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-   -   Need help on shifting by time?? (https://www.racingjunk.com/forums/showthread.php?t=31949)

hammertime 04-12-2012 08:04 AM

I've had hoosiers shake, beadlocks fixed that issue :) Tire shake can go both ways but in this case to much wheel speed seems to be coming into play based on the current problem and 60ft. A 390 gear also would help this issue, I've done that too.

SPEEDNEEDS1 04-12-2012 05:20 PM

I am going to Z-MAX this weekend to watch the big boy's play so my brother is going to run the dragster. He is trying it at 5.0 psi the first pass and then he is moving the two-step down then up 400 rpm, after it is as good as its going to be I told him to tighten the coilover 2 clicks at a time to find what the car wants. He is testing Friday and racing Saterday.

TheYellaBrick 04-12-2012 08:08 PM

http://www.youtube.com/watch?v=mfJejgODr3E

http://www.youtube.com/watch?v=hR_QedH-yRE


http://bangshift.com/blog/watch-an-i...rag-slick.html

http://www.youtube.com/results?searc...450.0j12.12.0.

shawnp 04-13-2012 03:58 AM

In some cases lowering the launch RPM makes things worse as you flash the convertor to hard. Sometimes a higher RPM with less flash can settle things down. Don't be afraid to take that tire pressure up as well.

SPEEDNEEDS1 04-15-2012 05:25 PM

I talked to my brother last night and he said test session went bad. The roll over valve fell apart and after the car would get to 150ft.out it would fall on its face. Done this 4 passes in a row before he found it. Went to put fuel in after the 4th pass and it was laying where he could see it.

He was afraid to try any different settings until he made the car run again. Saterday's race he raised the launch and lowered the tire press. to 5psi. I ran 1.061-1.065 all day. Seems to work good like that for now but on a 95 degree day in July when th track is really greasy I think I will have to go with the 17x33.5 Hoosiers that I have, in search for 16" wheels....


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