Posts: 923
I am getting ready to try to rebuild my Bosch fuel distributor.
Looking for any advice out there. I have watched a couple you tube videos and it seems like something I can handle.
One question I have is what should I use to seal the unit?
Here's what I already have for options-20211118_095358.jpg
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Location: Florida: Pinellas County
Posts: 2,106
My VIN: 5003 Never placed Concourse
Club(s): (DCF)
I used gasket shellac compound, as suggested in the CIS Rebuild PDF linked to post #2 of:
http://dmctalk.org/showthread.php?352-K-Jetronic-System
-----Dan B.
Location: Stevens Point,WI
Posts: 2,469
My VIN: 6125
Not sure if this is one of the rebuild videos you've seen yet, but might be worth a watch. Similar K-jet unit from a BMW E21
Location: Leonardtown, MD
Posts: 9,004
My VIN: 03572
I one time considered doing this for others. I did rebuild one and used the shellac sealer. I did not like that sealer or any sealer because the two half surfaces are so perfectly flat and when they are torqued all the sealer has to go somewhere (fill the tiny holes in the metal plate). The originals have no sealer so if I ever do another one I would try it dry. I do have a granite flat block I could resurface each half on it with fine sandpaper.
Location: Olathe, KS
Posts: 1,668
My VIN: 11596
Never heard of shellac sealer. I would probably use Hylomar AF - it's fuel resistant and is made to fill those tiny microscopic imperfections between the metal gasket and the halves.
Andy Lien
VIN 11596 Jan 1982 build - owned since Nov. 2000!
Total frame-off restoration completed 2021-2023
Photography and Backpacking is life.
Was Fargo, ND
Now Kansas City
Posts: 923
Too bad there wasn't something you could just spray a mist on there then put it together. Almost like spray contact cement (but not contact cement)
What if I put gas resistant sealer on the halves then wipe it back off just leaving a residue?
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Posts: 923
I guess I could try putting it together without sealer. Nothing to lose. If it leaks pull it back apart and use sealer.
What about just a thin coat of grease?
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Location: Leonardtown, MD
Posts: 9,004
My VIN: 03572
There was a head gasket sealer that you sprayed on back in the day. Not sure if they sell that anymore.Originally Posted by SupercoolBill
Posts: 254
If you assemble it without sealant, make sure that all surfaces are spotless and there is no dust particles on it prior to assembly.
Grease? For? Grease wouldn't prevent it from leaking as it would just wash out.
Posts: 1,242
I use to use some red stuff made by OMC. (Boats) for metal to metal. It works great. I believe loctite also makes good product for that.
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Dave M vin 03572