Is there still a rear camber kit available for the 1991s?

[LeftyF]

I swapped the stock wheels/tires for a set of Volk wheels and Yokahama low profile tires when I bought the car. I've got a bit of positive camber (top of the wheel is farther in) which I need to dial out. We've found in checking the rear camber that the stock adjustment is at max. I'm checking to see what the current options are for a rear camber kit. I saw the Thom kit was around a few years ago, but I can't find anywhere that sells it currently. Please let me know if you are aware of any other kits that might resolve this.

Thanks in advance for any info

 

[ChrisD]

I think you mean negative camber? Typically, changing wheels has no affect on camber. However, lowering the NSX does pull the top of the rear tire in, thus causing negative camber (and other detrimental effects to the geometry).

Production of Thom's kit has changed hands over the years, not sure if it's still being produced. The other method is CRF sells rear beam bearings that can reduce negative camber by up to a degree depending how lowered you are so it may or not be enough.You can either press the bearings yourself or ship your rear beam in.

 

[LeftyF]

Thanks for this. As far as we can tell the car is at stock height, but I’ll get that checked. Please also share details on the current kit.

Thanks so much for your help!

 

[LeftyF]

If you look at this shot, it looks like the rear is a bit raised if anything?

 

[ChrisD]

Looks stock but hard to tell. Regardless, you should be able to adjust camber to within specs at that ride height. I'd figure out why. Was the suspension modified in its history before you got the car?

 

[docjohn]

this is an after market coil/over set at oem ride height with 255/40/17

 

[docjohn]

the fender gap can look greater as you go up in wheel diameter and lower in sidewall thickness ie aspect ratio..

 

[TANTO]

Camber should not make much of a change in height, yeah that just looks high. I would say your alighment guy really messed up if you have "positive camber". Now matter what wheels/tires you should be able to get it back to negative without a "kit". Have you checked with Ti Dave at Cedar Ridge Fabrication? Around 1998 i had the "more camber is better" mind set and wanted to get to around 3 neg in the rear. I ordered new rear camber adjustment bolts, cut off the exiting oval washer, fabricated four new "washers" with about 1/8th to 3/16" less offset, welded on the one side and got all nickel plated. This takes some high-ish level to fabricate, but i assume track guys do the same - it allows greater camber while maintaining the excellent stock config. That said i'm getting ready to install coilovers and thinking i will reduce my rear camber from it's current 3 degree to 2.5 (cause 3 seems silly). If memory serves you can get to neg 2 1/4 to 2 1/2" without these fabbed parts. I will likely put the OE ones back in now. Regarding your height i suggest you find a nice flattish pavement (not likely a garage) and take measurements to the jack pads and compare to the manual. I just happen to be doing this now and use a short section of 4x4 and simply tape on 1/4" wood strips until i get there. Finding a really flat floor is difficult, but it could certainly tell you what you are dealing with. Positive camber is no good.

 

[LeftyF]

Camber should not make much of a change in height, yeah that just looks high. I would say your alighment guy really messed up if you have "positive camber". Now matter what wheels/tires you should be able to get it back to negative without a "kit". Have you checked with Ti Dave at Cedar Ridge Fabrication? Around 1998 i had the "more camber is better" mind set and wanted to get to around 3 neg in the rear. I ordered new rear camber adjustment bolts, cut off the exiting oval washer, fabricated four new "washers" with about 1/8th to 3/16" less offset, welded on the one side and got all nickel plated. This takes some high-ish level to fabricate, but i assume track guys do the same - it allows greater camber while maintaining the excellent stock config. That said i'm getting ready to install coilovers and thinking i will reduce my rear camber from it's current 3 degree to 2.5 (cause 3 seems silly). If memory serves you can get to neg 2 1/4 to 2 1/2" without these fabbed parts. I will likely put the OE ones back in now. Regarding your height i suggest you find a nice flattish pavement (not likely a garage) and take measurements to the jack pads and compare to the manual. I just happen to be doing this now and use a short section of 4x4 and simply tape on 1/4" wood strips until i get there. Finding a really flat floor is difficult, but it could certainly tell you what you are dealing with. Positive camber is no good.

Thanks, this is really helpful. I'll check the measurements against the service specs and confirm here.

 

[Honcho]

To echo @TANTO, rear camber around 2 degrees is perfectly fine for most NSX driving conditions. More camber is helpful on the racing circuit, but few owners turn their NSXs hard enough on the street to where the extra camber will help create a better contact patch. Think fully-loaded entry into apex at 60+ mph. You really have to lean on the side of the car for the camber to help you. I can't imagine even trying to drive like that around my neighborhood! I think my rears are around 2.5.

 

[LeftyF]

I took it to another alignment shop and he was able to dial it back to stock camber. It’s straight and right now, so hopefully I can get a bit more out of these back tires…