Marcos Maniacs

I know of a GT here in Ontario that was converted to LHD by Rory McMath (Marcos Heritage Spares Ltd.) in the UK.

 

Regards . . . Ron McLeod

Marcos Mantis P8/5858

Marcos 3L GT 3V-5642

 

From: MarcosManiacs@...m [mailto:MarcosManiacs@yahoogroups.com] On Behalf Of Dave Penny
Sent: April-26-11 9:01 PM
To: MarcosManiacs@yahoogroups.com
Subject: Re: [MarcosManiacs] Oil pressure

 

  

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 <mailto:davepenny13@...>  

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