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Long Beach GP: Lexus LFA (pro driver Tanaka) vs IS-F CCS-R racing car (Gushi)

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Old 05-04-13, 03:08 PM   #1
05RollaXRS
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Default Long Beach GP: Lexus LFA (pro driver Tanaka) vs IS-F CCS-R racing car (Gushi)

Hotlaps from both cabin.

I could not believe how a stock LFA destroyed even a dedicated stripped out IS-F CCS-R racing car

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Old 05-04-13, 03:38 PM   #2
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Someone lend him a go pro and suction cup
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Old 05-04-13, 11:29 PM   #3
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The LFA makes over 140hp more than the IS-F for starters.
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Old 05-05-13, 07:46 AM   #4
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Also surprised. The IS-F CCS-R is stripped down so weighs less than the LFA, and has a ton of reinforcements stiffening up the body to improve cornering dynamics. I guess it just shows how good a car the LFA is from the bottom up.

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The LFA makes over 140hp more than the IS-F for starters.
Lexus has repeatedly stated they did not make any direct modifications to the IS F engine in the CCS-R conversion, but that doesn't mean it's making the same hp. Stated CCS-R modifications such as increased airflow, revised intake, racing exhaust, etc., all can increase hp.

That said, it's obvious from the video that the LFA has a power-to-weight advantage.
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Old 05-05-13, 10:30 AM   #5
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if Uwe Kleen was the driver of the isf it would have been a different outcome.....or lexus corp. made it that way so spectators would think a stock LFA is ridiculously faster than the ccsr... we will never know...

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Old 05-05-13, 10:46 AM   #6
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Originally Posted by TF109B View Post
The LFA makes over 140hp more than the IS-F for starters.
also...a modified isf is sitting right around 400 hp/380 tq , stock lfas dyno around 450/320 tq so its not that huge of a power difference... ccsr 3000 lbs, stock lfa 3400 lbs.. something doesnt add up
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Old 05-05-13, 01:09 PM   #7
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The #003 LFA 451 wheel HP LFA was where on the same FP dyno and same day a 300 HP STi dyno'ed at only 190 wheel HP. FP said it was a very "pessimistic" dyno.

Depending on the dyno, LFAs have dyno'ed from 450 wheel HP to 470 - 480 wheel HP all the way up to 515 wheel HP (MD automotive).

The weight reduction is a far bigger factor for the CCS-R, but then again the power difference is just way too big to overcome by weight reduction.

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also...a modified isf is sitting right around 400 hp/380 tq , stock lfas dyno around 450/320 tq so its not that huge of a power difference... ccsr 3000 lbs, stock lfa 3400 lbs.. something doesnt add up
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Old 05-05-13, 01:47 PM   #8
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Quote:
Originally Posted by 05RollaXRS View Post
The #003 LFA 451 wheel HP LFA was where on the same FP dyno and same day a 300 HP STi dyno'ed at only 190 wheel HP. FP said it was a very "pessimistic" dyno.

Depending on the dyno, LFAs have dyno'ed from 450 wheel HP to 470 - 480 wheel HP all the way up to 515 wheel HP (MD automotive).

The weight reduction is a far bigger factor for the CCS-R, but then again the power difference is just way too big to overcome by weight reduction.
all very true... still doesnt add up to me. I need to find a stock lfa to run on a track
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Old 05-05-13, 02:43 PM   #9
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all very true... still doesnt add up to me. I need to find a stock lfa to run on a track
It has been done already for a standard IS-F (although, the CCS-R IS-F above is far from a standard IS-F, I realize).

Although, LFA will tend to pull harder away after its 125 - 126 mph trap speed. For example, 0 - 165 mph has been recorded in LFA coming in only 21 seconds.

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Old 05-05-13, 02:57 PM   #10
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Quote:
Originally Posted by amgone75 View Post
if Uwe Kleen was the driver of the isf it would have been a different outcome.....or lexus corp. made it that way so spectators would think a stock LFA is ridiculously faster than the ccsr... we will never know...
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also...a modified isf is sitting right around 400 hp/380 tq , stock lfas dyno around 450/320 tq so its not that huge of a power difference... ccsr 3000 lbs, stock lfa 3400 lbs.. something doesnt add up
At the Laguna Seca event (when Scott Pruett was giving hotlaps in the IS F CCS-R - I still need to post my GoPro video from that), he told me the LFA is still faster around the track. That's not surprising; I think the surprising thing is how much faster the LFA is even in straight line acceleration.

BTW, a modified IS F needs a ton of extra juice to hit 400hp dyno. That automatic transmission sucks up a lot of power. Stock IS Fdynos around 350 IIRC. Not going to make it to 400hp at the wheels just off intake/exhaust.
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Old 05-05-13, 11:35 PM   #11
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I still think my statement is pretty close. LFA at or around 560hp. IS-F at or around 420hp. Even this IS-F, I would think makes maybe 20hp more. But maybe the LFA is making more power than advertised.
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Old 05-06-13, 11:49 PM   #12
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Ah the red corporate LFA! I had good times with that car for the few days corporate let me borrow for my wedding. I think that is what swayed my decision to get the car. LoL
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Old 05-14-13, 12:22 PM   #13
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lems/icodes ISFs ( from japan ) are doing great work with the ISF . the ccsr is stripped down alot more than lems/icodes isf. lems/icode isf fuji lap time 154.3
stock lfa 155.342
now im not at all saying the F is dominating the LFA... just friendly conversation lems/icode is doing great thing with the F.
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Old 05-14-13, 01:40 PM   #14
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Probably running better tires? The LFA's aren't bad, but nowhere near the best.
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Old 05-14-13, 05:35 PM   #15
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Quote:
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Probably running better tires? The LFA's aren't bad, but nowhere near the best.
The best lap time was by Akira Iida who ran a 1:54 in the Lexus LFA (Option auto video), if you remember around Fuji. Akira Iida got 267 km/h on the back straight while the IS-F CCS-R got to 250 km/h in the video above so still a big difference in the straights.

LFA's Potenza tires are considered some of the most average tires in the supercar world. Not even ranked high-grip. Michelin SS and Pilot Cup racing slick tires are way more stickier than the one's LFA is wearing.
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Old 05-14-13, 05:35 PM
 
 
 
 
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