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Allison V-12 bearings

 
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gryan
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PostPosted: Thu Feb 23, 2006 04:55    Post subject: Allison V-12 bearings Reply with quote

The Allison V-12 engine features an unusual type of big end journal bearing. This bearing is double-sided. On the inner surface it bears against the crankshaft big end journal, while on its outside surface it allows the blade rod to articulate. I am interested I knowing if anyone is currently manufacturing these bearings. I imagine there must be a manufacturer supplying them as there are still quite a few Allisons about (and being rebuilt and serviced). Does anyone have a name and contact details?

Thanks

Regards

Gerald
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gwhite



Joined: 13 Jul 2003
Posts: 58

PostPosted: Wed Mar 01, 2006 08:57    Post subject: Reply with quote

Gerald:

Overhauling old WWII engines is very different from, say, a small block Chevy. Nothing, and I mean nothing is pitched. Bearings are refurbished by stripping the lead plating and replating to very exacting specs. Even a high time engine rarely wears though to the silver so it's a well established process to replate them. This applies to all the large recips.
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klankenau



Joined: 15 Nov 2005
Posts: 41
Location: Dallas, Texas

PostPosted: Fri Apr 21, 2006 08:57    Post subject: Reply with quote

We use Paul's Rod & Babbit (816-587-4747) to re-line bearing shells, but you will need to supply all specifications and tollerances. They are very creative in their tooling usage. As in any non-factory babbit work, you will need to take much care and patience (read 'finesse') during fitment/assembly.
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