[ROVERNET - UK] '80 SD1 block into a '70 3500s

A.G. Opstal van agOpstal at poelmann.nl
Tue Nov 1 15:32:43 GMT 2005


No problems there.
>From the P6 engine you need:
engine mounts,
alternator bracket,
waterpump (shorter), 
sump and strainer,
you need an electric fuel pump
cause the SD1 timingcover has no
provision for a mechanical pump.
if using the SU carbs try a pump with
no more than 3 psi, else use a pressure regulator.
Principally the SD1 timing cover is better
as it has a better oilpump.
the SD1 engine also use a different oilfilter
(different thread).

Now I think that is all.

The CR of the P6 engine is 10,5 : 1 and
the SD1 9,35 : 1.

If possible use the 5-speed box too. 

Regards and good luck,

Lex van Opstal.
The Netherlands.

-----Oorspronkelijk bericht-----
Van: rovernet-bounces at lyris.ccdata.com
[mailto:rovernet-bounces at lyris.ccdata.com] Namens Peter King
Verzonden: dinsdag 1 november 2005 15:56
Aan: rovernet at lyris.ccdata.com
Onderwerp: [ROVERNET - UK] '80 SD1 block into a '70 3500s

Hi all.

I'm rebuilding a seized '70 3500s engine, and considering using a block 
(complete) from an '80  SD1. I understand the compression ratio is 
different (9.xx:1 vs. 10:1 in the older engine), and I'm wondering if 
there are any problems or special considerations I should be aware of 
in making the exchange?

Thanks for any advice you can send my way.

Peter King

Peter King & Company
368 Congress Street
Boston, MA 02210

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