Marcos Maniacs

Thanks Donny for the reply, i didn't buy the marcos that was advertised as the 
oil pressure was low.

I did buy another one that I need to convert to left hand drive, any idea who 
does conversions

Rgds
Dave Penny




________________________________
From: Donny Lang <indigo@...>
To: MarcosManiacs@yahoogroups.com
Sent: Sun, April 24, 2011 9:58:17 PM
Subject: Re: [MarcosManiacs] Oil pressure

  
I have a 1980 Triumph TR8 that uses the same Rover 3.5 engine. My engine idles 
(850-900 rpm) at about 18 -20 psi hot, and runs at 35 to 45 psi hot, depending 
on rpm. The shop manual engine specs state oil pressure as 28 psi at 2000 rpm 
hot.
 
It is easy to alter the oil pressure on these engines by shimming the bypass 
spring pressure on the oil pump, provided the journal clearances are within 
spec.  This is done by adding a small washer on top[ of the spring. I shimmed 
my bypass spring to overcome centrifugal forces because I use a higher redline. 
This engine is based on the '61 to '63 Buick, and as such, runs reletively low 
factory oil pressure.
-Donny
----- Original Message ----- 
>From: Dave Penny 
>To: marcosmaniacs@yahoogroups.com 
>Sent: Friday, April 22, 2011 10:09 AM
>Subject: [MarcosManiacs] Oil pressure
>
>  
>Can anybody let me know the oil pressure for an 86 mantula,  3;5 liter rover 
>engine.
>
>Idle pressure and running pressure
>
>thanks