billybob77036

For those saying that the GT30R's are too small, and you need more then 52lbs of air, you do know that with twins you'll come close to doubling that 52lbs depending on the exhaust housing right?

BIGBOS

One for the vette huh?

NA$TY-TA

iTrader: (21)

Knock it off Brian........ Think School.....
Kyle

BIGBOS

Yea, thats such a tempting price.............

LINGENFELTER SS

Didnt take you long huh Brian ! Once a FI guy, always a FI guy.

BIGBOS

Haha, I'll eventually mod it

smokinHawk

iTrader: (48)

didnt the incons use a GT35 and an optional Gt37 turbo. i think those could only get you about 700rwhp

BLWNZ

iTrader: (2)

LPE i believe used GT30's on one of there cars and claimed it made 800whp at 14lbs and over 1000hp at 20lbs. i could be wrong but i think i saw that on a vet. site. so i would imagine 700hp would not be a problem.

Phate

iTrader: (2)

The larger of the turbos that were offered with the Incon kits are a GT30 hybrid that flow 50lbs of air each.

I think that the Lingenfelter car had HKS turbos with some different specs.

I plan on trying to max out the Incon kit on the new 403 motor. I should have some preliminary numbers in 3-4 weeks. My number will be through a TH400 though.

XJGPN

Those numbers are Incon names... not Garrett. The turbos that Incon used were actually based off a T25/T28 Flange. Custom Turbine housing with a thicker flange than a standard T28 Turbine. Custom Compressor Cover similar to a T04B compressor Cover. For example, Incon GTBB35 had the following specs (best info I could piece together... might not be totally accurate):

CHRA #446179-0032 GT2535 oil/water True dual ball bearing
Housing AR: 0.70
Wheel Trim: 56
Wheel Diam: 2.09/2.80
Turbine Housing AR: 0.64
Wheel Trim: 76
Wheel Diam: 1.85/2.1

sb427f-car

ok, I can't remember but...did you say that this kit was going to route the downpipes under the K member as well?? or were you trying to find away to route them back above the k member john?? also, what turbos are in the series? I know you have GT 30s, 35s, and 42s, is there a 40 series too?? are there different inducers on them??

JZ 97 SS 1500

iTrader: (2)

Yes their are GT40R's out there. They are only offered in a 56 trim right now.

Jose

red ws6 99

The GT35 and GT37 were not even Incon names, just what people remember. The compressor housings were just T04B machined out (I had John at Limit engineering make me one). Incon used the same setup on the 4.6 mustang and also from Dave original 5.0 kit (but his company was not called Incon). Way to small on the exhaust side, but makes for a heck spool. So Incon turbo had a compressor housing inbetween a GT32 and GT35.

Anybody got a compressor map for a gt3076R seems like they would not support 800 fwhp, based on Garrett number system. Even if they support it you would not want to run them anywhere near the max due to inefficiency.

Gary

JZ 97 SS 1500

iTrader: (2)

Gary we have the compressor map on our site. And 800 hp would be a dream with a GT30-76R

GT30-76R compressor map


Jose

Hugger Z

iTrader: (4)

I am looking forward to seeing some pictures of this kit. I have always wanted twin turbo's. But also need to keep the A/C as it is my fun daily driver in the warmer weather. Looking forward to seeing more. And hopefully ordering a kit later this year!

red ws6 99

Thanks, That is a pretty peaky turbo for a LS1. Unless your willing to run really high boost (at least high for me), two of those are not going to be well suited for the LS1.

Gary

JealouZ

I must be missing something help me understand, I'm trying to figure out why TWIN gt30-76r's wouldn't be about right for a 346 ls1? According to your air consumption chart the 346 ls1 uses 70lbs/min at 6000rpm wouldn't that put you where you want to be on the gt30-76r compressor map if you divided the 70lbs/min into 35lbs/min since you are using two turbos? On the compressor map it looks like your still above 78% efficiency.What is needed to put you in the 800 hp range by just looking at compressor maps help educate me please.


consumption off 346 ls1 air chart:

PSI-15
rpm\6000
PR-2.02
70 lbs/min

Project GatTagO

iTrader: (7)

Is there a compressor map for the GT40R?

Andrew

ryan23

iTrader: (5)

I'd certainly agree with this. I just posted a thread a couple weeks back about using a pair of these myself. I think there was some confusion in this thread as to whether one or two would be used. Certainly one wouldn't suffice but a pair would be ideal for a pump gas monster. If you were looking for a bit more flow, you could do a T3/T4 using the GT30 hotside with a GT40 compressor side. Packaging wouldn't be comprised too much either. Not to mention that with a 1.06 hot side, turbine flow looks sufficent as well.

Ryan

Revelation222

Question...If you run the DP's under the k-member, could they possibly be crushed? IF I hit the track with skicks and I pull the front wheels on the launch, when the car comes back down too hard, wouldnt it smash the pipes against the k-member? Or am I missing something?