The ultimate track frs/brz/86 FI system - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Takumi788 · 12-11-2019, 10:08 AM

I was reading through the JRSC or Edelbrock thread where it is being discussed which option is better for a daily/track car. My question is; considering all the forced induction options; if you were to build a track only twin, what forced induction system would you use and why? Engine swaps are not allowed.

strat61caster · 12-11-2019, 10:23 AM

jrsc
Cooling > torque that goes away when it's hot

subielife · 12-11-2019, 10:56 AM

Edelbrock, ran perfect last season and I am not gentle with my car. Would like to pull some more power out of her next season if I don't sell the BRZ. What plans do you have?

Takumi788 · 12-11-2019, 11:16 AM

Quote:

Originally Posted by subielife

What plans do you have?

Maybe something in the spring if my work bonus is what I think it will be. But I like doing research on these things before I pull the trigger. I am leaning towards Edelbrock bc of your setup. I read through the entire Edlebrock owners thread and it seems perfect. But I want to look more into other options. I am really interested in reliability and sustainability on 20-30min runs.

Takumi788 · 12-11-2019, 11:25 AM

Quote:

Originally Posted by strat61caster

jrsc
Cooling > torque that goes away when it's hot

I edited the OP to say "all forced induction options". Not just between edelbrock and Jackson Racing

amcp1 · 12-11-2019, 11:47 AM

I went JRSC C30 w/o e85. It's been a reliable DD and DE setup for 20k miles and counting.

Infinity · 12-11-2019, 12:19 PM

This video by DSport on youtube compares several FI kits on track:

[ame="https://www.youtube.com/watch?v=84hjcG1VrZc"]link[/ame]

The turbo kits appear to be faster than the superchargers.

amcp1 · 12-11-2019, 12:27 PM

Odd they didnt test the JRSC kit.

Infinity · 12-11-2019, 12:34 PM

Quote:

Originally Posted by amcp1

Odd they didnt test the JRSC kit.

They did test the Vortech, though. Since they are both centrifugal they should perform relatively similarly.

Takumi788 · 12-11-2019, 01:09 PM

What they didn't show is coolant/oil temperatures after a 20-30min session, supporting modifications and system reliability after time. Which is why I asked this question. I figure if anyone is going to give me true track tested reliability results it would be the forum.

subielife · 12-11-2019, 01:16 PM

As far as oil/coolant temp: never saw my coolant exceed 200 and oil went as high as 211.
This is with my Edelbrock SC, Koyo radiator. JR oil cooler and I'm running water only in my system. No catch can. This is at the NYST trying to outrun Jordan in his M3 so I was on it the whole time. I will say that fuel mileage is terrible compared to N/A but to be expected.

Reliability wise you know the story. It had been fantastic. It does smoke a little when I start it after sitting for a while but that burns off and then nothing. It consumes no oil. I put 1,623 track miles on it last season. 21,xxx total miles (over 3/4 of that is on track)

amcp1 · 12-11-2019, 01:42 PM

On my setup, I have the JR oilcooler kit and stock rad. Temps have not exceeded 260 for oil and 225 for coolant. I dont use hood venting or non stock ducting. This was on a 98-100 degree day

TommyW · 12-11-2019, 02:14 PM

Quote:

Originally Posted by amcp1

On my setup, I have the JR oilcooler kit and stock rad. Temps have not exceeded 260 for oil and 225 for coolant. I dont use hood venting or non stock ducting. This was on a 98-100 degree day

I was asking one of the 86 teams that are extremely successful in endurance racing what their big secret to their reliability was and it was a sub 115c oil temp which is 239f.

strat61caster · 12-11-2019, 03:35 PM

Quote:

Originally Posted by Takumi788

I edited the OP to say "all forced induction options". Not just between edelbrock and Jackson Racing

Same choice, I don't see a ton of well put together turbo kits being abused by track rats on this platform which means there's a chance you'll be troubleshooting. I'm sure there are reliable turbo builds out there, but they are unquestionably in the minority. imho track car with FI to me means you want more power with maximum seat time and minimal down time, take the solution that's proven even if it's not the fastest. More power than what the tuned superchargers can safely make means building the engine which is not cheap on this power plant and you get into motor swap costs or just buying a car that's faster like a pony car, Corvette, M, etc.

If it was to be used at all daily and back roads, I'm thinking Edelbrock for mine because I won't be too upset if I heat soak and lose some time on the rare track day I end up at and the low end torque would be nice for autocross and Street driving.

If you're chasing speed/$ then yes turbo all the way.

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12-11-2019, 10:56 AM	#3
subielife Subaru Ambassador Join Date: Sep 2013 Drives: 13 BRZ 18 Silverado Location: the track Posts: 90 Thanks: 120 Thanked 55 Times in 31 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Edelbrock, ran perfect last season and I am not gentle with my car. Would like to pull some more power out of her next season if I don't sell the BRZ. What plans do you have?

12-11-2019, 11:47 AM	#6
amcp1 Member Join Date: May 2017 Drives: frs Location: mo Posts: 77 Thanks: 2 Thanked 39 Times in 25 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I went JRSC C30 w/o e85. It's been a reliable DD and DE setup for 20k miles and counting.

12-11-2019, 12:19 PM	#7
Infinity Senior Member Join Date: May 2016 Drives: 2016 Scion FR-S Location: Maryland Posts: 173 Thanks: 49 Thanked 39 Times in 29 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	This video by DSport on youtube compares several FI kits on track: [ame="https://www.youtube.com/watch?v=84hjcG1VrZc"]link[/ame] The turbo kits appear to be faster than the superchargers.

12-11-2019, 12:27 PM	#8
amcp1 Member Join Date: May 2017 Drives: frs Location: mo Posts: 77 Thanks: 2 Thanked 39 Times in 25 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Odd they didnt test the JRSC kit.

12-11-2019, 01:16 PM	#11
subielife Subaru Ambassador Join Date: Sep 2013 Drives: 13 BRZ 18 Silverado Location: the track Posts: 90 Thanks: 120 Thanked 55 Times in 31 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	As far as oil/coolant temp: never saw my coolant exceed 200 and oil went as high as 211. This is with my Edelbrock SC, Koyo radiator. JR oil cooler and I'm running water only in my system. No catch can. This is at the NYST trying to outrun Jordan in his M3 so I was on it the whole time. I will say that fuel mileage is terrible compared to N/A but to be expected. Reliability wise you know the story. It had been fantastic. It does smoke a little when I start it after sitting for a while but that burns off and then nothing. It consumes no oil. I put 1,623 track miles on it last season. 21,xxx total miles (over 3/4 of that is on track)

12-11-2019, 01:42 PM	#12
amcp1 Member Join Date: May 2017 Drives: frs Location: mo Posts: 77 Thanks: 2 Thanked 39 Times in 25 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	On my setup, I have the JR oilcooler kit and stock rad. Temps have not exceeded 260 for oil and 225 for coolant. I dont use hood venting or non stock ducting. This was on a 98-100 degree day

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