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PostPosted: Thu Jan 01, 2015 6:24 am 
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Greg G. wrote:
2015 PT Rules are posted on the NASA website.


22) Modification, porting, or replacement of the BMT exhaust manifold or header(s) (includes
any/all other exhaust and catalytic converter modifications) +5
23) Any modification to the BTM exhaust piping and/or catalytic converter (includes muffler
modification or replacement) +3
24) Non-BTM or modified resonator(s) or muffler(s) only (no exhaust piping modifications) +1


Am I understanding the new exhaust rule changes correctly in that a car with a full exhaust system will have to take at least 8 points instead of the previous 5? If so, that really hurt my plans for the year (assuming the TT rules will have the same changes) and I imagine many others.

----EDIT----
I'm an idiot and missed the important section in the parentheses on my first couple read throughs about it including any/all other exhaust and cat modifications.


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PostPosted: Sun Jan 04, 2015 8:05 am 
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22) only for full exhaust including headers +5.

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PostPosted: Sun Jan 04, 2015 6:18 pm 
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Greg G. wrote:
22) only for full exhaust including headers +5.


Is another way to look at this, as Headers are now only 1 point? Assuming most have removed cats' and changed their catback?

Thanks,
Dave

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PostPosted: Mon Jan 05, 2015 4:25 am 
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The way I read it, 22) "modification, porting, or replacement of the exhaust manifold or headers" is +5. Not so sure this was intended this way but it looks like headers alone cost 3 more points than in the past?

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PostPosted: Mon Jan 05, 2015 9:13 am 
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yes but you get the rest of the exhaust for free now

the way the clarifications / definitions changed it became increasingly difficult to do just "one" of the exhaust points mods without incuring some or all of the others. This further clarifies and actually simplifies it.

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PostPosted: Mon Jan 05, 2015 10:32 am 
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Can someone school a n00b here? I'm curious why there are more points assigned to the BFGs than there are to equivalent Hoosiers. My experience has been that the R6 is faster- although shorter lived- than the R1, and the A6 was faster than the R1-S. However, it seems that the BFG stuff is given more points.
Are my experiences different than others, or is there some part of the picture I'm not seeing with how points are determined?


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PostPosted: Mon Jan 05, 2015 10:37 am 
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Matt93SE wrote:
Can someone school a n00b here? I'm curious why there are more points assigned to the BFGs than there are to equivalent Hoosiers. My experience has been that the R6 is faster- although shorter lived- than the R1, and the A6 was faster than the R1-S. However, it seems that the BFG stuff is given more points.
Are my experiences different than others, or is there some part of the picture I'm not seeing with how points are determined?

A. TIRES:
1) The following DOT-approved R-compound tires: BFG R1S, Goodyear Eagle RS AC (auto-
cross), Hoosier A7, Hankook Z214 (C90 & C91 compounds only), Hoosier Wet DOT (if
used in dry conditions—see section 5.6) +22
2) The following DOT-approved R-compound tires: Hoosier A6 +17
3) The following DOT-approved R-compound tires and those with a UTQG treadwear rating of
40 or less not listed otherwise in these rules: BFG R1, Goodyear Eagle RS, Hankook Z214
(C71, C70, C51, C50), Hoosier R7, Kumho V710 +10
4) The following DOT-approved R-compound tires: Hoosier SM7 +9
5) The following DOT-approved R-compound tires: Hoosier R6, Hoosier SM6 (note:
Continental Tire Sportscar Challenge EC-Dry tires (225, 245, 275) OK) +8


Where is it that the Hoosiers cost *less* points? R7 and R1S are both +22. R1 and R7 are both +10. NASA has deemed that the newest Hoosiers are on par with the BFG. The R6 and A6 are being phased out AFAIK.

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PostPosted: Mon Jan 05, 2015 11:06 am 
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ILIKETODRIVE wrote:
Matt93SE wrote:
Can someone school a n00b here? I'm curious why there are more points assigned to the BFGs than there are to equivalent Hoosiers. My experience has been that the R6 is faster- although shorter lived- than the R1, and the A6 was faster than the R1-S. However, it seems that the BFG stuff is given more points.
Are my experiences different than others, or is there some part of the picture I'm not seeing with how points are determined?

A. TIRES:
1) The following DOT-approved R-compound tires: BFG R1S, Goodyear Eagle RS AC (auto-
cross), Hoosier A7, Hankook Z214 (C90 & C91 compounds only), Hoosier Wet DOT (if
used in dry conditions—see section 5.6) +22
2) The following DOT-approved R-compound tires: Hoosier A6 +17
3) The following DOT-approved R-compound tires and those with a UTQG treadwear rating of
40 or less not listed otherwise in these rules: BFG R1, Goodyear Eagle RS, Hankook Z214
(C71, C70, C51, C50), Hoosier R7, Kumho V710 +10
4) The following DOT-approved R-compound tires: Hoosier SM7 +9
5) The following DOT-approved R-compound tires: Hoosier R6, Hoosier SM6 (note:
Continental Tire Sportscar Challenge EC-Dry tires (225, 245, 275) OK) +8


It looks like Matt is comparing the BFG's to the "6's" that are getting phased out, instead of to the "7's" that are actually the tire to compare to now.

Where is it that the Hoosiers cost *less* points? R7 and R1S are both +22. R1 and R7 are both +10. NASA has deemed that the newest Hoosiers are on par with the BFG. The R6 and A6 are being phased out AFAIK.

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greg@nasa-tt.com


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PostPosted: Wed Jan 07, 2015 2:00 pm 
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Can someone link the new rules if they are indeed available? Everything thing I'm finding is still from last year. Thanks.

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PostPosted: Wed Jan 07, 2015 2:26 pm 
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https://nasaproracing.com/rules

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