nice i need to get ahold of kelford after i buy my block, trying to get there na stage 1 intake cams and fi stage 2 exhuast cams without buying two sets. ill have to run more boost for the same power but im hoping that will help me expand the powerband a bit and still rev it out. hopfully the direct port with pure meth will help out alot to increase efficency too/
cant wait to see your number on high boost, personally i think your gona see over 700 since around 28-29 pounds of boost is supposedly where the 6765 produces peak airflow.

 

ya, with the prelim numbers on restrictive exhaust last week i'm thinking mid 600's easily. I'm actually a little nervous about the numbers. Last night at 22psi this thing was a monster and scares me to death on the street even with the 305 drag radials. I'm not sure i will keep the boost up that high for street use.

 

Jeff,
When I was doing 650rwhp on pump gas, I found I floored it a lot less!!! Well during regular driving.....had to start looking for different types of races at that point.

When I saw a vid of the car from inside going through 150mph like it was nothing, I realised how fast it really was......

on 800+rwhp the thing was insane.....felt like rear was driving around front every chance it could.

Enjoy it!!!!

Tom

 

So true at that power level. I rode in abushong504's car and that was the most memorable thing about it.. Seemed like the rear was tryin to pass the front...

Would like to see Wat this 76 can really do on E85....

 

What is your exhaust set up jeff? And are you doing all pump gas tunes or are you running race fuel for the high boost?

 

have a link to this video? or could u pm me it i wanna see it! 800 whp auto sounds like a blast

 

it's freaky! Mine was 2 hands on the wheel to control it for sure.

I have a modified stock exhaust and a SP boost activated cutout. I updated my profile on here with my full car setup.

i run e85. I had a decent pumpgas tune up to 18psi but i never dynoed it. I used my knock sensor on the street to set a safe tune. I switched to e85 and love it. The increased exhaust gas volume increased my spool by around 800rpm on all my logs so far.

 

so this log was on E85 and that an 800 rpm faster spool? Seems lazy, and on pump would be worse. Would really make people think about going to a 76mm. A 76 would prolly not be spooled to 18psi until around 5200rpms on E85 and way lazier on pump.

Be interested to see how the new exhaust/turbine setup changes the curve.

 

that's a bad picture to use for change because i altered other things on the car with that. that image is the large housing and oem exhaust with cutout. Cutout doesn't open until 11psi so up to that point it's stock exhaust and i also do'nt have my boost controller dialed in properly so it was having to add 20% duty cycle over what my base was which took it a couple hundred rpms to ramp up to. So that picture is the cause of going to a larger housing and not adjusting my boost controller.

here is the first spool with my previous setup with nothing changed but e85.

 

so i lost about 600 rpm spool going to a larger housing and not having dialed my boost controller in properly. I also found a significant boost leak at the turbo flange that could have caused some lag too. Should be fixed now.

 

rich, here are some other dyno's to compare. Also if you look at my 19psi i'm not STARTING the WOT until 4k rpms so its only taking 600rpms to get to 19psi.

So these dynos show that the jtran 4088r turbo (similar size to mine) starts well below 4k rpm and is only making 11psi at 4k rpms.

The other is a momentum kit with a gt35r. Smaller turbo and they are taking 4200 rpms to get to 14psi.

I'll start my pull at 3k rpms and i'm sure it will spool a lot sooner than that log.

 

that sensor calibration is wrong^ that car runs 17.5-18 psi.

for the momentum chart*

 

ya 4000ish is more expected. 4600+ is like my twins which feel very laggy.

 

That makes a whole lot more sense now. This is the setup that Hal tuned I think, where you put about 516whp on the DD. I was comparing it to one of my customers who made 513whp on that (DD at IP) dyno at about 18psi as well.

So the efficiency is on par as far as hp/psi goes. I think you guys had cams and a Cossworth IM with that setup though, and my customer had just a simple short block build.

 

Yep that was the one, car has 262's cosworth cnc heads and IM.That graph is from when we first got it back. Did some minor changes and it made 601 yesterday on the DJ.

 

The thread i pulled them from said 14-16psi so you might want to go edit that.

Also remember i didn't go wot until 4k rpms and most of the people post dynos that go WOT at 3k rpms. It was the same outcome when i started WOT at a higher boost level on my old housing also. 600rpm to build from vac to 19psi isn't bad. it definitely doesn't feel laggy when i step on the gas.

 

601 at 18psi on a single GT35?

 

Binder, I was ill informed about the problem with their dyno sensor, apparently they have it fixed for the new graph.

yeah, they found some exhaust leaks pre turbo, fixed them and put a production cross over pipe on the car(previously had flex coupler rather than slip joint). It had collapsed. picked up a couple HP/TQ and spooled faster. 17-18psi at 3750.

Dont wanna thread jack this thread, any more questions shoot me a pm or find me on aim(taylor@momentumperformance.com)

 

I'm guessing this ridiculous fast spool is a part of E85 and lots of timing?
If so I want to see how it spools on 93 octane

 

The FMIC arrived today, and I got right to it. Really wanted to see how this will work out, and it is turning out better than expected. The end tanks came seperated from the core, because I did not know how fitment would work out. This is a 22x12x4.5" core.

The old 25x9x3.5":



The new:



Inlet is split, so that the air is diverted in to the top half of the core as well:













I will make some brackets in the next couple of days and post once it is mounted. This thing is massive and will support whatever turbo one can throw at it.