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Cosworth GRP4 studs????

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Old 26-02-2006 | 10:07 AM
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Default Cosworth GRP4 studs????

Hello peeps Quick question for ya all.....ive recently picked up my old skool BBS 8.25 & 8.5j 17" splitrims......the chap said im gonna need grp4 studs...after having a closer look I see what he means as in the bolt holes are much deeper...ie approx 20mm from hub seat to lowest point of nut taper seat.....so where can I can some?? Not too sure what the grp4 spec actually is, is it just a longer stud, or more to it than that??

Cheers in advance,

Stu
Old 26-02-2006 | 10:56 AM
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If they are the same as GRP-A which I beleive they are you will need either grp-a/4 studs or you can just buy a set of conversion nuts like these:-


The conversion nuts are the better option as you bascially just fit them the only down side is you can't get a locking nut

If you go for the stud conversion they are bigger studs in terms of width so need to replace the studs in your hubs with grpa/4 studs plus your have to have your brakes discs/bells drilled out to the same size spec.. shit loads of hassle, plus side is you can have a locking nut

Stud looks like this
Old 26-02-2006 | 11:43 AM
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Who sells those studs in that pic Paul,i need the ones with 63mm thread as i'm running with a spacer.
Old 26-02-2006 | 11:44 AM
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Burtons I believe
Old 26-02-2006 | 12:02 PM
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Tried Burton's,no joy.
Old 26-02-2006 | 12:06 PM
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if you right hand click the pic its from the burtons web site so they must sell them?
Old 26-02-2006 | 12:11 PM
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https://www.burtonpower.com/dets_pro...=97&sTxt=rd331

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Old 26-02-2006 | 01:06 PM
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Those studs are exactly the same size as mine but Burton's reckon they don't do the longer ones.Got different wheels front and back at the moment as i've drilled the front bells only to find the wheel was hanging on by 2 threads.
Old 26-02-2006 | 02:03 PM
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Try emailing this guy he was well helpful with finding me bits http://www.ac-carparts.com/
Old 26-02-2006 | 09:20 PM
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Cheers for the info chap...the longer reach nuts look like being my best option along with 4 wheel clamps lol Where can I get the nuts from???

Cheers,
Stu
Old 26-02-2006 | 09:28 PM
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I got mine from the link above http://www.ac-carparts.com/
Old 26-02-2006 | 09:31 PM
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Nice1 cheers yoof Just had a quick look at that link, not much on the website but have jotted down the contact details and will try em tomorrow


Stu.
Old 26-02-2006 | 09:53 PM
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They are called Group-A sleeved nuts if that helps when you order them
Old 26-02-2006 | 09:59 PM
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So even if they are 'grpA', they still use the same thread size and pitch as standard Ford o.e? Im well chuffed if its just a case of buying said nuts to get my new rims bolted up
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