Alright so I got new rims a few months ago. Since then I have had about 10 passes on about 4 different occasions.

***EDIT: Both sets of rims are 17s.

I have yet to hit 14.7xx!!!!!!!!!!

I know I have a leak in my clutch system somewhere that I discovered before my last couple track outings. It runs down in a week or so.

Is that why I am running so crappy???
Everyday has been summer weather. Hot as heck, but still.

I hope nothing is wrong with my car. I hope I have just had some sh!tty conditions.
Maybe I should get this leak checked out. I am scared about how much $$$$ it is.


last outing was 9.8 1/8 mi ....

 

Losing 8lbs a corner should've helped alot - like .4sec I think. Something else is at fault. Can't be just the temperature - dropping that weight should be like adding 19hp at the crank. ET's should drop unless the temperature rose 80deg

 

if your rims are a bigger size than the original than your weight is further from the axle therefore it is harder to turn. even though it is lighter, the rotatioal resistance is greater and therefore they cancel each other out, or you could have even gotten worse.

 

You still have your old wheels? Take them to the track and run with both sets. I gained .25 with 40lbs less in wheel/tire weight.

 

Hey Adam, I think you need some of my rice juice for that extra edge.

 

Both sets of rims are 17s.

I had just bought new tires for my old rims so when I got my new rims I had the tires transfered onto the new rims...therefore old rims have no tires on them.

 

It's gonna be hard to tell the difference without running the wheels and tires back to back. You would need to run at the same track with almost identical weather conditions and 60' do give a decent comparison. But with the amount you reduced your wheel weight by I would think you would see some results even if the above factors are slightly different. In your case I would look into making sure the car is running in top shape. There are many many things to look at, but you might want to start with your clutch. Although your clutch is either slipping or it's not.

 

oh its not slipping so i guess i cant blame anything on the clutch...i know its still grabbing hard but it just doesnt work at all when the fluid runs down and i have to fill it back up .

 

You know this is why I tend to believe at times that this type of weight reduction is still a theory/myth cause of all the different stories I hear. I take Kloogy who has those Mille Miglia 19s and still runs awesome times for a 2k2 auto.

Dixit

 

I have done multiple runs the same night, same track and same 60' with heavy 17's and light 15's. I shaved off more than two tenths.

 

And kloogy has a VQ35. The VQ35s are much less affected by big/heavy rims overall because they have so much more torque than the VQ30s.

 

Emax ran awesome times with his 18's and stock tires as well.

 

Cant really have stock tires on an 18" wheel. Stock tires are 17s.

And his 18s are SSRs which are fairly lightweight.

Dixit

 

Sorry non slicks or drag radials.

They are still 18's and ran better than a lot of boosted cars on this forum.

 

Yea but you comparing his #s to what boosted car? a SC on an auto 5th gen? Not the best comparison when he has the 6psd on his car and can powershift the hell out of it. Im not taking anything away from Ethans times, he knows i wouldnt do that.

Dixit

 

You have a ton of mods on your car. Whoa! What are your track times? Do you race your car a lot since you have so many performance mods?

 

Haaha, where you see all those mods on there? Cause I havent updated my website. Turbo is the latest one. Ive have ran it at the track but it was not running right. Still has issues.

Right now the car sits in my garage on jackstands being totally redone (turbo kit that is).

www.bigdogjonx.com/fullpics/turbo/teardown
more pics of the turbo kit are found on sprintmaxs turbomaxima site but I think that is down.
My pics are on www.bigdogjonx.com/fullpics/turbo

Dixit

 

I've run the 14.102 on "bone stock" setup of 17x8CSA's + 245/45zr17's.... weighs in at a little over 55lbs

I'll be trying for a personal best with 15x7 millenia wheels (11lbs) + Nitto 555R's on the 27th... I'll let you folks know how that difference turns out

 

I have 18x8.5 Chrome Niche Spitfire wheels. My best at the track was 16.3. I think the wheels weigh about 45 lbs each. What should I expect to run without my saw blades?
95 SE 5SPD

 

I mean what can I expect to run with my sawblades?

 

45lbs each for just the rim!! If that is correct you will run much, much faster. Just do the math. Each pound you reduce the wheel/tire weight (unsprung) is like reducing 8lbs of dead weight (sprung). A general rule of thumb is for every 100lbs you reduce dead weight the car will be a tenth faster in the 1/4 mile. This will not be exact but it will give ya a good idea of what you can run on the stock wheels/tires.