A lot of times you can mitigate wheelhop simply by altering tire pressures. My car will wheelhop pretty bad on street tires sometimes (a million things affect it, tire pressure, track surface, track temp, track prep, bushing wear, bushing stiffness, clutch modulation, etc etc etc) but the first thing I do at the track if I wheelhop is start lowering my tire pressure some and often it will make it less of an issue.

Brian's car never wheelhops to my knowledge when he runs much lower DR pressures at the track, but he just forgot to lower it this time so I had to wait with him at McDonalds for the tow truck to show up and give him a ride back to his place since the tow truck driver had two middle aged asian women in the cab with him... (I don't know, and I didn't ask... lol).

 

"You should be more careful next time..."

 

The wheel hop in our cars is caused by the diff bushing. If you look under and see black streaks around your diff then the bushing has ruptured. Unfortunatly its very expensive to replace this with an aluminum bushing and will cause some driveline whine. The flexing of the bushings causes wheel hop too, its actually the tires gripping and turning inward and slipping and then regripping rather than actual hopping though that causes this. I only get wheel hop at the drag strip, do you guys think lowering the pressure on street tires would help? What would be a safe pressure assuming I'm going well over 100 by the time I would get to the end of the track?

 

I wondered what those black streaks were...haha...mine has been ruptured for about 2 years and I didn't even know. This is the FIRST time I've gotten noticeable wheelhop.

 

Throwing out some free advertising here, I just remember seeing these awhile back.... SPL Solid diff bushings

 

You're on street tires, so your case may be different.
+1
Feather your clutch more, ease onto your accelerator pedal, and learn to modulate things better.
This only applies if you're on drag radials. You can also lower your street tire pressure, but they're not meant to be driven with lower pressure. Other drag race tire pressures don't need to be "lowered" since they should be low to begin with anyway.
+1

 

I had the same thing happen to my DSS level 2 the inner CV cage that houses the bearings shattered causing the splines on the axle to slip rounding them off. BFG DR with too much pressure as well

 

Looks like I may have to make a set of solid diff bushings.

 

The axle shaft pictured looks like a stock one...

 

You might be right I have a bout 4 axles in my garage that might be a stocker for the driver side. I went and looked in my garage again I can't find the level 2??? I went out and took the pictures after I saw your thread but I broke the axle over a year ago sorry for the confusion. I think the level 2 was rounded off more

 

I remember that day at Castrol Gord. You were saying (and Dustin) that there was too much wheel hop, and I said lower your tire pressure. I remember you saying that your pressure was in the 34psi range. I think you were also running some crazy negative camber back then too.

 

Ouch! Simple mistake that isnt very forgiving with so much power...

 

Yes a lesson learned the hard way. I am going to work on loading up the drivetrain more with the method you recommended.

 

I'm going to work on letting air out of my tires...

 

ya and that too. I thought I might get ribbed for that I after I hit submit reply . My stocker broke because of drive train shock so loading the drive train and lower pressure in the DRs both must haves