Re: [Amc-list] 195.6 OHV head bolt dimensions

[Tom Jennings <tomj@xxxxxxx>]

I gotta go to work (30 min ago :-) but maybe tonight -- Dave, yell if
you need this -- I can put the head on the bench and drop all the bolts
and in look at the bottom for protrusion. That should tell us 100%.


On Tue, 1 Apr 2008, Frank Swygert wrote:

> Great! The 5 x 3-5/8" definitely go under the valve cover, and the two studs
> go on each end of the left side (front and back, not through the intake
> plate). I'm pretty sure the 6 that go through the intake plate are 5". The
> 4.5" *might* have me stumped! It's been a while since I pulled a 196 head, but
> I *think* the front and rear bolts on the right side (under valve cover) are
> longer than the center 5. If so they should be the 4-1/2" bolts. Easy to check
> -- if the area where the bolt goes through is taller than the center 5 holes
> then it needs to be longer, and I'm pretty sure it is -- provided memory
> serves me. No clear photo in the TSM. That just leaves the odd 4-1/4" bolt
> "hanging" -- I bet it was a substitute for a missing 5". I'm 99% sure the 6
> through the intake are the same length and the 5 in the center under the valve
> cover are the same length.
>
> Tom Jennings wrote:
> > OK I screwed up royally on the bolts. Thanks for the poke, Frank!
> >
> > A month or so ago I pulled a head from a 1963 classic 195.6. The head
> > had definitely been off and rebuilt once, so it may not be as AMC
> > intended. I saved all the bolts and everything. Here's what I have:
> >
> > 1 - 4-1/4" long
> > 4 - 5"
> > 2 - 4-1/2"
> > 2 - 4-1/2" stud
> > 5 - 3-5/8" (could be 3-1/2, greasy bolt clean fingers didn't pull washer
> > off)
> >
> > otherwise as stated (head, thread, etc). The threaded portion
> > of the short bolts is shorter.
> >
> > I know the motor in my AMerican didn't have this hardware store
> > assortment. There was long, and short.
> >
> > 45 years is a long time....
> >
> >
> >
> >
> >
> > On Tue, 1 Apr 2008, Frank Swygert wrote:
> >
> >
> > > Tom, did you just measure the bolt from out of the valve cover, the one
> > > that
> > > holds the intake down? 5" below the head sounds right for those, but I
> > > think
> > > the ones under the valve cover are the short ones (3-3/4" below head to
> > > end) I
> > > mentioned in my previous post. I have a couple head bolts here that I'm
> > > 90%
> > > sure came from a 196, under the valve cover, but I might be mistaken. I'm
> > > 99%
> > > sure there are two different lengths though. I was thinking the longer
> > > ones
> > > were at least 4-1/2"-4-3/4" but wasn't sure, 5" sounds about right for
> > > them
> > > (5" from bottom of head to end, would be roughly 5-1/2" overall from end
> > > to
> > > end -- the short ones would be about 4-1/4" total).
> > > 7/16"x14 tpi is standard US coarse threads -- easy to find! Wrench size
> > > really
> > > doesn't matter, and washers can be used instead of the oversize shoulders.
> > > (just here for Dave's info and your comment if you disagree).
> > > -------------
> > > Date: Mon, 31 Mar 2008 21:39:53 -0700 (PDT)
> > > From: Tom Jennings <tomj@xxxxxxx>
> > >
> > > On Mon, 31 Mar 2008, d stohler wrote:
> > >
> > > > so, does anyone know off top of their head the size
> > > > bolt for the 196 head? my casper is sitting 45 miles
> > > > the WRONG way, and i am going to town in the morning.
> > > >
> > > OK Dave, you owe me a beer/coffee/poison of my choice:  :-)
> > > grade 8
> > > 5/8" wrench size, plain hex head
> > > 5" overall (under head to end)
> > > 7/16"-14 thread, .390" shaft
> > > threaded portion, only last 1-1/8"
> > > oversized shoulder, .434", top 1/2" of shaft under head
> > >
> > >
> > >
> >
> >
>
>
>
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