|
Tracking / Autocross / HPDE / Drifting What these cars were built for! |
|
Thread Tools | Search this Thread |
06-15-2015, 06:54 AM | #1 |
Join Date: Nov 2012
Drives: JDL Turbo FRS, 335SC BRZ (ret)
Location: Lehigh Valley, PA
Posts: 932
Thanks: 368
Thanked 1,548 Times in 525 Posts
Mentioned: 380 Post(s)
Tagged: 6 Thread(s)
|
High boost, e85, fuel starvation on a road course: What's everyone doing in 2015?
I recall this problem being quite prevalent in 2013 and some have gone from just keeping the tank topped off, to others doing a full return conversion. What's the verdict now 2 years later? Anyone make headway or something relatively simple? We are pushing 19 psi on our Sprintex build and fuel starving in long left hand sweepers as full as 3/4 tank on street tires (re71r).
Unfortunately keeping the tank topped off is not really an option for us. By the end of a 20 minute session with 19 psi and e85, we'll be at half tank before it is over. Our goal is to set it up for NASA racing next year and this hurdle is first. Surge tanks look like a decent option, but the size we'd need might be a limitation. What is everyone doing? |
06-15-2015, 11:41 AM | #2 |
Senior Member
Join Date: Jun 2012
Drives: Nevermorange FRS
Location: Seattle, WA
Posts: 4,160
Thanks: 755
Thanked 4,200 Times in 1,803 Posts
Mentioned: 77 Post(s)
Tagged: 1 Thread(s)
|
You want this. It's been a big hit with road racers, especially those who run in classes where fuel cells aren't allowed or are cost prohibitive.
Holley Hydra-Mat [ame]http://www.youtube.com/watch?v=yfE1v65fNZI[/ame] [ame]http://www.youtube.com/watch?v=4rG97UuVgmQ[/ame]
__________________
SCCA T4 - FRS
|
06-15-2015, 01:49 PM | #3 | |
Join Date: Jul 2012
Drives: S2000 CR
Location: Orange County
Posts: 14,537
Thanks: 8,930
Thanked 14,187 Times in 6,839 Posts
Mentioned: 966 Post(s)
Tagged: 14 Thread(s)
|
Quote:
I think you're confusing a fuel cell with a surge tank. I'd be shocked if you needed more than a minimally sized surge tank; a lot of the high hp cars i drive have small (0.5L ish capacity) surge tanks. The surge tank is just a buffer between your fuel tank and injectors. |
|
06-15-2015, 09:37 PM | #4 | |
Join Date: Nov 2012
Drives: JDL Turbo FRS, 335SC BRZ (ret)
Location: Lehigh Valley, PA
Posts: 932
Thanks: 368
Thanked 1,548 Times in 525 Posts
Mentioned: 380 Post(s)
Tagged: 6 Thread(s)
|
Quote:
I think the question is really are people using an off the shelf setup or still converting to a return system? In looking around I see a ton of universal surge tanks (we'd have no problem making our own) but in this case it would be much easier to go off the shelf. I'd like to see what folks have been running and whether anyone has had issues with a certain size tank. |
|
06-15-2015, 09:42 PM | #5 | |
Join Date: Jul 2012
Drives: S2000 CR
Location: Orange County
Posts: 14,537
Thanks: 8,930
Thanked 14,187 Times in 6,839 Posts
Mentioned: 966 Post(s)
Tagged: 14 Thread(s)
|
Quote:
How much volume are you needing to push through the system? Also, I was pointing out the RE71R... they're sold/marketed as a street tire, but have more grip than entry level R-comps at the moment. |
|
06-16-2015, 08:41 AM | #6 | |
Join Date: Nov 2012
Drives: JDL Turbo FRS, 335SC BRZ (ret)
Location: Lehigh Valley, PA
Posts: 932
Thanks: 368
Thanked 1,548 Times in 525 Posts
Mentioned: 380 Post(s)
Tagged: 6 Thread(s)
|
Quote:
Agreed on the RE71Rs...they are indeed better then r-comps from 5 years ago. We've sold nothing but that to autoxers this year and for good reasons. But we will be putting on R7s later on and that should generate a good bit more in the sweepers, which won't help our problem any. |
|
06-16-2015, 12:45 PM | #7 | |
Join Date: Jul 2012
Drives: S2000 CR
Location: Orange County
Posts: 14,537
Thanks: 8,930
Thanked 14,187 Times in 6,839 Posts
Mentioned: 966 Post(s)
Tagged: 14 Thread(s)
|
Quote:
|
|
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Left Hand turn fuel starvation on WOT | Huehuecoyotl | Tracking / Autocross / HPDE / Drifting | 105 | 08-05-2021 07:12 PM |
Fuel Starvation issues? YAY OR NAY? | track_warrior | Tracking / Autocross / HPDE / Drifting | 23 | 10-22-2013 11:19 AM |
Oil starvation in high loads | jdcorbitt3 | Engine, Exhaust, Transmission | 7 | 06-01-2013 10:46 PM |
FA20 Fuel lean at high boost fix | cf6mech | Forced Induction | 15 | 05-20-2013 03:33 PM |
Fuel Starvation | feldy | Tracking / Autocross / HPDE / Drifting | 1 | 06-09-2012 10:14 AM |