Do you know what size the exhaust manifold bolt is for a 1990 F-250 460 ci?

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Anthony - 27 Mar 2006 22:29 GMT

It's the rear bolt (not a stud) on the right side. I was told that
it's 3/8"x 3" long, but I don't know the thread size. The sucker is
busted off in there,so I'm going to try to EZ-Out it. Any tips on
doing that would help to.

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351CJ - 28 Mar 2006 00:38 GMT

> It's the rear bolt (not a stud) on the right side. I was told that
> it's 3/8"x 3" long, but I don't know the thread size. The sucker is
> busted off in there,so I'm going to try to EZ-Out it. Any tips on
> doing that would help to.

Good luck with the EZ-out method.

I ended up using a hardened carbide bit in my dremel to chew through the
broken EZ-outs, drill bits and bolts. I carefully cleaned out all the crap,
chased the threads, and installed new bolts with generous amounts of
anti-seize...

Not a simple task, I kept thinking I would trash the hole...

I used bits like these found locally, buy a few they are VERY brittle.

http://www.spiceberry.com/drills.htm
http://www.redhillgeneralstore.com/B25630633.htm

Good Luck

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Dave Lee - 28 Mar 2006 01:35 GMT

I agree, skip the ez-out. Got a welder? Weld a washer to it, then a nut to
the washer. ratchet from there.

If not, take it to someone who can do this, since the ez-out method is gonna
end up at a machimist, or a new head.

>> It's the rear bolt (not a stud) on the right side. I was told that
>> it's 3/8"x 3" long, but I don't know the thread size. The sucker is
[quoted text clipped - 16 lines]
>
> Good Luck

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Anthony - 28 Mar 2006 03:41 GMT

Wow- I only thought I was bummed out. This sounds like a really hard
project, but considering the cost of removing the head I'm going to
take your advice and forget the EZ-Out. I'll let you know how it went.

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