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Rear Wheel Stud Removal?

Because I'm going with the wider tires [345/35-15], I've determined that I need to go with a little less wheel spacer on the rears.

Going from 25mm to about 10mm spacer. As a result, my wheel studs will be a little too long to fit inside the BBS screw-on cap.

So, I need to take 15mm off the length of the studs. So, they'll go from 70mm to 55mm.

Has anyone removed these before? I'm thinking if I get all of the E-brake stuff out of there it'll come out the back?? Any practical experience with this out there in P-ville?

And, thoughts on shortening the studs??

Thanks, Shannon

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LIVN80S - - Red '79 Porsche 930 Steel Slant Nose Conversion [in 1987] w. 46k miles 3.3L; 964 Cams; K27HF @ 1.0 BAR, with Garrettson Intercooler; Rarly Zork; CIS Flowtech Fuel Head & BL-WUR.
Old 06-26-2010, 06:25 PM
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The studs are too hard to shorten. The rears are the easy ones and should pop out the back once you get the pads out of the way.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
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Old 06-26-2010, 06:37 PM
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You mean the E-brake shoes?

On another note, does any one make a stud longer than the stock rear ones? I'd like to add 3/4" - 1".
Old 06-26-2010, 07:12 PM
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Quote:
Originally Posted by RarlyL8 View Post
The studs are too hard to shorten. The rears are the easy ones and should pop out the back once you get the pads out of the way.
So, a 4.5" cutting wheel on a grinder won't do the trick? Just cut to desired length and run die-tool over to clean up??
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LIVN80S - - Red '79 Porsche 930 Steel Slant Nose Conversion [in 1987] w. 46k miles 3.3L; 964 Cams; K27HF @ 1.0 BAR, with Garrettson Intercooler; Rarly Zork; CIS Flowtech Fuel Head & BL-WUR.
Old 06-26-2010, 07:12 PM
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^^^^ That was my suggestion on the earlier thread.
Old 06-26-2010, 07:15 PM
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Porsche Crest I got some...

Quote:
Originally Posted by A930Rocket View Post
... On another note, does any one make a stud longer than the stock rear ones? I'd like to add 3/4" - 1".
... 10 brand new 100mm that could be yours.
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Old 06-26-2010, 07:30 PM
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I run a steel nut down the stud to where I want to cut it. Cut it with a cut off wheel, round it with a small disk sander, then back the nut off to clean up the threads.
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Old 06-26-2010, 07:49 PM
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What are the stock lengths to compare? I thought 100mm was stock?

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Quote de A930Rocket



... On another note, does any one make a stud longer than the stock rear ones? I'd like to add 3/4" - 1".


... 10 brand new 100mm that could be yours.
Old 06-26-2010, 08:13 PM
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After changing my rear wheel offset so there is no more rear spacer I cut my rear studs down with a cut off wheel on a die grinder while they were on the car. No different than cutting any other bolt and alot easier than removing them.

Then used the side of the cut off wheel while pivoting the die grinder around the end of the stud to put a small bevel on the edges and clean it up. then painted the end of the stud black so it doesn't rust.
The cut off wheels are dirt cheap at harbor freight.

The inflateable spare tire wheel will not clear the rear calipers without at least a 15mm-18mm spacer so I left enough stud length to still use it with a spacer if needed.
Old 06-26-2010, 09:41 PM
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Arrow Less than half

Quote:
Originally Posted by A930Rocket View Post
What are the stock lengths to compare? I thought 100mm was stock?
From the CAT of my 83, 45mm
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Old 06-27-2010, 12:36 AM
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What studs are you guys using? The 100mm ones I have are hardened steel and not easy to cut down.
Why cut them down when you can replace with the correct size? Stick the long ones in a box as you may need them down the road.

Yes the e-brake pads/shoes.
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Old 06-27-2010, 03:54 AM
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Quote:
Originally Posted by gumba View Post
I run a steel nut down the stud to where I want to cut it. Cut it with a cut off wheel, round it with a small disk sander, then back the nut off to clean up the threads.
That looks like the answer... thanks - I'll report back when done.
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Old 06-27-2010, 04:32 AM
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Quote:
Originally Posted by JFairman View Post

The inflateable spare tire wheel will not clear the rear calipers without at least a 15mm-18mm spacer so I left enough stud length to still use it with a spacer if needed.
I didn't consider this... I don't carry my spare or jack; however. I've got a small compressor and green slime. If that doesn't work, there's always AAA.

Thanks, Shannon
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Old 06-27-2010, 04:35 AM
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I only removed the e brake spanner and cut some of the backing plate tin (if still there). I left the e brake pads and everything else in place. This was to replace the stock studs with the 100mm ones.
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Old 06-27-2010, 05:55 AM
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Question Hawk Saw Anyone???

Quote:
Originally Posted by RarlyL8 View Post
What studs are you guys using? The 100mm ones I have are hardened steel and not easy to cut down....
+1... Sawing time X 10 studs... I can find a lot better thing to do with my time for that cost.
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Old 06-27-2010, 04:17 PM
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Quote:
Originally Posted by gumba View Post
I only removed the e brake spanner and cut some of the backing plate tin (if still there). I left the e brake pads and everything else in place. This was to replace the stock studs with the 100mm ones.
Now, that's an idea... I'll take a look at that possibility... I just don't know what the smallest size spacer I can get away with...

I test mounted the rim/tire without a spacer or the brake callipers today [needed to remove the callipers so the rim wouldn't hit]. And, noticed that the tire just barely connects with a nut on the suspension plate coming from the torsion bar.

I'm not sure if a 7mm spacer will get me far enough away from the bolt??

So, the plan is to purchase a 7mm spacer [cheap] and give it a try. I don't have to cut the wheel studs initially. So, I can drive around and check for rubbing.

If I think it's a problem, I'll go with 12mm spacer on the LS. And, because of my 7mm variance from LS to RS, I'll go with a 12mm + 7mm spacer [19mm TTL] on the RS.

By removing the stock spacers [at 28mm], worst case I'll gain 16mm on the LS and 9mm on the RS. And, best case, I'll gain 21mm on the LS and 16mm on the RS.
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Old 06-27-2010, 04:45 PM
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You could use some washers to mount the tire and space it for clearance, but DON'T drive on it. Then measure the number if washers.
Old 06-27-2010, 04:49 PM
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Quote:
Originally Posted by A930Rocket View Post
You could use some washers to mount the tire and space it for clearance, but DON'T drive on it. Then measure the number if washers.
Now, that's a lot cheaper than a 7mm spacer... And, much more scale-able, too.

Thanks, I'll P/U some washers tomorrow!
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Old 06-27-2010, 05:00 PM
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