DIY: Rear shock, sway bar, and strut brace refit

[stance]

Hi guys i need answer about clanking banging.....i added all this by the first install to the last install...

1- Tein Coilover...little noise banging rear
2- Sway bar trd.. same little noise banging rear
3- Strut bar front upper.. nothing change except front handling is awsome
4- megan racing Front-Middle-Rear lower strut bar... now clanking, banging very hard sound to my ears !!! But the handling is awsome at all so noww do you think i need the rear strut upper bar to eliminate that heavy sound? Is like ting ting ting and sometime if i drive on bumps in a row, i feel the tire like little spin burn...anywayyy heelpp!

[Tapokata]

I can't speak for the other mods, but I don't think much of the banging is related to the TRD sway bar. As it's bolted to the base of the shock mount, it's moving in synch with the shocks. The only possible contact point is in the channel where the front lateral section of the bar resides...



You could crawl under and look to see if there are any signs of marking or abrasion, although I'm not sure what you do to remedy it, as the bar is bolted at two points and is pre-formed.

[Tapokata]

Originally Posted by stance

Hi guys i need answer about clanking banging.....i added all this by the first install to the last install...

1- Tein Coilover...little noise banging rear
2- Sway bar trd.. same little noise banging rear
3- Strut bar front upper.. nothing change except front handling is awsome
4- megan racing Front-Middle-Rear lower strut bar... now clanking, banging very hard sound to my ears !!! But the handling is awsome at all so noww do you think i need the rear strut upper bar to eliminate that heavy sound? Is like ting ting ting and sometime if i drive on bumps in a row, i feel the tire like little spin burn...anywayyy heelpp!

Hard to tell if you changed to a Tein on the rear as well, but I'd look at how you have the dampening setup on the front struts. It sounds like it's at a firmer setting (which I assume would be desirable at the track), but as you have added other suspension components, maybe now too firm? If the dampening is too firm, you're overly restricting the spring/shock travel as you come off the bumps, causing a bit of wheel hop.

On the rears, I don't think the Tein has a dampening adjustment, so check the twin nuts on on the upper strut- if they are torqued down too tight, you can be overloading the shock. There's a rule of thumb from the Hayes manual that I can't recall at the moment- that you don't want less than 15mm and no more than 18 mm of exposed thread on the strut as measured from the top of the lower nut. If you re-torque these strut nuts (18 ft-lbs is the OEM spec), you want BOTH rear wheels on the ground when you do this.

Finally, if the problem is worse after adding the lower support braces, I'd remove those one at a time, until you come up with a combination where you're not banging the suspension around, but still have the handling you are looking for.

[stance]

This is my setup...now ill try the rear upper strut bar and come back here to see if the clanking still there

Originally Posted by Tapokata

Hard to tell if you changed to a Tein on the rear as well, but I'd look at how you have the dampening setup on the front struts. It sounds like it's at a firmer setting (which I assume would be desirable at the track), but as you have added other suspension components, maybe now too firm? If the dampening is too firm, you're overly restricting the spring/shock travel as you come off the bumps, causing a bit of wheel hop.

On the rears, I don't think the Tein has a dampening adjustment, so check the twin nuts on on the upper strut- if they are torqued down too tight, you can be overloading the shock. There's a rule of thumb from the Hayes manual that I can't recall at the moment- that you don't want less than 15mm and no more than 18 mm of exposed thread on the strut as measured from the top of the lower nut. If you re-torque these strut nuts (18 ft-lbs is the OEM spec), you want BOTH rear wheels on the ground when you do this.

Finally, if the problem is worse after adding the lower support braces, I'd remove those one at a time, until you come up with a combination where you're not banging the suspension around, but still have the handling you are looking for.