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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.

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Old 07-04-2015, 01:04 AM   #29
FRS Justin
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Originally Posted by frsqc View Post
id probably say 1-2 car lenghts, but it would be even more if we kept going ( i dont like highspeed) lol.
Nice time on your car by the way! mid 13's would be quite fun.
In this argument though, comparing normal gas like 91-94 with E85 is not really comparable. because then the rsx could do the same.(which its not).
I know i need better tires and it would help alot but my whole point was that he has 220-230whp with headers/intake/manifold(im guessing now from researching), and all i ask is will we be able to see such numbers IF companys were to make manifolds/cams ect.. or did we just hit the ceiling already?

also , , final gear, radials/slicks w/e yeah itll make your 1/4 mile faster but im more interested in engine potential.
I agree on the 94 vs E85 comparison
As far as parts their really isn't any bolt on big power N/A stuff. I wouldn't really buy into a intake believe me if it made gain people would be out running me and Friebruz. With this platform being so new I would not expect any real parts for a couple more years
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Old 07-04-2015, 03:18 AM   #30
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Originally Posted by steve99 View Post
fullblown and velox have done intake manifolds but judging from lack of info, dyno results ect I suspect they didn't gain much NA. else i am sure they would be advertising the gains. maybe they work well FI ??

Intake Manifold development
http://www.ft86club.com/forums/showthread.php?t=82479

fullBlown Motorsports intake manifold
http://www.ft86club.com/forums/showthread.php?t=56850



heads
http://www.ft86club.com/forums/showthread.php?t=61789
To be fair.. Velox isn't a big company.
He's testing different runner sizes.
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Old 07-04-2015, 07:42 AM   #31
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To be fair.. Velox isn't a big company.
He's testing different runner sizes.
yes, i am not knocking them, their product and developmemt look first class and its great to see somone put in so much effort into developement. I think i read that even the velox guys said they were primarily designing the manifold for FI.

It does appear at this time that getting more out of NA with out extensive mods is going to be difficult , the intake manifold is the last hope for bolt on easy power mods.

it does look expensive though.
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Old 07-04-2015, 08:57 PM   #32
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Quote:
Originally Posted by FRS Justin View Post
lets do some math equation is time vs weight to move a known distance equals hp


Your HP is 192.63 computed from your vehicle weight of 2850 pounds and ET of 14.3 seconds.


Your HP is 185.87 computed from your vehicle weight of 2750 pounds and ET of 14.3 seconds.


Your HP is 179.11 computed from your vehicle weight of 2650 pounds and ET of 14.3 seconds.



I ran 13.47 at 2750 in 90% humidity


Your HP is 222.39 computed from your vehicle weight of 2750 pounds and ET of 13.47 seconds


Now I did have slicks and so that's a advantage but as far as a base hp no corrections the math is what it is


So with stock tires to run a 14.3 is pretty awesome I would say that's a solid 13.9 run with tires so the only thing left is tune and exhaust
exactly how bad did he beat you 1 car 10 cars




I understand other factors apply like trans gear ratios if he has a 5 speed to your 6 speed

Trap speed is a better judge as ET can be very different based on driver.

Quote:
Originally Posted by FRS Justin View Post
reaction time has nothing to do with ET'S

True, but shifting and launching does. As a general rule trap speed is a better judge, but it's still nothing compared to a dyno.



Quote:
Originally Posted by steve99 View Post
fullblown and velox have done intake manifolds but judging from lack of info, dyno results ect I suspect they didn't gain much NA. else i am sure they would be advertising the gains. maybe they work well FI ??

Intake Manifold development
http://www.ft86club.com/forums/showthread.php?t=82479

fullBlown Motorsports intake manifold
http://www.ft86club.com/forums/showthread.php?t=56850



heads
http://www.ft86club.com/forums/showthread.php?t=61789

I think the Fullblown manifold was designed to take higher pressures for FI and the Velox manifold is still in R&D. The Velox manifold is a velocity stack design so it should work for either , but we'll have to see when it's done.
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Old 07-05-2015, 12:08 AM   #33
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Trap speed is a better judge as ET can be very different based on driver.




True, but shifting and launching does. As a general rule trap speed is a better judge, but it's still nothing compared to a dyno.




I think the Fullblown manifold was designed to take higher pressures for FI and the Velox manifold is still in R&D. The Velox manifold is a velocity stack design so it should work for either , but we'll have to see when it's done.




Trap speed is effected by shifting and launching too.
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Old 07-06-2015, 08:56 AM   #34
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So what would you do then? Leave the intake ports alone and polish the exhaust port? I'm just asking because I'm going to be putting an engine back together. Not doing anything to it, but if I have the heads off then maybe I can have it polished.
Polishing only recommended on exhaust side the intake actually functions better if air fuel can tumble if left rough. Although today's injectors are a much finer spray pattern than 20 years ago. Heads are my last concern on my build as I am still trying to see if cams will be available in the next 6 months.

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At least clean up any casting flash.
I would definitely do this but the stock casting is pretty clean

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You have to balance velocity and mass.

I'm okay with the velocity dropping, if the total mass of air being displaced is still larger.
Which is why I am torn on what to do. Adding almost 300cc's to displacement.
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Old 07-06-2015, 09:10 AM   #35
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Originally Posted by celek View Post
Polishing only recommended on exhaust side the intake actually functions better if air fuel can tumble if left rough. Although today's injectors are a much finer spray pattern than 20 years ago. Heads are my last concern on my build as I am still trying to see if cams will be available in the next 6 months.
If you haven't known already, piper cams has three options.

http://www.pipercams.co.uk/pipercams...d=SUBFA20BP300
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Old 07-06-2015, 11:19 AM   #36
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If you haven't known already, piper cams has three options.

http://www.pipercams.co.uk/pipercams...d=SUBFA20BP300
Would like to see results instead of specs. but that Rally 12.5mm Lift looks fun.
Pricing is not horrible Either and I bet Cosworth will be using them as well being a UK company.

http://www.power-division.com/home.php
Has them in the works.... My bet is SEMA release and there pricing is more affordable especially with the shipping.
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Old 07-06-2015, 01:51 PM   #37
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Would like to see results instead of specs. but that Rally 12.5mm Lift looks fun.
Pricing is not horrible Either and I bet Cosworth will be using them as well being a UK company.

http://www.power-division.com/home.php
Has them in the works.... My bet is SEMA release and there pricing is more affordable especially with the shipping.
Yea id like to see some results too, I think there's at least one guy on the forum running a set of their cams.

I'm considering the rally cam as well, I'm hoping sema provides some fun cam options in the states though if not ill be running the rally cam.
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Old 07-06-2015, 04:33 PM   #38
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Yea id like to see some results too, I think there's at least one guy on the forum running a set of their cams.

I'm considering the rally cam as well, I'm hoping sema provides some fun cam options in the states though if not ill be running the rally cam.
I will be first to know Already booked Airfare
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Old 07-06-2015, 07:35 PM   #39
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Originally Posted by FRS Justin View Post
Trap speed is effected by shifting and launching too.


True. I can't seem to find it now, but I could swear there was a way to calculate HP based on ET and trap speed together to remove the variance. Then again, you could just do both equations and average the results...


Kinda important in the Supra world as most of them spin off the line and can't get a good ET, but have crazy trap speeds
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