Discussion: ST2 vs PTA vs...
#31
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Ive thought about E85 since i took the step to start racing. I havent taken the time to investigate, but the one obstacle i would need to figure out is how much E85 i would need to finish a 45min race. And from what ive seen thus far, the OEM tank is too small. If i have the money and time, that would be something id like to try someday. And that obviously means id need a fuel cell. But the other obstacle would be to figure out how to transport enough E85 every time i go race. Whatever it is, id imagine that id need a lot of E85.
Even though they weren't going anywhere, I put straps across the top so people would shut up about how they were going to "flip out the top."
* Thus far there have been a good 2 test/tune days right before Nationals. And theres probably 1-2 other warmup sessions other than what ive listed. Furthermore, some racers supersize by competing in TT also.
I've never looked at any schedules from Nationals, but how hectic would it be to supersize and do TT as well?
Interesting reading all this. I am about to start my second full year of HPDE's and hope to possibly try some TT competition in 2012. I have studied the goings on in the TTA and TTS ranks here in NASA-SE. Nunally and Perkins pretty much dominate NASA-SE TTA in their Vettes. One place they really are nearly untouchable is Road Atlanta which plays very well to the Vette's best qualitites.
Because of some stuff I did early on with my Evo, I would have to spend $$$ to get it properly set up for TTA. Like my transmission. Before I ever started this HPDE madness I had my tranny rebuilt due to poor shifting issues. While it was out I had the Evo 8 3-4-5 gears installed. Now that is 3 points that really gets me nothing. I have a JDM rear bumper which will get me dinged on rear diffuser points. So to make my IX a smart TTA machine (Like Nate's) I am looking at $$ to de-mod.
But, if you look at TTS in NASA-SE, it is usually a slower field than TTA. At RA in Dec a 1'36 got second place in TTS but wouldn't make top 3 in TTA. I think there are probably more people in TTS running cars that have not been built from the get-go at a TTA spec car but still want to go out and give it a try.
That said, I'll probably give TTS a try to start with next year.
I am highly debating looking for a well-used Evo 8 in a couple of years, stripping it down and building a purpose built TTB machine. Since the 8 starts as TTC* (iirc) I think it could be turned into a top flight TTB machine.
I am highly debating looking for a well-used Evo 8 in a couple of years, stripping it down and building a purpose built TTB machine. Since the 8 starts as TTC* (iirc) I think it could be turned into a top flight TTB machine.
#32
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3480 post race for Marty I think; in the neighborhood of 330whp roughly.
Yeah, he's very limited and nothing is apples-to-apples but I was just trying to give a reference point. Marty has run < 2:10's at VIR and in my first trip there in TTB spec I ran 2:11's in 103 degree heat.
Bump/Steer kit (2pts):
http://www.amsperformance.com/cart/w...it-KCA388.html
You could do it. I've got a 4pt rollbar (60lbs I think) and I weighed 3190 at my last event after a TT session - so that's with low fuel and driver. I've still got ALL stock glass, 100% of my door guts, stock headlights, etc. And that's before you think about CF doors or roof. Might not be cheap; but it's been done.
Yeah, he's very limited and nothing is apples-to-apples but I was just trying to give a reference point. Marty has run < 2:10's at VIR and in my first trip there in TTB spec I ran 2:11's in 103 degree heat.
Bump/Steer kit (2pts):
http://www.amsperformance.com/cart/w...it-KCA388.html
You could do it. I've got a 4pt rollbar (60lbs I think) and I weighed 3190 at my last event after a TT session - so that's with low fuel and driver. I've still got ALL stock glass, 100% of my door guts, stock headlights, etc. And that's before you think about CF doors or roof. Might not be cheap; but it's been done.
Ah, but what about your control arms when they're pointing to the sky when you lower the front?
Very doable then. I think that's the setup to have. Lol why am I still building an STi.
#33
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For e85 it'll depend on the course and what percent of the lap your at 100% throttle. For a track like Roebling Road, 2.something mile, I use about 1/4 tank of e85 for 25 mins so figure 1/2 tank or roughly 7.5 gallons for 45mins. For tracks like Sebring or Homestead with numerous straights, I use just over 3/4 of a tank in a session going 9/10's or above, so figure 9-10 gallons for 25 mins, 35 mins you'd be ok as some have done it already but you better have a surge tank. 45mins, not going to happen unless your surge tank is around 2-5 gallons. This is part of what i've been debating. Due to the semi-unlimited status of ST2/TTS, I've been thinking of running a 4-12 gallon "well cell" or a 2-4 gallon custom surge tank to get me those few extra miles. Granted a full fuel cell would be ideal, esp 20-25 gallons, but your looking at every bit of $3000+ wholesale, to do it right. But in doing so, you'd also take advantage of removing all that thick *** steel in the rear of the car if you set it up like TA-X right over the rear axel. Also a cell'd car would have greater resell value since most of these other series require it.
I like your trailer setup for fuel, I had a truck toolbox there until recently, it's a little foobar since last I dropped the trailer off at night, took a taillight and some paint with it, didn't even feel or hear it lol. Right now i'm taking 5-5 gallon jugs with me, i'd have to increase this to 9+ to do a supersize or nationals. Drums would be sweet. 110 gallons I think would be just enough, figure 30-40 gallons per day. One day these tracks may wakeup and sell e85, but I doubt it unless Sonoco starts selling it.
I like your trailer setup for fuel, I had a truck toolbox there until recently, it's a little foobar since last I dropped the trailer off at night, took a taillight and some paint with it, didn't even feel or hear it lol. Right now i'm taking 5-5 gallon jugs with me, i'd have to increase this to 9+ to do a supersize or nationals. Drums would be sweet. 110 gallons I think would be just enough, figure 30-40 gallons per day. One day these tracks may wakeup and sell e85, but I doubt it unless Sonoco starts selling it.
Last edited by Balrok; Jan 27, 2011 at 07:50 AM.
#34
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Interesting, that's only 0.005 off from the power/weight I was running this year. I figured it would be a lot worse with that much weight. What brand/model/size tires does he run in T2? Could say T2 translates over to TTA better than TTS/ST-2.
Ah, but what about your control arms when they're pointing to the sky when you lower the front?
Very doable then. I think that's the setup to have. Lol why am I still building an STi.
Ah, but what about your control arms when they're pointing to the sky when you lower the front?
Very doable then. I think that's the setup to have. Lol why am I still building an STi.
Marty's SCCA T2 car is basically a full weight caged street car, tuned on 100oct, running JRZ's and Hoosiers. That's the SCCA T1/T2/T3 type of rules as I understand them.
They keep changing the Evo rules between 8-9" rims, 245-275 tires, swaybars and spring rates. Imagine that huge PITA of a ruleset!
In case you missed it (re: classing), this was based more on power/weight ratio's as every series has their unique rulesets that severly cloud things up:
Last edited by boomn29; Jan 27, 2011 at 08:27 AM.
#35
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I never thought about how many different sessions there are at Nationals. How long are the qualifying races? I'll need to do some recalculating myself. My barrels may not be enough!
I've never looked at any schedules from Nationals, but how hectic would it be to supersize and do TT as well?
I've never looked at any schedules from Nationals, but how hectic would it be to supersize and do TT as well?
- 2010 National Championship Schedule
For e85 it'll depend on the course and what percent of the lap your at 100% throttle. For a track like Roebling Road, 2.something mile, I use about 1/4 tank of e85 for 25 mins so figure 1/2 tank or roughly 7.5 gallons for 45mins. For tracks like Sebring or Homestead with numerous straights, I use just over 3/4 of a tank in a session going 9/10's or above, so figure 9-10 gallons for 25 mins, 35 mins you'd be ok as some have done it already but you better have a surge tank. 45mins, not going to happen unless your surge tank is around 2-5 gallons. This is part of what i've been debating. Due to the semi-unlimited status of ST2/TTS, I've been thinking of running a 4-12 gallon "well cell" or a 2-4 gallon custom surge tank to get me those few extra miles. Granted a full fuel cell would be ideal, esp 20-25 gallons, but your looking at every bit of $3000+ wholesale, to do it right. But in doing so, you'd also take advantage of removing all that thick *** steel in the rear of the car if you set it up like TA-X right over the rear axel. Also a cell'd car would have greater resell value since most of these other series require it.
I like your trailer setup for fuel, I had a truck toolbox there until recently, it's a little foobar since last I dropped the trailer off at night, took a taillight and some paint with it, didn't even feel or hear it lol. Right now i'm taking 5-5 gallon jugs with me, i'd have to increase this to 9+ to do a supersize or nationals. Drums would be sweet. 110 gallons I think would be just enough, figure 30-40 gallons per day. One day these tracks may wakeup and sell e85, but I doubt it unless Sonoco starts selling it.
I like your trailer setup for fuel, I had a truck toolbox there until recently, it's a little foobar since last I dropped the trailer off at night, took a taillight and some paint with it, didn't even feel or hear it lol. Right now i'm taking 5-5 gallon jugs with me, i'd have to increase this to 9+ to do a supersize or nationals. Drums would be sweet. 110 gallons I think would be just enough, figure 30-40 gallons per day. One day these tracks may wakeup and sell e85, but I doubt it unless Sonoco starts selling it.
Last edited by Bueller; Jan 27, 2011 at 09:14 AM.
#36
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.... However, even if the track carries the fuel you run, its in your best interest to bring some of your own because you never know. Here is one major example of what has gone wrong. At Nationals this past year, something went wrong with the system that operates the pumps at MMP. The pumps were non-operational, iirc, for about 1-2hrs. It may have been more though. That was not a fun situation.
E85 varies so much from station to station and state to state. That's really the main reason holding myself and a lot of others back I think. That variance can be remedied by bringing your own; ya just have to figure out a safe way to haul it all like it was mentioned.
Nearly all tracks have 100oct or 104oct unleaded - some I don't like the looks/condition of the tank as their above ground and pretty old looking. Personal preference...
#37
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That's why my isn't lowered much - I don't run any fancy suspension bits. I think a few years back when I ran a lower ride height that was an issue with severe understeer that I had - I've since dumped that suspension (hated it).
Marty's SCCA T2 car is basically a full weight caged street car, tuned on 100oct, running JRZ's and Hoosiers. That's the SCCA T1/T2/T3 type of rules as I understand them.
They keep changing the Evo rules between 8-9" rims, 245-275 tires, swaybars and spring rates. Imagine that huge PITA of a ruleset!
In case you missed it (re: classing), this was based more on power/weight ratio's as every series has their unique rulesets that severly cloud things up:
Marty's SCCA T2 car is basically a full weight caged street car, tuned on 100oct, running JRZ's and Hoosiers. That's the SCCA T1/T2/T3 type of rules as I understand them.
They keep changing the Evo rules between 8-9" rims, 245-275 tires, swaybars and spring rates. Imagine that huge PITA of a ruleset!
In case you missed it (re: classing), this was based more on power/weight ratio's as every series has their unique rulesets that severly cloud things up:
Doesn't sound tooo bad, since those changes are pretty easy to make. Although it would certainly get annoying if they kept going back and forth.
In Marty's case for T2, he's at a power/weight that's TTB/PTB legal so I'm not sure what you're getting at.
How does it work for TT? I see there are 4 days of sessions. Is it your fastest time overall or for each day?
#38
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What suspension was it? Can you PM me if you don't want to say on here. I have a friend looking into building his Evo for autox/track duty.
Doesn't sound tooo bad, since those changes are pretty easy to make. Although it would certainly get annoying if they kept going back and forth.
In Marty's case for T2, he's at a power/weight that's TTB/PTB legal so I'm not sure what you're getting at.
How does it work for TT? I see there are 4 days of sessions. Is it your fastest time overall or for each day?
Doesn't sound tooo bad, since those changes are pretty easy to make. Although it would certainly get annoying if they kept going back and forth.
In Marty's case for T2, he's at a power/weight that's TTB/PTB legal so I'm not sure what you're getting at.
How does it work for TT? I see there are 4 days of sessions. Is it your fastest time overall or for each day?
For Marty (SCCA T2) - think of how annoying banning all your 9" rims when you just bought 3 sets! Or all your 275 tires when you've already invested $1200/set.
Right now, it's the single best lap you run. Period. There's whiners wanting to average the best lap per day and stuff like that.
Last edited by boomn29; Jan 27, 2011 at 11:23 AM.
#40
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You'll be low on power w/o cams if you start with an VIII. The IX turbo is so much better. Then the fact you start in TTC you start with a smaller base tire so larger tires cost more upgrade pts. Keep that in mind...
But yeah, an Evo can do helli-good in TTB. I've had a lot of success there; just ready to develop the car more so I've bumped up to TTA.
But yeah, an Evo can do helli-good in TTB. I've had a lot of success there; just ready to develop the car more so I've bumped up to TTA.
The 8 starts with the * (7 points) and the 5 point turbo penalty. So you have 26 points to spend and still stay in TTB.
EDDIT: Crap, nevermind. The 8 is TTC** not one *, that extra 7 points is a killer.
Last edited by JDavenport; Jan 27, 2011 at 02:16 PM.
#42
Which in my opinion is crap. There are 8 TT sessions at Nationals, I have proposed some kind of average of best 3 laps or something but it was "politely" rejected. For 1 lap to determine a national champion, thats crazy!
#43
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Well that's what TT is all about. If you want to gauge and compete for consistency, reliability, or performance under all conditions, etc. then one should be doing something other than TT. TT is to show what a car/driver combo is capable of on the "perfect lap".
I do agree that 8 sessions is too many, though. How about 4 scored sessions and 4 practice/qualifying sessions to set your starting spot?
I do agree that 8 sessions is too many, though. How about 4 scored sessions and 4 practice/qualifying sessions to set your starting spot?
#44
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8 sessions may seem a lot, but it really isnt. I cant imagine anyone that would want that proposition. The main argument is that people want the most track time they can get. People dont want to go all the way out to Nationals for 4 scored sessions. Besides, if you have any sort of issues with your car, you may not have enough time to set any decent times with 4 sessions. And since its Nationals, people for the most part want to have as much of an opportunity that they can. You have to remember, some people are traveling +2500 miles to get there. And its once a year. A lot of money, time, and hard work goes into it. Furthermore, the guys who will be supersizing will end up getting screwed also. Because chances are theyre going to miss a few sessions due to their races. And if people decide to not supersize due to lack of timed sessions, NASA will lose money on those entry fees.
#45
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I know you have been around the road racing world much longer than have I. I'm just getting into it and wanted to offer my opinion. I'm sure my opinion may change as I get more into TT and talk with more racers. As far as folks wanting to get as much track time as possible - well, that's what track days are for. Heck - at Solo2 Nationals people travel just as far for only SIX 50-60 second runs. You have to put up your best lap in only 3 tries per course. I think four timed 20-30 minute TT sessions should be enough, with the rest for tuning/qualifying/practice. For head to head race groups - it all comes down to just ONE session doesn't it?