Hello Dan,
I am mostly a lurker, but, I have been there and done this. The archive might
tell you a lot about this, but here are the high points:
1. All the nuts can be devilish, but the two outside studs are the worst (I
broke the front one and ended up pulling the engine and taking it to a machine
shop). If the other one balks, consider splitting the nut with a Dremel tool.
The manifolds will separate easily, but obviously there are lots of other
connections that you might want to remove or cover, especially if you're going
to
be in there with a torch.
2. It may be possible to use heat to loosen the broken stud. Also you might
be able to weld a nut onto the stub end and then turn that while heating the
surrounding area of the head. I did this on a Volvo and it worked pretty good.
I used a Mapp Gas/Oxygen torch. Propane alone doesn't get it hot enough sez
the machine shop guy.
3. The inner, longer, lower nuts are hard to get a purchase on. It can be
done with an open-end wrench, but you will need a pair of gloves and a full
supply of Anglo-Saxon oaths, similar to the ones you probably used when the
stud
broke.
4. Replace all the studs and nuts with proper new ones and re-installation
will go much better. New gaskets, of course. Proper torquing and maybe some of
that hi-temp copper gasket sealer will help avoid vacuum leaks.
Have fun,
Tom Burke
80 Spit
In a message dated 6/25/2003 1:05:17 PM Eastern Daylight Time,
danvon@scripps.edu writes:
> Hi listers.
>
> I may be morphing into a D%*)# Present Owner, and am hoping that
> someone can help. I set out to install the carb heat shield on my
> 1500 (a 76 CA spec model) which appeared to involve only pulling a
> couple of bolts on the manifold and then adding the shield. Well, of
> course, nothing is that easy, is it? Long story short, I now have a
> broken bolt in the manifold (as far as i can tell these go through the
> intake manifold and are threaded in the exhaust manifold) AND as a
> special bonus, a broken screw extractor in the stub of the bolt. As
> you can imagine, I really can't get at that now to do anything about it.
>
> so it looks like the manifold(s) are coming off to sort this out. The
> questions are:
>
> 1) how big a job is that? it seems like it ought to be easy enough
> but . . . . Does this involve any tricks/special concerns? anything to
> watch (torque setting tricks or whatever) when putting it all back
> together? And i assume that I should use new gaskets rather than
> re-using the old, no?
>
> 2) Is it OK to take the two manifolds off together annd then separate
> them? I'd prefer not to mess with the other bolt until they are off,
> to avoid getting in deeper trouble.
>
> Any advice will be greatly appreciated.
>
>
> Thanks in advance,
>
> Dan
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