Spacers
 

I've searched - but cannot find the answer.

Is there a default rule for spacers? I was thinking about adding some "width" to my 78SC rear by adding these 2in spacers:

http://forums.pelicanparts.com/porsche-911-used-parts-sale-wanted/236501-divorce-sale-911-parts-plus.html

But I'm concerned that I might not know what I'm getting into.

Do 2" spacers really add only 2 inches - or is there some offset formula that I might be missing? Like 1/2 inch spacer adds 1 inch at actual wheel.

Any direction would be appreciated.

-Tom

Tom,

2 inch is probably to big. What you you have on your car now? (wheel and tire?)

Souk, hes got 7s and 8s (Fuchs).

Tom, your biggest issue that I didnt mention in my email is the fact that even just 8s with no spacers can rub on the fenders. I have BBS 8s on mine and I had them rub a couple times when I had really givin it the stick coming off of an onramp.

Yes, I'm now realizing there's more variables than I previously considered.

I did some measuring last night, and 2" would put me hitting the wheel wells with my 8"'s for sure.

Much appreciate the advice from both of you.

With the 8" Fuch in the rear you can space it out a little to fill the fender a bit. A 3/4" bolted on spacer may do it. I have some that I have been waiting to put on my car, but haven't had the time. You'll want bolt on spacers or you'll have to install longer studs for slip on spacers. Spacers are about $150/set.

I feel dumb, but I never made the connection...

Do you guys call your cars "Bastards" because of Dean's P-Car?

Can't wait until Blackhawk this weekend, it will be my first DE ever.

I will be there as spectator....

-Tom

You'll have to read the Gruppe B (how we came to be) thread here on Pelican for the full story. There was some back and forth on the name...at one point, I tried to start "27230" for the 74-77 2.7 cars that had 3.0 engine swaps but that failed. Then Brother John (#001) started the thread...and here we are.

The term "Bastard" is really more, because the mid-decade cars (74-77) are generally viewed as abandoned, or less valuable due to their weak and failure prone engines. We don't have the sexy flares of the later impact bumper cars, and we don't have the smooth curves of the early cars. Our hips are flat and our cases are weak (magnesium).

Additionally, the majority of us have little inhibition when it comes to modifying ("bastardizing") our cars. We like to build them to suit our needs and we have a hell of a fun time doing it.

I call my cars "Bastard" and "Fat Bastard" partly for the above reasons, but initially because of Dean. My '76 was MY "bastard."


SEE YOU AT THE TRACK!!!!!

I finally know in which group I need to be "the bastards"...building upon our P-cars is the bast part of it, isn't it?

If you just want to use your existing wheels to fill out the wheel well, spacers work fine. However, if you want to go to bigger wheels and need spacers to accomodate different offsets, then it's a whole other ball game. Plus, if you want to DE, I believe that spacers are allowed however bolt on spacers are not allowed. And, if you are going to add just spacers, you need to get longer studs. And it just goes on from there.

Michael

Is this right? Are spacers not allow in DE??

Thanks

I've heard mixed. Spacers are definitely allowed. I've heard mixed on the bolt on spacer (i.e. hub adapters). I'm not sure if it's a PCA rule or an SCCA rule or just local PCA rulings.

There's a Pelican (Walt Fricke) who does some of the inspections for the Denver region and he seems to know the rule book inside and out so I'll contact him.

Michael

If the rules say you need spacers with long studs, I have a pair of 1 inch wheel\hub centric spacers. I was going to put them on the Classifieds board soon so let me know if you need them.

If you can use the bolt-on spacers, here's a pair on Fleabay

FWIW, I put 1" spacers to fill out my SC flares with 7" fuchs and I got wicked rubbing when I hit any sort of bump...

http://forums.pelicanparts.com/uploa...1128111236.jpg

http://forums.pelicanparts.com/uploa...1128111268.jpg

Per Walt Fricke, Hub Centric adapters are allowed in the Rocky Mountain region.



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mtelliott wrote on 09-30-2005 12:53 PM:
Are the bolt on spacers allowed for DE events? I've heard both and know that you do some of the inspections and would have the best insight.

By bolt on spacers, I'm referring to the spacers that bolt to the original studs and then have another set of studs coming out of the spacer.

Michael

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You mean here in RMR/AMR turf? No problem. They are as strong as spacers can be. Stronger than the long studs with thick spacers I use because they reduce bending loads on the studs.

Dunno about other parts of the country.

Walt

I was getting some rear end sway [7 x 16 f, 8 x 16 r] until I added 1" spacers. The rear end settled down and is really stable now. From what I have heard, Porsche has a '2 inch rule'; 2 inches wider in the rear, compared to the front. Now I know why. No, it wasn't shocks, bad sway bar, or sway bar mounts-the suspension had just been rebuilt completely.
Do spacers-the difference is dramatic.
Drums

Good post Michael. Walt was always a good resource when I was getting Rennlist e-mails. His comment is right on! Two short studs with minimal bending versus longer studs for the slip on spacers is much better. Just make sure the quality of the spacer is acceptable. TechArt makes very nice spacers which are TUV approved. And if you've ever had to perform TUV testing for approval, you'll know their spacers are more than acceptable.

Some others other there also make very nice bolt on spacers. The poor quality ones are pretty obvious in person.