> Thanks in advance for any advice you can render. I have benefited greatly,
> as a novice AH restorer, from your past assitance.
>
> I have cleaned and restored the Manifold for my BJ8 engine. The 6 exhaust
> manifold bolts for the attachment of the front pipes
> are rusted and frozen in place, although all still are their normal
lengts.
> Threads are shot. I'd guess that heating the manifold
> and trying to unscrew then would be mosly unsuccessful.
>
> Do I take this manifold to an expensive machine shop to have the bolts
> removed and have the holes
> rethreaded to the correct size, or can I cut the bolts off and drill the
> holes for a slightly larger straight-through bold. (There seems to
> be enough room on the manifold to allow a standard sized bolt head and
> washers. (This will not be a concurs restoration.)
Ron, your chances of cutting off these hard studs and redrilling them in the
correct places are really slim. Take the whole thing to a machine shop with
the new bolts as someone has suggested.
> Second question out of curiosity. There are two small pheumatic fittings
and
> two thin tubes that exit the intake manifold and go out
> the bottom of the engine. Purpose? Don't they screw up the manifold
vacuum?
> It sure looks like they're an open 'hole' in the system.
These are overflows for the intake when things get flooded. Their ID is so
small that there is a negligible effect on vacuum.
Keith Pennell
>
> Thanks again, and I'm sure you'll hear from me again as I assemble this
pile
> of rubble.
>
> Ron Huseman
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