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Re: Engine RPM "Redline" - How to determine?

To: Paul Hunt <paul.hunt1@virgin.net>, Trevor Boicey <tboicey@brit.ca>
Subject: Re: Engine RPM "Redline" - How to determine?
From: Ray McCrary <spook01@mindspring.com>
Date: Wed, 26 Nov 1997 15:09:48 -0600
At 08:05 PM 11/26/97 +0000, Paul Hunt wrote:
>Trevor Boicey wrote:
>> 
>> Tyson Sherman wrote:
>> >
>> > Ulix Goettsch wrote:
>> >
>> > > There is a point above which one shouldn't rev, and that is when the
>> > > valves loose contact with the cam.  This is referred to as valve ______
>> >
>> > <SNIP>
>> > "crash speed" is what you're looking for.  Atleast that's what
>> > the Bentley manual calls it for a B.  It's 6200rpm in that
>> > car where redline starts at 6000.
>> 
>>   I think he wants "valve float".
>> 
>>   They float above the cam, and can cause damage if they hit
>> the piston. Usually though you lose so much power from float
>> that you don't go much past it.
>> 
>> --
>> Trevor Boicey
>> Ottawa, Canada
>> tboicey@brit.ca
>> http://www.brit.ca/~tboicey/
>
>... or valve bounce in the UK.  I used to work across the road from a 
>'garage', and their standard method of diagnosis, tuning and repair 
>seemed to be to rev the engine up to valve bounce and hold it there for 
>several seconds at a time.
>
>PaulH.
>
Sounds somewhat like an Italian tuneup! Only it was a Brit tuneup.

Ray

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