[NSRCA-discussion] YS 140 Sport Valve failure

[Ed Miller]

Unfortunately this is a nagging quality control issue of YS engines.  I have 
personal seen this happen to the 120's, the 63's and 91AC's.  In all cases 
I've personally been involved in, a return of the defective head to YS 
resulted in a new head at no charge.
Ed M.
----- Original Message ----- 
From: "Claude Weimer" <cweimer at tconl.com>
To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
Sent: Monday, August 13, 2007 3:41 PM
Subject: [NSRCA-discussion] YS 140 Sport Valve failure


>I talked to a guy in the spring about his problems with a YS 140 Sport. He
> told me he had the whole valve assembly drop into the cylinder. By the 
> whole
> assembly I mean the piece that is molded or pressed into the head. It 
> looks
> like a cylinder with the valve, the valve seat, the spring and retainer. 
> He
> told me he had that happened three times last year and he lost the whole
> season because of the problem. I almost questioned what he was telling me
> because I had never heard of it happening. Well this week end some one
> brought me an engine to repair for him and the same thing had happened. My
> concern is if we buy a new head is the same failure going to happen? Has
> there been a change in the heads for the non DZ heads? Any comments would 
> be
> appreciated.
>
>
>
> Claude Weimer
>
>


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