View Single Post
Old 06-06-2013, 12:26 PM   #34 (permalink)
onefstek
EcoModding Lurker
 
Join Date: Dec 2011
Location: Kent WA
Posts: 28
Thanks: 2
Thanked 7 Times in 3 Posts
Well I been MIA for the last few months but I been really busy with a new shop, but I also had a little time for the race car.

Ended up reusing the same motor from last year and just refresh it a little bit to do some more testing on the car. We dyno tuned the car and it made about the same hp as the motor last year.

For the most part the set up is the same, with a few exceptions.

Weight is 2050 instead of 2150
Intake manifold instead of ITB's
Under car belly pan
Rear diffuser

Car ran a best of 10.9@ 126 mph.

This year first time out we were in for a surprise. We were expecting the car running a 10.8 or a 10.7 due to being 100 lbs lighter.

Fist run off the trailer car ran a 10.69@127mph.

Through out the day we tested a few different tire pressures and launch techniques and by the end of the day we were able to bring down the time to 10.65 @ 128 mph.

A week later and a few more improvement on the car, including a few more hp from some changes we did on the dyno we were out to another race.

Again first pass off the trailer was to be a surprise. With a very fast car lining up to us I decided to go all out and see what I can do. Car bogged in 1st gear from our 8000 rpm launch down to 4000 rpm where power is very limited. But the car came out ok and on the return road I picked up a slip that was 10.56@130.2 mph.

Not sure what of the changes worked yet, but im assuming that my long search for the aerodynamics of the car had allowed me to run some good times in conjunction with a well set up suspension and a not so bad power from a small motor (my 2.4 vs 2.7l comparing to other faster cars)

So I wanted to thank this forum for being so open about mods that work and willing to help others.

Stefan
Attached Thumbnails
Click image for larger version

Name:	belly pan.jpg
Views:	392
Size:	15.9 KB
ID:	13176   Click image for larger version

Name:	rear diffuser.jpg
Views:	435
Size:	11.0 KB
ID:	13177   Click image for larger version

Name:	new eg.jpg
Views:	528
Size:	15.2 KB
ID:	13178   Click image for larger version

Name:	rear diffuser on car.jpg
Views:	483
Size:	15.5 KB
ID:	13179  
__________________
Sorry, new users are not permitted to post links in their signatures.
  Reply With Quote
The Following User Says Thank You to onefstek For This Useful Post:
ChazInMT (06-06-2013)