BADASS of New England

An automobile club for the enthusiast who enjoys the last of the big GM cars. The rear wheel drive B and D bodys. Chevrolet Impala SS, Caprice, 9C1, Buick Roadmaster, Oldsmobile Custom Cruiser, Cadillac Fleetwood
 
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 N97 Bolt

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Cadet57



Posts : 4478
Join date : 2010-03-14
Age : 29
Location : Chicopee, MA

PostSubject: N97 Bolt   Sat Feb 18, 2012 4:43 pm

Does anyone know what size the bolts are that hold the N97 caps to the rim? Are they still made? I've lost a few so I need to replace those/ like to have a few extras.
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Tomz9C1



Posts : 1487
Join date : 2009-01-21
Age : 54
Location : Rumford, Maine

PostSubject: Re: N97 Bolt   Sat Feb 18, 2012 5:01 pm

Bet ya Billy Mac knows Arrow Google Search is your friend.
http://parts.nalleygmc.com/showAssembly.aspx?ukey_product=2539743&ukey_assembly=367457
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Guest
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PostSubject: Re: N97 Bolt   Sat Feb 18, 2012 5:24 pm

Tomz9C1 wrote:
Bet ya Billy Mac knows Arrow Google Search is your friend.
http://parts.nalleygmc.com/showAssembly.aspx?ukey_product=2539743&ukey_assembly=367457
I wish I did. I would take one off, hit an Ace hardware store and buy 12 new stainless bolts, and a small tube of threadlock.
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toomanytoyz
Club President


Posts : 6871
Join date : 2009-01-20
Age : 40
Location : East Hampstead, NH USA

PostSubject: Re: N97 Bolt   Sat Feb 18, 2012 5:31 pm

I never had luck getting the right thread on those. I got metrics and standards when I had my red winter wheels, and neither were "right" but both would work. Same with the ones on Big Ugly. Weird.

I wanna say m8x1.25 or 5/16-20 work, but don't hold me to it.

_________________
Bill "The Verb" Crovo - Resident Car Slut & Unicorn Hunter

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Tomz9C1



Posts : 1487
Join date : 2009-01-21
Age : 54
Location : Rumford, Maine

PostSubject: Re: N97 Bolt   Sat Feb 18, 2012 7:39 pm

Tried to order 12 (figure that would hold me for a while) of them but there is a min order of $35
http://www.gciron.com/ShoppingCart.asp
Who wants to get in on a group purchase? We would have to order 47 of them to break us over $35. I can ship it to one of the Bill's if that is ok?
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PostSubject: Re: N97 Bolt   Sat Feb 18, 2012 7:49 pm

Tomz9C1 wrote:
Tried to order 12 (figure that would hold me for a while) of them but there is a min order of $35
http://www.gciron.com/ShoppingCart.asp
Who wants to get in on a group purchase? We would have to order 47 of them to break us over $35. I can ship it to one of the Bill's if that is ok?
Your link has nothing in the shopping cart, and you can use my address to send them to if you like. Wink
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MASShole9C1



Posts : 4219
Join date : 2009-12-16

PostSubject: Re: N97 Bolt   Sat Feb 18, 2012 7:50 pm

Cheap here on eBay . Buy it now, free shipping for all 12
http://www.ebay.com/itm/12-Caprice-9C1-Center-Cap-Bolts-1994-96-Police-2000-10-/390348621212?hash=item5ae297459c&item=390348621212&pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr
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sdstick



Posts : 4282
Join date : 2009-03-20
Location : Revere, MA

PostSubject: Re: N97 Bolt   Sat Feb 18, 2012 10:37 pm

toomanytoyz wrote:
I never had luck getting the right thread on those. I got metrics and standards when I had my red winter wheels, and neither were "right" but both would work. Same with the ones on Big Ugly. Weird.

I wanna say m8x1.25 or 5/16-20 work, but don't hold me to it.

I think this^^^
I remember MDZ nailed the bolts but I cant find the thread
I did try 5/16-18 (also tried tapping) that was wrong, close but wrong.
For some reason, I think he said it could be either (metric or std)?
So that puts Crovo's guess right on the money
Except I think its 5/16-24
( I cant talk metric need to make a chart 4 myself sometime)

_________________
Steve


96BBB 28K 3.42 Bolt-ons
95BBB 100K 3.73 383 New DD...already broke fixt the 4L60E twice
95 Black WB4 Hole...ee...grail
96 Black WB4 No holes in this
95BBB 189K 3.08 Old DD Stolen...by Matt. Cool
Whine..eee...Silver LS6
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Machine-De-Zine



Posts : 512
Join date : 2010-11-16
Age : 60
Location : Wrentham

PostSubject: Re: N97 Bolt   Sun Feb 19, 2012 6:42 am

sdstick wrote:
toomanytoyz wrote:
I never had luck getting the right thread on those. I got metrics and standards when I had my red winter wheels, and neither were "right" but both would work. Same with the ones on Big Ugly. Weird.

I wanna say m8x1.25 or 5/16-20 work, but don't hold me to it.

I think this^^^
I remember MDZ nailed the bolts but I cant find the thread
I did try 5/16-18 (also tried tapping) that was wrong, close but wrong.
For some reason, I think he said it could be either (metric or std)?
So that puts Crovo's guess right on the money
Except I think its 5/16-24
( I cant talk metric need to make a chart 4 myself sometime)

Yeppers, I forgot about that post.
http://badass-of-ne.forumotion.com/t2878-9c1-center-caps#32643

SdStick is correct, there are but two std (common) USA 5/16 Dia. bolt T.P.I.s (threads per inch)
[5/16"/18 (coarse)] - & - [5/16"/24 (fine)] If there IS a 5/16"/20, it is a special purpose thread pitch.

Every N97 I've ever seen was 8mm 1.25 mm/thread pitch.
The ARP #s are [761-1001 (6 point)] - & - [771-1001 (12 point wrenching head)] 10 mm wrench, & both are 20mm UHL (under head length).

For ref: [8mm = 0.3149062992125"] - and - [5/16" = 7.9375mm] - - - pretty close actually.
Its the T.P.I. mismatch that will cause the binding and/or seizing for the wrongly sized installed threaded bolt.

I got these (NOS) bolts (linked below) from Mike at Hamilton Chevrolet. Excellent GM parts source!
http://www.ebay.com/itm/12-Caprice-9C1-Center-Cap-Bolts-1994-96-Police-2000-10-/390348621212?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item5ae297459c#ht_753wt_1165

Two important things to keep in mind:
1) - Stock (OEM) caps are reasonably sturdy die cast metal and don't crush that easily when the three bolts are tightened.
However, the aftermarket plastic "knock-offs" are of a soft plastic and WILL crush when great care is NOT taken when tightening the screws!
Use red lock tight when the exact bolt preload is reached, otherwise the low preload will allow the nice ARP bolts to fall out.

2) - You MUST be careful of the under-head bolt length, because the threaded bolt must NOT be too long, and protrude into the flat mounting pad area on your brake disc, drum, hub etc.
If you are not careful, the wheel will not seat properly when mounted to the car.

Note: I think the original bolts were 3/4" long, but you will have to double check that. 19mm is very close to 3/4" and 0.750" is actually 19.05mm.
The above ARP part #s will be nearly 1 mm longer than OEM.
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SPCS



Posts : 122
Join date : 2012-02-17
Age : 39
Location : Stuttgart, Germany

PostSubject: Re: N97 Bolt   Sun Feb 19, 2012 9:19 am

GM lists the bolts as M8x1,25x21
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http://www.oldschoolcustoms.de
Cadet57



Posts : 4478
Join date : 2010-03-14
Age : 29
Location : Chicopee, MA

PostSubject: Re: N97 Bolt   Sun Feb 19, 2012 9:45 am

Tomz9C1 wrote:
Tried to order 12 (figure that would hold me for a while) of them but there is a min order of $35
http://www.gciron.com/ShoppingCart.asp
Who wants to get in on a group purchase? We would have to order 47 of them to break us over $35. I can ship it to one of the Bill's if that is ok?

Well, I'd be down for 24. But your link doesnt show a price each. I figure I'll get a nice new set for my 15x8's and my bro's N97's if they're cheap enough.

Machine-De-Zine wrote:
.

Thanks as always lol!

SPCS wrote:
GM lists the bolts as M8x1,25x21

Danke Arrow
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MASShole9C1



Posts : 4219
Join date : 2009-12-16

PostSubject: Re: N97 Bolt   Sun Feb 19, 2012 9:55 am

Same eBay link I posted.
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Cadet57



Posts : 4478
Join date : 2010-03-14
Age : 29
Location : Chicopee, MA

PostSubject: Re: N97 Bolt   Sun Feb 19, 2012 9:57 am

MASShole9C1 wrote:
Same eBay link I posted.

$29 for a set of 12?
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MASShole9C1



Posts : 4219
Join date : 2009-12-16

PostSubject: Re: N97 Bolt   Sun Feb 19, 2012 10:11 am

Cadet57 wrote:
MASShole9C1 wrote:
Same eBay link I posted.

$29 for a set of 12?

Yea. Whats wrong with paying for OEM? Call me stupid, but I'd have done it already. Took out the guess work for me.
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1984twodoor



Posts : 4059
Join date : 2010-03-30
Age : 23
Location : Wilmington/Wakefield/Andover

PostSubject: Re: N97 Bolt   Sun Feb 19, 2012 10:17 am

MASShole9C1 wrote:
Cadet57 wrote:
MASShole9C1 wrote:
Same eBay link I posted.

$29 for a set of 12?

Yea. Whats wrong with paying for OEM? Call me stupid, but I'd have done it already. Took out the guess work for me.

Arrow The only problem for me is I can never find OEM for a box
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MASShole9C1



Posts : 4219
Join date : 2009-12-16

PostSubject: Re: N97 Bolt   Sun Feb 19, 2012 10:21 am

Very true. If you do its $$$. But Mostly unfounded. So, swap to the LT1 and frame and all for ease of availability lol. J/K
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Tomz9C1



Posts : 1487
Join date : 2009-01-21
Age : 54
Location : Rumford, Maine

PostSubject: Re: N97 Bolt   Sun Feb 19, 2012 11:05 am

MASShole9C1 wrote:
Cheap here on eBay . Buy it now, free shipping for all 12
http://www.ebay.com/itm/12-Caprice-9C1-Center-Cap-Bolts-1994-96-Police-2000-10-/390348621212?hash=item5ae297459c&item=390348621212&pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr

.76 Cents / Bolt x 48 = $36.48 + shipping. Beats the heck out of the e-bay I would think?
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sdstick



Posts : 4282
Join date : 2009-03-20
Location : Revere, MA

PostSubject: Re: N97 Bolt   Sun Feb 19, 2012 11:46 am

Tom,
If you do that count me in for 16 min (more if you need me to)

_________________
Steve


96BBB 28K 3.42 Bolt-ons
95BBB 100K 3.73 383 New DD...already broke fixt the 4L60E twice
95 Black WB4 Hole...ee...grail
96 Black WB4 No holes in this
95BBB 189K 3.08 Old DD Stolen...by Matt. Cool
Whine..eee...Silver LS6
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1984twodoor



Posts : 4059
Join date : 2010-03-30
Age : 23
Location : Wilmington/Wakefield/Andover

PostSubject: Re: N97 Bolt   Sun Feb 19, 2012 11:49 am

MASShole9C1 wrote:
Very true. If you do its $$$. But Mostly unfounded. So, swap to the LT1 and frame and all for ease of availability lol. J/K

Right because I'm having sooooo much trouble finding small block chevy parts..... scratch



Razz Nice try! Maybe on the next caprice Twisted Evil
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Cadet57



Posts : 4478
Join date : 2010-03-14
Age : 29
Location : Chicopee, MA

PostSubject: Re: N97 Bolt   Sun Feb 19, 2012 11:50 am

sdstick wrote:
Tom,
If you do that count me in for 16 min (more if you need me to)

Ill be down for 24. Arrow
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Cadet57



Posts : 4478
Join date : 2010-03-14
Age : 29
Location : Chicopee, MA

PostSubject: Re: N97 Bolt   Sun Mar 11, 2012 7:18 pm

Tom, you still going to order these? If not lmk so I can plan accordingly. Thanks!
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