Back into the sump, Blake, by a direct and unrestricted route.
Lawrie
----- Original Message -----
From: "Bullwinkle" <yd3@nvc.net>
To: <mgs@autox.team.net>; <mgt@autox.tem.net>; <mg-tabc@yahoogroups.com>;
"DOHC" <mgatwincam@egroups.com>
Sent: Wednesday, May 22, 2002 9:50 AM
Subject: Oil pressure relief valve, was oil pressure gauge
> Barney, Bill, Chip, Lawrie, Skip, and all other racers and mechanic
> freaks:
>
> <<<snip>>>
> my MGA lost oil pressure completely at about 7000 rpm because
> the oil pump was cavitating.
> <<<snip>>>
>
> Okay, that comment has me thinking, terrible thought that is.
>
> Where does the excess oil from the relief valve go to? Into the sump or
> back into the pump? On the B series engine where does it go? On the
> XPAG engine where does it go?
>
> Was the effect of raising the oil pressure on racing engines actually to
> decrease the flow rate at high RPM's and therefore reduce the oil
> cavitation problem in the pump? This question of course depends on
> where the excess oil from the pressure relief valve goes.
>
> Blake
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