heinzboehmer's 2002 Topaz 6MT Coupe

[Bry5on]

Could this be as "simple" as cutting off the old RCA pickups on the stock subframe and welding on new ones but lower? I suppose you could then use two pairs of ARCAs with coilover rear suspension. I might be able to do some scanning with the Einstar and experimenting on my track car over the winter.

A scan would be awesome if you’re willing to share it! The issue is exhaust clearance, but yes that approach could get you there.

[ethan]

So when are we making that custom rear subframe?

Could this be as "simple" as cutting off the old RCA pickups on the stock subframe and welding on new ones but lower? I suppose you could then use two pairs of ARCAs with coilover rear suspension. I might be able to do some scanning with the Einstar and experimenting on my track car over the winter.

[heinzboehmer]

It probably does! Rear suspension looks jacked up because of that damn high rear roll center, and the camber changes *significantly* with ride height because that instant center is basically in the diff, related to the stupid high roll center.

So when are we making that custom rear subframe?

[bigjae46]

I took the rear bumper off to do the muffler swap and noticed that the adhesive on some of the crash bar tabs had failed, so fixed that. Cleaned the area and reattached the tabs with JB plastic bonder. I also decided to add a couple rivets to each tab (including the ones that still hadn't fallen off) for some extra security. Don't think these are coming off anytime soon.

No adhesive seemed to work for me...rivets seem to be the only way to go.

[Bry5on]

Think this pic illustrates the motivation behind the camber arms quite well:

Rear right wheel looks almost like it's got positive camber!]

It probably does! Rear suspension looks jacked up because of that damn high rear roll center, and the camber changes *significantly* with ride height because that instant center is basically in the diff, related to the stupid high roll center.

Apologies for the thread hijack.

[mention]Bry5on[/mention] are you okay with me adding this to the CAD files master list sticky for everyone's future reference? https://r.tapatalk.com/shareLink/topic?share_fid=2212386&share_tid=271707&url=https %3A%2F%2Fnam3forum%2Ecom%2Fforums%2Fmobiquo%2Fredi rect%2Ephp%3Ftid%3D271707&share_type=t&link_source =app

Yep, no problem