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NASA PTD Race Car Dyno Results

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Old 02-20-2013, 08:29 PM
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The MAF housing diameter is the same as stock.
Old 02-21-2013, 11:24 AM
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this is a good thread!

Originally Posted by olddragger
Can the rx8 really complete in TTC?
i think it might in our region, we've got a lot of sunday drivers our PTE people run around the same times as the PTC...

I found that the 275's actually slowed me down a little. 245's-255's ( hoosiers only?) seem to be the best size for my car. I guess each one can be a little different.
IMo, i think the simple start is to do PTD/TTD, and run the 225 hoosier, you take 10 points for the hoosier, but -4 for the 225. the Hoosiers run wide... vs running like a 245 hanook, which is 7 points...

Originally Posted by Arca_ex
Most of the guys here are lightweight with good power to weight ratios and minimal modifications and smaller tires, I'll be in a heavier car with big tires and lots of aero. Also there's only a couple high horsepower tracks in our region so we'll see how that goes.
i think the easy way is to run a pretty basic car in PTD, suspension, 225 hoosiers, and the free stuff that applies. adding hp seems to be the hard part, so going up a class might not be the way to go? although this is off the top
Old 02-21-2013, 02:48 PM
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This combo worked GREAT for me in PTD a couple years back:

1) Ohlins Shocks - 3 points
2) Race Springs - 2 points
3) Cat Delete - 1 point
4) Muffler Delete - 2 points
5) 255 Hoosier R6 - 11 points

Total: 19 points
Old 02-21-2013, 07:48 PM
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Originally Posted by etzilon
I like this thread. Perhaps, we should have a NASA PT/TT thread (a-la STX thread)
Sounds like a good idea to me. I can start one when I get home I guess.

Originally Posted by j9fd3s
i think the easy way is to run a pretty basic car in PTD, suspension, 225 hoosiers, and the free stuff that applies. adding hp seems to be the hard part, so going up a class might not be the way to go? although this is off the top
I'm not running in TT-D. I'll be in TT-C so I have points to play around with aero and then the next step will be motor swap for significantly more power, either N/A 20b or 13b-REW single turbo. It's a stepping stone for me.

Besides, there's a supercharged Miata here that runs in TT-D and cleans house, his times are about a second faster than the TT-C times so being in TT-C means I can have a faster car and run against slower times anyways lol.
Old 02-22-2013, 12:44 PM
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Originally Posted by Arca_ex

I'm not running in TT-D. I'll be in TT-C so I have points to play around with aero and then the next step will be motor swap for significantly more power, either N/A 20b or 13b-REW single turbo. It's a stepping stone for me.

Besides, there's a supercharged Miata here that runs in TT-D and cleans house, his times are about a second faster than the TT-C times so being in TT-C means I can have a faster car and run against slower times anyways lol.
cool, our region is like that too, PTE/TTE is really competitive, so they run closer to PTC/TTC times
Old 02-28-2013, 12:16 AM
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Hi i have a question, i just signed up to nasa last year in november i drove my rx8 in HPDE 1 at Summit Point Raceway after the race like a week after i decided to dyno the car to see how much power it was making stock, the numbers were 157, 159, and 156hp to the wheels is this normal a normal amount of horsepower for a 96k miles RX8?
Old 02-28-2013, 08:52 AM
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thats a little low on the dyno.

If i could get into TTC with my 315 rwhp that would be good.
But I have a problem. My power doesnt have a peak. Even at 9K it is still gaining hp. I dont want to rev the engine that high and at the redline I want to use, 8.2K, I am making less hp. So my classification has to be done on the power that i will not use. I understand that--but it is somewhat of a handicap.
So if anyone is planning to fi this engine and wanting to run TT --be aware of this possibility.
Old 02-28-2013, 08:57 AM
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Originally Posted by olddragger
So if anyone is planning to fi this engine and wanting to run TT - run a turbo not a SC.
Fixed
Old 02-28-2013, 09:04 AM
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Lol---
I wish we could track together man--that would be a bucket list event!
Old 03-02-2013, 11:38 AM
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So if my horspower is low those that mean that my compression is low?

Also I will be attending a HPDE session at Limerock Park on March 30th and I was wondering if its ok to use Premix on the on my car since I will be running the car hard, I have bottle of Protek from Pettit Racing.

Thanks for helping me with this question and for any advice...
Old 03-02-2013, 11:41 AM
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I use Idemitsu premix. I can't prove it with data but I think it helps.
Old 03-02-2013, 03:13 PM
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Originally Posted by etzilon
I use Idemitsu premix. I can't prove it with data but I think it helps.
I want to use the Protek because they have a actuall video of the product vs the idemitsu and other premix and proteck actually burns better...look it up on YouTube when you get the chance and tell me what you think about it...
Old 04-10-2013, 11:02 AM
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Best of 4 pulls. 180.36 HP & 130.46 TQ

Signature has the mods

Re-classed by Greg to 3090# TTE** base tire side 235

Points
Tires 8
Suspension 7
Aero 10 ( damn body kit)

25 + 14 = 39

Final class TTD

I will post a vid of the dyno session when it is available
Old 04-10-2013, 11:12 AM
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Originally Posted by godshand86
I want to use the Protek because they have a actuall video of the product vs the idemitsu and other premix and proteck actually burns better...look it up on YouTube when you get the chance and tell me what you think about it...
You really think that test is scientific and equates to what is going on in the engine? come on man,
Old 04-10-2013, 07:46 PM
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Originally Posted by darnellm
Best of 4 pulls. 180.36 HP & 130.46 TQ

But isn't your dyno reclass for 204 hp?
Old 04-11-2013, 12:23 PM
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Originally Posted by MagnusRacing
But isn't your dyno reclass for 204 hp?
Yes that is correct.
Greg re-classed me based on my estimate HP of 180 HP
Not sure why I was given such a large buffer
My goal was to run in TTD and that is the outcome so I am a happy camper
Old 04-11-2013, 11:13 PM
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Originally Posted by darnellm
Yes that is correct.
Greg re-classed me based on my estimate HP of 180 HP
Not sure why I was given such a large buffer
My goal was to run in TTD and that is the outcome so I am a happy camper
Yeah... you should ask him to reclass you for like maybe 190rwhp or something. Maybe even less. How close are you to your minimum weight? If you're light ask for a lower weight but the same classing. If you're heavy ask for a lower classing like PTE or something.
Old 04-12-2013, 08:51 AM
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I'm with Mangus - if it was me I'd send in that whp + a little buffer, your current base class, and get a new lower min weight.
Old 04-12-2013, 12:50 PM
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Originally Posted by kbrewmr2
I'm with Mangus - if it was me I'd send in that whp + a little buffer, your current base class, and get a new lower min weight.
Really guys
I am 100 lbs over my min wt
and 24 HP under my max HP
I will if you think I should

I am just glad to be out of TTC where the
M3s weigh less than 3000# and put out 250 HP
Old 04-12-2013, 01:28 PM
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Originally Posted by kbrewmr2
I'm with Mangus - if it was me I'd send in that whp + a little buffer, your current base class, and get a new lower min weight.
Really guys
I am 100 lbs over my min wt
and 24 HP under my max HP
I will if you think I should

I am just glad to be out of TTC where the
M3s weigh less than 3000# and put out 250 HP
Old 04-12-2013, 03:48 PM
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Might as well. At your weight and power limits Greg would probably make you TTE* or TTE** if you request.
Old 04-15-2013, 01:25 PM
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if you want to stick with that power and with that weight, then go down on your base class. No sense leaving 100lbs & 25hp on the table needlessly.
Old 06-18-2013, 04:29 PM
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The best mid for an RX8 PT/TT using a points based system is to plan for the MSpeed 5.12 ring and pin. It will take your avail power and make it waaaay more useful. Period.
Old 06-18-2013, 04:32 PM
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The best mod for an nasa RX8 PT/TT using a points based system is to plan for the MSpeed 5.12 ring and pin. It will take your avail power and make it waaaay more useful. Period. No more bog dog 3 rd gear low rpm or dog slow 5th gear acceleration. It is a near perfect gear ratio that gives u many choices including not using 2nd gear and needing to use 6th at many of the road courses in the US. Best mod out there
Old 06-25-2013, 10:52 PM
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Originally Posted by darnellm
Best of 4 pulls. 180.36 HP & 130.46 TQ

Signature has the mods

Re-classed by Greg to 3090# TTE** base tire side 235

Points
Tires 8
Suspension 7
Aero 10 ( damn body kit)

25 + 14 = 39

Final class TTD

I will post a vid of the dyno session when it is available

I think this sort of answers my question, but anyway:

I am looking into running NASA TT next year but I don't want to lighten/gut the car. I imagine the 'race weight' of the car with me is 3250-3300. Power should be around stock, ~185RWHP. Will using these numbers allow me to go down to TTE and add points from there? Alternatively, can I class in TTD with FI while using the additional 200-250lb min competition weight? Does classification with FI take into account the shape of the curve or only the peak value (I read it this way, but everything is up to the discretion of the organizers)?

Thanks,
Chris


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