Good to see you are getting closer to your goal. Here is my best time slip when I was hitting 108mph for you to compare with.



It is definitely the first half of the track that will get you there.

 

^ Was that launch on the stock clutch? The only difference in our slips is you've got 7MPH on me in the 8th and almost 2 in the quarter, but would the launch alone really gain me a few MPH in the 8th? As Warrlaton said before I gained 27MPH in the back half, not sure if thats due to the cutout or not but i've got alot more top end then you in the run, yet i'm still running a slower time.

 

Shifting would be my best guess unless you bogged your 60'. I power shift through all gears and shift around 7200rpm typcially. Is it possible you are shifting to fourth prior to the 1/8MPH?. The faster 60' would typically hurt my 1/8th MPH in comparison to a slower 60' where the car is breaking loose. I also run lower tire pressure (around 25psi usually) which also would normally slow down my MPH a bit. I had the Exedy then as my throwout bearing cracked in half before I had any mods.

Up to the 330' is where things were really different. Almost a 1/2 second difference which has a huge effect on 1/4 ET.

 

We'll my 60fts did bog so i'm sure that was a factor aswell aside from shifting. I wasn't powershifting but shifting fast as possible at around 7200rpm aswell. I ran about 30PSI in my tires if that matters, I doubt because my tires don't break loose.

 

^ If your not breaking loose, I wouldn't drop the tire pressure as it will only hurt your MPH with more rolling resistance. The bog will definitely affect MPH. What RPM were you launching at and how were you releasing the clutch? Did you ever break loose? On my good 60's, I am always breaking loose just a bit.

 

I wouldn't call it breaking loose, but there is a slight moment of spinning. I'm reving it up to about 5k, possibly a bit more and I just slip it out very quickly.

 

Try dropping your tire pressure down to 25psi if you are breaking loose. It should help as long as you are not bogging. It will probably require a little more RPM too although with a stock clutch it may have a diminishing point of return.

 

Yeah, i'm gonna just going to wait untill I go home again during winter break to run the car again. That way maybe it won't be so hot once I get to the track. I don't plan on blowing my stock clutch up just to get 12s Not untill I got a replacement atleast

 

Have you ran the same day with the cut out and without? Just wondering how much difference in MPH you have seen.