We Have Clearance, Clarence! Checking Our EJ205 Oil Clearance And Ring Gap
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- Опубликовано: 29 авг 2024
- We have our 2002 Subaru WRX engine back from the machine shop and it's time to go through and verify that we have the parts we need to rebuild this bad boy. Step one is measuring the oil clearance on our mains and rods followed by checking the end gap on our piston rings. As Davin likes to say, it's not enough to just assume that factory numbers and stock parts will line up properly. It pays to do the work and measure now rather than be sorry later.
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Hi.. this is the 3rd time im commenting this..
Please smoothen out the oil galley port that leading towards crankshaft journal no.3 which subsequently will supply oil to conrod no.2 and no.3
Subaru is sharing oil supply for those 2 conrods.. while conrod 1 and 4 have their own oil supply line... This will ensure enough oil flow going to those conrods!...
Please.. please do this.. atleast smoothen out and radius on the oil galley...
2nd, port the oil pump rotor internal passage leading towards outlet...
3rd, port out oil return passage on the cylinder heads ensure smooth radius and free from cast flashing... This will helps oil to return to sump quicker...
These 3 simple small hand porting jobs will helps the better oilling for subaru engine
If I just could anyhow support your answer to be seen better ...
I'm not Subaru-experienced, but these recommendations are easy to implement. When I K-swapped my Miata 2 years ago, I ported the outlet of a brand new oil pump because it had a sharp edge -- stuff you would do on ANY rebuild.
You definitely want to follow that guide that shows the smaller clearance. These are aluminum alloy blocks and they grow when they get up to temperature. This means that your main clearance will grow also. A lot of times, builders use a main clearance that is too large (0.002"+) and when the block gets up to temp, you have a clearance that is more like 0.004". This means the pressure in those bearings decrease, causing the flow to the rod bearings to decrease as well, and you end up with the infamous subaru rod knock.
As others have said, please PLEASE do not ignore the advice to get that thing re-honed with a torque plate!
Align hone and torque plates are 2 critical process that will make or break a Subaru re-build and the reason why so many dont last as long as factory builds.
At the same time, bad machine work is a lot of why rebuilds don't last as long as factory. People like to "fix" too many things. Check first and only machine if necessary. Just my opinion. I'm not an expert rebuilder.
Taking the "ow subarus are hard to build", and throwing it out the window. Its just an engine. Take your time, read the technical data and do it by the book. Awsome content
Always enjoy Davin’s videos. Lots of great technical info and very well edited. Thx y’all!!
I'm not even a car person, but these are hyper-fascinating videos to watch. I've always wanted to tear down an engine and rebuild it, even if it goes no where.
Enjoying watching these as I own a Subaru and the boxer torn apart and put back together is pretty rad. Thank you
Yeah, just to see how the generic subi boxer is put together was a huge plus. Even the single cammers will be generally built in the same wzy 'cause they were built in the same factory.
If you increase the clamp load on the case halves you would need to line bore the bearing journals. Same as adding studs to the heads and having to re-bore the cylinders with a torque plate to ensure there is no distortion with added clamp
🎯
Exactly...it needs to be line bored again to ensure its perfectly round...
@@beatboxingboy1 or leave it and all the labour and parts are at risk 🤷 haha
thanks so inn the end effect they upsell their product which is knowingly causing damage.
It will b fine internet wanna be know it all's. I googled this n watched this n that n this guy n that say this ,😱
Should find the factory service manual. Subaru ones aren't hard to find and are usually broken down into nice detail with all the specs listed during assembly.
6:30 yup been here before... it's at this point we spent lots. Car ended up a racecar (STI sadden JDM 98) finished up around thee 600hp.. fun so vary fun 😄
My Subaru WRX Service Manual has a Supplement for STI shows this for Crankshaft oil clearance
Standard 0.010 - 0.030 (0.0004 -0.0012) Limit 0.040 (0.0016)
Which for me sounds pretty tight, but as other's have said, being a aluminum case , it is going to open up as the block heats up.
I have been watching these videos since before the subaru series, but as a subaru guy, this is my jam! Had bad rings in my o5 XT Forester and this video inspired me to rebuild my shortblock on my own.
If the block is used, the first thing that should be done is .001" off each of the case halves, then the main journal reamed with a special tool. You can line hone it but it is much easier with the correct tool (what the german guy subi performance. ALSO, the case halves should have been torque plate honed as the bore distort. They will also be out of round due to being used previously. Lots of mistakes in this series. i hope it stays toegther, but there s areason why they say suabru engines are not easy to build................. his series has highlighted a few.
Davin, does the new algorithm know how terrific these videos are? Great job.
I did my project before watching, new coils and plugs on my car. Much bigger pain than it needs to be thanks to a big fat water to air intercooler sitting on top and covering all the plug holes. And it was hot. Oh well, now I can sit in the A/C, have a cold one and watch Davin put together a Subaru motor!
Clarence has clearance, but whats Victors vector??
Rodger, Rodger.
One of the better episode of the series. I wish there were more b roll shots of the internal measuring bits.
Love this rebuild
I'd just advise using the Subaru service manual instead of Hayne's or Chilton's. They get quite a bit wrong even on basic torque specs. My WRX service manual shows the main bearing oil clearance being the same on all 5, with slight differences in bearing thickness on a couple bearings. Either way, having fun watching this series, hope it works well in the end!
When are you going to do a Mazda Rotary engine Davin? Love to see you tackle one of those some day.
Airplane! reference APPROVED!
I do love a good Airplane ! Reference as well :)
There are a lot of videos that emphasis measuring but never give options on what to do if the parts are out of measurement.
I do hope that maybe this little engine finds its way into a project car one day
Love to shoehorn it 8nto my old outback single cammer!
Cheers, great video, really enjoyed it
Well, Rock Auto did good on my wheel hub & bearing assembly. My car drives so quiet now that I'm questioning if the wheel bearing was bad from day one of me owning the car.
There's always cleaning stuff work to do! Even if the stuff is clean already, clean it again. 😞😓😩
Davin Show us a video of you running that new supercharged SB400 OF yours down the track. Remember the old commercial where the guy slaps his head and says! I could've had a V8. LOL
Nice job 👌👍👍👍
Roger, Roger. What’s our vector, Victor?
So much appreciation for the amount of work it takes. Curious and maybe that's next project to take apart an EV engine to try to enhance it, how many fewer moving parts it will have. Appreciate the amount of knowledge you have on these builds
You are a lucky man. You get paid to do what you love...................Jay
Wait a minute... .002 is too much? That is ridiculous for an engine that will be used a few times before it gets put away and never driven again. It will be in a museum soon. A static display.
You got this.
What about the big rubber band that you have to wind up to go? 😆 🤣 😂
Found the boomer. This isn't even new technology, old man.
@@jarrodnichols8111 😆 🤣 😂 and thank you for calling me an old man! A lot of younger men in the world may not even reach their 70th birthday like I will soon!
😆 🤣 😂
In your next video on the main bearings could you show if there is any scratches on bearings for putting the dail bore gauge on them
Just wanted to drop a like for the title.
not worth weighing and weight balancing piston and rods assembly?
MORE CHITY BANG BANG 🎶 MUSIC DAVID CANT YOU GET IT RIGHT AND MAKE IT MELLOW 🤐
Just run it, it's gonna eat a head gasket b4 anything else, and not like it's gonna b a driven hard. Personally fine as is!
Over, under!
I guess we'll see the crank go in later?
There is no crank, there is only Zuul.
😎👍
I am vindicated when the expert master mechanic talks out loud.
Gotta love airplane quotes
Just LS Swap It Already...
The goal is not to wrap it around a tree
I'm curious why you don't seem to ever weigh the pistons/rods and then balance them? Not necessary??
Man, I've seen this so many times. Not going to waste my time.
Please advise brand of ring filer.
I cut it 3x and it's still too short. 😂😂😂
What's your Vector, Victor?
Man, I need to watch Airplane! again. Such a classic.
I'm not joking and don't call me Shirley
we all know what happens wen oem like bmw v8 and a few other i think ford did that on 1st gen coyote had to tight of oil clearances blew engines and the required installation of new bearing to fix their goofy tight clearances
Was the entire block painted/coated, or is it new or something? Not used to seeing on look like that.
Aluminum oxidized/absorbed the color from the wash tank.
@@fattkaw Interesting.
Who's in the thumbnail? Haha
If using more higher torque bolt wont damage the thread in the block? Example stock 38ft-lbs to 60 ft-lbs....?
As long as you have enough thread engagement you’re good
@@aygwm Which means in stock you have around 10cm of thread in the block just make sure the modified bolt has the same length then should be fine? Could it be the thread in the engine block cant hold extra torque and stripped off? Or modified on the thread is necessary in order to put adding higher torque?
@@shyan5886 There are ratings for minimum thread insertion to reach yield torque for each grade of fasteners. So long as that minimum thread is engaged the bolt will break before the threads pull out of the block.
@@aygwm Ok got it. So this applied to every materials such as aluminium head as well? For instance, I have stock thread which rated in 70nm and around 2inch of thread. Why the after market bolt ask me to torque in 30nm maximum while having same length of thread and the size of the thread and bolt are match but longer to hold the sliders. Sorry for beginner question and thanks for taking time to reply my question.
@@shyan5886 if the aftermarket bolt was made for your application I can’t imagine you’d have a problem.
Cool build, but way too much B-roll
What’s your vector, Victor ?
What’s your vector, Victor?