M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => Engine + Driveline => Topic started by: M1kEC on January 20, 2014, 03:46:46 PM

Title: m40 m42 powersteering pumps
Post by: M1kEC on January 20, 2014, 03:46:46 PM

hi ther all im new to this forum im droping a m42 into my e30 on the weekend but it dont have a pump on the engine now ive got bits of the old m40 lump that was in ie starter alternator an power steering pump now will the m40 pump bolt on m42 ive check real oem an the pumps are different numbers but that dont mean it wont fit  ::) so can anyone help me out ?

Title: Re: m40 m42 powersteering pumps
Post by: DesktopDave on January 20, 2014, 08:05:03 PM

I pulled my pump out totally, are you sure you need it? Not sure if they're the same - we didn't get the SOHC motor over here.

Title: Re: m40 m42 powersteering pumps
Post by: colin86325 on January 21, 2014, 08:17:20 AM

I would bet that the pump will fit, but that you need the correct M42 p/s pulley installed on the pump. 
This is the case with the E30 M3.  The pump part number is different, but it is just because it uses an engine-specific pulley.  Swap the pulleys and it should work.

Title: Re: m40 m42 powersteering pumps
Post by: Darky on February 11, 2014, 06:39:42 AM

My ps pump from m40 bolted to m42 block no problem both from engines where from e30s.
But if you mix car models ie e30 and e36 not too sure, but positive you will have issues with fan belts and dip sticks!