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Old 10-16-2007, 05:20 AM
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Drop spindles/rim clearance issues?

Have any of you experience with clearance issues between the rim and lower ball joint when using Mustang II dropspindles?

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Old 10-16-2007, 06:06 AM
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How much clearance do you have?
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Old 10-16-2007, 06:56 AM
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I don't know - yet.
My car sat too high in the front so I wanted to swap to dropped spindles.
Fat Man Fab (where the front suspension is bought from) offered me a good deal on a pair of dropped ones if they got my std height spindles in return.

My std spindles are sent and the dropped ones are on their way.
Last night I did a rough mock up on how the car will look and I noticed that the lower A arm where the ball joint is fastened came very close to the inside of the rim. The rims are 16x7" with app 3,5" backspace.

I've read somwhere that with M II dropped spindles are not recommended on smaller than 15" rims because of clearance issues. So I've always thought my 16" rims would have plenty of clearance and haven't paid any attention to this until now.

Stupid, of me not to consider this earlier, of course. But with the standard spindles, the smallest clearance was between the upper A arm and the rim.

But then again. Maybe I'm worrying too much and it all will fit just nice.

I just became curious if this is a common problem.
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Old 10-16-2007, 07:17 AM
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Take a look at the photo in my gallery. I am building a '41 Chevy. I put 2" drop spindles on and had to remove my lower grease zerks. I have '94 Trans Am 16" wheels on for now, I plan on getting 17" Cragar SS wheels soon. That should take care of the problem for me. If you need a closer photo taken, let me know. Hope this helps.
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Old 10-16-2007, 03:29 PM
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Ok. I guess I'll just have to wait and see.
Worst case I just space out the rims a little.
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Old 10-16-2007, 07:42 PM
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Dropped spindles/ rim clearance issues?

I would call Fat Man. They could tell youwhat works.

Youngster
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Old 10-16-2007, 08:12 PM
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I have fatmans front end on my 36,with 2" drop spindles. the wheels are 6x15 with 3.5 back space. the lower ball joint is not even inside the wheel, infact the rotor is about flush with the inside wheel lip. What hubs are you running that puts the wheel so deep over the spindle? you can see the fatman set up in my photos.
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Old 10-17-2007, 05:03 AM
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Thank you for your replies, all of you.

Since I'm using BMW 5 series rims on my Chevy bolt pattern rotors (nearly the same bolt pattern) I don't expect Fat Man to be able help me on this one.

But as I said earlier: I maybe worrying without reason. I'll just wait and see when the dropped spindles show up.
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Old 10-17-2007, 06:33 AM
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Sounds like your rims have a little too much back space. But who knows? You are worrying about a problem that you do not know if you have yet ...because you don't have the parts yet to see for sure how the fit is going to be.
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Old 10-19-2007, 12:20 AM
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Measured last night. the rims have 4" of backspace.
But as Mr Highrise said: I just wait and see.

It's not wise to use my limited iq on a problem that might not appear at all.

But thank you anyway. I got good answers on my initial question: It's NOT common to have clearance problems with 16" rims on dropped M II spindles.

I'll do a follow-up.
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Old 10-19-2007, 08:48 AM
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Re: Drop spindles clearance

YEP! Been there! I had to put 7/16" spacers between rim and rotor. Works fine now. I had to use old style "ET" type lugs.
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Old 10-20-2007, 04:26 AM
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Got them today.
No problems at all with 16x7" rims w/4" backspace!
Good clearance between the inner rim edge and upper/lower A arms and on the steering arm too.

Actually, with this much backspace the clearance became better all in all with the dropped spindles, since the clearance between the upper A arms and the inner rim edge were very small (but not too small) with the standard spindles.

So I was worrying for nothing. But now we all know it for sure. Maybe some other will be needing this information later.

Last edited by staleg; 10-20-2007 at 11:53 AM.
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Old 10-20-2007, 05:57 AM
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Glad that it worked out for you.
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Old 10-21-2007, 03:37 AM
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Yes, me too.
Returning parts several times across the atlantic ocean isn't what I want to use my builder budget on!

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