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Old 12-14-2007, 10:47 PM   #1
ermit71
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Default What size spacer?

What size spacer would I need to fit 87 780 wheels, with 25mm offset 6X15" 15 spoke on the front of a 1990 245?

Here are some pictures of the backside of the wheels. The funny silvery circular markings are where the caliper rubbed the wheel.

Thanks
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Last edited by ermit71; 12-15-2007 at 12:49 AM.. Reason: posted pictures
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Old 12-14-2007, 10:52 PM   #2
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none, bolt on
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Old 12-14-2007, 10:57 PM   #3
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Tried that, took material off the back of the wheel.

My car did not want to move with the transmission in reverse foot off the brake and parking brake released. Took the wheels off and found the calipers were preventing the wheels from turning freely.

Its a non-abs car. I was very surprised at my inability to drive after the wheels swap, thought it was a bolt on as well.
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Old 12-15-2007, 02:17 AM   #4
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20mm spacers will make them look good, although 5mm autozone spacers should work.
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Old 12-15-2007, 02:28 AM   #5
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Fronts should bolt on fine methinks. That's weird they don't. Maybe someone did a brake swap on you whilst you were asleep. Get a pic of the caliper/wheel contact.

I've heard of rear brake clearance being an issue on occasion but not fronts. Time to bust out the dremel...
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Old 12-15-2007, 02:43 AM   #6
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Maybe if I just put enough kilometers of caliper grinding distance all would free up and then I could re-torque and do it all again. Could be fun just not too practical.

Had some dremel thoughts but am thinking of going the spacer route.

Pics of contact on the back of the wheel in the first post. Its too dark and I am flying at 6 am tomorrow for any more. Yay for 5 hrs of sleep.

Thanks for the info everybody and crazychopstick thanks for the laughs. I too had thoughts of a midnight caliper swap and tried to get hold of the previous owner but couldn't. BAH
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Old 12-15-2007, 02:46 AM   #7
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I meant a picture from beneath with the wheel bolted on. Anyways, have a nice flight!
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Old 12-15-2007, 08:24 AM   #8
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Sorry for the misunderstanding.

That would help shed some light on the situation wouldn't it.

Cheers
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Old 12-15-2007, 03:42 PM   #9
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The 240 front caliper sticks out right over the edge of the rotor hat as I recall. Does the caliper hit near the center hub of the wheel, or is it hitting the spokes further out from the center?

You could stack some washers on the studs and TEST FIT the wheel only, to see how much spacer is required. 1/4" or 5-6mm is about the limit on the stock studs, and that's pushing it. If it needs more than that, look for different wheels or longer studs with thicker spacers.
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Old 12-16-2007, 12:19 AM   #10
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It rubs right at the start of the spokes. I am hoping that it will only require up to 5mm worth of spacing. No I will not run the wheels with washers. If I am going to go ahead it will be with the proper materials.

Thanks for the tip towerymt
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Old 12-16-2007, 12:33 AM   #11
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Quote:
Originally Posted by ermit71 View Post
It rubs right at the start of the spokes. I am hoping that it will only require up to 5mm worth of spacing. No I will not run the wheels with washers. If I am going to go ahead it will be with the proper materials.

Thanks for the tip towerymt
Towery was only suggesting to do that as a method of measurement to determine what spacer thickness you need. He, and anyone else here would never suggest you use that method to correct your problem...
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Old 12-16-2007, 01:22 AM   #12
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I smelt what he was cooking. I appreciate the information and knowledge represented and shared by members of Turbobricks.

A compounding factor is I am 5000 km away from being able to physically apply suggestions

I am just trying to be clear due to suggestions in other threads recently. and to reiterate the fact that is not a recommended application of washers (which I think you just did).

I think (hope) we are in agreement here.
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Old 12-16-2007, 07:20 PM   #13
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I'm really interested in knowing where the rubbing is occuring. It might be the only wheel I know of that doesn't fit 2/7/9s.
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Old 12-16-2007, 07:25 PM   #14
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Quote:
Originally Posted by Crazychopstick View Post
I'm really interested in knowing where the rubbing is occuring. It might be the only wheel I know of that doesn't fit 2/7/9s.
LOOK AT THE PICTURES!!!!!!!!!!!!!! Showing the wheel installed on the car isn't going to show you anything. Looking at the spot where the metal is rubbed away in the pictures in the first post IS going to show you something.

It does fit 7s and 9s. Maybe not jumbo brakes, but maybe yes.

Looks like it'll fit with 5mm spacers.

Now, did they have any issues on the rear of the car? Or just the front?
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Old 12-16-2007, 11:53 PM   #15
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Rears were perfect. The front is the only place they were rubbing. Preventing the car from moving.
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Old 12-17-2007, 03:11 AM   #16
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Quote:
Originally Posted by klr142 View Post
LOOK AT THE PICTURES!!!!!!!!!!!!!! Showing the wheel installed on the car isn't going to show you anything. Looking at the spot where the metal is rubbed away in the pictures in the first post IS going to show you something.

It does fit 7s and 9s. Maybe not jumbo brakes, but maybe yes.

Looks like it'll fit with 5mm spacers.

Now, did they have any issues on the rear of the car? Or just the front?
Whoa. Calm down killer.

I just want to know what part of the caliper is rubbing on the wheel. I'd have trouble determining that from the pictures alrerady posted. It's not even my problem, I'd just like to know for information's sake.

I've made assumptions that most wheels were "2/7/9 compatitble" and would fit w/o problem, I never stated they wouldn't fit 7s and 9s.

Seriously Kyle, don't get so worked up.
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Old 12-17-2007, 11:15 AM   #17
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Sorry, I was not in a good mood with relations to posts on TB at the time. Still though, it's pretty easy to tell what part of the caliper sits right next to the hub. A picture isn't going to be able to portray very easily where the contact is.

And by saying "It might be the only wheel I know of that doesn't fit 2/7/9s." Is the same as saying that it might not fit 7/9 series cars, as well as 2 series cars.
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Old 12-17-2007, 06:00 PM   #18
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The caliper was rubbing the wheel about 5-10mm from the top edge. I hope this is deciferable.
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Old 03-01-2021, 11:57 AM   #19
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And how did you solve this? Adjust the calipers? Or add the spacer.
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Old 03-01-2021, 12:08 PM   #20
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3mm spacer
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Old 03-01-2021, 01:03 PM   #21
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15mm would work too.
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Old 03-01-2021, 11:10 PM   #22
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Quote:
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And how did you solve this? Adjust the calipers? Or add the spacer.
I bought 5mm spacers. Then sold the wheels and spacers to KLR142

I would imagine as Redwood suggested 3mm working. He knows.
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Old 03-01-2021, 11:12 PM   #23
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Quote:
Originally Posted by blkaplan View Post
15mm would work too.
But not with stock studs.

Quote:
Originally Posted by ermit71 View Post
I bought 5mm spacers. Then sold the wheels and spacers to KLR142

I would imagine as Redwood suggested 3mm working. He knows.
5mm spacers on stock studs with alloys is pushing the limit of proper thread engagement.

Yes I've run the 15 spoke 780 wheels on a late 240 [vented calipers] with those 3mm spacers I linked to.
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Old 03-02-2021, 12:04 PM   #24
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Quote:
Originally Posted by Redwood Chair View Post
But not with stock studs.



5mm spacers on stock studs with alloys is pushing the limit of proper thread engagement.

Yes I've run the 15 spoke 780 wheels on a late 240 [vented calipers] with those 3mm spacers I linked to.
You are correct. With the 5mm spacers the thread engagement is on the border. I think I had 6 turns before full tight. Also, with the alloy wheel nuts the stud was very inset. It looked very disconcerting. I wasn't comfortable running them. Hence, why I sold them.

3mm spacers would have allowed more thread engagement and an increased confidence/reality in the wheels staying on while driving.

Thanks Ken
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Old 03-02-2021, 12:42 PM   #25
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Ya it puts the et back at 22mm which is good for a 240 as well.
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