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Re: Spitfire compression

To: photoray@flash.net, spitfires@Autox.Team.Net, carbuff@nac.net
Subject: Re: Spitfire compression
From: Martin Hargreaves <martin@datamodl.demon.co.uk>
Date: Sat, 24 Oct 1998 17:51:38 +0100 (BST)
> At 09:06 AM 10/23/98 -0500, Ray Bryant wrote:
> >I just did a compression test at the urging of a friend.  I didn't want to
> >do it for fear of what I might find.
> >Here are the results:
> >#1 - 118 pounds
> >#2 - 90 pounds
> >#3 - 78 pounds
> >#4 - 117 pounds
> >This was done with the distributor center wire disconected so that it would
> >not start.
> >Was this the correct way to test?
> 
> Did you have the throttle open fully when you took those readings?  This is
> more accurate.

I recently did one on my UK MkIII (1296 cc) and got:

#1 - 163
#2 - 161
#3 - 173
#4 - 163

Throttle open, dist. disconnected at coil. Any ideas why #3 should be higher? 
#2 oils its plug 
pretty efficiently but looks OK from this, yes? Are these the right sort of 
number, they seem 
quite a lot higher than Ray's figures?

Cheers,

Martin.

'70 Spitfire MkIII
'86 Jaguar XJ-S V12


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#       Datamodel Ltd - Open Systems Management and Security      #
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