After thorough review of my original posting, I find no evidence of my
jumping to any conclusion (although IMHO I think the evidence speaks for
itself). I merely said I had an idea, and proceeded to relate some factual
information.
Also FWIW, these pushrods were not purchased through Moss Motors, so if it
happens to be a single production batch problem there is less likelihood
that it would affect someone else, and in particular any such pushrods
purchased through Moss. Feel better now Kelvin?
Barney Gaylord
1958 MGA with an attitude
http://www.ntsource.com/~barneymg
----------------
At 04:24 PM 8/28/2000 -0700, Dodd, Kelvin wrote:
>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.
>....
>> -----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.
|
