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.2 GT3RS vs .2GT3 Who wins in a roll race?

 
Old 09-23-2018, 08:52 PM
  #61  
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Originally Posted by drdonger View Post
The RS should be faster. It has more power. Not sure why people are getting upset and defensive. Forum members wanted some clarity on weight and options. Fuel, passengers and brakes all make a difference in power to weight ratio. Now that it has been clearned up we can clearly see the RS is faster. I still think a manual with pccb’s will be closer to the RS than a PDK car with steels. Simple power to weight ratio. I posted a video of one that tied a Turbo S from a roll.

I would love to see a .1 GT3RS, .2 GT3 PDK, .2 GT3 6spd and .2 RS roll race.
Agree 100%. I think a lot of us are pretty analytical, so looking at the video only painted part of the picture. To validate the findings we were looking to clarify other variables just to make sure what we were seeing was in fact apples to apples. I am pretty comfortable that the video does in fact show that a .2 RS is quicker by a good margin. That ring time difference wasn’t just tires.

Also, sine the engines are similar, we now know where the next GT3 will get its power bump, assuming the 992 stays NA. Plenty left in the tank.
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Old 09-23-2018, 10:19 PM
  #62  
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Originally Posted by Taffy66 View Post
But wouldn't this be offset by the PDK having an extra ratio and a 4.5% lower final drive ratio..This means the PDK has 4.5% lower gearing in the lower four gears and even lower in the higher gears.Lower gearing is a torque multiplier..
It definitely helps for a standing start, but for a roll race it depends on the starting and finishing speeds to know how much gearing is affecting the performance.
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Old 09-23-2018, 10:43 PM
  #63  
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btw, one thing I love about the video that I just noticed is the "RS" logo from the sunlight shining through the top of the rear glass. that's a great little easter egg they put in this car
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Old 09-24-2018, 01:06 AM
  #64  
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Lmao

Originally Posted by sgroer View Post
I don't know if this is a helpful datapoint in this discussion or not, but here is my GT2RS vs a 2010 Honda Odyssey Ex. The driver is a friend of mine and was inexperienced with both racing odysseys and launching a GT2RS. I think he got nervous and missed the first shift - he wasn't used to how quickly it hit redline but GT2RS still eeked out the win. One important note - the odyssey had steel brakes and the GT2RS has PCCB.


https://youtu.be/b0z8erabot0
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Old 09-24-2018, 10:51 AM
  #65  
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Excellent video, thanks for doing it and sharing!
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Old 09-24-2018, 11:09 AM
  #66  
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Nice Vid! Thanks for posting. I had no doubt as to the results.

Now, is that gap worth the price bump plus ADM?

Ooops, I just made this a value thread!!

Nobody reply to this. Please. LOL
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Old 09-24-2018, 11:22 AM
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Originally Posted by Palting View Post
Nice Vid! Thanks for posting. I had no doubt as to the results.

Now, is that gap worth the price bump plus ADM?

Ooops, I just made this a value thread!!

Nobody reply to this. Please. LOL
Nice job lol.
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Old 09-24-2018, 11:36 AM
  #68  
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Originally Posted by BlueGT3 View Post
Yawn
Yawn x 2
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Old 09-24-2018, 01:08 PM
  #69  
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Part two:

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Old 09-24-2018, 01:42 PM
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Originally Posted by Petevb View Post
FYI, the parasitics in the PDK are in fact noticeably higher- the wet clutches and e-diff both run from pressurized gear oil, and the associated pump and pumping loss is not present in the manual. Likely responsible manuals dynoing significantly higher.

Nice run, impressive showing from the RS. In the video it looked like you started both high in the RPM band?
In theory you're correct, but since you have no data to back up your claim (sorry if I missed it) it's nothing more than speculation. What does noticeably higher mean? 5%? 10% 25%? Is the e-diff fluid pressure always the same, or is it less in a straight line after launching? You very well may be right, I'm just not sure there is enough data to support your "significant" claim.
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Old 09-24-2018, 01:52 PM
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Originally Posted by RyanDDWPartners View Post
Part two:
Not trying to start a debate again, but just for info was this also a PDK GT3?
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Old 09-24-2018, 01:54 PM
  #72  
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Originally Posted by rsierra View Post
In theory you're correct, but since you have no data to back up your claim (sorry if I missed it) it's nothing more than speculation. What does noticeably higher mean? 5%? 10% 25%? Is the e-diff fluid pressure always the same, or is it less in a straight line after launching? You very well may be right, I'm just not sure there is enough data to support your "significant" claim.
There are multiple chassis dyno results posted and the Manual seems to show more horsepower (double-digit), due to drivetrain losses in PDK version.
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Old 09-24-2018, 01:57 PM
  #73  
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Originally Posted by GrantG View Post
Not trying to start a debate again, but just for info was this also a PDK GT3?
Yes. Same PDK GT3. I would bet money the cars weighed about the same as well. The .2RS and .2GT3 PDK cars weigh the same 3153lbs (depending). I have HRE's but I had more gas and a passenger so... The RS isn't lighter with the same options. Even the book shows 1410kg for both (1410-1557).
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Old 09-24-2018, 01:59 PM
  #74  
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Originally Posted by RyanDDWPartners View Post
Yes. Same PDK GT3. I would bet money the cars weighed about the same as well. The .2RS and .2GT3 PDK cars weigh the same 3153lbs (depending). I have HRE's but I had more gas and a passenger so... The RS isn't lighter with the same options. Even the book shows 1410kg for both (1410-1557).
Thanks. RS certainly looks stronger in those vids.

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Old 09-24-2018, 02:02 PM
  #75  
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Originally Posted by GrantG View Post
Thanks. RS certainly looks stronger in those vids.
20hp from the get go plus ram air. The ram air on the RS we know helps quite a bit so the HP gap gets larger the faster you're going and that's also why you never see a GT3 pulling on an RS even at higher speeds and even with the extra downforce.
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