RC F (2015-present) Discussion topics related to the RC F model

RRracing Supercharged RCF vs Hellcat on 1/4mi track

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Old 09-13-17, 08:18 PM
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cosmo1
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Don't hate brother just stating the facts. I was actually considering the sc kit but I knew if anything happened down the road I would be sol and not willing to sink thousands more into the rcf. It seems like a solid kit so lets all see what happens as more miles on put on it...
Cheers...
Old 02-04-18, 05:11 AM
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SmurFPwr
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Originally Posted by cosmo1
The rcf motor was not setup for forced induction from the factory so don't expect it to last too long with that sc.. Can't imagine the cost to rebuild or replace the rcf motor...
neither was an Chevy lq9 truck block but they make 900hp all day (safely) with a turbo.
Old 02-04-18, 05:43 AM
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Exactly. 6 psi is nothing on the engine but huge on the performance. Ill gamble on it.
Old 02-04-18, 06:07 AM
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Vitveet
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What was the trap speed and eta of the Hellcat? I've personally raced one in my ISF at the strip and I'm here to tell you that if you won that race, it was soley off of driver error on the Hellcat, unfortunately. Stock (with drag slicks to hook), the Hellcat ran a 10.9 at 129.x mph . That's a far cry away from a 12.0 @ 120.
Whats been your best run/time at the strip with the supercharger? Honestly we have plenty of guys running 11.9-12-1 @ 118-119 in FBO IS-F's with drag radials.
Hopefully you've "broken it in" more and have gotten some better results since this vid! Car sounds good as well! Give us more feedback!

V.
Old 02-04-18, 06:40 AM
  #20  
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Originally Posted by cosmo1
Don't hate brother just stating the facts. I was actually considering the sc kit but I knew if anything happened down the road I would be sol and not willing to sink thousands more into the rcf. It seems like a solid kit so lets all see what happens as more miles on put on it...
Cheers...
Its a year now, there are about 20 kits installed in RCF/GSF, with zero engine or transmission problems, and I know that a bunch of the cars are daily driven and have over 10,000 miles on them since the SC install. I am not even mentioning all the track time we have put into the "Red Devil."

We will be coming out with higher power options, but the kit as-is is very conservatively tuned for maximum reliability.

One of the keys to longevity of the entire drivetrain is limiting torque output in the lower RPM's, which is one of the reasons I like the Centrifugal blowers in these applications.

Rafi
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Old 02-04-18, 09:31 AM
  #21  
ssmoked
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Originally Posted by Vitveet
What was the trap speed and eta of the Hellcat? I've personally raced one in my ISF at the strip and I'm here to tell you that if you won that race, it was soley off of driver error on the Hellcat, unfortunately. Stock (with drag slicks to hook), the Hellcat ran a 10.9 at 129.x mph . That's a far cry away from a 12.0 @ 120.
Whats been your best run/time at the strip with the supercharger? Honestly we have plenty of guys running 11.9-12-1 @ 118-119 in FBO IS-F's with drag radials.
Hopefully you've "broken it in" more and have gotten some better results since this vid! Car sounds good as well! Give us more feedback!

V.
my best time in the HC is 10.9@127 (actually pretty consistent) with nitto 555r, but that required negative 1000 DA. In full summer heat and humidity, I estimate 11.3-11.4
Old 02-04-18, 09:39 AM
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mvblum
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Originally Posted by RRRacing
Its a year now, there are about 20 kits installed in RCF/GSF, with zero engine or transmission problems, and I know that a bunch of the cars are daily driven and have over 10,000 miles on them since the SC install. I am not even mentioning all the track time we have put into the "Red Devil."

We will be coming out with higher power options, but the kit as-is is very conservatively tuned for maximum reliability.

One of the keys to longevity of the entire drivetrain is limiting torque output in the lower RPM's, which is one of the reasons I like the Centrifugal blowers in these applications.

Rafi
I never understood why there were thoughts the motor couldnt handle it. I've seen countless S2000's put out well over 400 hp at the wheels on a 2.0 4cyl without any long term effects on anything but the OEM clutch. With as robust as the motor is I couldnt see the added power being terrible to longevity.
Old 02-04-18, 10:11 AM
  #23  
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Originally Posted by mvblum
I never understood why there were thoughts the motor couldnt handle it. I've seen countless S2000's put out well over 400 hp at the wheels on a 2.0 4cyl without any long term effects on anything but the OEM clutch. With as robust as the motor is I couldnt see the added power being terrible to longevity.
Because the static compression of the RC F is 12.3, adding 6 psi, the effective compression ratio is over 17.5, that's a lot of pressure for stock pistons and rings. But as RR-R stated, there haven't been any problems, so it appears the 2UR-GSE is up to the task. I'm seriously considering going with the RR-R SC system, I've reached out to a couple owners and the feedback has been great, but just want to perform more research.
Old 02-04-18, 10:17 AM
  #24  
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Originally Posted by Vitveet
What was the trap speed and eta of the Hellcat? I've personally raced one in my ISF at the strip and I'm here to tell you that if you won that race, it was soley off of driver error on the Hellcat, unfortunately. Stock (with drag slicks to hook), the Hellcat ran a 10.9 at 129.x mph . That's a far cry away from a 12.0 @ 120.
Whats been your best run/time at the strip with the supercharger? Honestly we have plenty of guys running 11.9-12-1 @ 118-119 in FBO IS-F's with drag radials.
Hopefully you've "broken it in" more and have gotten some better results since this vid! Car sounds good as well! Give us more feedback!

V.
Here’s a random video that I just threw up after I had the linelock kit installed. My expectation is the get the car Low 11s this year with proper drag radial set up along with a littler DA help.
Old 02-04-18, 10:45 AM
  #25  
Vitveet
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What was the ET and mph there?!

V.
Old 02-04-18, 11:06 AM
  #26  
FunRCF
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Originally Posted by Vitveet
What was the ET and mph there?!

V.
That was 12.12@121 mph
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Old 02-04-18, 01:04 PM
  #27  
Vitveet
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Very nice! Love to see the F cars hitting the strip! Especially modded ones!
i believe the best time we've seen from a supercharged ISF has been an 11.5 )don't quote me on that) at 130mph (maybe 129). So that definitely tells me you have a bit left in her!

V.
Old 02-04-18, 04:40 PM
  #28  
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Originally Posted by Vitveet
Very nice! Love to see the F cars hitting the strip! Especially modded ones!
i believe the best time we've seen from a supercharged ISF has been an 11.5 )don't quote me on that) at 130mph (maybe 129). So that definitely tells me you have a bit left in her!

V.
I think for ISF was 11.3 @ 129.
For RCF was 10.8 @ 131mph (probably on best prepped tracked with race gas 109 octane).

Looking forward to RR Racing providing higher hp supercharger options.
Old 02-05-18, 12:29 AM
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Old 02-05-18, 09:28 AM
  #30  
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Originally Posted by happy1977
lmao. This is hilarious Noted for future videos.


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