VW Golf Mk2 GTi 16v - Bosch K-jetronic 180+bhp
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- Опубликовано: 2 сен 2022
- #youtube #mk2 #volkswagen
So recently I had the Mk2 back on a rolling road as a few adjustments have been made since its first power run such as....
- NGK single tip Spark Plugs
- Stock ECU Crystal fitted
- Adjusted Cam Timing
- Adjusted Ignition Timing
- Modified the Stock Air Box
- Replaced the Piper Panel Filter with a Jetex One
*full engine spec*
- Overbored to 83 mm
- JE forged pistons
- 10.54: 1 compression ratio
- Stock crank
- Balanced stock rods (with arp bolts)
- Cometc headgasket to ensure correct piston squish
- RCE ported cylinder head
- Stock ABF cams
- Port matched inlet manifold
- Ported throttle body
- ABF LHD Tubular Exhaust Manifold
- Custom downpipe
- 2.25" trackslag exhaust system
- Modified air box with jetex filter
- Modified crank case breather
- Cams adjusted
- Ignition timing advance adjusted
- WUR modification
- K-jetronic system adjusted
- Modified Porsche Air metering unit
- Side gapped spark plugs
- CO % adjusted
Safe to say the results speak for themselves, over 180bhp, 188.6 to be precise for a 1.9ltr with ABF cams and stock fuelling is fantastic.
That's also 202bhp per ton!!!
How does it drive, perfectly, normal OEM idle and driving then a beautiful power curve right up to the 7200rpm limiter, above 5000rpm it really comes alive and sounds epic.
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God I love the sound of a healty 16V!
Its an addictive soundtrack 😈
16valvers need to be driven, that is a fact!!! 🔥🔥
180hp on my abf 🔥
You got a new subscriber ✌🏻
They a definitely a drivers car 👍
Very nice! Love the sound of the 16v! I just had my scirocco mapped at stealth! Awesome job they did!
How much did they charge if you don’t mind me asking
65 plus vat
Sounds amazing mate 👍🏻
Ah mate I’ve binged so many of your videos this evening after finding your insta page, initially was looking at cold start issues with my 16v but now has given me the urge to get on with restoring mine (can see one video on my channel) absolute love what you’ve done with your car, it’s spot on 👍
Thanks 👍 glad they have helped and given you some inspiration, I'll check the video out later 👍
Nice one mate, mine deffo needs some TLC and I’m sure you’ll videos will come in handy as the K-jet system was all a bit unknown to me before 😅
niceee!
Few more to squeeze out i think
@@GreyGooseRestorations I wish there was a way to easily achieve this over here in North America. I would pay good money for an engine rebuild and just run the sucker on megasquirt.
If the k-jet is working the engine is great. Most of them are craps.i used to have a mk2 kr with a Holtz box but never worked correctly.. I made it 20vt now and iam steel working it.
Love it. Could the same principals (apart from cam) be done to improve ABF engine power?
Thanks, with an ABF it will need the ecu tweaked to get the best out of it, theres a guy on clubgti called Toyotec he's probably the best person to have it done by too 👍
Amazing result 👏 planning a build on mine this winter, maybe... have a complete 9a sitting, haven't watched your full back catalogue, is yours on standard block?
Thanks, its a KR block overbored to 83mm
Awesome. Sounds mint! Looking to get some power out of my KR. I need a gearbox rebuild so I'm strongly considering putting in a lightened flywheel, can you recommend a good one? Could I also ask, is it worth modifying the airbox and how do you recommend doing this, cut wingside/drilled?!
Thanks
Mine still runs stock flywheel, didn't want to lose the OEM feel to how the engine revs
Definitely recommend doing the air box mod, i have cut out most of the left hand side of the air box (between the wing and air box) and removed the plastic cover thats on the wing too and using a jetex panel filter
Perfect. Thanks very much!
Jeee this is awesome!!
Watched all of your kjet videos, makes me hope that there is still some potential in mine!
What would you say would be the path to go for a mildly tuned 8v engine? I got a mk1 gti with dx 8v engine, which is most likely going for a rebuild this winter as we managed to toss it up a bit whilst sandblasting and painting (don't do that lol)
So far I bought some 276 Schrick cam, full porsche 924 injection system and intake, 16v throttle valve, kn filter, 4-2-1 mani and Jetex (simons) 50mm exhaust.
Was planning an overbore for the block and some port polish work for the head... Are bigger valves needed? Anything particular you would recommend doing to the engine to spice it up whilst keepin +- oem??
Thanks and keep up the amazing work
Thanks
An overbore to 1.9 would really give it some more but mostly the porting on the head is where the power will be made.
If you overbore don't use off the shelf pistons as they end up with incorrect comp ratio (to high) which then stops you being able to run anything close to stock ignition timing
@@GreyGooseRestorations awesome! Are bigger valves needed too? This wont be a race car just want it to pull nice to hold up with the badge it's carrying (will be hard since daily is a golf R, but...)
Not necessarily needed but only go bigger on the inlets if you do
This work is so inspirational and just goes to show that one can make 135 kW on kjet just by working on and maximising the performance of all the separate engine components. My burning question is why have you not decided to go with the ABF manifold and EFI? Do you think given all the kjet mods you have done that losing these mods to efi would mean you would likely not see a higher power output on abf manifold?
Also, how have you achieved 10 deg BTDC when valve ping or bearing wobble would surely creep in? Is it the combination of higher lift cams (ABF vs KR) and more fuel from the WUR modification that has actually necessitated an earlier spark to adequately ignite the larger quantity of fuel in the combustion chamber?i.e. the bang still happens just after TDC but is a bigger bang.
Thanks, i wanted to retain the originality of the car / show that K-jetronic is more than suitable / capable to produce this level of power
By adjusting the ignition timing, every engine is different as to what it can take before pre detonation happens.
I am not sure I could achieve > 8 deg ignition timing here in South Africa during our summer time, as this is when I have noticed valve ping. However, my engine health needs some attention. Have also put in ABF cams which are still far shy of 268 duration cams that some of my pals have recommended for this engine.
Would you mind sharing the NGK spark plug model number and are you going to do a vid on your modification of the air inbox intake?
Finally, you mentioned cam timing, so assuming you are just referring to the ABF cams? Did I hear correctly that you have installed an ABF outlet manifold to a trackslag exhaust system?
i really miss my MK2 16v 🥲
Do a buy 😁
@@GreyGooseRestorations i would ..such a great classic and the value is increasing
Hi mate, great video of your car being rolling road tuned. Not sure if I mentioned it last time I messaged you, my car was fitted with the K-Star brain and 5th injector and tuned by AmD near Oxford back in the 90's, never forget the long drive home, the car was epic! Any idea whether any tuners are still able to tune K- Star equipped KR's? Keep up the good work, your latest video has reignited my desire to crack on with my resto.....only had the car 32 years...you'd think I'd be fed up of it....not a chance! Lol
Can never get bored 😉 k-star is pretty much dead as the only person to have the software told me the laptop is was on is dead, tho todays piggybacks are cheap and reliable. Does yours still work?
It did right up until I took the car off the road, it was pushing 166bhp on AmD's rolling road and I took it to a club rolling road meet a few months later and the guy commented it pulled like a train. Any recommendations on what I should replace the K- Star with? I'm keeping the KR standard unless something reveals itself on stripdown which changes things. I have the AmD maps somewhere which will be good as a benchmark to see if I can improve the engines performance. 👍
To be honest theres no need for it, it was only brought in as UK didn't have high octane fuel so it was actually to retard the ignition
Ah, that makes things a bit simpler, my valver used to 'pink' under certain loads and the K-Star/rolling road tune stopped that entirely. I'll try and reverse engineer the fitment but I'm now thinking I may have to obtain another ecu as the original is connected/software modified to the K-Star. Sorry to pick your brains on this....🙈
Its just a piggy back, so if its just the early timing ones under the scuttle panel left hand side where the ecu it, the ignition control module is mounted ontop of the ecu cage, it will be plugged into that.
Unplug the connection on the ICM, and unplug the k-star from main factory loom.
Then plug the factory plug back onto the ICM
Itll make sense when you look at it, I'd then check and adjust your ignition timing, should be 6deg BTDC
Can you list all stuff you did to improve HP on it? From Ebay?
Currently have a KR im working on
Its in the description 👍
@@GreyGooseRestorations ECU Crystal? What is that?
And adjust, have you installed adjustable cam gear then?
How did you modify the air box?
I explained ref the crystal in another video, it basically delays the ignition table in the ecu to give a higher RPM
Yes adjustable cam pulley is fitted
Removed a section on the bottom part of the air box to allow more air flow, only on the side that faces the inner wing tho
Description only lists more recent work i think. Possible to list all performances upgrades. For example doesn't list overboring. Cheers
Ill update the description later
Hey anyone know where I can find a new Idle Control valve for a 16v KR?
You can buy new ones that work, if you have the 2 pin plug type then there is an adjustable screw behind the yellow spot 😉
@@GreyGooseRestorations great, thanks man! I will have a look. Do you know where I can buy a new one if I need to. I can’t find them anywhere
@@GreyGooseRestorations I don’t see an adjustment screw. I found a used one but I still have intermittent idle problems. Seems to happen especially once it’s wqrmed up and I stop at a light. It stalls out. But it’s completely random.
That could be your Deceleration Cut off Valve (black grey valve at back of air box, un plug the electrical plug and see if it is better
Classic vw or heritage tho both will be aftermarket but theres not much to them to be fair
why is everyone throwing away this injector? and switch to electronic injection?? what is the cause of kj ejection??
Because it old and a lot of places or people can't or don't know how to fix it
@@GreyGooseRestorations If I understand his device correctly, there is no electronics. the most important thing is the right fuel pressure of 6 bar, and clean the dispenser and plungers with filter grids???
@@GreyGooseRestorations I think there is nothing more reliable than a factory... if you switch to electronic injection, there is no guarantee how long it will work correctly. very often people come back because it is difficult to calibrate normally... but at the price of what to change and adjust the electronic injection, what to adjust KJ at the price is almost the same. yes , and I think for connoisseurs the factory condition will be more appreciated .
Once k-jetronic is set and working correctly its a highly reliable system consisting some out there are still working after 20+ years
@@GreyGooseRestorations I agree.. I began to study this system.. unfortunately, the problem is to find spare parts... although it seems like everything can be cleaned with a carburetor cleaner channels and grids???
well done but your voice is not loud enough.
Just watched it and noticed also, will adjust it accordingly on the next one 👍