Ya I havent really tuned the GTR yet. Its still on someone else's maps which i know are detonating because its pulling timing.

As soon as im able to tune it, i will get it where it needs to be with no knock on our 93oct here.

It might be because of the fuel in the tank is over 2 years old though. That is my guess. I have to run the high 91oct map just so it doesn't pull timing out and the tank has 100oct in it!

Evo is super fun to drive. At this point I will go as far to say its funner then the GTR because of how freakish it feels at this power level.

I want to run more boost though, and don't trust the 2.4 for it as mentioned previously in this thread, so i am gonna prepare the 4g63 block I bought awhile ago to go in.

Thanks.

No I have never had that issue before. I do not have the AC compressor in my car anymore, but its possible maybe its locking up on you. Do you smell burnt rubber when it happens?

If so id say theres a pulley locking up on you. I imagine you rev real high RPM right? Im sure the higher you go, the more chance of something like that occurring.

My guesses on it would be

1. one of the pulleys locking up or temporary seizing
2. auto tensioner maybe malfunctioning

 

Now I have blew out my spark. Hopefully new plugs fix it or I guess its time for a CDI box. I didnt think the non CDI would ever give me trouble based on how long I've had it and how well its been all these years. I never had misfire issues since the day I bought this product.

Having blowing out spark / misfiring motivated me to check the compression also since I was pulling the plugs anyways.

Compression was really good, better then I expected honestly from a very cold engine sitting in 45F.

Heres what it was:

cyl1

cyl2

cyl3

cyl4

 

Thanks for the advice. I will look into a new tensioner. I believe it has over 100k on it and is prob time for e new one. Id hate to have to loose my AC. If I do get rid of AC is their any awy I can keep it in the car and just run a smaller belt to bypass it at the track. It gets 114 here in AZ and I dd my car to work some days. Pulling my AC is nit even an option lol

 

114F Damn! I wouldn't remove the AC either!

If you want the part # to the OEM tensioner let me know. I can get you one also if you want a good price.

I have no idea on the bypass ac like that. I think the AC pulley just turns like a normal pulley when the compressor is turned off, so it shouldn't seize, but im not sure how to really test what I just said.

 

Spark issue was a failing alternator for anyone that was curious.

 

Thanks, I may be hitting you up for that tensioner. I'm going to try the gates AC delete belt and make a few passes. If that doesn't work. I'm going to swap out the tensioner. That's for the info.

 

Just an update on what im doing with that 4g63 block i posted earlier here.

Straight from the factory the bores distort quite a bit when you put the torque plate on with 625+ ARP headstuds. Enough to the point it needs straightened out.

So what we are doing is, straightening them out and using a .010 over piston.

I decided im turning that block into a 2.2L which will consist of the following:

R&R 153mm billet steel i-beam custom rods /w 625+ bolts
Manley turbo tuff billet crank 94mm
Wiseco HD 1400 pistons /w custom compression ratio of 10.5:1

and so forth. If I don't have any issues with the 2.4 ill leave it in, but if it gives me any HG issues once i attempt 900whp+ territory which they are known to do, I will swap it out for this 2.2 setup. If I don't swap it out, I will sell this 2.2 of course to one of my customers.

Aside from that I went with this ignition before really pushing the car past 810whp:

http://www.sparktechignitions.net/st...roducts_id=208

 

Final last bits of data of my 2.4L before I swap to a 2.3L. Mainly going to the 2.3 for more headgasket sealing surfaces, so i can bump the boost around 50psi. Im looking to do some crazy MPH this year. The car is going to remain over 3000lb also. The full leather interior will also remain intact.

For the final post I will share the 93oct graph, and the last few things we did on E85 as well which went over 800whp.

The hybrid boost did exactly what I wanted, but from prior misfires that compromised my headgasket my coolant became pressurized.

The leak wasnt severe, but at higher boost levels it became troublesome, so instead of putting on a new gasket, im just going to the stock OEM size bore 85mm which is a massive 2mm more surface sealing. This will allow me to run over 50psi if i choose to, which i think ill be forced to, to go the MPH i want in the weight my car sits at.

I'll also be installing a omni 7 bar this time, so for future if any of my stock ecu customers want to go nuts we will have full tuning ability on that sensor same driveability as the 4 bar, which you'll just have to take my word for it, but my evo drives as good as a stock evo does. Most people cant believe how well it drives for the power it makes when I take them for a ride.

============================================

Car put down this on straight 93oct & one pull with E85 also:




============================================

Here's how the engine bay looks after the Sequential ignition is installed. The graph above with pulls was on the non cdi not the sequential.




& heres two videos to share how the car pulls. Videos arent that great, but you get the idea. You can tell it pulls pretty decent I hope.



I'll document my build on the 2.3L and will update once I get more info.

It's just going to use the same basic stuff as the 2.4 did.

I don't want to say what mph im targeting yet, i'll just say i need around 1k whp to get it for now.

 

I haven't updated this in ages. Here's track results of the first time going back in over 3 1/2 years.

https://www.evolutionm.net/forums/ev...l#post11539656

(first slip missed 4th gear and wouldn't go back in (this was 42psi)
(2nd slip wastegate pressure because missing 4th scared me)
(3rd slip wastegate pressure again with lower tire pressure 31-32psi)
(4th slip 36-37psi) 780-800whp

Slips and video attached below for those who don't want to click into other sections of forum:



This video was blurred from camera lens being fogged.


Here's a slower pass but clear video. around 33psi.


All in all not bad, but I expected more. Will go again when weather gets nice again.

 

Tom, you are doing great. Consistent tens is very good. Piloting an all wheel drive manual shift vehicle into the nines is harder than most think. You will be their in the spring.

Don

 

Thanks Don for the kind words! Yes it sure is! & Hopefully

 

well said.

 

I just want to update this thread since it's been 10 years. I bought this very motor from Tom 5 years ago and put another 20k miles on it. It's seen a mix of daily driving, canyons and autocross. I've had it paired with a MIVEC head as an incredibly responsive BBK-3B setup, 530 whp at 30 psi (on dyno dynamics, should be 600 whp on a dynojet).


Looks like it's finally pushing oil past the rings in cyl #2 so it's going to get a refresh. I'm fine with that, I put it through a lot of abuse. I don't think I'm changing much, I'm probably even keeping the crank despite reported issues. My head isn't o-ringed and I don't know if I want to bother, it's been fine as-is.