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Re: [TR] TR4 Spin On Oil Filter

To: "Randall" <tr3driver@ca.rr.com>, <triumphs@autox.team.net>
Subject: Re: [TR] TR4 Spin On Oil Filter
From: "John Macartney" <standardtriumph@btinternet.com>
Date: Fri, 13 Feb 2009 23:08:13 -0000
Randall wrote:

> Are you sure you didn't read that it should NOT have a bypass valve?
>  An anti-drainback valve might possibly allow slightly faster oil pressure
> buildup at engine startup; but since the filter is angled downward, the
> effect will be small (if any).  The original filter setup had no
> anti-drainback valve.  And if anything, the anti-drainback would reduce
> pressure in the galleries while the engine is running, since it takes some
> small pressure to push it open.

My sentiments entirely. This also extends to the (IMHO) entirely useless 
additional oil feed to the 
rocker shaft - unless of course racing people prefer that for their particular 
purposes.

Jonmac 
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