I have a 98 se 5 speed, short ram intake and stillen y-pipe. 17" toyo proxy 4's
and sprint springs. this never seems to happen on the street, but on the track i can't get the car to stop hops through 1st gear. and my 60ft time reflect it (2.25-2.41). i launch from about 2500 rpm. I have even tryed not droping the clutch off the line, but it seems that when i get the gas to the floor in first, it just about shakes the teeth out of the back of my head. Any one have any ideas?

Best track et 14.77@ 93.95mph

 

What tire pressure did you use for the fronts? Try around 20-25, this should eliminate your wheel hop.

 

If I am wheelhopping alot I drop the front tire pressure. It doesn't necessarily eliminate it entirely but it can make it less severe, sometimes eliminate it entirely. Beyond that, ES or PR motor mounts (I have ES and love them). Beyond that, J-bars traction bars from JClaw.

 

same boat, great launches on the street but at the strip = terrible... I ran 14.8 with a 50 shot...

 

Well i did drop my tire presure to around 25psi but still, wheel hop was terrible,
I would like to find more information about the above parts. and would any of them interfere with my autocross aspirations?

 

I have the ES mounts and JClaws bars, but when I tried them out at the track last week I got more wheel hop then even, and it killed my times, although I was still able to pull off good 60's (2.1-2.2). I would hope real bad off the line, then get even more when I shifted into 2nd. My tire pressure was at 25 psi.
I think it may have to do with the condition of the track. My car has never hopped like that before, and it makes me question the worth of these traction bars.

 

hmm, interesting. do u have times for just the es mounts? I have them but not installed... kind of a lot of work to get them fitted. but I will most likely get them in over the summer. It would be great if u had a 1/4 comparo between stock mounts and es, but I know that a lot to ask

 

You know i think it also has alot to do with you spring rates. i think really soft (factory) or really stiff (ground controls) might play a big role also. i am going to try switching my springs, i have a was differnt types, and see it that helps any.

 

I do, but they mean nothing since I have done an engine swap since then. Regardless of times, I wholly reccomend the ES mounts. They do a real nice job of eliminating 80% of wheelhop. They jury is still out on the traction bars.

 

getting stiffer motor mounts will help. I have ES in my 98 and I filled the mounts in my 95 with urethane. Last time I went to the track in my n/a car I did not get bad wheel hop, but I was running lower pressure than what you guys are talking about. I was running at about 18 psi (on my boosted car I run 15 psi). IMO 25 psi is too much air to be running at the track. When I launch I usually do not get a lot of wheel hop but I also ride/slip the clutch. When I just drop the clutch I also get a lot of hop. In both of my cars I have cut 2.0x 60's on DR's so I am not hopping too much.

 

Wow, 2.0 in the 60ft, great numbers. i will try lower tire pressure, but i will have to bring a air tank becuase 15 pounds it to low to drive home on.

 

or do what I do, and just bring a set of fronts to run on (assuming you have or would want to buy another set of wheels to fit the max), and then have the other set that you drive on. Just swap the wheels/tires in the pits.

 

Well I'm glad I'm not the only one that has had this experience. After installing the Jbars and ES bushings I went to the track and had the worst wheel hop ever. I had my tire pressure at 25 PSI. I figured that at that PSI level I with the bars that I shouldn't get wheel hop. How wrong I was. I've gone to the track and had my tire PSI at 20 and never had to worry about wheel hop. I need to go again and try a lower PSI with the Jbars before I can say if they are a waste of money or not but as of right now, they aren't looking too good.

 

well infact i have two different sets of 17" wheels other then the ones on the car right now so if i get another set of skins i could do that. if infact i were to do that i might as well get some dr's or sliks right?

 

You guys need to adjust the bars to push toward the rear of the car. The control arms will tilt forward initially then push back. The bars should already be pushing them back.

 

What did you run?

 

He is running Drag Radials, that's why he's benefitting from running that low of tire pressure. I wouldn't start out with that low of pressure on street tires. Infact I wouldn't go that low period. I run normal street pressure (32, 34, whatever I happen to have them set at) on my normal street tires, and only bother to drop it if I'm wheelhopping badly. My cars still hold a number of street tire records for maximas so that method works OK for me, no reason to drop the pressure down super low that I've been able to find.

Wheelhop depends largely on launch technique and track prep. Some days I'll hop very badly and some days it won't hop at all. Likewise sometimes on the same day, I'll wheelhop badly on one run, and the next run not wheelhop at all with no changes.