Need help on shifting by time??
#21
Senior Member
RACING JUNKIE
Join Date: May 2003
Location: Coldwater, MI
Posts: 2,998
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.
#22
Senior Member
SENIOR BUILDER
Thread Starter
Join Date: May 2006
Location: Pikeville KY
Posts: 109
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.
#23
#24
Senior Member
RACING JUNKIE
Join Date: Mar 2003
Location: Ohio
Posts: 936
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.
#25
Senior Member
SENIOR BUILDER
Thread Starter
Join Date: May 2006
Location: Pikeville KY
Posts: 109
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....
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....