Barney:
Your's is the first failure of it's kind that I have run across. I
add the disclaimer that I am not a professional engine builder, only a
somewhat minor league enthusiast. The Crane and also Isky tubular pushrods
have been on the market for very many years. They have been used in a
tremendous number of American racing and street MG engines without any
problems.
I would not jump to the conclusion that this gentlemans problems are
due to Crane brand tubular pushrods, simply from the damaged ones you found
in your engine.
Kelvin Dodd.
He who looks before he leaps, often sees the prettiest scenery.
> -----Original Message-----
> From: Barney Gaylord [mailto:barneymg@ntsource.com]
> Sent: Monday, August 28, 2000 4:02 PM
> To: Stuart MacMillan
> Cc: mgs@autox.team.net
> Subject: Re: Valve clatter-help! WARNING - DISASTER LOOMS
>
>
> At 01:33 PM 8/28/2000 -0700, Stuart MacMillan wrote:
>
> >.... I replaced the early solid lifters with the later type
> bucket lifters
> and new Crane push rods .... and I get a light, resonant
> valve clatter at
> 3500-3600 rpm, .... any ideas?
>
> Yes. Absolutely got an idea. Look here first:
> http://www.ntsource.com/~barneymg/grapes/bent_pr.jpg
>
> This WAS a brand new set of Crane Cams pushrods. After about
> 3000 miles of
> running time disaster struck, big time. Witness one
> bent/broken intake
> valve and one holed piston. Also notice the end piece
> inserts that came
> loose from the Crane 3-piece tubular pushrods. Six of the
> eight pushrods
> had the end pieces either fall out or were so loose that they could be
> lifted out with finger force only.
>
> Now thanks for reminding me, as I haven't settled this with
> Crane Cams yet.
>
> Barney Gaylord
> 1958 MGA with an attitude
> http://www.ntsource.com/~barneymg
>
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