Nasa TT/TD disccussions

[ka-t_240]

Hi Everyone, quick question as I am getting ready for my first event with NASA. Still trying to figure out the points thing. Have been seeing many different "views" when it comes to OEM Spoilers.

I have a BRZ Limited, which comes with the spoiler from the factory). Does this mean the spoiler is BTM, or since the BRZ Premium model does not have a spoiler, does that mean my limited automatically takes the +4 for the OEM Spoiler.

[ja1217]

Originally Posted by ka-t_240

Hi Everyone, quick question as I am getting ready for my first event with NASA. Still trying to figure out the points thing. Have been seeing many different "views" when it comes to OEM Spoilers.

I have a BRZ Limited, which comes with the spoiler from the factory). Does this mean the spoiler is BTM, or since the BRZ Premium model does not have a spoiler, does that mean my limited automatically takes the +4 for the OEM Spoiler.

Some people think that BTM means "By The Manufacturer", but it really means "Base Trim Model". So, since the spoiler is not included on the Base Trim Model BRZ, you would indeed need to take the 4 pts for non-BTM aero.

[ka-t_240]

Originally Posted by ja1217

Some people think that BTM means "By The Manufacturer", but it really means "Base Trim Model". So, since the spoiler is not included on the Base Trim Model BRZ, you would indeed need to take the 4 pts for non-BTM aero.

My undertanding was getting hit with 4 points for it. I understood BTM, but had been seeing lots of posts in regards to BTM being linked to the specific model vs the car: Limited vs Premium, SE vs none SE, and all sorts of comparisons.


I am at that point where I will end up running TTC because I don't want to deal with pulling body parts off my car for a couple events per year, so wanting to make sure that everything is 100% before ordering stickers.

[ja1217]

Yes, you would take 4 points for the spoiler. BTM is always linked to the base trim model with no options (so premium for the BRZ, which does not come with a spoiler). I think there are a few special cases with other cars with major upgrade packages, like the Mustang Boss302, where they are classed separately from the base mustang, but for our cars there is no special classing of for the different trim levels.

[Uplink]

Originally Posted by ka-t_240

My undertanding was getting hit with 4 points for it. I understood BTM, but had been seeing lots of posts in regards to BTM being linked to the specific model vs the car: Limited vs Premium, SE vs none SE, and all sorts of comparisons.


I am at that point where I will end up running TTC because I don't want to deal with pulling body parts off my car for a couple events per year, so wanting to make sure that everything is 100% before ordering stickers.

Where did you find the base class for our cars? The classifier spreadsheet doesn't list that and the 'base class' field is only a dropdown, not referenced from anywhere else.


*EDIT* Nevermind, found it in the rules. Thought it was in their 'classifier program' like they said on the website.

[ka-t_240]

Originally Posted by Uplink

Where did you find the base class for our cars? The classifier spreadsheet doesn't list that and the 'base class' field is only a dropdown, not referenced from anywhere else.


*EDIT* Nevermind, found it in the rules. Thought it was in their 'classifier program' like they said on the website.

Ya, they are in TTD. Its in the normal TT Rule Book. Then you can play with the fancy spreadsheet and be all like to TTC you go!

[Uplink]

Originally Posted by ka-t_240

Ya, they are in TTD. Its in the normal TT Rule Book.

Your best bet is probably TTC, it'll give you plenty of wiggle room too. With 0 suspension mods, on 200tw Direzza's and just due to my minor street mods (OP-Back exhaust, pulleys, slightly less weight)... I fall about 3 points from TTC.


That said, the car is already competitive with TTC times so putting the extra 23 allowable points into suspension/tires would make it a formidable competitor.

[ka-t_240]

Originally Posted by Uplink

Your best bet is probably TTC, it'll give you plenty of wiggle room too. With 0 suspension mods, on 200tw Direzza's and just due to my minor street mods (OP-Back exhaust, pulleys, slightly less weight)... I fall about 3 points from TTC.


That said, the car is already competitive with TTC times so putting the extra 23 allowable points into suspension/tires would make it a formidable competitor.

Are the pulley's really worth the points? I've already got T2s, Sway Bars, Bushings, Endlinks, Full exhaust/tune, 4.56 FD, and RE71s. And then some useless OEM Wing Points as well as an intake(not sure what to say about it) and front strut bar.



Not sure if the brz can compete with an S2k w/ aero.

[Uplink]

Originally Posted by ka-t_240

Then you can play with the fancy spreadsheet and be all like to TTC you go!

Came to that conclusion about 30 seconds in.

[Uplink]

Originally Posted by ka-t_240

Are the pulley's really worth the points? I've already got T2s, Sway Bars, Bushings, Endlinks, Full exhaust/tune, 4.56 FD, and RE71s. And then some useless OEM Wing Points as well as an intake(not sure what to say about it) and front strut bar.



Ya, not sure if the brz can compete with an S2k w/ aero.

They aren't worth the points, that's the problem. I never built anything to TT spec (or really any spec for that matter) so backtracking to add up points shows how silly a lot of it is. I'm in the same boat as you on the intake. Perrin silicone inlet to get rid of the noise tube and the HKS snorkel. Neither make any appreciable competitive difference, but they fall into the category that includes doing a true cold air intake because non-BTM.


No, definitely not. @Aero It's all in how you build the car though. Ideally, the best way to hedge your is you have to pick only 1 race series and build/spec your car to their rules eeking out every points advantage you can. Don't do anything extra or 'wasteful'. Ie, rather than Z2's, pulleys, and the snorkel, those points would have been better spent knocking a set of R888's or RE71's down to +2.

[enivid]

TT4 is a go! http://nasaforums.com/viewtopic.php?f=18&t=132031

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[CSG Mike]

Originally Posted by enivid

TT4 is a go! http://nasaforums.com/viewtopic.php?f=18&t=132031

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woooooooooh

Can you give me a quick TL;DR vs TTC/TTD? I'll read the full post later when I'm at a computer...

[ja1217]

Originally Posted by CSG Mike

woooooooooh

Can you give me a quick TL;DR vs TTC/TTD? I'll read the full post later when I'm at a computer...

If you are familiar with the rules for TT3, its pretty much the same except the power to weight ratio is 12.0lbs:1whp, with the power being your average horsepower, not peak.

BUT, here is what I'm 95% certain we are going with for 2017, and I hope that we will have the rest before the end of the month
1) ALL ST (1-4) and TT1-4 classes will use the Avg. HP calculation for Dyno tech inspections for compliance with the Adjusted Wt/HP Ratio.
2) ST4/TT4 will use the current ST Adjusted Wt/HP Ratio Formula with some modifications to the Mod Factors (like we did with ST3/TT3)
3) ST4/TT4 will have a limit of 12:1 Adjusted Wt/HP Ratio
4) ST4/TT4 will have a maximum Tire Size of 275
5) Non-DOT tires will not be permitted in ST4/TT4 (might need some exceptions for designated rain events--still being worked out)
6) DOT-approved "A" Tires will have a Modification Factor in ST4/TT4--similar to the current non-DOT Mod Factor in other ST classes.
7) No non-Production Vehicles or Modification Factor for ST4/TT4, except for pre-approved vehicles (such as Legends, Legacy's, etc.) that shall be listed in the rules. There may be some individual waivers granted by the National Director under appropriate circumstances for currently unforeseen circumstances (with appropriate Mod Factor if necessary).
8) PTB/TTB will be deleted and no longer available.
9) Aero modifications will be limited to a rear wing/spoiler, front air dam/splitter, and those modifications currently listed as okay under the OEM Aero rule in ST3.

I'm still waiting on a clarification on the aero rule as I don't want to remove my diffuser, but we'll see.

[zdr93523]

Originally Posted by enivid

TT4 is a go! http://nasaforums.com/viewtopic.php?f=18&t=132031

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Time to go back to NA