Jackass w/ LS9: original build and new Jackass 2.0 updates!

[will69camaro]

Originally Posted by mikels

All numbers I quote are engine dyno as well - 1000 RWHP is a staggering number - and nearly impossible to achieve while maintaining the driveability level we have with this package.

Dave

Yea I dont suspect it will have the driveability as that package, but should be ok. Nice thing about turbos vs blowers is I can be more selective of when it makes big power.

I fully suspect that 1000rwhp will be in the neighborhood of 20psi, but time will tell.

William

[CarlC]

Thanks for the compliments William.

Originally Posted by will69camaro

......holley has not made a compatible sensor available yet on their standalone engine management systems.....

If anyone is running a Holley Dominator ECU using a VaporWorx controller purchased prior to November 2014, please send the controller back for modification. There is something in the Holley trigger that causes VW controller damage after a short time. It will simply stop working. There does not appear to be any problem with the HP systems.

[CarlC]

Originally Posted by mikels

We've had no issues running returnless fuel systems - even with big power / high flow - when you stage secondary pump to come in early enough to maintain stable control as fuel flow rates rise.

In Brian Thomson's Corvette, we have basically the same engine as JA2.0, but are running dual TI 267 pumps with staged Vaporworx PWM controlled system. Same E85 - same flow rate requirements. So far, has performed perfectly with no pressure falloff - although we have not yet tracked the car (coming soon!).

On both cars I integrated the flex fuel sensor to allow seemless transition between pump premium, E85 and everywhere in between. Mark even has the ECM measured ethanol percentage displayed on his dash. Yes, there is variation in ethanol %, but system accommodates all levels without issue.

Like Carl says - big power & high flow rates mean no easy solution - but we will get there!

Carl has been great to work with as development continues on Jackass 2.0 and TA Corvette systems. Having a system that will meet WOT E85 fueling requirements while delivering stable flow rates on gas @ idle WITHOUT fuel heating issues is an incredible demand. All this would not be possible without his support.

Primary reason we went to E85 was not for power, but for cooling. Power gains are just side benefit (6-8% is what we measured).

I think we have reached a practical limit for the Thomson Automotive 7.0L SC package. We've passed point of diminished returns as far as lap time reduction (will still help in 1/4 mile and standing mile events). However, as Mark can also attest - being traction limited to ~80-100 MPH is something you'll never tire of!

Dave

Thanks Dave. It's been a pleasure working with you and Mark.

Now, if TI would just make a real module with twin 267's both the flowrate and control challenges would be covered. There's likely not enough aftermarket demand to justify the tooling costs.

So, yes, we can do not only dual 267's, but triple setups as well. Be on the lookout for a mean grey TT G8. He ran the Power Tour with the triple setup with barely enough time after the complete build to drive to the start. No problems for a system that can flow enough fuel to power well over 1800hp @ 60amps. These are the same pumps used in the Hellcat, so there is OE reliability + plenty of overhead.

.....and there's new products coming

[Stielow]

I'm going to the Fore module that will allow me to have 2 TI 267 pumps and I will keep on of the CTS-V modules for primary pump. So when I'm cruising the car will run off the CTS-V pumps then once I hit boost I will have 2 TI 267 pumps plus the CTS-V module.....That should fix it.....

I would like to thank Carl for all the time on phone calls on sorting out my fuel system. It is fun to talk to a guy that gets it.

On a side note I hurt the yoke on the drive shaft. So out with the cast Spicer part and in with a 4130 part. I pulled the trans and D&D Perf looked over the trans and it was fine. I drove the car this morning and it is dead quiet. We found the issue after the Waterford track testing and the driveline developed a ticking noise.

So the development continues. Test car, break parts, fix, repeat.

[will69camaro]

Originally Posted by CarlC

Thanks for the compliments William.

If anyone is running a Holley ECU using a VaporWorx controller purchased prior to November 2014, please send the controller back for modification. There is something in the Holley trigger that causes VW controller damage after a short time.

No problem Carl!

I'll look at the date on my box and see, but I may have to send it back to you yet again to have it modified if that's the case. I still have a bit of time before the car is running so no big rush.

Originally Posted by CarlC

Thanks Dave. It's been a pleasure working with you and Mark.

Now, if TI would just make a real module with twin 267's both the flowrate and control challenges would be covered. There's likely not enough aftermarket demand to justify the tooling costs.

So, yes, we can do not only dual 267's, but triple setups as well. Be on the lookout for a mean grey TT G8. He ran the Power Tour with the triple setup with barely enough time after the complete build to drive to the start. No problems for a system that can flow enough fuel to power well over 1800hp @ 60amps. These are the same pumps used in the Hellcat, so there is OE reliability + plenty of overhead.

.....and there's new products coming

I like this idea of single CTS- V as primary and secondary being bigger pumps. I'll have to look into the Hellcat pumps and see what can be worked out.

[CarlC]

The pump in the Hellcat module is a 267 but the output is reduced to about 318lph due to jet pump needs. Fitting the Hellcat module is tough due to the angled hat.

[CarlC]

Originally Posted by will69camaro

No problem Carl!

I'll look at the date on my box and see, but I may have to send it back to you yet again to have it modified if that's the case. I still have a bit of time before the car is running so no big rush.



I like this idea of single CTS- V as primary and secondary being bigger pumps. I'll have to look into the Hellcat pumps and see what can be worked out.

Yours was April 2014, so it's needs a bit of surgery.

[syborg tt]

Originally Posted by Stielow

So the development continues. Test car, break parts, fix, repeat.

Okay that was funny and I want to Thank you and all of the guys here that are sharing information with us. I have learned so much reading your threads and who I need to go to when I need the right part.

Thank you again for sharing your knowledge

[will69camaro]

Originally Posted by CarlC

Yours was April 2014, so it's needs a bit of surgery.

Lets take our discussion to my thread! I'll make a comment there!

Appreciate the help and thanks Mark for letting us hijack your thread with fueling tech.

William

[hersheys69z]

Hi Mark
I'm thinking of buying a new 2015 Z/28 and was just wondering if you guys have something better coming down the pipe next year that would make me regret it?