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

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

Dave,
If We can find the parts, I can do the change over. I am in Florida. I am 
finishing a complete restoration on 3v 5642. It is a LHD. Geir Olav, in Norway, 
changed his over a couple years ago.
Regards,
Larry
3v5536



________________________________
From: Ron McLeod <ronald.mcleod@sympatico.ca>
To: MarcosManiacs@yahoogroups.com
Sent: Wed, April 27, 2011 8:58:05 AM
Subject: RE: [MarcosManiacs] Oil pressure

  
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@yahoogroups.com [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 
>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

Dave

I’ve driven a RHD Marcos for a great number or years (since 1975) and given the size a handling of the car never given the conversion any consideration.  My suggestion is save the conversion $$ and fix the car as is and get out on the road and enjoy!

Thanks

Stephen Spalding

#5916T2

From: MarcosManiacs@yahoogroups.com [mailto:MarcosManiacs@yahoogroups.com] On Behalf Of Ron McLeod
Sent: Wednesday, April 27, 2011 5:58 AM
To: MarcosManiacs@yahoogroups.com
Subject: RE: [MarcosManiacs] Oil pressure

 

  

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@yahoogroups.com [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@...t>
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

thanks for the input guys, much appreciated,

Larry where are you in lorida, I'm 20 miles north of Orlando?  

  what about AC!!!!  and engine cooling/

I i have a v6 3 litre which i seem to recall from my mechanic days as being the 
capri engine.  


thanks to all of you fellas.


 



________________________________
From: larry meadows <lmeadowsw@...>
To: MarcosManiacs@yahoogroups.com
Sent: Wed, April 27, 2011 12:01:17 PM
Subject: Re: [MarcosManiacs] Oil pressure

  
Dave,
If We can find the parts, I can do the change over. I am in Florida. I am 
finishing a complete restoration on 3v 5642. It is a LHD. Geir Olav, in Norway, 
changed his over a couple years ago.
Regards,
Larry
3v5536



________________________________
From: Ron McLeod <ronald.mcleod@...>
To: MarcosManiacs@yahoogroups.com
Sent: Wed, April 27, 2011 8:58:05 AM
Subject: RE: [MarcosManiacs] Oil pressure

  
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@yahoogroups.com [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@terranova.net>
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

Dave, The conversion from RHD to LHD shouldn't be too difficult. I have been stalled on my rebuild/repower Marcos project which includes switching the steering. 
The rack can be sourced from a Triumph Spitfire or GT6, and the dash is symmetrical. A mirror-image dash must be copied, and the battery box swapped for the pedal box. Its a little fiberglass work and some brake/clutck piping. The wiring harness "flips" to the other side with very minor modifications. My car has a threaded bung for the heim/rose joint column support on the left side, so no welding is required there. I likely won't swap the wipers to the other side. You may need to change the headlights out if they are specific to RHD cars like mine.
It still all depends which engine / tranny combo you have, and I assume you have a steel chassis? 
If you are handy, you might be able to do the swap, otherwise a competent restoration should be able to do the job. What part of the wourld are you in? 
-Donny #5514

  ----- Original Message ----- 
  From: Dave Penny 
  To: MarcosManiacs@yahoogroups.com 
  Sent: Tuesday, April 26, 2011 9:00 PM
  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@terranova.net>
  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