[Shotimes] Re: upper valve train tapping

[Al Fitz]

That's the symptoms of a worn cam tensioner assembly.

Al Fitz
alfitz@alfitz.com
SHO Parts at
http://www.alfitz.com/sho
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----- Original Message ----- 
From: "Don Donelson" <1badsho@thenuthouse.com>
To: <TechSHO@topica.com>
Sent: Monday, November 03, 2003 6:30 PM
Subject: upper valve train tapping


> 
> 
> I am doing a motor swap for a cust in Northern Florida who has a worn 
> out 3.0 motor.
> 
> Replacing it with a 23k 3.2 motor conversion.
> 
> Issue is this. He had a tapping noise that sounded as if it was coming 
> out of his valve covers. Definitly got worse with a push of the 
> throttle. 
> 
> Car does has stage I cams.
> 
> After pulling the motor and inspecting the 3.0 valve areas. The lobes 
> seem to be fine. All shims in place and nothing out of the ordinary 
> being out of place that is struck me.
> 
> All bearing caps were snug as were the tensioner for the rear cam 
> chains.
> 
> Would a bad chain tensioner do this ? Possibly a bad valve spring ? I am 
> trying to search for logical answers but cant find any.
> 
> What I am going to do with the 3.2 motor is use its chains and 
> tensioners .. to eliminate those potential issues.
> 
> Even thought of crank cancer since pwr is way off ... ( 3.0 ran like on 
> 5 cylinders ) .. but cars with cancer u could differentiate the noise 
> coming more from the front of the motor.
> 
> Suggestions or insight ?
> 
> 
> 
> dond
> 91SHO w. cowl hood and some options
> 89 Race prepared Super SHO w/ all the goodies !
> 
> All work performed by yours truly
> 
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