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Old 11-08-2011, 11:48 PM   #1 (permalink)
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Default starter upper bolt-size length?

Hi guys,

I just finished rebuilding my tranny and putting it back on now. However, it seems I lost the starter top bolt.

Do you now the size, thread and length of it?

Is it just a bolt that threads in or a bolt and a nut?

I think it's a bolt and a nut but I'm not positive?

All I remember is that I removed it using a 12mm box wrench.

Thanks,
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1990 Geo Tracker LSI, 1.6L, 8v, manual tranny, 4x4, 2dr, soft top.

Last edited by trackerER; 11-09-2011 at 02:12 AM.
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Old 11-09-2011, 02:15 AM   #2 (permalink)
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OK. I just did a little search and I think the bolt is supposed to be JIS 8mm bolt, 1.25 pitch and 12.25mm head. I can't remember the length though.

Also, I'm still not sure whether it was a bolt or a bolt-and-nut.

Thanks,
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1990 Geo Tracker LSI, 1.6L, 8v, manual tranny, 4x4, 2dr, soft top.
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Old 11-09-2011, 08:34 AM   #3 (permalink)
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the bell housing is threaded for that bolt.
so there is no nut.
it be same diameter as lower bolt (measure it) (got caliper, no , why not?)
and has same ISO thread pitch, measure it.
that gets you to one mystery length.

you should buy a metric pitch gage for $1 and add it to your shop tool box.
and a cheap caliper so you can measure any bolt.

now that you know the diameter and pitch, all that remains is length
i take a coffee swizzle stick, jam it in the hole.
i then press thumb into stick at flange.
i extract the swizzle , lay it against, my ruler. all X inches ,the
add starter flange thickness Y
X + Y = Z
i multiply Z times ,25.5 and bingo , metric. OMG i measured length.
i then subract 2-3mm from my reading and buy that bolt.
if really flush with cash(LOL) I buy 2sizes, above calc. and next size down.

there, taught you how to fish, no fish to give
btw, the suzuki docs dont show sizes.
and does sell the bolt. i have pn. but im sure you dont want it.

Last edited by fix-kick; 11-09-2011 at 08:41 AM.
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Old 11-09-2011, 08:38 AM   #4 (permalink)
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caliper 1a
measure diameter
.314" about.
(.314 x 25.4 = 8mm
now you can discover the size of all ISO metric bolts. (use a screw that fits the unknown nut to find nut sizes )

pitch is even easier. pitch is even easier.

shop skills.

most parts are 6,8,10,12mm
some are fine pitch.
the pitch gauge , solves the hard part. ( SAE bolts are much more easy, TPS, threads per inch is so easy to measure)
and length is childs play. measure it.
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