OZ split rim bolts

OZ split rim bolts

Author
Discussion

Andy_J_G

Original Poster:

323 posts

208 months

Friday 17th October 2014
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Does anyone know where I can get new stainless steel nuts and bolts for my wheels, and what size they are?
Thanks

FlipFlopGriff

7,144 posts

246 months

Friday 17th October 2014
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I got my titanium ones through Hans on here - I could try and spell his surname but would fail miserably - begins with a D.
His profile name is hansdaal
hamada@planet.nl
FFG

Andy_J_G

Original Poster:

323 posts

208 months

Friday 17th October 2014
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Thanks I will try to contact him

Russell Mc

573 posts

150 months

Friday 17th October 2014
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Ebay Germany

Andy_J_G

Original Poster:

323 posts

208 months

Saturday 18th October 2014
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Any idea of size, as i do not have access to wheels at the moment, i have seen m7 x 32mm and m7 x 24mm on ebay

Edited by Andy_J_G on Saturday 18th October 12:00

PeteGriff

1,262 posts

156 months

Sunday 19th October 2014
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Hi Andy, if you can't source them easily let me know and I will try my fixing suppliers! I will need the size, thread, head type etc. All the best, Pete

Andy_J_G

Original Poster:

323 posts

208 months

Sunday 19th October 2014
quotequote all
PeteGriff said:
Hi Andy, if you can't source them easily let me know and I will try my fixing suppliers! I will need the size, thread, head type etc. All the best, Pete
Thanks for the offer Pete, I will see how I get on and let you know.

Russell Mc

573 posts

150 months

Sunday 19th October 2014
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M7 x 24mm is what you want.
Remember your original bolts will have a 10 point head rather than the normal 12. I changed mine to 12 point when I rebuilt my wheels

Andy_J_G

Original Poster:

323 posts

208 months

Sunday 19th October 2014
quotequote all
Russell Mc said:
M7 x 24mm is what you want.
Remember your original bolts will have a 10 point head rather than the normal 12. I changed mine to 12 point when I rebuilt my wheels
Thanks Russel, just one last thing, how many bolts on each wheel?
Thanks

Russell Mc

573 posts

150 months

Sunday 19th October 2014
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30 on each wheel.

Heres when I refurbed mine a few years ago if you've not seen it already.

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

Best of luck with it

ThePrisoner

1,055 posts

207 months

Monday 20th October 2014
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Russell Mc said:
30 on each wheel.

Heres when I refurbed mine a few years ago if you've not seen it already.

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

Best of luck with it
Russ

Your wheels still look fantastic. smile



PeteGriff

1,262 posts

156 months

Monday 20th October 2014
quotequote all
Russell Mc said:
M7 x 24mm is what you want.
Remember your original bolts will have a 10 point head rather than the normal 12. I changed mine to 12 point when I rebuilt my wheels
Hi Ian, just to add my 2 penneth again, be mindful that you should be careful using stainless fixings in hi-tensile/stress applications. I believe the originals of these were chromed steel? What you would look for is M7 x 24 flanged torx head, M7 though is an oddball size! Regards, Pete

Russell Mc

573 posts

150 months

Monday 20th October 2014
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Pete the bolts aren't tight not load bearing. They just hold the rim onto the already snug fitting shoulder of the wheel. Think I did mine up to 22-24 ft/lbs. I would add though buy specific split rim bolts as they are designed for the job and are easily available.

Edited by Russell Mc on Monday 20th October 20:59

citizen smith

743 posts

180 months

Tuesday 21st October 2014
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Hello Andy,

Another solution is to get your bolts re-chromed/plated at somewhere like DERBY PLATING. Not to expensive, but you maintain the original bolts.

MikeE

1,826 posts

283 months

Tuesday 21st October 2014
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citizen smith said:
Hello Andy,

Another solution is to get your bolts re-chromed/plated at somewhere like DERBY PLATING. Not to expensive, but you maintain the original bolts.
I presume split rims have nyloc nuts? If so I'd definitely replace these, having had a magnesium alloy split rim (on a 280bhp Caterham) collapse on me half way through Craner curves at Donnington I'd suggest this is not an area to scrimp on!

The reason it collapse (apart from trying to deal with 280bhp in a 515kg car running slicks!!) was because the bolts were too short and the nylocs didn't have enough thread to get hold of, the previous owner had likely replaced them with a different spec from standard.

PeteGriff

1,262 posts

156 months

Tuesday 21st October 2014
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MikeE said:
I presume split rims have nyloc nuts? If so I'd definitely replace these, having had a magnesium alloy split rim (on a 280bhp Caterham) collapse on me half way through Craner curves at Donnington I'd suggest this is not an area to scrimp on!

The reason it collapse (apart from trying to deal with 280bhp in a 515kg car running slicks!!) was because the bolts were too short and the nylocs didn't have enough thread to get hold of, the previous owner had likely replaced them with a different spec from standard.
A very good point made by Mike. The number of times I have seen installations that use nyloc locking nuts and the bolt does not protrude through the end! If there are no threads protruding it is likely that the locking action will not be effective, hence loosening of nut with use! I would be more inclined to use plain nuts and locking washers on a job like this! Pete

Griffer

267 posts

281 months

Tuesday 21st October 2014
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The original O.Z. bolts are 12.9 rating,clearly marked on the bolt head flange. I chose to have my originals plated as I figured that they were specified by O.Z. for good reason. Most aftermarket available (Titanium excepted) I could find at the time were rated at 8.8. Google 12.9 bolt rating and it explains all the diferences.