips. If i wanted to tackle these jobs myself, those videos would have been a huge help.
This microphone setup you're using now is excellent, it speaks volumes about you that you look for the best tool for a job where it matters. Quality work will see you through any storm. As for the lotus, I would certainly agree that without relevant supporting modifications, tuning a car is a silly idea. Did this tuner check that the fuel pump can support extra flow? Is the differential capable of holding whatever power it now has? Has the turbo been checked for play? Is the intercooler system clean and efficient? Are there any vacuum leaks? Are the hoses in serviceable condition? How strong is the transmission? The list goes on. I would be wary to make sure that any car is in just fully serviced condition before tuning it, all new fluids, hoses, gaskets, belts etc before allowing anyone access to the ECU. Introducing extra strain to a system will always expose weaknesses and deficiencies in maintainance and design, no matter what it is. The key is striking balance, always.
@@Dave.S.TT600 That's certainly what I've heard for this car. I was trying to be more general in my assessment so it could apply to many cars, but you're right.
This lotus has a modified USA (I forget which) Early ECU ( with a Lotus module fitted) which you can easily get boost readings from the OBD port using normal type software readily available I owned a Lotus Esprit Turbo SE 1990 model the S4 and S4a are based on this
Question: how do you “tune” an early model Esprit turbo, or raise the boost level? My experience with Japanese turbo cars is things like piggyback computers or full stand alone units, and electronic boost controllers or spring/vacuum cheats to raise boost, and that always happens with at a boost gauge, an EGT or preferably a wideband gauge. I don’t understand how you “tune” a car without these things.
ultrablue2 hi there - this is a early ECU with a Lotus spec module. So it is not possible to download or control the parameters. You have to unsolder the EPROM from this module - put a IC socket in and new firmware on a EPROM. I did this to mine with an S4a spec remap without the 'stumble' issue (to do with the A/C)
Great information and PROPER diagnosis. I know it’s tempting to turn up the boost but these tuners are not engineers for specific car brands. These guys are hired paid well to design these cars for a reason
I just bought one of the Wizards buy this cars. I got a 2007 Mercury Grand Marquis with 40000 miles on it for $2900. Had the car inspected and it in excellent shape. The Wizard recommended the Crown Vic but the Marquis is the same car just with a different name and a few more options.
I’d like to see a segment on the steps you go through to determine if the head needs to go to the machine shop, and how you prepare the surfaces for the new head gasket.
If I lived closer to the Wizard I would for sure have him fix my exotic vehicle, I'd just bring it in one day unannounced and say fix it, now! Haha, J/K Wiz! Great work!
That’s why tuning a car has always scared me wizard, I dalydrive a 2013 Subaru legacy with the flat six and it’s been a great car no oil burning issues no head gasket issues and I have 98,000 miles but I change my oil and all my fluids religiously !
Those 4 cylinder 2 and 2.2L Lotus engines were well known for the no.4 cylinder to run hotter than the rest, although the later engines like this one, were better in this respect . Combined with over-boost, I suspect it may have suffered pre-ignition/pinking on that cylinder, which pushed out the gasket.
Sounds like detonation in that cylinder as opposed to simply too much boost. I’d take a good look at that fuel injector (& associated wiring), have the set cleaned/flow-tested.
My grandfather taught me much of what I know about being a mechanic. ,Going to school taught me much more still. I know that to do a job right I need to use the right tool for the right job. That said, your diagnostic skills are spot-on. This is brilliant. But making sur that head is properly planed and true is still important, Nonetheless, your diagnosis rings true.
Last and only time I got one of my cars tuned it ended up costing me a new engine, despite that particular engine type had a really good reputation of being able to take a tune and despite the tune I had done was not even close to anything over the top. It might have been a one in a million incident, but that have always been in the back of my mind every time I have had the urge of tuning since, and so far I have not gotten a car tuned, and I likely never will.
Increased boost and stock head stud is usually reason why gasket leaks on Nissan 200sx S13 (CA18DET). Fix for us are stronger ARP head studs, better gasket and permatex (spray on seal for gaskets) just to be sure.
Gee, I'll just have to check my two Bentley's.......the best things the Brits every built were the Triumph motorcycles (early) and the Spitfire. And....I found out that British girls have left-hand threads..... Nice looking engine. I had a 460 Ford that I equipped with water/alcohol injection to quell detonation. When I tore the engine down at about 200,00 towing miles, the cylinders/pistons were clean like the chamber you showed where the blown head gasket leaked. The water molecule expands 1700 times in going from a liquid to a gas I found out....interesting. Does the turbo have an adjustable waste gate?
I would check the fuel injectors. The LOTUS will go into open loop at 95% throttle. I have changed the cheap GM sourced injectors with quality matched injectors on my 1989 LOTUS Esprit.
@@williamohlmeyer6988 well the overboost would indicate that the current tune is not safe so a reflash to OEM would stop a repeat of blown head gasket etc.
@@bigbird2100 you are assuming that is what it is. The car was on the dyno 40 times and nothing about that tune showed up on the dyno nor did any issues show up on the car's onboard diagnostic laptop. That head is capable of 18-19 PSI and it was tuned to 14 with all new hardware. The car has electronic safeguards in place that dump boost if detonatoin or an overboost is detected. which means whatever happened was sudden and unavoidable.
@@williamohlmeyer6988 so you tuned the lotus ,I watched wizards video and from the assumption he made from the available data I "commented" what would be the safest way forward,maybe forward your data to the Wizard I'm sure he would appreciate it 👍
Rear cylinders are prone to heat warpage, not only from coolant circulation being it's the last cylinder but look where your exhaust manifold routing is. Timing belt idler and tensioner bearings like to disintegrate because of high heat. Make sure you replace everything For timing belt bearings, followers and guides. Plus water pump. Use your vacuum gauge to check for boost pressure. Should be between 10 psi and 13 PSI.
On the Lotus are you going to install the ARP head stud kit and current spec HD head gasket from JAE? Also are you going to check the distance each of the cylinder liners are protruding above the block to make sure they are all as per factory specs? I am sure you realize that since these are cylinder liner inserts that they can have slightly different manufacturing tolerances and they have to all have a certain amount of "nip" ticking proud of the upper surface of the cylinder block. What boost controller will you use on the car?
If the owner wants power it might be better putting a Toyota or Honda closed deck engine back in. You aren't ever going to get reliable big power out of a design that was never originally meant to be turbocharged - those floating liners - just no good for big boost.
People that know things will dial it back from peak tune, just a tad, to drastically reduce cylinder pressure. It could cost a couple ponies but it is worth it for reliable performance. Max boost psi remains unchanged, it should be noted, unless you plan to run a different setting for the street using a dual boost setup like one from turbosmart.
With the lotus guy ask him how fast he was going and what speed he was averaging, as it sounded like it was in daily traffic when it happened so just reving the motor up slowly and to what speed it should be at in gears 1 and 2 in normal driving should give you the same boost amount that caused this on the gauge so you can tune it down.
As a Bentley owner I can confirm all these faults that many reluctant owners will not spend the money on and cars deteriorate. Once you get your head around brake pumps,gas spheres,various seals,rack,bottom ball joints and suspension rubbers you have a superb car. at a fraction of new price.
Abou tyhat Lotus: Somewhere on that turbo there has to be a wastegate actuator. No idea how it's actuated in the lotus but it's usually a canister with a springloaded membrane inside that's connected to the wastegate valve with a rod. When the membrane inside the actuator has broken/torn the wastegate valve can not be opened and there would be no boostcontrol meaning that the boostlevel can rise above the intended level = overboost So i would absolutely test and verify if that actuator is still working like it should.
Actuator is brand new. Is designed to take multiple springs to control the amount of gap the waste gate opens. It is vacuum driven and electronically monitored by the ECU. All safeguards remained in place during the tune. It was dynoed 40 times checked and rechecked. No issues on the dyno.
Mrs. Wizard does a great job with the camera. I love your video's their informative and interesting. but I've been watching from the beginning of your channel... real fan!! I would like to see you do a video on C5 corvette's from a mechanics point of view. years to buy, not buy and why. I know there are other videos, but I would like to see your take. thanks again!
Just because the head gasket failed doesn’t mean the tune was bad. It was probably just more cylinder pressure then the OEM gasket could handle. Upgrade to a commetic or multilayer gasket and it will probably take more boost then the bottom end is good for. I’d assume the Wizard will do both gaskets while it’s apart.
Wizard, hope you purged all the old fluid out of Hoovie's Bentley. If the wrong fluid is put in the system the seals fail. The fact that every seal failed suggests the wrong fluid was put in the system. Purging and replacing makes sure all the old fluid is out of the system and you have all correct new fluid and no chance of future issues with the seals.
The Lotus certainly suffered from to much cylinder pressure in that cylinder. However the fire rings can blow out due to pinking as well. A bit hard to tell without seeing the all the spark plugs. Even if all the others look good being an end cylinder it may be a hot spot. Conclusive proof is unavailable due to the cleaned combustion chamber and plug inspection.
Overboost, it leaned out the fuel mix, spark knocked under load, cylinder pressure spiked and bye bye head gasket. Done it dozens of times back in my 4G63T days. Absolutely caused by sloppy tune/bad boost control.
If its "tuned" by just scaling the fuel enrichment across the board and still has factory turbo and waste gate, need to test it under load once its put back together and make sure you don't have a boost creep issue, making boost controller a mute point, also has potential to over speed the turbo which of course would be another expensive mistake of sloppy tuning.
"Not sure what happened, I just had the car tuned" is what everyone with a blown head gasket will say in a performance car. Almost certain it's running too much timing, for the boost level on the engine for the gas used. It must be right on the edge since it appears detonation occurred in that cylinder to blow the gasket while the others did not. The balance of the intake might be slightly off causing that cylinder to be a bit leaner than the others.
An old Lotus blowing a head gasket is normal, if you missed a gear and over rev'd them they would blow head gaskets and crack cam followers regular as clockwork
@Car Wizard I'm so addicted to your content. Please keep it coming. I'm more interested in your vids on what is useful to a working joe like myself, than stuff about high-end European exotics but I watch those too....a guy can dream. The reason I'm posting, and I don't know if you respond to direct questions, or even have time to read them, but I'd be very interested to know your thoughts on an oil catch can installed in the PCV system on a GM 2.4L Ecotec. I have a 2012 GMC Terrain, and am seriously considering installing one (simply because I don't think oil, even in small amounts, has any business being sucked into the throttle-body/air intake). I've not read anything about potential problems with such a device, but thought if anyone had insight, it'd be you. TIA
i agree it was probably overboost BUT and its a big but the open deck on this engine is a real prima donna even if if it looks straight get it decked get all new fastners to hold it down , make sure everything is surgically clean on assembly these engines will not tolerate any half measures like your average engine will , good luck . Also waterless coolant is a really sound investment on such a fussy engine it expensive but keeps dissimilar corrosion at bay
that rolls royce specialty tool seems like it can be done with a 2 inch stainless pipe and and angle grinder, but i guess with what hes charging the tool comes with the estimate
The plastic parts are sacrificial, designed to break and save the motor or other more expensive parts in case of an obstruction. They may stop fingers being removed too.
Wizard, have you thought about doing a little bit of post processing and may e add arrows when you are showing a part on the engine? I think that could help users know exactly what you are talking about.
The Wiz is an awesome communicator. Thanks for the knowledge sir
he's getting way better than when he first started. You know what they say, practice makes perfect! I'm one to talk, I have had to do a couple of videos lately and upon playback I sound like a bumbling idiot lol.....In one, my head was bopping like one of those dogs you'd find on the parcel shelf of a 1965 Chrysler lololol
The next video is gonna be the Wizard ringing Tyler's neck for buying two more Northstar engines.
Hoovie got buggered on that deal. I'm surprised he can walk.
hahahahahahahaha 👍😂👍
@@DPCohen true, but he did get $20,000 too!!!!
@@DPCohen You're right, and those Cadillacs are garbage!!!!!!!
@@DPCohen That Cadillac will only sell for that price probably one time. Hoovie needs vehicles to make content in and on. If he just holds onto that Crown, sure it might be worth $40k, but it isnt going to actually make him any money while he owns it, which is the purpose of the channel.
Too much boost can wreck an engine! Glad you caught the timing belt tensioner. As you said, that would have had disastrous results! Thanks for the video.
When your timing belt tensioner sounds like a baby's rattle, definitely a good thing to change!!
Your explanations make it appear so easy to fix these exotic cars. Wish I had your skill set!
Well, apart from looks, Lotuses aren't really exotic...
You have come on you mouth. ... Take it easy .
@@theamericanpitbullterrier6063 What? Now in english please.
@@GlamStacheessnostalgialounge you have poop on your nose from all that ass kissing. There is your English plain as day .
Wow such a calm clear thinking problem solver. LOVE this channel.
A truly underrated channel. His explanatuions are straightforward for evryone to understand and there is no BS, just straight facts and excellent content. I wish you every success in your business and growing in subscribers.
It’s a privilege to watch you explain in detail what goes wrong with these vehicles and how you repair them. Nothing but respect for you👌🏻
Appreciate the love you put into these cars.
Great job Wizard. I know relatively little about mechanics. I do keep my cars maintained but I'm lucky to have a mechanic cut from the same cloth. Been going to him 25 yrs. Fortunately his son is following in his footsteps. I like how you don't talk down to your viewers.
Hey Wizard, just have to say, your delivery/narrative is MUCH smoother.....way to go!
Nice way to explain the problems (and the solutions, of course).
Absolutely loved the Lotus overboost discussion. I feel smarter after listening to CarWiz's methodical renditions.
Great job Wizard..!! Check that cylinder head ...might have to shave off a few thousands??
That Lotus is a fun ride at 300 HP..! I worked with a guy that had a Lotus Turbo Esprit in San Jose CA in 1981. That car would fly down highway 101 over 150 MPH..
Can’t get enough of this channel!!! Thanks wizard
The Car Wizard is awesome!! … A wealth of knowledge. Love his "Cars to Buy / Cars to STAY AWAY" …....
10:14. I believe the white smoke was caused by the piston sucking coolant into the cylinder followed by the coolant going out the exhaust, not exhaust gases going into the coolant.
Extremely informative video 👍👍. I love these cars and have heard about various issues but never seen detailed videos. Great job man. Keep it up!
Great job on the Lotus Wizard, you are wise beyond your years.
Thanks, David, good stuff on the Lotus.
I know I've said this hundreds of times but... That lotus is gorgeous!
Awesome video Wizard, just fantastic the level of detail you go into. On all my turbo cars I run a boost gauge. On my 1JZ, I've refreshed the head and upgraded the head studs, to avoid what has happened with the Lotus.
It was a good thing you caught the tensioner before it killed the engine. Nice one.
Thanks so much Car Wizard...… I, and "WE" all appreciate your "KNOWLEDGE" and "EXPERIENCE".
I'm surprised you're not on Twitter. Your videos are very educational and they recap things from when I was in mechanic school. :)
This is my favorite video that you have done.
Cool video Wizard! Tyler is lucky to have you to fix his messes lol! That Lotus is pretty cool didnt notice until you just said its an S4S which is quite rare
Practical and pragmatic. As ever. Fantastic!
love the Lotus head gasket tech breakdown; very well explained. THANKS
Love the knowledge and how you convey it, thanks Wizard.
Outstanding video, super explanations for everything you found wrong and how fixes either have been or will be accomplished.
Ford had the same problem with window motors with 3 plastic balls that wood break so I always put 7/16 nuts to replace it . And it works good as new
I work on my own cars and come to see that a simple fan belt change can uncover tons of "just in time-I dodged a bullet on that one". Good that you have understanding clients. I remember the Sears repair fiasco where they were accused of unnecessarily replacing parts. After the dust settled on that one, there was a complaint of a water pump that went out after a timing belt had been replaced the week prior. Damn...you just can't win for lose.
Any sane person will do a water pump change with a timing belt (since labor is now $0) but I guess you can't fix stupid.
I wish you could get an adapter for the camera so you could film more of these repairs. There aren't many repair videos or illustrations on Bentley Turbo R's on RUclips. If i wanted to tackle these jobs myself, those videos would have been a huge help.
though that would be great it'll be bad for business
You my friend are going to be really famous someday! I've got a feeling!
This microphone setup you're using now is excellent, it speaks volumes about you that you look for the best tool for a job where it matters. Quality work will see you through any storm.
As for the lotus, I would certainly agree that without relevant supporting modifications, tuning a car is a silly idea.
Did this tuner check that the fuel pump can support extra flow? Is the differential capable of holding whatever power it now has? Has the turbo been checked for play? Is the intercooler system clean and efficient? Are there any vacuum leaks? Are the hoses in serviceable condition? How strong is the transmission? The list goes on.
I would be wary to make sure that any car is in just fully serviced condition before tuning it, all new fluids, hoses, gaskets, belts etc before allowing anyone access to the ECU.
Introducing extra strain to a system will always expose weaknesses and deficiencies in maintainance and design, no matter what it is. The key is striking balance, always.
the gearbox (2nd gear) i think, is the weak point. It's a Renault based gearbox at that point ..before, Esprits had a Citroen based gearbox/Transaxle
@@Dave.S.TT600 That's certainly what I've heard for this car. I was trying to be more general in my assessment so it could apply to many cars, but you're right.
This lotus has a modified USA (I forget which) Early ECU ( with a Lotus module fitted) which you can easily get boost readings from the OBD port using normal type software readily available
I owned a Lotus Esprit Turbo SE 1990 model the S4 and S4a are based on this
Question: how do you “tune” an early model Esprit turbo, or raise the boost level? My experience with Japanese turbo cars is things like piggyback computers or full stand alone units, and electronic boost controllers or spring/vacuum cheats to raise boost, and that always happens with at a boost gauge, an EGT or preferably a wideband gauge. I don’t understand how you “tune” a car without these things.
ultrablue2 hi there - this is a early ECU with a Lotus spec module.
So it is not possible to download or control the parameters.
You have to unsolder the EPROM from this module - put a IC socket in and new firmware on a EPROM.
I did this to mine with an S4a spec remap without the 'stumble' issue (to do with the A/C)
Great information and PROPER diagnosis. I know it’s tempting to turn up the boost but these tuners are not engineers for specific car brands. These guys are hired paid well to design these cars for a reason
I just bought one of the Wizards buy this cars. I got a 2007 Mercury Grand Marquis with 40000 miles on it for $2900. Had the car inspected and it in excellent shape. The Wizard recommended the Crown Vic but the Marquis is the same car just with a different name and a few more options.
They are both excellent vehicles.
I’d like to see a segment on the steps you go through to determine if the head needs to go to the machine shop, and how you prepare the surfaces for the new head gasket.
As for cleaning the safest way is scraping. As for resurfacing you put a machinist grade steel rule on it and check it with a feeler gauge.
I wish if we have a mechanic like Wizard in New Zeland.
We do just depending on where you live.
Any where. To find a mechanic who diagnoses rather just replaces parts is a blessing.
Second that: Portland, OR
If I lived closer to the Wizard I would for sure have him fix my exotic vehicle, I'd just bring it in one day unannounced and say fix it, now! Haha, J/K Wiz! Great work!
open deck on that lotus block. reminds me of the new focus RS and the head gasket problems owners of that car have been experiencing...
That’s why tuning a car has always scared me wizard, I dalydrive a 2013 Subaru legacy with the flat six and it’s been a great car no oil burning issues no head gasket issues and I have 98,000 miles but I change my oil and all my fluids religiously !
We fitted a boost gauge years ago on ours! Crazy not to have one on a car like this.
I so glad I have guy that can fix my truck he willing too do drums and disc for 300 bucks plus parts
Those 4 cylinder 2 and 2.2L Lotus engines were well known for the no.4 cylinder to run hotter than the rest, although the later engines like this one, were better in this respect . Combined with over-boost, I suspect it may have suffered pre-ignition/pinking on that cylinder, which pushed out the gasket.
Great video, especially on the boost. Why this car needs that is beyond me
Great video again, thank you David!
Sounds like detonation in that cylinder as opposed to simply too much boost. I’d take a good look at that fuel injector (& associated wiring), have the set cleaned/flow-tested.
Excellent. Thanks Dave
My grandfather taught me much of what I know about being a mechanic.
,Going to school taught me much more still. I know that to do a job right I need to use the right tool for the right job.
That said, your diagnostic skills are spot-on. This is brilliant. But making sur that head is properly planed and true is still important, Nonetheless, your diagnosis rings true.
Last and only time I got one of my cars tuned it ended up costing me a new engine, despite that particular engine type had a really good reputation of being able to take a tune and despite the tune I had done was not even close to anything over the top.
It might have been a one in a million incident, but that have always been in the back of my mind every time I have had the urge of tuning since, and so far I have not gotten a car tuned, and I likely never will.
Love the z71 in the back
Increased boost and stock head stud is usually reason why gasket leaks on Nissan 200sx S13 (CA18DET). Fix for us are stronger ARP head studs, better gasket and permatex (spray on seal for gaskets) just to be sure.
Great video and channel, really like your approach.
Gee, I'll just have to check my two Bentley's.......the best things the Brits every built were the Triumph motorcycles (early) and the Spitfire. And....I found out that British girls have left-hand threads..... Nice looking engine. I had a 460 Ford that I equipped with water/alcohol injection to quell detonation. When I tore the engine down at about 200,00 towing miles, the cylinders/pistons were clean like the chamber you showed where the blown head gasket leaked. The water molecule expands 1700 times in going from a liquid to a gas I found out....interesting. Does the turbo have an adjustable waste gate?
Another great contribution the the buyers guide vlog
Love the chrome dome!
I would check the fuel injectors. The LOTUS will go into open loop at 95% throttle. I have changed the cheap GM sourced injectors with quality matched injectors on my 1989 LOTUS Esprit.
Reflash the lotus ECU to OEM settings, then great it properly tuned.
Sean Roberts how do you know it isn’t properly tuned? Do you have some kind of secret knowledge?
@@williamohlmeyer6988 well the overboost would indicate that the current tune is not safe so a reflash to OEM would stop a repeat of blown head gasket etc.
@@bigbird2100 you are assuming that is what it is. The car was on the dyno 40 times and nothing about that tune showed up on the dyno nor did any issues show up on the car's onboard diagnostic laptop. That head is capable of 18-19 PSI and it was tuned to 14 with all new hardware. The car has electronic safeguards in place that dump boost if detonatoin or an overboost is detected. which means whatever happened was sudden and unavoidable.
@@williamohlmeyer6988 so you tuned the lotus ,I watched wizards video and from the assumption he made from the available data I "commented" what would be the safest way forward,maybe forward your data to the Wizard I'm sure he would appreciate it 👍
That’s amazing the brake pumps I learnt some more today:
Rear cylinders are prone to heat warpage, not only from coolant circulation being it's the last cylinder but look where your exhaust manifold routing is. Timing belt idler and tensioner bearings like to disintegrate because of high heat. Make sure you replace everything For timing belt bearings, followers and guides. Plus water pump. Use your vacuum gauge to check for boost pressure. Should be between 10 psi and 13 PSI.
On the Lotus are you going to install the ARP head stud kit and current spec HD head gasket from JAE? Also are you going to check the distance each of the cylinder liners are protruding above the block to make sure they are all as per factory specs? I am sure you realize that since these are cylinder liner inserts that they can have slightly different manufacturing tolerances and they have to all have a certain amount of "nip" ticking proud of the upper surface of the cylinder block. What boost controller will you use on the car?
If the owner wants power it might be better putting a Toyota or Honda closed deck engine back in. You aren't ever going to get reliable big power out of a design that was never originally meant to be turbocharged - those floating liners - just no good for big boost.
The *last* car I would ever "tune" without modifying the original engine would be an old Lotus.
Actually they were known for glass transmission and terrible air conditioning. The engines were pretty solid
@@eaglewi were they Toyota engines
But one part of "solid engine" is correct tuning. It's why you do not, ever, put bigger turbos on certain Japanese sport sedans.
@@neilmurphy845 only in newer ones. Not the esprit
@webnothing hum no mate, Elise and exige has Toyota engine except the s1 with the rover k-series
People that know things will dial it back from peak tune, just a tad, to drastically reduce cylinder pressure. It could cost a couple ponies but it is worth it for reliable performance. Max boost psi remains unchanged, it should be noted, unless you plan to run a different setting for the street using a dual boost setup like one from turbosmart.
With the lotus guy ask him how fast he was going and what speed he was averaging, as it sounded like it was in daily traffic when it happened so just reving the motor up slowly and to what speed it should be at in gears 1 and 2 in normal driving should give you the same boost amount that caused this on the gauge so you can tune it down.
over-boost or a hydrolock situation?...probably over-boost but check the piston/deck height too
Great video Wizard.. Have you used your GMC tow-truck yet?
As a Bentley owner I can confirm all these faults that many reluctant owners will not spend the money on and cars deteriorate.
Once you get your head around brake pumps,gas spheres,various seals,rack,bottom ball joints and suspension rubbers you have a superb car. at a fraction of new price.
Abou tyhat Lotus: Somewhere on that turbo there has to be a wastegate actuator. No idea how it's actuated in the lotus but it's usually a canister with a springloaded membrane inside that's connected to the wastegate valve with a rod. When the membrane inside the actuator has broken/torn the wastegate valve can not be opened and there would be no boostcontrol meaning that the boostlevel can rise above the intended level = overboost
So i would absolutely test and verify if that actuator is still working like it should.
Actuator is brand new. Is designed to take multiple springs to control the amount of gap the waste gate opens. It is vacuum driven and electronically monitored by the ECU. All safeguards remained in place during the tune. It was dynoed 40 times checked and rechecked. No issues on the dyno.
Mrs. Wizard does a great job with the camera. I love your video's their informative and interesting. but I've been watching from the beginning of your channel... real fan!! I would like to see you do a video on C5 corvette's from a mechanics point of view. years to buy, not buy and why. I know there are other videos, but I would like to see your take. thanks again!
Just because the head gasket failed doesn’t mean the tune was bad. It was probably just more cylinder pressure then the OEM gasket could handle. Upgrade to a commetic or multilayer gasket and it will probably take more boost then the bottom end is good for.
I’d assume the Wizard will do both gaskets while it’s apart.
Wizard, hope you purged all the old fluid out of Hoovie's Bentley. If the wrong fluid is put in the system the seals fail. The fact that every seal failed suggests the wrong fluid was put in the system. Purging and replacing makes sure all the old fluid is out of the system and you have all correct new fluid and no chance of future issues with the seals.
I kept waiting for Tyler Hoovie to pop out from somewhere.
The Lotus certainly suffered from to much cylinder pressure in that cylinder. However the fire rings can blow out due to pinking as well. A bit hard to tell without seeing the all the spark plugs. Even if all the others look good being an end cylinder it may be a hot spot. Conclusive proof is unavailable due to the cleaned combustion chamber and plug inspection.
Q: "What commonly fails with these?"
A: "It's English. Everything..."
X-D
Overboost, it leaned out the fuel mix, spark knocked under load, cylinder pressure spiked and bye bye head gasket. Done it dozens of times back in my 4G63T days.
Absolutely caused by sloppy tune/bad boost control.
If its "tuned" by just scaling the fuel enrichment across the board and still has factory turbo and waste gate, need to test it under load once its put back together and make sure you don't have a boost creep issue, making boost controller a mute point, also has potential to over speed the turbo which of course would be another expensive mistake of sloppy tuning.
Bentley and Lotus- yet loves the 3.8 Buick....David is the Wizard...
Good camera work!
"Not sure what happened, I just had the car tuned" is what everyone with a blown head gasket will say in a performance car. Almost certain it's running too much timing, for the boost level on the engine for the gas used. It must be right on the edge since it appears detonation occurred in that cylinder to blow the gasket while the others did not. The balance of the intake might be slightly off causing that cylinder to be a bit leaner than the others.
Really enjoy your videos thanks for Sharing
Great video! I love you, Man!
Does it help to prevent blown gaskets to re-torque the head bolts occasionally? Thanks Wizard, great vids!
@@nobisspectare3651 OK, Thanks!
Lotus:- Lots Of Trouble, Usually Serious
An old Lotus blowing a head gasket is normal, if you missed a gear and over rev'd them they would blow head gaskets and crack cam followers regular as clockwork
@Car Wizard I'm so addicted to your content. Please keep it coming. I'm more interested in your vids on what is useful to a working joe like myself, than stuff about high-end European exotics but I watch those too....a guy can dream.
The reason I'm posting, and I don't know if you respond to direct questions, or even have time to read them, but I'd be very interested to know your thoughts on an oil catch can installed in the PCV system on a GM 2.4L Ecotec. I have a 2012 GMC Terrain, and am seriously considering installing one (simply because I don't think oil, even in small amounts, has any business being sucked into the throttle-body/air intake). I've not read anything about potential problems with such a device, but thought if anyone had insight, it'd be you. TIA
"What I replaced in the windows" Did you update the drivers?
Samira Peri he said not yet since he’s afraid of hitting the doors on the side of the lift
ahahaha that's funny right thar!
i agree it was probably overboost BUT and its a big but the open deck on this engine is a real prima donna even if if it looks straight get it decked get all new fastners to hold it down , make sure everything is surgically clean on assembly these engines will not tolerate any half measures like your average engine will , good luck . Also waterless coolant is a really sound investment on such a fussy engine it expensive but keeps dissimilar corrosion at bay
Thank you from Russia.
Man i wish the wizard lived close to me. How about a move to South West Florida.
that rolls royce specialty tool seems like it can be done with a 2 inch stainless pipe and and angle grinder, but i guess with what hes charging the tool comes with the estimate
6:11 could the plastic gear have been made of metal? could a metal gear be made/CNC'd to replace the plastic gear?
You want them plastic in case fingers get in the way, the plastic won't shear them off.
The plastic parts are sacrificial, designed to break and save the motor or other more expensive parts in case of an obstruction. They may stop fingers being removed too.
Great follow up video Wizard always good to know what you find on these cars. Cause, Effect and Remedy. Little Ayussie Follower ....
Hi Wizard, is over-boost caused by the turbo, or is there another cause? Love your show. Merry Christmas 🎄
Now I don’t feel so bad about my windows on the Rolls being slow.
Here is what I think: In the Car Wizard, we Trust. haha. Good info on that Lotus engine issue.
Wizard, have you thought about doing a little bit of post processing and may e add arrows when you are showing a part on the engine? I think that could help users know exactly what you are talking about.
He's like the Bob Ross of car repair...
What are the dimensions on that brake pump shell tool, for those guys who can mill one out right pretty?
I'd like to know too. The cost of that tool is ridiculous really!
If you're going to tinker with an old engine to push power, you're going to find the weak link, quickly.