Engine and Transmission Tech

tips, technology, tools and techniques related to vehicle driveline components

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roverman
Art Gertz
Winchester, CA.
(3061 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Series II 3.9L. RV8 ?
Posted by: roverman
Date: October 14, 2020 06:53PM

stamped on left deck: 36D47473B 9.35 CR.
Has tall main caps, not cross drilled. Small mains. Bosses are cast in block for cross drilling.
Series II ? Seems like a good choice, to restore My Huffaker GT-1 with ?
Anybody ? Thanks, Art.


MGBV8
Carl Floyd
Kingsport, TN
(3991 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Series II 3.9L. RV8 ?
Posted by: MGBV8
Date: October 16, 2020 11:59AM

Sure it is a great little engine. You can have it cross drilled if you wish. I have read that the bolts must be tightened in the correct order (mains first , then cross bolts, I think).

I don't believe that it is an RV8 engine, though. I believe they 48A for those.


bsa_m21
Martin Rothman
Vancouver, Canada
(214 posts)

Registered:
01/06/2009 11:41AM

Main British Car:
1980 TR7V8 Rover 3.9L

authors avatar
Re: Series II 3.9L. RV8 ?
Posted by: bsa_m21
Date: October 16, 2020 03:13PM

36D one of the last generation of 3.9L blocks, fitted for 9.35 pistons from the factory. They were in Range Rovers From 1988 to 1992. Early ones (I have one) didn't have the bosses in the block but last few ones did. I'd say your engine is likely a 1992 version.

Not sure why they didn't change the prefix number or something else, when they made the casting change, but they didn't.

36D indicates it was originally setup as 9.35 compression, EFI and auto transmission

I've never heard of a 48A prefix. You can find all the stamped prefix numbers here:

[rimmerbros.com]


M.


MGBV8
Carl Floyd
Kingsport, TN
(3991 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Series II 3.9L. RV8 ?
Posted by: MGBV8
Date: October 16, 2020 05:24PM

The RV8 was built in 1993 to Nov 1995. It used a 3.9. So, those block cam a bit later than the 36D.
Quote:
Engine Types & Numbers - From Geoff King -
"48A appears to be the prefix number assigned by Rover to the 3.9 MG RV8 engine, it was developed
from the post Rover SD1 and Range Rover 3.5 fuel injected V8 (larger bore, same stroke). The number is
unique but the engine is exactly the same as the 3.9 Range Rover engine type 35D or 36D (depending on
transmission type).

[mgrv8.nl]


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