Announcement

Collapse
No announcement yet.

Oil restrictor jet in block going to head.

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

  • Oil restrictor jet in block going to head.

    Hi guys,

    I have researched this topic somewhat and I wonder if this jet is fitted to stock 2.3ltr road going engines or was only used in race engines.

    11111306874 is the part number, it is mounted to the oil feed hole in the deck of the block right near the left front cylinder head bolt hole.

    I've seen motors without them and some with them. When I built my 2.5 one was present, and now I am doing a head rebuild on my 2.3 and it does not have it.

    If it doesn't have it, should I fit it?

    My understanding of this would be it limits the volume of oil to the head, and prevents too much oil accumulated in the head at extended high rpms.

    Thanks in advance.

  • #2
    I was under the impression that ALL S14s used this restrictor. But, I've been wrong before.

    Comment


    • #3
      I vote yes fitted to all M3ís as well.

      E30 M3 1987
      Mini Clubman GT
      BMW E36 323 Msport
      Toyota Corona
      KTM 200EXC
      Honda CB50 (1979)

      Comment


      • #4
        I agree with Dave. The are all fitted with this jet.

        Comment


        • #5
          Ok looks like the jury has decided. It makes sense as on etk there is no special information for this part, so it is just fitted as per normal like any other part.

          Comment


          • #6
            Hey guys. Last nigth I tried to install the restricot jet but it is too tight. The OD of the jet is more than the ID of the hole in the block. Anyone encounter this before? Solution? Put jet in freezer? Hone out the bore a little?

            Comment


            • #7
              Just make sure there is small chamfer in the block and the hole is clean then from memory it is a light tap in with a hammer, you could try the freezer but I think once removed and put in position it would thaw out.

              E30 M3 1987
              Mini Clubman GT
              BMW E36 323 Msport
              Toyota Corona
              KTM 200EXC
              Honda CB50 (1979)

              Comment


              • #8
                Originally posted by basketcase View Post
                Hey guys. Last nigth I tried to install the restricot jet but it is too tight. The OD of the jet is more than the ID of the hole in the block. Anyone encounter this before? Solution? Put jet in freezer? Hone out the bore a little?
                Something is amiss. Should be a light interference fit....like soft taps with a small hammer should drive it in until it bottoms. For gods sake don't hone out the bore.... Maybe try another jet?

                Comment


                • #9
                  Yes it is obviously part of BMWs new parts policy of shit not fitting. The jet measured 8.5mm and the hole measured 7.9mm roughly. I put the jet in a cordless drill and ran it down till I had a tight interference fit. A 5 min job blew out to over an hour.
                  Thanks for the advice. If anyone has a spare jet or block I would be interested in knowing the diameters.

                  Comment


                  • #10
                    I have a old jet that I'll dig out of the garage this weekend and measure.
                    1988 M3
                    2007 Lotus Exige S

                    Comment

                    Working...
                    X