Initial twin turbo dyno results

I recently finished building a twin turbo system for my car.

Turbos are Innovative GT61's, P-trim .69 a/r on center, mounted low on either side of the block. Tubular motor mounts gave me room for induction. I had to notch the stock K-frame for compressor housing clearance. Headers are tubular, non-equal length 1 5/8 primarys.

I had Griffin build me 2 intercoolers which mount vertically in front of each tire. The are a bit small for the task, but I wanted to re-install my bumper support, so I used what room I had. IAT's start out a 70 and rise to 125 at the end of the run, but I think they will do better on the road with more airflow to them.

Engine is untouched since the last setup. It was still running great so I didn't even bother to freshen it up. 357ci, 9.2-1 compression, 224/224 113lsa cam.

With a mix of 93 and Torco 110. (about 75% 110), a very conservative tune (21 degrees timing, 10.8-11.0 a/f) and 19lbs of boost, it made-

868 rwhp 832 rwtq

I'm happy with the results :) The car is still nice to drive, has all accessories including A/C, and is absolutely INSANE on the street.

I'll post some pics within the next few days, and hopefully some video too.

:eek: :bow:
nice job!
cant wait to see the pics and the videos!

how much did that cost, that sounds very similar to QMP turbo numbers. is 800ish really the limit of the LS1s? That one C4 by EFI God was 1200hp

congrats man, very nice setup. my next turbo car will be twins.

Holy crap !

I saw that you were selling two 61's and thought that you might have given up on the project....Glad to see you didn't!

Good job, as usual.

Glad to see it all come together! Good job!

Originally posted by zoomjrl
how much did that cost, that sounds very similar to QMP turbo numbers. is 800ish really the limit of the LS1s? That one C4 by EFI God was 1200hp


That would be a 96 LT1.. not LS1 :cool:

Awesome numbers man, way to keep up the fight!

Originally posted by texlurch
That would be a 96 LT1.. not LS1 :cool:

:bow: :D

Originally posted by INTMD8
I recently finished building a twin turbo system for my car.

Turbos are Innovative GT61's, P-trim .69 a/r on center, mounted low on either side of the block. Tubular motor mounts gave me room for induction. I had to notch the stock K-frame for compressor housing clearance. Headers are tubular, non-equal length 1 5/8 primarys.

I had Griffin build me 2 intercoolers which mount vertically in front of each tire. The are a bit small for the task, but I wanted to re-install my bumper support, so I used what room I had. IAT's start out a 70 and rise to 125 at the end of the run, but I think they will do better on the road with more airflow to them.

Engine is untouched since the last setup. It was still running great so I didn't even bother to freshen it up. 357ci, 9.2-1 compression, 224/224 113lsa cam.

With a mix of 93 and Torco 110. (about 75% 110), a very conservative tune (21 degrees timing, 10.8-11.0 a/f) and 19lbs of boost, it made-

868 rwhp 832 rwtq

I'm happy with the results :) The car is still nice to drive, has all accessories including A/C, and is absolutely INSANE on the street.

I'll post some pics within the next few days, and hopefully some video too.

Nice numbers. Any plans in making more kits?

Originally posted by zoomjrl
how much did that cost, that sounds very similar to QMP turbo numbers. is 800ish really the limit of the LS1s? That one C4 by EFI God was 1200hp

LS What?:D

nice numbers! the incon guys have cut "window" in their wheel-wells for airflow to the intercoolers. I belive they added some grating or something to protect the core from rocks and debris. Also, I think some added fans to the front side? Not sure if that would fit at all.

:bow:SWEET!! :bow:

:shock: DAYUM!!!!! That's almost 100rwhp more than the single and on 2 less psi boost. :eek:

Good job Jim!!!:bow: :bow: :bow: :bow: :bow:

congrats.......must feel awesome after all the work!

get those pics, and a dyno graph up.....id love to see those curves.

Excellent ;)

Sounds like it should get with the program :D

Looking forward to seeing some pics.

Marc

Originally posted by MEAN LT1
LS What?:D

I guess next time i do some latenight reading i should read before I ask questions. 800 some hp is great though.

I got 3 words for you: IN CAR VIDEO :D

Originally posted by 5.0THIS
I got 3 words for you: IN CAR VIDEO :D

that would be nice :D

www.ls1speed.com/movies/jimmay.WMV

how about this?

Looks like fun......

Some more stuff we want :) :
-In car, standing mile run
-Another runway burnout video
-Dyno video
-1/4 mile video
-PLENTY of pics

Shouldn't take too long to get that stuff ;)

Pic 1 (http://www.ls1speed.com/pictures/DSC01330.jpg)

Pic 2 (http://www.ls1speed.com/pictures/DSC01335.jpg)

Pic 3 (http://www.ls1speed.com/pictures/DSC01337.jpg)

Pic 4 (http://www.ls1speed.com/pictures/DSC01334.jpg)


Jim is not that good with the camara but you get the idea

Oh my god it's beautiful! :shock:

My goal of 600rwhp suddenly feels like child's play...

Awesome. Pure Awesome.

:metal:

Very nice

Originally posted by IDOXLR8
Nice numbers. Any plans in making more kits?

Yeah you building anymore kits? :D

Travis

Very nice indeed, but how is plug access? Looks like the headers cover the plugs.... BTW great numbers also..

Jose

Originally posted by jon_we4
Pic 1 (http://www.ls1speed.com/pictures/DSC01330.jpg)

Pic 2 (http://www.ls1speed.com/pictures/DSC01335.jpg)

Pic 3 (http://www.ls1speed.com/pictures/DSC01337.jpg)

Pic 4 (http://www.ls1speed.com/pictures/DSC01334.jpg)


Jim is not that good with the camara but you get the idea

Looks like he got rid of the LT4 intake... is that an in-house fabriated intake? Hogan, etc...?

Originally posted by Fast Caddie
Looks like he got rid of the LT4 intake... is that an in-house fabriated intake? Hogan, etc...?

Looks like an in-house. Quality look good though.

Thanks guys. :)


I don't have any plans to reproduce the system. Don't think it would be very profitable considering the time I have into it.

I'll take some pictures of the finished system and post them within the next few days.

Just installed a set of 3.31 gears tonight, so I'll have it at the track soon. (hopefully the 315 DR's will hook good enough to get me some MPH :) )

The intake is an RGR. I've been trying to get him to make some more, but he's pretty busy right now.

JZ 97 SS 1500- The front three plugs on either side are no problem. Both of the rear plugs are directly behind the collectors, and no, they are not easy to get to. But, in order to achieve my goals, compromises had to be made. I did not want to remove the air conditioning, and I'm also running dual intercoolers as to not block off any air going to the radiator/condensor. That alone pretty much ruled out having high mounted turbos.

Is this using the same eagle crank and rods???

Originally posted by jon_we4
www.ls1speed.com/movies/jimmay.WMV

how about this?

That made my heart beat a little faster.

Any pics of the dyno sheet?

Same eagle crank and rods. The engine is untouched since over a year ago when it was freshened up for the single turbo system.

Do you use ceramic coatings at all inside the engine? heads???

I'll post some pics and the dyno sheet soon.

Nothing in the engine was coated.

Got any numbers for your IAT? do you have any expectations at the track???

what are you using for tires???

On the dyno, iat's started out at 70 degrees and went up to 125 by the end of the run. The intercoolers are mounted just ahead of the front tires, so they weren't getting much airflow on the dyno. (havn't datalogged iat's on the street yet).

Raceweight is 3,800, I would like to be in the high 10's at 145+ on 315/35/17 Nitto DR's. I don't really care so much about the ET as I do the MPH.

totally badassed!!!

Looks great, congrats! :thumb:

Awesome numbers! :bow:


I have to ask, since I am building a setup very similar to your old one.

What'd you do with all the old parts like the headers and the Gt80? ;)

Also, I know i've asked you a while back, but after having some more time with it, what is your final opinion on the GT80? Seems alot of the Ford guys think its a little lazy.

Marty

Originally posted by INTMD8
On the dyno, iat's started out at 70 degrees and went up to 125 by the end of the run. The intercoolers are mounted just ahead of the front tires, so they weren't getting much airflow on the dyno. (havn't datalogged iat's on the street yet).

Raceweight is 3,800, I would like to be in the high 10's at 145+ on 315/35/17 Nitto DR's. I don't really care so much about the ET as I do the MPH.

You should... you should be hitting 9s with DRs at that speed.

Originally posted by Fast Caddie
Looks like fun......

Some more stuff we want :) :
-In car, standing mile run
-Another runway burnout video
-Dyno video
-1/4 mile video
-PLENTY of pics

Shouldn't take too long to get that stuff ;)

how about some 65mph burnouts as well:cool:

congrats on the #'s :bow:

Originally posted by The Highlander
You should... you should be hitting 9s with DRs at that speed.

This is a fully optioned 3,800 lb. car with a 6-speed and you think it should go 9's on a drag radial? It will do just fine...

Thanks everyone :)


97ChameleonTA- I sold my complete single turbo system. I was happy with the turbo, but I also don't have anything to compare it to. (I only would if I had tried different turbos with the same system).

Jim_H- Thanks for understanding. Most people see a HP # and automatically assume it's an all out drag car, which could not be further from the truth.

This car will not be in the 9's, ever. I break enough driveline components on radials, and with this amount of power and how heavy the car is, enough traction for 9's would practically guarantee me a flatbed ride home.

I'll take it to the track to see what kind of MPH it can pull, that's all I'm really curious about. I am not concerned at all about ET, I'm just satisfied with the amount of fun I have driving this car on the street. It's nice being able to drive around a 900 hp car unnoticed.

I see... and I understand the mph... its indicative of the power

Time to go surprise a few Ferraris and other exotics. I hope mine turns out as well. ;)

You do not need 800+rwhp to surprise a few ferraris ;)

Nice job Jim. I'm always impressed with your quality craftsmenship.

Two words though,,, more vids. :)

Mike

Originally posted by The Highlander
You do not need 800+rwhp to surprise a few ferraris ;)

You're right, I could surprise all of them. Then I could go play with the guys riding the Busa's. :D ;)

Be careful with the Turbo ones!! jaja... yes the busas would be
:Owned:

what all do you have done to the transmission and rear-end?

Nice numbers. Thats a low gear for a turbo car, you think your clutch will like that:D Your probably in the same boat I am, the car doesnt really hit hard till the top of second. In this case I guess a small gear would not matter. Have you touched anything more then 19? I started to play with 23psi, although my clutch doesnt seem to like it much.

Originally posted by sleeperz28
Nice numbers. Thats a low gear for a turbo car, you think your clutch will like that:D Your probably in the same boat I am, the car doesnt really hit hard till the top of second. In this case I guess a small gear would not matter. Have you touched anything more then 19? I started to play with 23psi, although my clutch doesnt seem to like it much.

I take it you run a street twin?

The transmission is a rebuilt 93 unit with the 2.97 first gear, street twin clutch, 12 bolt rearend. The short 1st gear in the trans definitely helps with the 3.31 gears.

It has very fast response in all the gears, but it doesn't hook on the street until I shift into 4th. (Still accelerating through 3rd but hazing the tires pretty good).

I havn't tried anything over 19 psi yet. I'm having alot of fun with it as it is :)

Jim,

Are you still using the MSBC-1?

Originally posted by Van
Jim,

Are you still using the MSBC-1?

Yes, and it's doing it's job, but I would be interested in one that had a programmable boost curve rather than just being able to adjust boost level and rate.

Yes, and it's doing it's job, but I would be interested in one that had a programmable boost curve rather than just being able to adjust boost level and rate.

I was thinking about trying the Turbosmart E boost. I was hoping somebody else had some experience with it besides the DSM guys....

Sweet, great job. Its all about the MPH :)

Originally posted by Van
I was thinking about trying the Turbosmart E boost. I was hoping somebody else had some experience with it besides the DSM guys....

Mightymouse on this board has been using one for a while or so he mentioned in this thread. (http://web.camaross.com/forums/showthread.php?s=&threadid=236336)

yes i do, you can adjust ramp up with the gate pressure and then have your choice of 3 boost steps that you can activate or deactivate at any time by touching the controller or buy switching it externally on your shifter, steering wheel etc.

great hp dude!

wow I saw your car at the open house this year. You really have some awsome talent bud. Your car diserves to be on the cover of magazines no joke.

Have you thought about submitting it to GMHT or Chevy Hi Performance?

:bow:

do you have any pics of the set up in the car.

Yes I would also like to see pics of the system in the car...

havent made it to the track yet?

Holy F

LMAO I totally agree with the dude above me HOLY FU**IN Sh*t That car is awesome after i get out of school Im planning on a TT Project for ym 94. I want around 600whp. Props man that car is insane. I want to see mor Turboed Domestics
Greg

You do not need a TT for 600rwhp.

I'm hoping 600rwhp-650rwhp on pump gas - single turbo.

And I see these guys and think "man my car is gonna be slow..."

I love these boards :D

well.. same happens to me.. im expecting 700rwhp out of my setup on pump gas possibly... but... When you get to see a few of the exotic setups... one seems like a kid.