[Roadsters] Broke Cam- what should I check?

[Gary and Cindy Ault]

Nathaniel,

You are not paranoid, you are appropriately cautious. The collision with the 
piston could easily have bent the valve, even if ever so slightly.

Both the engine and the head need to be in the hands of a competent machine 
shop.  The head should be bolted and torqued to the head, and the camshaft 
rotation should be checked to mke sure it is free.  It probably is not.  I 
do not know what remedial action can be taken -- perhaps shimming the cam 
towers to bring things into line will suffice, but that is beyond my 
expertise.

Gary

----- Original Message ----- 
From: <nmleeds at mindspring.com>
To: <datsun-roadsters at autox.team.net>
Sent: Saturday, July 18, 2009 9:37 PM
Subject: [Roadsters] Broke Cam- what should I check?


> This is the latest in a series of calls for help after I broke my cam.
>
> The concensus of the group was that I should pull the head and get it 
> worked on (unless I liked braking cams).  Good advice and the possibility 
> of some Rebello Racing head work made it more inviting.
>
> So the head is off and I've done a visual inspection of the head, valves, 
> and pistons.  The valves look like they took a hit when the cam broke and 
> there's a small indent on the top of one of the pistons.  I've paranoid 
> enough that I'm going get someone to pull the valve springs and look a the 
> valves and valve guides.
>
> The question is what else I should look for and whether I should pull the 
> pistons too.  I cleaned the top of the pistons best I could around the 
> area of the valve divit and didn't see any cracking.  Ideas? Suggestions?
>
> Should I just rebuild the whole engine and start from scratch, or is it 
> unnecessary?
>
> What else should I look for.
>
> Nathaniel Leeds
> '69 U10, broken cam and heart.
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