Announcement

Collapse
No announcement yet.

all m20 blocks created equal?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    all m20 blocks created equal?

    just wondering if the m20b25 and b27 had the same block. i thought so, but someone who enquired about it thought different

    i was under the impression that only the ix block was different
    Originally posted by blunt
    can you get me a deal on cases of their (fiji) bottled water? i wash my 02 in that shit

    #2
    Damn, somebody who knows something speak up!

    Luke

    Closing SOON!
    "LAST CHANCE FOR G.A.S." DEAL IS ON NOW

    Luke AT germanaudiospecialties DOT com or text 425-761-6450, or for quickest answers, call me at the shop 360-669-0398

    Thanks for 10 years of fun!

    Comment


      #3
      Yes. For all intents the early b25 and b27 block are the same.

      Late b25 blocks used different main bearings. (I have a late b25 block in my car)

      I don't know about the b20 and b23 blocks.
      Tenured Automotive Service Professional - Avid BMW Enthusiast

      Vapor Honing & E30 ABS Pump Refurbishment Service
      https://mtechniqueabs.com/

      Comment


        #4
        Yup, only difference in those 2 was the main bearing change

        I have an early style b25 block in my car
        BimmerHeads
        Classic BMW Specialists
        Santa Clarita, CA

        www.BimmerHeads.com

        Comment


          #5
          Lots of different M20 blocks around. The B20 and B23 blocks only have a 80mm bore size, they also lack the steam holes between the cylinders which aid cooling, good but not necessary. There is also a difference with some of the 5 series blocks- the dipstick goes through the oil pan, not through the block. This wont be a big deal for the US guys but we didn't get E30 etas over here so we have to use 5 series M20B27. Then there are changes like the main bearings...

          Can't comment on iX block though

          Comment


            #6
            The IX block just has the dipstick in a different spot.
            Adam Fogg- '88 M3

            Common sense- It's the new 'gifted'

            Comment


              #7
              which would have to be filled and drilled if going into a rwd car cause of the different oil pan
              Originally posted by blunt
              can you get me a deal on cases of their (fiji) bottled water? i wash my 02 in that shit

              Comment


                #8
                B20 and B23 blocks are different as above, they have much smaller bore sizes for starters, they also use the distributor location on the side of the block (so they have a shaft from the oil pump for the distributor).
                Just a little project im working on
                - http://www.lse30.com -

                Comment


                  #9
                  Originally posted by Madhatter
                  B20 and B23 blocks are different as above, they have much smaller bore sizes for starters, they also use the distributor location on the side of the block (so they have a shaft from the oil pump for the distributor).
                  um sort of, ALL blocks (that i have seen-E30/E34) have the shaft for the distributor, only there is a plug over the hole for cars that use the head mounted dizzy. Whether they have the dizzy on the side of the block or head comes down to whether they are L-jet or moronic, so the only difference I know of is the steam holes and bore size as I mentioned ealier.

                  Comment

                  Working...
                  X