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U20 Timing Noise

To: <datsun-roadsters@autox.team.net>
Subject: U20 Timing Noise
From: "Loren Berg" <lberg@minnetronix.com>
Date: Mon, 7 Jul 2003 12:29:41 -0500
Hello everyone,

> I'm new to the list and am posting my first set of questions.  Here goes...
> 
> I have a 1968 SPL converted to a U20 w/5 speed and it is making
> some upper timing chain noise.  I pulled the valve cover and can see
> that the upper chain was cutting into the "L" bracket on the chain
> guide and that the chain is also just starting to cut into the bolt head
> holding on the chain guide.   I cut off the "L" bracket as I heard that
> this is one item that can fail with catastophic results.  The gears
> look O.K. as does the tensioner.  The questions are, how can you
> tell if the tensioner is bad?  At what point do I need to replace the
> upper chain and tensioner?  Or should I replace both now?
> 
> Thanks in advance,
>  - Loren
> 1968 1600 converted to U20
> 1970 2000 (parts car)

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