[net.auto] Rover lump

chas@ihuxe.UUCP (Charles Lambert) (05/21/85)

By the way, I believe that the 3.5 liter Rover engine is a very close relative
of an Oldsmobile unit. Anybody got the full story?

Charlie @ the Death Star, IL.

bhs@siemens.UUCP (05/21/85)

Buick designed the actual 3.5l engine way back, oh, I think in the sixties, but
decided that it was too small for american engines. They thus sold the design
to Rover, who have done a splendid job building it, it is very smooth. Now, I
am sure, Buick would give anything to have a small fuel efficient eight in that
size range.

Bernard H. Schwab
Siemens RTL, Princeton, NJ

dbp@dataio.UUCP (Dave Pellerin) (05/21/85)

>By the way, I believe that the 3.5 liter Rover engine is a very close relative
>of an Oldsmobile unit. Anybody got the full story?
>
>Charlie @ the Death Star, IL.

I don't have the full story, but it goes something like this:

GM developed the 215 CID V-8 in 1960 (or therabouts) to install as
an option in the Pontiac Tempest, Oldsmobile F-85, and Buick Skylark.
The Buick and Olds versions are virtually identical (the Olds has five
head bolts per cyl, the Buick has four, other minor diffs).

A factory turbo-charger was available on one of these models (I think
it was the Tempest?) and even without turocharging, these engines could
be coaxed to well over 200 HP (with bolt-ons like headers, funny cam, etc.)

For some reason, GM stopped producing the engine in 1963 and sold the
rights to British Leyland.  The engine has since been used in the Land
Rovers, Rover TC3500 sedans and the Triumph TR8. 

The engine is very light (all aluminum with sleel cylinder sleeves) and
is a natural for engine swap projects.  I put one in a Chevy Vega and
I have seen them put in TR6's, a Sunbeam, an MGB and a Ferrari Marretti.
There is also a very fast homebuilt aircraft design that uses it.


		- Dave  (...uw-beaver!teltone!dataio!dbp)

tron@fluke.UUCP (Peter Barbee) (05/22/85)

>By the way, I believe that the 3.5 liter Rover engine is a very close relative
>of an Oldsmobile unit. Anybody got the full story?

I think this is the whole story, but it is possible I'm wrong.  The 3.5 liter
V8 that appears in the Rovers (and in TR8s, and  couple of other English cars
I think) was bought by BMC from Buick in the late-middle '60s.  It was used
in middle of the road sedans but Buick didn't really need to put a aluminum
V8 in sedans and with the advent of pollution requirements they decided to not
update the engine and instead sold the tooling to BMC.

Peter Barbee

jeepcj2a@fluke.UUCP (Dale Chaudiere) (05/23/85)

> By the way, I believe that the 3.5 liter Rover engine is a very close relative
> of an Oldsmobile unit. Anybody got the full story?
> 
> Charlie @ the Death Star, IL.

The aluminum 215 cu in V8 used in Rover cars was sold to Rover by Buick in the
early 60s.  I did not convert 3.5 liter to cu in, so I don't know if this the
same engine.  By the way this was the makings of the first Buick V6.  Buick
lopped off two cylinders and cast the block in iron rather than alumimum.  They
increased the bore but the values were the same (small).