Race Prep Miata race-only chat.
Sponsored by:
Sponsored by:

NASA ST5/TT5

 
Old 06-14-2019, 12:28 PM
  #141  
Junior Member
 
Join Date: May 2014
Location: Sac
Posts: 329
Total Cats: 35
Default

Was it 160 SAE corrected? Because that can change things dramatically, although likely not that much. On a 75f day my car made 141 STD correction, 136 SAE for NASA. Using STD correction on a cool day is an easy way to get inflated numbers on dynojet. Granted, from 160 down to 134 sounds like you've put that thing to use, ha.
cabowabo is offline  
Old 06-14-2019, 01:48 PM
  #142  
Junior Member
iTrader: (1)
 
Join Date: May 2012
Location: Little Elm, TX
Posts: 84
Total Cats: 5
Default

IDK, the original tune was on a mustang dyno, so if anything I was expecting to get a higher number going to a dynojet.
spencer9474 is offline  
Old 06-14-2019, 04:40 PM
  #143  
Senior Member
Thread Starter
 
Join Date: Feb 2007
Location: Columbus, OH
Posts: 1,100
Total Cats: 377
Default

The 100tw credit isn't enough to make up for the sheer pace of Hoosiers, but this is going to be my HPDE/regional setup if there aren't enough cars in class for HoHo contingency.

15x9.5 Konig Freeform with 245/40/15 RC1. Well inside the 2400lb/257mm template and fits under an NA with a roll, pull and race camber. My NB has OEM un-rolled fenders as shown, but will need a flat roll to function on a track.









For science I also mounted up a 225/45/15 Hoosier R7 on a 9.5" Freeform and a 9" 6UL. The 225 Hoosier is the most 'normally' sized Hoosier I have hands on experience with. It looks 205-on-a-9-happy on the 9.5".

doward is online now  
Old 06-14-2019, 10:42 PM
  #144  
Senior Member
iTrader: (2)
 
Join Date: Jan 2013
Location: Chandler, AZ
Posts: 1,041
Total Cats: 154
Default

Originally Posted by spencer9474 View Post
IDK, the original tune was on a mustang dyno, so if anything I was expecting to get a higher number going to a dynojet.
Mustang dyno's can easily be manipulated to read high all the time. In order for you to lose 30WHP in two years something would have to be majorly wrong. My engine has been making about the same power for years and hundreds of hours on track and has seen a nearly 9000 RPM over rev from a missed shift.
Arca_ex is offline  
Old 06-19-2019, 01:18 PM
  #145  
Elite Member
iTrader: (4)
 
Join Date: Sep 2006
Location: Charlotte, NC
Posts: 3,175
Total Cats: 39
Default

Did some ST5 "racing" this last weekend at Road Atlanta. Car counts in NASA Southeast are pretty dismal (outside of SE30 and SM) so only one other ST5 car to play with, an e36. It was mostly a test weekend and a "check the box" weekend for the three ST5 race weekends I have to do before Nationals. Which I'm registered for...

Currently the car sits at 143 whp peak, 136 average, 2400ish pounds. 9LR ****, homemade front aero, 225 R7s on 15x9s, SA Tractive dampers with 1000/400 springs, stock sways (because PTE hangover still)...so not really ST5 at all!

I have a 11:1 VVT motor with head work that should be able to make 160+ on E85 and a six speed ready to go in the car, just need time to swap them in. I'm also planning on switching to 1100/600 springs and real sway bars as the car is way too rolly polly now, especially with the aero.

Won on Saturday, broke a balljoint on Sunday (?). Didn't go especially fast. Should have been in the 1:40s but never got out of the 1:42s which is what the TTE record is. It was pretty hot in the afternoons though and vmax down the back straight was down 3-4 mph compared to last year in TTE with cooler temps. An extra 25hp should help?






Efini~FC3S is offline  
Old 06-19-2019, 01:35 PM
  #146  
Elite Member
iTrader: (4)
 
Join Date: Sep 2006
Location: Charlotte, NC
Posts: 3,175
Total Cats: 39
Default

Who does this?

Not ELBJs afaik...




Last edited by Efini~FC3S; 06-19-2019 at 01:36 PM. Reason: Text was lost...
Efini~FC3S is offline  
Old 06-20-2019, 03:20 AM
  #147  
Senior Member
iTrader: (2)
 
Join Date: Jan 2013
Location: Chandler, AZ
Posts: 1,041
Total Cats: 154
Default

Originally Posted by Efini~FC3S View Post
Car counts in NASA Southeast are pretty dismal (outside of SE30 and SM) so only one other ST5 car to play with

I feel like this is a common theme for a lot of the NASA regions... I've been trying to push some people towards ST5 locally but it's hard to convince people when I'm not able to be out there running yet either.

Spec Miata just blew up in our region which put a huge damper on the effort to get ST car counts up. Before last year nobody ran SM out here in AZ now they have like 5 to 10 car fields. Then there is a decent amount of Spec 944, and then a handful in GTS and then some in ST2 and ST3 and that's about it.

Get all those bugs worked out and get the 11:1 VVT in there and you'll be at the front easy, just need to pull more people into the class.
Arca_ex is offline  
Old 06-20-2019, 10:59 AM
  #148  
Elite Member
iTrader: (7)
 
Join Date: Jan 2008
Location: Knoxville, TN
Posts: 2,456
Total Cats: 176
Default

I was at Road Atlanta as well, but in TT5.




It took me many sessions to figure out the new 6spd + MR tall/angled shifter. Data says I suck and I never carried speed into and through the corners like I normally do. So my times were pretty meh.

Similar to Luke, I'm running my TTE build "on steroids" :
2320lbs
130rwhp avg / 135rwhp peak
DiY front aero
9LR 65" swan-neck big ****
205 R7s on 15x8 6uls
800/500 Xidas 1.125"f /14mm r




Slow lap, but man this gearing is WAY better. As I mentioned, there's a slight learning curve on the shifter.






RE: ST5 car counts.

I think I'm going with TT5 for most events and my w2w events will be concentrated on GLTC. This means I need more power..... like 30-35 more hp. Maybe an occasional ST5 event if we get enough people together to have some fun. I'll only be doing 2-3 w2w events a year anyways.

Last edited by flier129; 06-20-2019 at 11:11 AM.
flier129 is offline  
 


Thread Tools
Search this Thread

Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.