[DeTomaso] What size are the starter bolts

Thomas Tornblom Thomas.Tornblom at hax.se
Wed Sep 14 09:38:11 EDT 2011


2011-09-14 15:12, MikeLDrew at aol.com skrev:
>
> In a message dated 9/14/11 5 47 15, mbefthomas at comcast.net writes:
>
>
>> I have one of the high torque mini-starters that has the upper bolt hole
>> too
>> close to the body.  What are the starter bolt dimensions?  I'd like to get
>> a
>> pair of ARP bolts that take a smaller socket size so I can get the socket
>> on
>> there.
>>
>
> That won't work--nobody makes small-head bolts in that size.   Besides,
> bolts shouldn't be used in that application.   Use STUDS.
>
> The studs are M10 x 1.5; the stock studs are too short to be used with
> aftermarket starters, but replacements are available at any good Ace hardware
> store for about $3.50 each.   That size normally uses a nut with a 17mm head,
> but I was able to find flanged, serrated nuts with a 15mm head at
> McMaster-Carr.   Might as well just go to their website and order everything from
> them.

Why not get the flanged small head 12-pt head M10x1.5 nuts from ARP?

http://www.summitracing.com/parts/ARP-300-8355/

>
> http://www.mcmaster.com
>
> 94920A600 is the part number for the nuts, they are $5.71 for a package of
> 10.   You can use the leftovers on your muffler hangars if you want. :>)
>
> 91059A561 is the part number for the studs; the catalog says:
>
> Studs are threaded for a nut on one end and threaded (with self-locking
> friction-fit threads) for insertion into a threaded hole on the other. Also
> known as milled and tap-end studs, they have a Class 5 thread fit on the tap
> end (metric have Class SK6) and a Class 2A thread fit on the nut end (metric
> have Class 6g). Matching hex nuts are also available.
> Metric plain steel studs are made from Class 8.8 medium-strength steel.
> They have a minimum Rockwell hardness of C22 and tensile strength of 116,000
> psi.
>
> The studs come in four different lengths; the one listed above is the
> appropriate length for the Pantera application, with 12mm of threads inserted
> into the bellhousing, 24mm extending for use with the nut, and an overall
> length of 52mm.   They are $2.24 each.
>
> Bill--please add this info to the database if it's not already there.
> Thanks!
>
> Mike



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