John
I agree with Joe. My fan clutch went south on my 75 Spit and made
the same type of noises while doing so.Check your fan for any play
and if you have much this could well be the problem. Lots of luck.
Earl Smith
75,76&79 Spits
>From: Joe Curry <spitlist@gte.net>
>Reply-To: Joe Curry <spitlist@gte.net>
>To: Jjcousins@ra.rockwell.com
>CC: spitfires@autox.team.net
>Subject: Re: Strange Engine Noise
>Date: Thu, 08 Apr 1999 09:52:22 -0700
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>John,
>If your car is fitted with one of those "Viscous Coupling" fan
>assemblies, this might be the source of your noise. From what you
say,
>it appears that it may be related to the fan since it appears only
to be
>a problem before the car warms up.
>
>I'd be interested in knowing what you find.
>
>Regards,
>Joe
>
>Jjcousins@ra.rockwell.com wrote:
>>
>> Can anyone offer any ideas on this, please?
>>
>> Background: I have rebuilt my 1977 Spitfire in the last 3 years.
I didn't do
>> ANYTHING to the engine as it ran well when the car was in
shambles, so I just
>> went with it. I drove it all last year for ~1000 miles.
>>
>> First Clue of problem: All last year (and now) when car was warm,
i.e. been on
>> highway or 45mph for a while, when shutting engine off and engine
was cycling
>> slowly to off, it sounded like, for the last few turns of the
engine, a really
>> RRR. RRR, RRR sound with each turn of the engine. Sort of sounded
like your
>> teeth grinding, but more metallic of course. I put up with it and
it still does
>> it.
>>
>> LATE last year, and now. When cold, at certain LOW RPMs (like
1000-1500) a
>> rattle sound almost EXACTLY the same noise as the above described
noise happens.
>> It will go away when RPMs are increased. But comes back at the
same range of
>> low RPMs. The noise, also would cycle - last for 1/2 second, then
off for maybe
>> 3 seconds - then repeat. (Was not directly related to engine
turns). When car
>> gets warm, this seems to go away (that is, after driving down a
long street, and
>> then stopping, it didn't seem to do it anymore). Then, when the
car shuts down,
>> I get the noise on the shutdown like above.
>>
>> It really sounds like metal not having lubrication somewhere and
sounds like its
>> coming directly from the engine. Could there be some lubricant
needed somewhere
>> - not just oil in the engine? I just changed the oil before my
first drive a
>> couple of days ago. It didn't have any effect. How about the
mating between
>> two surfaces somewhere? Flywheel? I don't know anything much
about inside the
>> engine/tranny (obviously).
>>
>> I have NO clutch or shifting problems at all. I know the car is
running too
>> rich and need to fix this ( I think - judging by the smell of the
car). Did I
>> damage something by running too rich all last year?
>>
>> HELP??
>>
>> John (1977 Spit)
>
>--
>"If you can't excel with talent, triumph with effort."
> -- Dave Weinbaum in National Enquirer
>
>
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