Re: [Amc-list] 196 head bolts

[Frank Swygert <farna@xxxxxxx>]

Of all the warped 196 heads I've seen, I've never even HEARD of a warped block. That's a huge chunk of iron, a bare 196 six block easily weighs as much as a 70s Ford 302 V-8 block (I know that from experience -- had to move the 302 block from bro's engine stand to build a 196 OHV once). I've had to have a couple heads trued, and that usually fixes sealing problems.

Okay, I just thought of one exception -- the aluminum 196 OHV. It's pretty easy to warp the cylinders/block on that one. The head bolts need to be a little loose when it's boiled over 2-3 times, or once but really good! The cast iron cylinder liners are siamesed in pairs, then cast into the die-cast block at the bottom only. The water jackets are entirely open at the top, the only support is contact with the head. Compromise that, run it hot, and the cylinders can warp out of place. The liners were fixed in the die-casting mold then the aluminum poured in. 

--------------
Date: Tue, 01 Apr 2008 14:36:50 +0000
From: Wrambler242@xxxxxxxxxxx

That's an old school casting.
I'd be amazed if it won't take 30 thou shave with no problem.
The problem is knowing how many times in it's life it's been shaved???

I'd go to  a good shop and see about getting it milled flat.
Your proly not going to see a big gain from milling more than needed.
I would find someone to truly MILL it though...

The other thing in this equation is the deck.
if it's screwed, your screwed.


-- 
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
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