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Re: tune up questions..longish

To: "Andy Webster" <trunkie@hotmail.com>
Subject: Re: tune up questions..longish
From: "Ron.Corry" <Corry@iol.ie>
Date: Tue, 02 Nov 1999 07:11:34
Cc: spridgets@autox.team.net
In-reply-to: <19991102031945.43535.qmail@hotmail.com>
Reply-to: "Ron.Corry" <Corry@iol.ie>
Sender: owner-spridgets@autox.team.net
Hi Andy,

At 03:19 08:03 02/11/99 GMT, Andy Webster wrote:
>
>I figure 'running clearance' is the one I check but what is 'timing 
>clearance'?
>

Believe "Timing Clearance" to be the gap needed in the tappets, while
checking the given valve opening degrees. It would seem logical that
a larger gap would lead to a delay in a valve opening, relative to 
Crankshaft degrees of rotation.

Anybody got any other ideas?

Cheers,

Ron Corry
Longford, Ireland.

'59 Sprite "Oggibip"









>>From: "Ron.Corry" <Corry@iol.ie>
>>To: "Andy Webster" <trunkie@hotmail.com>
>>CC: spridgets@autox.team.net
>>Subject: Re: tune up questions..longish
>>Date: Mon, 01 Nov 1999 21:20:10
>>
>>Hi Andy,
>>
>>"Tuning BMC Sports Cars" by Mike Garton (1969) gives the following,
>>in relation to the C-AEA 731 cam:-
>>
>>Running clearance             .015"
>>
>>Timing clearance              .021"
>>
>>Hope this helps.
>>
>>Ron
>>59 Sprite "Oggibip"
>>========================================================
>>At 12:33  01/11/99 GMT, Andy Webster wrote:
>> >Greetings,
>>Snip...
>> >My tune up book  states valve clearances of .012" or .015" for 
>>competitiom
>> >driving...why is this? Should I be using .015" seeing I have a modified
>> >engine (731 cam, extractors)?
>>
>>
>
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