dropped spindles, tires rubbiing,changing help - Team Camaro Tech
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post #1 of 7 (permalink) Old Jan 28th, 07, 10:46 AM Thread Starter
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dropped spindles, tires rubbiing,changing help

Yes i am a stupid dog. I'm going to get rid of the dropped spindles and go to drop springs but i have a few questions. I am running 15x6 in cragars and 215x60 tires with MP disk brake conversion, which came as a kit with the dreaded dropped spindles. Wheels have 3 3/8 back space. Problem is wheels hit on outside of inner fender well when hitting rough road.Will going to dropped springs with stock spindles solve my problem.Looks like i need to come in about an in.

Last edited by Stainless dog; Jan 28th, 07 at 11:32 AM. Reason: fix
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post #2 of 7 (permalink) Old Jan 28th, 07, 11:34 AM
 
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Smile Re: dropped spindles, tires rubbiing,changing help

Fwiw, the "Joe" offset dimension or wheel hub mount face offset differ's by like 9/16" between drum hubs and two-piece and cast rotor/hubs!!

In other word's, the drum wheel sit's in about 9/16" closer to the S/F on each side vs the other two types of hubs!!

David's great site show's this if you look close..

And my stock '67's 14" x 6" drum brake steel "dog-dish" hubcap rims have a 3.75" back spacing if I remember right so go from there....

pdq67




Last edited by pdq67; Jan 29th, 07 at 07:03 PM.
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post #3 of 7 (permalink) Old Jan 28th, 07, 01:10 PM
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Re: dropped spindles, tires rubbiing,changing help

Stainless dog ...
I had the exact problem you did. I have 225/50/16 BFG's up from, rims have 4.5 backspacing I believe. I tossed it all up from and went with a Detroit Speed and Engineering front end. Tubular control arms and 2 inch drop springs. Spring rate is about 475 lbs. I have absolutely no tire rub and can hook a corner so fast my butt slides to the door panels. Which is now why I've upgraded to Crobeau seats with more side support as well ;-)


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post #4 of 7 (permalink) Old Jan 28th, 07, 03:40 PM
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Re: dropped spindles, tires rubbiing,changing help

Quote:
Originally Posted by Stainless dog View Post
Yes i am a stupid dog. I'm going to get rid of the dropped spindles and go to drop springs but i have a few questions. I am running 15x6 in cragars and 215x60 tires with MP disk brake conversion, which came as a kit with the dreaded dropped spindles. Wheels have 3 3/8 back space. Problem is wheels hit on outside of inner fender well when hitting rough road.Will going to dropped springs with stock spindles solve my problem.Looks like i need to come in about an in.
I think your wheel back spacing is what is giving you problems. As stated, when you go from drum to disc the pad you mount your wheel to is outboard more than with drums. Your 15x6 wheel is about the same as a 15x7 with 3 7/8" back spacing. add the extra 3/8" for the brakes and it's like you are running a 3 1/2" back spaced 15x7. That's about 1/2" too much wheel outside the hub. Add the drop, and maybe front end alignment as well as maybe needing subframe bushings and well you have rub.

I know drop spindles are not optimal but check your alignment spec's and subframe bushings first before swapping spindles and springs. Sure would be easier on the budget if you need them anyway. Might even think about some 15x7 with 4" or 4 1/2" bs to suck the tires in some more.

...Dennis

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post #5 of 7 (permalink) Old Jan 28th, 07, 04:09 PM Thread Starter
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Re: dropped spindles, tires rubbiing,changing help

Thanks Dennis .I think i'm screwed on any more back space because i"m almost up against the droppled spindle tie rod connection now.My subframe bushings are new and alignment recently done.The offset on the 15x7 in cragars is 3mm same as 15x6 but back spacing is 4 1/8.I don't know where they lose the other 1/4 in width on the 7in cragars?

Last edited by Stainless dog; Jan 28th, 07 at 04:32 PM. Reason: fix
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post #6 of 7 (permalink) Old Jan 28th, 07, 04:47 PM
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Re: dropped spindles, tires rubbiing,changing help

On David's site it says 4.25" back space or less - but that's on a 17" wheel. Here's the link with the picture. Check it out. http://www.pozziracing.com/first_gen...#37;20Spindles

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post #7 of 7 (permalink) Old Jan 29th, 07, 03:35 PM
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Exclamation Re: dropped spindles, tires rubbiing,changing help

The CPP drop spindles also move the wheels out another 1/4" (things they don't tell ya) so that adds to the problem.

joe

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69 Coupe; ZZ430; TKO600; 3.55 posi; 13" Baer 4 wheel discs; 17" Billet Specialties wheels; Hotchkis/Koni rear; Ride Tech front; Classic AutoAir AC and power windows cuz I'm old and lazy!
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