View Poll Results: What will make more power?
Twin GT35's
10
66.67%
Single On3 88mm
5
33.33%
Voters: 15. You may not vote on this poll
GT35x2 vs On388x1-Best China turbo(s) for 1001whp?
01-23-2016, 09:05 PM
#1
TECH Fanatic
Thread Starter
GT35x2 vs On388x1-Best China turbo(s) for 1001whp? Since everyone wants 1000whp, I'll set the tone for this topic at 1001whp 
Twin GT35 Copies with .82 turbine housings
or
Single on 3 88/83 (old school PT88 Copy)
Question is simple-which comb will
1) Spool faster
2) Make more with the gates pinned shut.
Lets assume this is on the ever-so-popular stock bore/stroke 5.3 with a Ls1 intake, small turbo cam and 7k rpm redline. Comments and general banter welcome! Evidence for opinions always appreciated
Twin GT35 Copies with .82 turbine housings
or
Single on 3 88/83 (old school PT88 Copy)
Question is simple-which comb will
1) Spool faster
2) Make more with the gates pinned shut.
Lets assume this is on the ever-so-popular stock bore/stroke 5.3 with a Ls1 intake, small turbo cam and 7k rpm redline. Comments and general banter welcome! Evidence for opinions always appreciated
01-24-2016, 03:03 PM
#4
edit, it appears there’s many options in the t3, only one option in the t4. I would suggest the t4 for anything LS.
01-24-2016, 03:17 PM
#5
Those Chinese 66mm T3/T4's would probably work well if you go a tad beyond stock heads... Should spool like crazy even in .81. Now whether or not the T3 will hold you back from making 1200BHP (~20% drivetrain loss) is the real concern.
01-24-2016, 03:37 PM
#6
TECH Fanatic
Thread Starter
http://www.ebay.com/itm/For-Civic-Prelude-Accord-Prelude-Fit-S2000-Integra-RSX-GT35-GT3582-BLACK-Turbo/171816885546?_trksid=p2045573.c100033.m2042&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20131017132637%26meid%3D6f6b0d612f1443c88923a95165cea73a%26pid%3D100033%26rk%3D2%26rkt%3D4%26sd%3D231625062371
Do you by chance know what the PT88 compressor was rated at? I can only find a rating for the new MVS wheel. The 61mm 35r is rated at "65lbs/min" but they have made as much as 700whp and trapped mid 150's on little 4 bangers so i'd say it was undertated.
01-24-2016, 05:12 PM
#7
I just went through this (and i think you may have even commented)
I originally opted for the real gt35 sized knock off (61/62, t4 with a .63 housing) but i only found 2 other people using them with results
1st guy- stock 5.3, ls6 cam (iirc) and e85, made 730 at 18psi through an auto
2nd guys- dehnam, with his 6.0, only made 500whp/800tq.
So sent them back and got a pair of 66/64 knock offs with a t4 .81 housing. This is on a 228/228 cam 6.0 on pump and meth with cut heads (10-1CR) Car made 390/390 on the motor, still a couple weeks from dynoing on the boosts
I originally opted for the real gt35 sized knock off (61/62, t4 with a .63 housing) but i only found 2 other people using them with results
1st guy- stock 5.3, ls6 cam (iirc) and e85, made 730 at 18psi through an auto
2nd guys- dehnam, with his 6.0, only made 500whp/800tq.
So sent them back and got a pair of 66/64 knock offs with a t4 .81 housing. This is on a 228/228 cam 6.0 on pump and meth with cut heads (10-1CR) Car made 390/390 on the motor, still a couple weeks from dynoing on the boosts
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01-24-2016, 06:05 PM
#8
What do you mean by "like" drive pressure? As in they are not as effected by a poor ratio?
Do you by chance know what the PT88 compressor was rated at? I can only find a rating for the new MVS wheel. The 61mm 35r is rated at "65lbs/min" but they have made as much as 700whp and trapped mid 150's on little 4 bangers so i'd say it was undertated.
No idea what wheel they copied on the new 88/83 turbos. And we have no idea what the china gt35's flow either. So no way to know for sure without experience. I'd look into the 76/65's for twins. They have been proven to make 4 digit power at the wheels many times.
01-24-2016, 06:27 PM
#9
I would agree a straight T4 would provide the proper dividends vs a T3/T4 at that power level. Same P-trim wheel is used in either often times so it's really a matter of better flowing housing.
I would go larger than the 61mm's even if my goal was less than that. My .02 anyway.
I would go larger than the 61mm's even if my goal was less than that. My .02 anyway.
01-24-2016, 06:43 PM
#10
Im the "other guy" using the t4 gt35s
They made 730 at 17psi in my irs gto, unlocked converter.
I ran them up to 25-26 psi a few times but im sure they were out of breath there.
I reeaaaallly doubt theyd make 1000hp on anything without a burn it down tune up on an optimistic dyno.
They spooled lighting fast and carried great to 7k, but i dont think they can move enough air to make a grand
They made 730 at 17psi in my irs gto, unlocked converter.
I ran them up to 25-26 psi a few times but im sure they were out of breath there.
I reeaaaallly doubt theyd make 1000hp on anything without a burn it down tune up on an optimistic dyno.
They spooled lighting fast and carried great to 7k, but i dont think they can move enough air to make a grand
01-24-2016, 07:39 PM
#11
Im the "other guy" using the t4 gt35s
They made 730 at 17psi in my irs gto, unlocked converter.
I ran them up to 25-26 psi a few times but im sure they were out of breath there.
I reeaaaallly doubt theyd make 1000hp on anything without a burn it down tune up on an optimistic dyno.
They spooled lighting fast and carried great to 7k, but i dont think they can move enough air to make a grand
They made 730 at 17psi in my irs gto, unlocked converter.
I ran them up to 25-26 psi a few times but im sure they were out of breath there.
I reeaaaallly doubt theyd make 1000hp on anything without a burn it down tune up on an optimistic dyno.
They spooled lighting fast and carried great to 7k, but i dont think they can move enough air to make a grand
But it was based off your experience that i decided to go bigger. I figured with a cammed 6.0, they would choke alot sooner.
01-24-2016, 08:02 PM
#12
TECH Fanatic
Thread Starter
Im the "other guy" using the t4 gt35s
They made 730 at 17psi in my irs gto, unlocked converter.
I ran them up to 25-26 psi a few times but im sure they were out of breath there.
I reeaaaallly doubt theyd make 1000hp on anything without a burn it down tune up on an optimistic dyno.
They spooled lighting fast and carried great to 7k, but i dont think they can move enough air to make a grand
They made 730 at 17psi in my irs gto, unlocked converter.
I ran them up to 25-26 psi a few times but im sure they were out of breath there.
I reeaaaallly doubt theyd make 1000hp on anything without a burn it down tune up on an optimistic dyno.
They spooled lighting fast and carried great to 7k, but i dont think they can move enough air to make a grand
Great discussion though!
01-24-2016, 09:19 PM
#14
Im the "other guy" using the t4 gt35s
They made 730 at 17psi in my irs gto, unlocked converter.
I ran them up to 25-26 psi a few times but im sure they were out of breath there.
I reeaaaallly doubt theyd make 1000hp on anything without a burn it down tune up on an optimistic dyno.
They spooled lighting fast and carried great to 7k, but i dont think they can move enough air to make a grand
They made 730 at 17psi in my irs gto, unlocked converter.
I ran them up to 25-26 psi a few times but im sure they were out of breath there.
I reeaaaallly doubt theyd make 1000hp on anything without a burn it down tune up on an optimistic dyno.
They spooled lighting fast and carried great to 7k, but i dont think they can move enough air to make a grand
01-24-2016, 11:15 PM
#15
Ls6 cam
Car weighed 3860 without me in it, probably close to 4100 race weight
It went 127 at 8psi
135-136 at 17-18 psi
Went 140 at 24#
Had some trans/converter issues the last time i went to the track
Think it would have gone a little faster on kill
Car weighed 3860 without me in it, probably close to 4100 race weight
It went 127 at 8psi
135-136 at 17-18 psi
Went 140 at 24#
Had some trans/converter issues the last time i went to the track
Think it would have gone a little faster on kill
01-25-2016, 10:18 AM
#16
TECH Fanatic
i have the 6162 gt35 t4s on a 4.8. i am a 4l80e swap away from throwing everything they can make at it, and it sounds like ill need bigger ones to meet my eventual goals.
01-25-2016, 10:48 AM
#18
TECH Fanatic
Thread Starter
You will be able to make more on the 4.8 than people on 5.3s and especially 6.0. Are they China turbos? I cant find cheap China T4 35's.
01-25-2016, 11:08 AM
#20
TECH Fanatic
these are the ones i have:
http://www.ebay.com/itm/CXRacing-T4-...RS2egM&vxp=mtr
my combo is mild ported 5.3 heads, tu0 cam, and a 4.8 rotating assembly in a l33 block. I have a ~3600 converter and 4l80e going in soon and am converting the truck to AWD at the same time.
I had it in a s10 with a single ebay gt45 and beat on it pretty hard. i wrecked that so i moved the motor to a full size and did the twin kit.
when i was looking for turbos i wanted something that spooled fast and couldnt really find anything else that seemed right. the next step up i considered was on3 t70s which i felt were too big, i am glad theres something in the middle that i could use if i need a small upgrade
I figured for $500 for the pair i couldnt lose, and worst case was i had a running t4 twin truck i could fit any other t4 to in the future
http://www.ebay.com/itm/CXRacing-T4-...RS2egM&vxp=mtr
my combo is mild ported 5.3 heads, tu0 cam, and a 4.8 rotating assembly in a l33 block. I have a ~3600 converter and 4l80e going in soon and am converting the truck to AWD at the same time.
I had it in a s10 with a single ebay gt45 and beat on it pretty hard. i wrecked that so i moved the motor to a full size and did the twin kit.
when i was looking for turbos i wanted something that spooled fast and couldnt really find anything else that seemed right. the next step up i considered was on3 t70s which i felt were too big, i am glad theres something in the middle that i could use if i need a small upgrade
I figured for $500 for the pair i couldnt lose, and worst case was i had a running t4 twin truck i could fit any other t4 to in the future