[Healeys] 100 Engine Help

WILLIAM B LAWRENCE ynotink at msn.com
Thu Dec 13 19:50:07 MST 2007

>From my readings on the topic while researching valve guide seals, bronze 
guides can be a problem in cast iron heads because of the difference in 
thermal expansion rates. The head expanding and contracting eventually 
crushes the guide and traps the valve stem. (Or so they say.) any of the 
usual suspects will be able to provide guides and any competent machine shop 
should be able to install them. While I was at it I installed newer pattern 
valve guide seals too.

The main bearing caps have a threaded hole in them (If I remember they are 
the same pattern as the cap bolts. so you can thread a bolt into the cap and 
use it for leverage to pull the cap out. maybe you could adapt a slide 
hammer to it. Bearings are also pretty commonly available in the most common 

Good luck.

Bill Lawrence
BN1 # 554

>From: "Alan Seigrist" <healey.nut at gmail.com>
>To: Healey <Healeys at autox.team.net>
>Subject: [Healeys] 100 Engine Help
>Date: Thu, 13 Dec 2007 23:21:49 +0800
>Hi All -
>Got the head off my wonky A90 and found out that one of the push rods is
>bent.  I was thinking the noise was a spun bearing but now I wonder if it's
>just that the PO put in a bonze valve guide recently.  I can't think of
>anything else that would cause a bent push rod.  Ideas / thoughts?
>Where can I get decent valve guides?
>I also want to pull the caps off the crank bearings - any easy suggestions
>for doing this?  They are a slight interference fit on the block so you can
>pull them off by hand, unfortuantely.
>Also, where can I get decent bearings and thrust washers for the motor?

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