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rich434
richard markham

(6 posts)

Registered:
07/03/2021 05:01PM

Main British Car:
What Rover V8 do I have?
Posted by: rich434
Date: July 03, 2021 05:05PM

My block is marked S81D00589A. It's also marked compression ratio 9.37:1

What motor do I have?

I read that the D means cross bolted block which is a good thing!

The S81 isn't in many list of codes I've seen so far, closest is a Morgan.

I could measure the stroke through the spark plug hole if it helped...

Cheers,

Richard.


joe_padavano
Joseph Padavano
Northern Virginia
(157 posts)

Registered:
02/15/2010 03:49PM

Main British Car:
1962 F-85 Deluxe wagon 215 Olds

Re: What Rover V8 do I have?
Posted by: joe_padavano
Date: July 04, 2021 08:49AM

I don't know about the "D", but the bolts on a cross-bolted block should be pretty obvious if you look at the sides of the block above the pan rail.


MGBV8
Carl Floyd
Kingsport, TN
(4512 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: What Rover V8 do I have?
Posted by: MGBV8
Date: July 04, 2021 11:20AM

4.0L service engine (replacement engine)

[www.lrfaq.org]

I believe the D is for Range Rover/Discovery
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rich434
richard markham

(6 posts)

Registered:
07/03/2021 05:01PM

Main British Car:
Re: What Rover V8 do I have?
Posted by: rich434
Date: July 06, 2021 11:03AM

Turner Engineering are saying it's a 4.6 MEMES from Landrover Disco.


MGBV8
Carl Floyd
Kingsport, TN
(4512 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: What Rover V8 do I have?
Posted by: MGBV8
Date: July 07, 2021 10:30AM

Maybe, maybe not. Depending who is on the other end of the phone, the info may be about as reliable as the internet. ;)

It does not appear to be a regular engine that came in a Rover straight off the production line, because that 81D engine code is not on any other Rover engine lists.

The stroke could easily be checked via the spark plug hole. The 4.0 has a 2.8" stroke & the 4.6 is 3.2".


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