Poly bumpstops
Poly bumpstops So I'm about to install some brand new BMR 1.25" lowering springs and some Bilstein HD shocks. Can someone educate me a bit on bumpstops... like will I need to change them, why or if polyurethane is a good idea, and part numbers for the ones I will need?
Stranoparts has them listed on the website but doesn't list the part number. They say they are for Jeeps but fit Fbodies.
I found these... are they the ones? They look identical.
http://www.ebay.com/itm/PROTHANE-URE...item27ba9a7ec0
Stranoparts has them listed on the website but doesn't list the part number. They say they are for Jeeps but fit Fbodies.
I found these... are they the ones? They look identical.
http://www.ebay.com/itm/PROTHANE-URE...item27ba9a7ec0
If the quality of your bumpstops appears to be in a nice, soft condition, you should be fine. There are a lot people swapping to Jeep polyurethane bumpstops. I do not believe they were designed for the F-Bodies, though. My cars had them cut out entirely to clear more tire.
So I'm about to install some brand new BMR 1.25" lowering springs and some Bilstein HD shocks. Can someone educate me a bit on bumpstops... like will I need to change them, why or if polyurethane is a good idea, and part numbers for the ones I will need?
Stranoparts has them listed on the website but doesn't list the part number. They say they are for Jeeps but fit Fbodies.
I found these... are they the ones? They look identical.
http://www.ebay.com/itm/PROTHANE-URE...item27ba9a7ec0
Stranoparts has them listed on the website but doesn't list the part number. They say they are for Jeeps but fit Fbodies.
I found these... are they the ones? They look identical.
http://www.ebay.com/itm/PROTHANE-URE...item27ba9a7ec0
You can get them from Summit for $22 shipped.
Check your bump stops; mine were cracked & worn out. They were done for. From everything I've heard, you'd ideally like to the original Z28 bump stops, but you're likely not going to find them new anymore as these cars have been out of production for a decade now. Enter the Energy Suspension poly bump stops...
When you take yours off & try to mount these, you'll see that there is a small metal lip in the way preventing them from sitting properly. Cut that lip off with a grinding wheel, paint over any expose bare meal to prevent rust (If you have some handy, some rust preventative primer is a great idea & only takes 10 seconds to put on). After that's done, you just slip the two original bolts through & tighten them down. Done. (see "Kwiksilverz28's" picture).
You can get access to the bump stops by just taking the rear wheels off, so you can do this before or after your shock install; In other words, don't delay your suspension install if you don't have the bump stops in time.
I don't think I've touched them. Haven't really done any launching since putting them in, and also put the rear isolators back on at the same time the heater hose mod got old.
No complaints & for $20 and under an hour of time, very much worth it to me.
No complaints & for $20 and under an hour of time, very much worth it to me.
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I consider poly bumpstops a finishing touch and not absolutely essential. As mentioned above, rubber ones work fine. Bumpstops are kind of like an insurance policy, not used very often but important when you do need them. They're a nice touch on an all poly car.
Also, does anyone know if the rear end can touch the bump stops if your running a drag swaybar? Seems like the sway bar is stiff enough it wouldnt allow the axle to come up that high.
