T3/T4 Too big? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

95Blue240sx · 02-14-2004, 09:48 AM

sup guys. i recently purchased a t3/t4 for my KAT project. the compressor side is a .60ar and the turbine(exhaust) side is a .63ar.

im not sure if this turbo is too big for me. i like to drive the twisties. but i dont want to take a turn then hit full boost then end up in the mountain. im thinking of selling, but what do you guys think? should i go down to a t25/t28?

boosteds14 · 02-14-2004, 10:02 AM

I think it is a good setup. What turbine wheel?

It shouldnt be too laggy but not spool as quick as a t28.

Maeda · 02-14-2004, 01:06 PM

TOO BIG? Are you joking? Go for it!

a2low240 · 02-15-2004, 11:01 AM

Perfect sizing, if you desire a quicker spoolup then switch the exhaust housing to a .48 a/r

GlacierFreeze · 02-15-2004, 08:26 PM

Too big? rofl; If I wanted awesome hp then I'd run a t66, nice power band.

Evil S14 · 02-16-2004, 11:22 AM

My turbo is a t3/t04e 60 trim .63 ar exhaust, stage 3 wheel, and it is a bit laggy and tq reaaaly kicks in hard, it gets about 100 ft lbs in the 3800-4800 rpm range, im not sure if this turbo is that great for road racing, but you'll eventually get used to it and learn to adapt to it. If you want your power to be really smooth and linear then get a smaller turbo

mellojoe · 02-16-2004, 11:58 AM

If its for a KA-T project, then it shouldn't be too big. The large displacement of the KA matches well with a large turbo. If you were to try that on a small 2.0 or even a 2.2L, you'd probably complain that it was too laggy. But, I don't think you'll have too much of a problem. Should have boost before 4,000 rpm.... I'm guessing here...

Honestly, and this is not great news, but honestly, the best way to find out is to try it. Install the turbo, take it out for a run or two (or several) and see if you like where and when and how strong the boost comes on. Or, maybe if someone in your area has a KA-T project, maybe you could ask them for a ride (or drive) and see how that turbo matches up to yours and maybe make some assumptions from there on out.

95Blue240sx · 02-16-2004, 12:08 PM

thanks for the replies. unfortunatly i dont know ANY ka-t's in my area. mostly all are SR guys. but its true, i'd just have to try it. maybe a smaller housing would suit my needs. thanks.

oh yeah i cant try it just yet. all i have so far is the manifold, turbo, fittings, and oil lines. i still got a ways to go. im looking to be done about summer to late summer time.

02-14-2004, 09:48 AM	#1
95Blue240sx Post Whore! Join Date: Jul 2002 Location: Girls pee-pee when they see me Age: 41 Posts: 4,084 Trader Rating: (0) Rides Gallery: 95Blue240sx Feedback Score: 0 reviews	T3/T4 Too big? sup guys. i recently purchased a t3/t4 for my KAT project. the compressor side is a .60ar and the turbine(exhaust) side is a .63ar. im not sure if this turbo is too big for me. i like to drive the twisties. but i dont want to take a turn then hit full boost then end up in the mountain. im thinking of selling, but what do you guys think? should i go down to a t25/t28? __________________ Please leave me feedback

02-14-2004, 10:02 AM	#2
boosteds14 Zilvia.net Advertiser Join Date: Jan 2002 Location: CIPmotorsports Age: 43 Posts: 1,612 Trader Rating: (0) Feedback Score: 0 reviews	I think it is a good setup. What turbine wheel? It shouldnt be too laggy but not spool as quick as a t28. __________________ 240SXONE www.240SXMOTORING.com --- One Stop Shop for Your Nissan 240sx

02-14-2004, 01:06 PM	#3
Maeda Nissanaholic! Join Date: Dec 2002 Location: Camp Snake Bite, CA RIP Posts: 2,356 Trader Rating: (0) Rides Gallery: Maeda Feedback Score: 0 reviews	TOO BIG? Are you joking? Go for it! __________________

02-15-2004, 11:01 AM	#4
a2low240 Leaky Injector Join Date: Aug 2003 Location: Downingtown Pa Age: 45 Posts: 113 Trader Rating: (0) Feedback Score: 0 reviews	Perfect sizing, if you desire a quicker spoolup then switch the exhaust housing to a .48 a/r __________________ Signature Exceeds Forum Limits

02-16-2004, 11:22 AM	#6
Evil S14 Zilvia Addict Join Date: Dec 2001 Location: Indianapolis/Bloomington Age: 41 Posts: 610 Trader Rating: (0) Feedback Score: 0 reviews	My turbo is a t3/t04e 60 trim .63 ar exhaust, stage 3 wheel, and it is a bit laggy and tq reaaaly kicks in hard, it gets about 100 ft lbs in the 3800-4800 rpm range, im not sure if this turbo is that great for road racing, but you'll eventually get used to it and learn to adapt to it. If you want your power to be really smooth and linear then get a smaller turbo __________________ image exceeds forum limit -Moderation

02-15-2004, 08:26 PM	#5
GlacierFreeze Zilvia Member Join Date: Feb 2003 Location: Hattiesburg, MS Age: 42 Posts: 209 Trader Rating: (0) Feedback Score: 0 reviews	Too big? rofl; If I wanted awesome hp then I'd run a t66, nice power band.

02-16-2004, 11:58 AM	#7
mellojoe Zilvia Junkie Join Date: Jan 2004 Location: ARKANSAS Posts: 518 Trader Rating: (0) Feedback Score: 0 reviews	If its for a KA-T project, then it shouldn't be too big. The large displacement of the KA matches well with a large turbo. If you were to try that on a small 2.0 or even a 2.2L, you'd probably complain that it was too laggy. But, I don't think you'll have too much of a problem. Should have boost before 4,000 rpm.... I'm guessing here... Honestly, and this is not great news, but honestly, the best way to find out is to try it. Install the turbo, take it out for a run or two (or several) and see if you like where and when and how strong the boost comes on. Or, maybe if someone in your area has a KA-T project, maybe you could ask them for a ride (or drive) and see how that turbo matches up to yours and maybe make some assumptions from there on out. __________________

02-16-2004, 12:08 PM	#8
95Blue240sx Post Whore! Join Date: Jul 2002 Location: Girls pee-pee when they see me Age: 41 Posts: 4,084 Trader Rating: (0) Rides Gallery: 95Blue240sx Feedback Score: 0 reviews	thanks for the replies. unfortunatly i dont know ANY ka-t's in my area. mostly all are SR guys. but its true, i'd just have to try it. maybe a smaller housing would suit my needs. thanks. oh yeah i cant try it just yet. all i have so far is the manifold, turbo, fittings, and oil lines. i still got a ways to go. im looking to be done about summer to late summer time. __________________ Please leave me feedback