FS 3.3 M90 block injected engine

M

Mario L.

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Friends,

I am parting a 1979 Euro 635CSi that has installed a good running 3.3 liter M90 block with a VIN from a US Spec 1979 733i complete with injection system. New radiator for a 6 series . . will remove from car and sell as a whole running engine with ECU , new fuel pump and mounting bracket . . Complete package $750.00

Mario L.
603.228.28878

VSR1.com
 
Price drop

Mario L. said:
Friends,

I am parting a 1979 Euro 635CSi that has installed a good running 3.3 liter M90 block with a VIN from a US Spec 1979 733i complete with injection system. New radiator for a 6 series . . will remove from car and sell as a whole running engine with ECU , new fuel pump and mounting bracket . . Complete package $750.00

Mario L.
603.228.28878

VSR1.com
Click to expand...

Will sell for less!!!! $500.00 for a good running engine!
 
Markos said:
Can someone explain what a 3.3 M90 block is?
Click to expand...
the M90 was bored/stroked to 3.5 liter in 1978-79 and found in the first euro 635's, alng w/ dogleg 5 speed, 3.07 final drive, etc etc etc. The cars were known as "The Truth"...I owned one, still do it was a rotten carcass when I got it 20 years ago but that engine deserves the mystique assigned to it. THAT was the original "dirty engine."
Oral tradition : The M90 was the first road going BMW engine with 3.5 litre displacement. Originally this engine was used to test if the M88 engine was reliable with the narrow web spacing of 6.6mm. This means that this engine has exactly the same bore and stroke as the M88 and is directly related. However instead of a DOHC cylinder head with 24 valves, BMW used the SOHC cylinder head with 12 valves. The use of an electronically controlled fuel management system (Bosch LE-Jetronic) allowed a slightly higher compression of 9.3:1. Strictly, the M90 engine is not an M production engine although the E12 ///M535I in which it is used is a real M car. Until 1981, the M90 engine was used for the early 635CSI and the very rare and delectable E12 ///M535I from 1980.
 
Thanks DP! I'm pretty familiar with the large bore 3.5L M90. VSR1 is the only reference to a 3.3L M90 that I have seen. Misnomer or a thing?
 
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