250 WHP using a stock Garrett

[gti_7]

k car, 2.5L stock head, 92 tbi cam (had it laying around), stock manifolds, +40's, 3 bar, my own calibration (28-30 part highway flying, part backroad, part city/hammering, 35-39 highway), stock turbo with a .63 exhaust housing and 3" turboback exhaust. 18psi, 13.1 @ 104.

Brian

nice and simple but effective setup, How did you like the stock turbo with a .63 exhaust housing? I am thinking of doing this to a stocker i have lying around. Would a .63 housing compliment an Taft S2 cam?

bernie

[Aries_Turbo]

it moves the powerband up. spools a little slower. lower gears, 20psi ~2800-3k. higher gears, ~2500 full spool.

it seems to free up some power though. i can run a 13.9 with 13psi boost.

i need to retard the cam a little and/or try a 88 TBI cam. my last 1/8th mile only gains like 21mph on a good day. usually its only 19. i could use taller slicks or trans. the 2.5L doesnt like to rv through the traps.

Brian

[Vigo]

offset keys are cheap.

.63 housing not that cheap

[turbovanman²]

. the 2.5L doesnt like to rv through the traps.

Brian

Get a 2 piece intake,

offset keys are cheap.

.63 housing not that cheap

Adjustable cam gear a much better buy than keys,

[Vigo]

true unless you already know what you want and are spending your money on something else

brian's car has been together in mostly the same setup for years so i dont know if he plans on getting back into all the time and tuning finding the 'best' setting v.s. just throwing in a key and patching up the tune a tiny bit. to each his own, but yeh the gear is fairly cheap too.

[Aries_Turbo]

i have the offset keys. they have been in my dresser drawer for years lol.

plus i have a 16v head and a borg warner s200 sitting on my porch. who know what will happen first with me.

Brian

[moparzrule]

Get a 2 piece intake,

Heh, more like ''get a 16v head'' right simon? I could not get my 8 valve 2.5L to have power past 6000 RPM. 2.2L with the same top end that was on the 2.5.....7200 without breaking a sweet, could go more cuz it's still pulling some but thats where I set the rev limit cuz I have stock lifters

[Vigo]

but then nobody ever retards the cam timing on a 2.5 either. heh.

[turbovanman²]

Heh, more like ''get a 16v head'' right simon? I could not get my 8 valve 2.5L to have power past 6000 RPM. 2.2L with the same top end that was on the 2.5.....7200 without breaking a sweet, could go more cuz it's still pulling some but thats where I set the rev limit cuz I have stock lifters

Mine would make power to 6500, Shelgame was a bit puzzled about that, lol!

[moparzrule]

but then nobody ever retards the cam timing on a 2.5 either. heh.

Well I thought about it, but with a G headed 2.5L the EGT's were already outrageous, couldn't get them below 1600.

Besides, I had the block decked and the head surfaced so I should have been ~2 degree's retarded on the cam timing.