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Ford 9N, 2N & 8N Discussion Forum

cam busings?

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aaa

07-14-2007 10:49:49

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Dose the cam shaft have replacable bushings?

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Dan

07-14-2007 14:56:10

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Re: cam busings? in reply to aaa, 07-14-2007 10:49:49

I had to replace my 1948 8N block due to internal cracks. The replacement 1948 8N block had replacement cam bushings installed. It was a professional job and my machinist was impressed. I should have put a new cam shaft in though as after the full rebuild my oil pressure drops to just under 10 psi and I am pretty sure it is clearance in between these bushings and used cam shaft.

Anyway, this is an oddity and you don't see it often.

Dan

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Jason SImmerman

07-14-2007 13:07:10

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Re: cam busings? in reply to aaa, 07-14-2007 10:49:49

I've heard of our motors having Ford flathead V8 cam bearings installed in them. Never done it myself, just what I've heard.

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Bob

07-14-2007 10:52:32

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Re: cam busings? in reply to aaa, 07-14-2007 10:49:49

No, at least not unless a machinist has reworked the block, and installed them.

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aaa

07-14-2007 10:57:48

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Re: cam busings? in reply to Bob, 07-14-2007 10:52:32

Then does the cam shaft have somekind of bearing or bushing on it?

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TheOldHokie

07-14-2007 11:01:04

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Re: cam busings? in reply to aaa, 07-14-2007 10:57:48

The cam runs directly in the bore of the cast iron block.

TOH

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aaa

07-14-2007 11:09:45

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Re: cam busings? in reply to TheOldHokie, 07-14-2007 11:01:04

Then I take it the camshaft journals are made of softer material so that they wear instead of the cast iron block, or maybe cam shaft journal wear isn't normally a issue with these engines?

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Bob

07-14-2007 11:16:06

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Re: cam busings? in reply to aaa, 07-14-2007 11:09:45

The block AND the camshaft are both made of cast iron, and both do wear, USUALLY not enough to cause problems.

As I said before, I have heard of folks line-boring the block to accept inserts. I have no idea of what specific inserts they'd use, but engine bearing catalogs have a progressive size chart for inserts, and it's often possible to find one from another application that will allow something like this to be done.

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aaa

07-14-2007 11:26:48

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Re: cam busings? in reply to Bob, 07-14-2007 11:16:06

Ok, Thanks for the Info..

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