my lca's and uca have the poly/roto-joints. they are brand new!! installed about 3 weeks ago. i am using the bottom bolt hole on the relocation brackets and bottom hole on the umi uca bracket. i still have some clunking going on in the rear. i am going to have the relocation brackets welded along with the bolts. my pinion angle is -2.7. i have the spanner wrench for the roto-joints but they should not be loose!! i tighten eveything up with jack stands under the axle.

 

Are you bouncing off the rev limiter at the launch?

 

The noise at launch is his two step or launch control. Set it to an rpm, floor the gas and it will hold that rpm until you let the clutch out. If it's a two step then he can hold the gas to the floor during shifts and not hit the rev limiter.

 

I got my best time after airing down to 16psi.

 

What I was thinking, too professional/serious for me. Weekend racer here. Happy with his 12.83's NA with no fancy stuff.

 

i am not hitting the rev limiter during launching or even close. when i notice it is spinning in 1st right away i short-shift into 2nd. it continues to spin until i back pedal the throttle and then it hooks and i shift into 3rd and go full throttle from there. but i am losing e.t. cause of all that. one time i shifted in 3rd and it still spun. it started to go sideways so i shut it down. i dont spin that much on the street with my street tires. i am still using the ford racing tune so i know i dont have all that much h.p.!!

 

I think they were talking about my video. It is a 2-step but I put it in more as a safety device. I use a WOTBOX which can do a few things. It's got a 2-step for launching, a no lift shift feature where I can keep my foot to the floor and it will cut the ignition temporarily when I press the clutch in so I don't damage the transmission, and it's got a spark cut rev limiter which is much much safer than the stock fuel cut rev limiter the car has if you have a power adder.

I race just for fun as well and I've only competed twice.

See if you can get someone to video a few of your runs so we can see what's going on.

 

If you are still using the OEM UCA mount, I know what your problem may be.

Stepped Spacers

 

Try 20 psi in the tires and the 2nd gear burnout.

You should be able to sidestep the clutch@ 3000 or better. Actually 4000 come to think of it.

 

I have the stock UCA and mount. I doubt it makes hardly any difference.

Two things he can control at the track:

1. His burnout.
2. His launch RPM

Track prep is very important. Even with no track prep, he should pull a 1.80 60' or better.

After your tires start smoking, count to 4-5 then roll forward with the tires still smoking right up to where you pause before the line.

You can try riding the clutch a little on launch but I prefer to just drop it and go.