T2 2.2 to 2.5 conversion how much HP gain?

[DakotaKid]

Quote:

Originally posted by glhsken AWW.. will you look at that Bryan... Another cheater

That is the funniest thing I have ever read!

:big grin: :big grin: :big grin: :big grin:

[DakotaKid]

Quote:

Originally posted by spoolboy Wonder what would happen if I threw both a stock turbo and my spare stock G head on? Things that make you go Hmmmmmmmm..... Low vehicle weight, a good tune and a decent chassis are pretty amazing.

I am happy with my Stock G head so far.
Give it a try!

-Bryan

[86Shelby]

I've been keeping tabs on this thread since I have been doing this same conversion. I just got done with the swap and I love it! Right now it doesn't matter that the power may be less at high RPM than a similar 2.2; there is power everywhere in the powerband compared to the old tired 2.2. Getting onto the interstate is no longer a laborous chore but a couple second effortless jaunt. Judging by my asselerometer, 4-5 psi is equal to 8-10 psi on my old engine(200K miles). I'm only running 4-5 psi until everything is broken in and bugs worked out. The engine is a basic stock rebuild '89 2.5L, standard sized bearings and pistons, stock 782 head, '89 TBI roller cam, 2 piece intake, +20 injectors, ported exhaust manifold(really just a cleanup aside from the 2 lumps that were taken down), an A-555 transaxle, and all packaged in an '86 GLHS. I'll report back with some dyno runs that I hope to have done in the next month or so. Maybe play with some cam degreeing and boost levels at the dyno. I hope to see 200 WHP with 16-18 PSI. If I don't oh well, that means I'll need a larger exhaust!:big grin:

[86Shelby]

I've been keeping tabs on this thread since I have been doing this same conversion. I just got done with the swap and I love it! Right now it doesn't matter that the power may be less at high RPM than a similar 2.2; there is power everywhere in the powerband compared to the old tired 2.2. Getting onto the interstate is no longer a laborous chore but a couple second effortless jaunt. Judging by my asselerometer, 4-5 psi is equal to 8-10 psi on my old engine(200K miles). I'm only running 4-5 psi until everything is broken in and bugs worked out. The engine is a basic stock rebuild '89 2.5L, standard sized bearings and pistons, stock 782 head, '89 TBI roller cam, 2 piece intake, +20 injectors, ported exhaust manifold(really just a cleanup aside from the 2 lumps that were taken down), an A-555 transaxle, and all packaged in an '86 GLHS. I'll report back with some dyno runs that I hope to have done in the next month or so. Maybe play with some cam degreeing and boost levels at the dyno. I hope to see 200 WHP with 16-18 PSI. If I don't oh well, that means I'll need a larger exhaust!:big grin:

[turbovanman]

Nice times Spoolboy, is that real 1/4 mile or 1/8th mile converted. Thats impressive considering I can't even get close to that, is your car gutted? and how much boost?
As for shifing, my van won't shift till it hits the limiter as I have to fix my trans but when I backed out and got it to shift at 5500, it went faster and I broke into the 14's. As for power, after 5000 ish it just signs off, no point keeping it there but will address that this winter!!"thumbs up

[glhsken]

Stock to stock, you should expect to see that... especialy given the comparison of a "tired" 200K motor to a fresh one. Freeway merges shouldn't be "laborious" even with a stock TII in a GLHS...

When the modding begins and the "artificial" limits for boost are removed... the watters get murky...

[Ben Paquin]

I would go with Ken abou the fresh engine accounting for part of it. The 2.5 alone at 4-5 psi won't take a 2.2 at 8-10 psi. But it probably accounts for 1-2 psi seat of the pants power.

[spoolboy]

Quote:

Originally posted by turbovanman Nice times Spoolboy, is that real 1/4 mile or 1/8th mile converted. Thats impressive considering I can't even get close to that, is your car gutted? and how much boost?

Click on the time in my sig to see the 1/4 mile timeslip. Thanks. Yes, it's gutted a little bit. 24psi.

Latest pics on my friend's website: http://www.gtneon.com/monstermopar2003.html

[turbovanman]

Thanks, nice work on the car "thumbs up

[spoolboy]

Quote:

Originally posted by turbovanman Thanks, nice work on the car "thumbs up

Thanks! And good luck.

[spoolboy]

Quote:

Originally posted by glhsken AWWW now Dennis... be gracious.. No one is preaching high revs here, neither motor is capable... As for the staying together bit.. Damm... I'm an accountant... I freely admit, EVERY motor I've laid waste to was my own WRENCHING fault!! Half the fun of this sport is doing it yourself...

The only engine that I've run that has stayed together a long time is the one I spent the least time and money on, lol. We're going to run that engine in Dad's car until it won't run anymore. There's just something special about that one.

I've made my share of stupid mistakes...... and payed for them.