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Track car build, NASA ST5, SCCA STL

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Track car build, NASA ST5, SCCA STL

Old 04-07-2018, 11:02 PM
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Great progress.
I am very interested on this build.

Did you do anything to get more camber?
On my track car I only got -2.1 in the front. Rear has more room but i find my front limited.
Tire wear shows that I could benefit from more.
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Old 04-08-2018, 08:26 AM
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He and I are both running whiteline front offset UCA bushings. I have plenty of front camber adjustment at 13.5" ride height.
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Old 04-08-2018, 09:52 AM
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Originally Posted by hufflepuff View Post
He and I are both running whiteline front offset UCA bushings. I have plenty of front camber adjustment at 13.5" ride height.
Thanks. That is from the center of the wheel to the front fender right?
Can you get 3 degrees"

Another question. What cooling upgrades are you running?
Upgraded thermostats for oil and water? or bigger radiators?

TIA
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Old 04-09-2018, 10:41 AM
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Originally Posted by bert88si View Post
Another question. What cooling upgrades are you running?
Upgraded thermostats for oil and water? or bigger radiators?

TIA
right now, the only cooling upgrades i have is koyo radiator. i might make shroud for the radiator and also relocate the stock oil cooler to get more air from the front, they are offset for the fog light, and i took them out.
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Old 04-10-2018, 08:06 AM
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did a first track event this past weekend for a shake down run. no major issues other than bad ground wire to the chassis made the car shut off during hard cornering, when the electric power steering used the most power. and the nut on the exhaust vband flange came off. ran on 10 years old all season tires that came with the car when i bought it. also brought a set of used Conti but they chunked after 2 session, they were pretty old. played around with shock settings and tire pressure a little.

had fun chasing another rx8 around on track. he had shocks, exhaust, and azenis 2 tires. stock tune and full interior.


Last edited by trackjunkie; 04-10-2018 at 08:10 AM.
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Old 04-11-2018, 06:54 PM
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5.125 ring and pinion

Originally Posted by Mr. Pockets View Post
I have a spare.
Hey. I'm seeking to track an Rx8 in Jamaica. Seeking a used or affordable 5.125 diff. Would you sell? If yes, How much?
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Old 04-12-2018, 09:58 AM
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Originally Posted by Miracle View Post

Hey. I'm seeking to track an Rx8 in Jamaica. Seeking a used or affordable 5.125 diff. Would you sell? If yes, How much?
i do not have a spare one to sell
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Old 04-24-2018, 03:39 PM
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Since removing the fog lights leaves lots of empty room, I made a simple bracket to move the oil cooler over by 2", to get more air to it. I just loosen the rear bracket and move it as needed.
Attached Thumbnails Track car build, NASA ST5, SCCA STL-img_20180409_181823630_hdr%7E01.jpg   Track car build, NASA ST5, SCCA STL-img_20180409_182147032_hdr%7E01.jpg   Track car build, NASA ST5, SCCA STL-img_20180409_181037246_hdr%7E01.jpg  
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Old 04-25-2018, 07:05 AM
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Originally Posted by trackjunkie View Post
Since removing the fog lights leaves lots of empty room, I made a simple bracket to move the oil cooler over by 2", to get more air to it. I just loosen the rear bracket and move it as needed.


Great stuff, thanks for sharing the pictures.
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Old 04-25-2018, 08:14 AM
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Originally Posted by hufflepuff View Post
Great stuff, thanks for sharing the pictures.
you'll have to trim some of the shroud on the cooler since it will be blocking some air. you'll see what you have to trim once you move the oil cooler over.
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Old 04-25-2018, 02:31 PM
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Originally Posted by trackjunkie View Post
Since removing the fog lights leaves lots of empty room, I made a simple bracket to move the oil cooler over by 2", to get more air to it. I just loosen the rear bracket and move it as needed.
I was just thinking about doing this myself...
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Old 05-08-2018, 08:27 AM
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After the first competition at Summit Point where I got coolant overflow, I decided to do hood vents to help keep coolant temp down and also increase some front downforce.
Attached Thumbnails Track car build, NASA ST5, SCCA STL-img_20180427_170826698%7E01.jpg   Track car build, NASA ST5, SCCA STL-img_20180427_182440675%7E01.jpg   Track car build, NASA ST5, SCCA STL-img_20180427_184650730%7E01.jpg   Track car build, NASA ST5, SCCA STL-img_20180428_212812823_ll%7E01.jpg   Track car build, NASA ST5, SCCA STL-img_20180504_063741785_hdr%7E01.jpg  

Track car build, NASA ST5, SCCA STL-img_20180504_085954754_hdr%7E01.jpg  
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Old 05-08-2018, 10:03 AM
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Did you manage to see what your coolant temps were during or around the overflow event?
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Old 05-08-2018, 11:04 AM
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Originally Posted by NotAPreppie View Post
Did you manage to see what your coolant temps were during or around the overflow event?
no i did not get coolant temp when it overflow, but the stock temp gauge was at normal position. i had drained the coolant when i did the radiator swap, and just added water back in. so it was mostly water plus what ever coolant that was left in the engine. i wanted to have some coolant since March events are usually bellow freezing over night. now im running straight water with water wetter.

i was hopping the AiM solo DL 2 would be out by now and use that as water temp gauge. i sold the old DL a couple months ago.
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Old 05-08-2018, 03:32 PM
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If you still have issues after your hood mod, make sure your AST cap is working and the mating surface below the overflow hole is clean.

I ran into problems my car would dribble coolant from the overflow when autocrossing and it took me forever to figure out it was the mating surface. It turns out that when you hook up the coolant system tester, it makes better contact with the AST than the cap does. Likewise, the tester makes better contact with the cap than the AST. So, kept having an issue, kept testing, no leaks, pulled hair, went crazy, took somebody's advice and did a thorough wipe down of the mating surface. No more maple syrup smell.

It didn't look dirty but the problem hasn't come back since then.
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Old 05-08-2018, 03:45 PM
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i'm planning to get the moroso AST eventually, but the oem AST was recently replaced before the got the car. so i'm going to use it for this season.

i got an overflow can on ebay for $12 and made a quick bracket. it would at least catch any water that might spray out the AST.
Attached Thumbnails Track car build, NASA ST5, SCCA STL-img_20180501_204447472_hdr%7E01.jpg   Track car build, NASA ST5, SCCA STL-img_20180501_205112157_hdr%7E01.jpg   Track car build, NASA ST5, SCCA STL-img_20180501_205121829_hdr%7E01.jpg  

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Old 05-09-2018, 10:35 AM
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Which hood vents are those, and why did you pick them? I have a set of Singular vents coming tomorrow. I hope to get them on the car before a return trip to Mid-O in a couple weeks.
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Old 05-09-2018, 10:41 AM
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Originally Posted by Mr. Pockets View Post
Which hood vents are those, and why did you pick them? I have a set of Singular vents coming tomorrow. I hope to get them on the car before a return trip to Mid-O in a couple weeks.
a few of my bmw buddies used those vents, they look pretty good quality, that's why i went with that style. i got the bmw front vent and miata NA rear vents.

vraptorspeedworks.com

i'm thinking of doing a nasa great lakes event at mid o this year. you doing the nasa pittrace?
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Old 05-09-2018, 11:25 AM
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Originally Posted by trackjunkie View Post
a few of my bmw buddies used those vents, they look pretty good quality, that's why i went with that style. i got the bmw front vent and miata NA rear vents.

vraptorspeedworks.com

i'm thinking of doing a nasa great lakes event at mid o this year. you doing the nasa pittrace?
You know, I think I looked at those very vents last year, the same weekend I rolled my last car - and on a BMW, as well.

I plan to be at all NASA GL events this year. The only one I skipped was Gateway. Pitt is phenomenal and I can't wait to go back.
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Old 05-09-2018, 11:31 AM
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awesome, pittrace is a great track now that they added a second track and repave the whole thing. what class you running with nasa? my car is currently PTD, even though i'm still 15 whp down from max for the class. if i have a new motor by then, i can run ST5 which was the plan for this car.
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Old 05-09-2018, 11:58 AM
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I'm competing in TT5 this year. Nearly everybody in TTD in GL made the switch to 5 as soon as it was available.

I'll try ST5 eventually, but I'm in no rush to go w2w. I place some of the blame for my accidents last year on going too far too quickly. Now I'm in a new car with a lot to learn, so I'm trying to take it slowly. It's paying off.

I'd like to do comp school before the end of the season, but we'll see.
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Old 05-09-2018, 12:15 PM
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Ah I see. I've been doing TT for almost 10 years. Just did comp school and first race last weekend. I hope there's still some ptd left for me to run with. I can bump up to st5 but with the current engine, I'm way out of class.
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Old 05-09-2018, 02:29 PM
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Yeah, this is only my second full season of TT. I'm a bit frustrated with some of the format's limitations, so I won't be in it for long.

ST5 in our region is not well-subscribed yet. I'm competitive on paper with their fastest laps, or I will be with new tires. But there's not a ton of data yet, so that could change.

How much power are you making, and what's your weight like?
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Old 05-09-2018, 09:40 PM
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current power is 168 whp mustang dyno, so I have to add 10%. and comp weight is 2900 right now. i need to drop more weight and add increase power
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Old 05-09-2018, 10:01 PM
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Assuming that Mustang dyno result is 15% lower than a Dynojet, thatís right about where mine should be. Maybe. I was able to get away with a two-year-old dyno result this year, but I really ought to have the car tuned and run on a dyno.
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