My engine uses a seal strip in the crankshaft's rear end bearing cap, which also holds the seal plate. But I don't have access to such seal strips...can I just use silicon gasket maker? Or wouldn't be better: rubber strips I can cut, daub them with silicon gasket maker and then fit them?

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EDIT: Sooo...after some study, I came up with this: cut several thick cardboard strips as needed (keeping in mind the head gasket will add some thickness as well), then put them together like a sandwich or plywood by applying a very thin layer of silicone gasket maker in between. Pressed it for a day and then to use it, apply gasket maker all around.

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    What engine are you working on? These are the strips which goes down between the block and the main bearing cap, right? They are supposed to seal this section? We aren't talking about the crankshaft seal, are we? Commented Mar 11, 2017 at 22:38
  • Yes, the strips doing down between the block and the cap... Commented Mar 12, 2017 at 18:01
  • I've read how to seal these (in other engines of the same basic design), but for the life of me, I cannot figure out where or how. There is material you use to stuff into the hole, then push silicone down in after it to seal it. Then, when it's cured, you cut it off flush with the block. I'm just not sure where I read/saw this at or I'd give you specifics. Commented Mar 12, 2017 at 18:41
  • For those who care, I presume this is the engine the OP is working on. Commented Mar 12, 2017 at 18:58
  • I found these are commonly called "side seals". Here is something which might work for you. Commented Mar 12, 2017 at 20:32

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I fitted this type of seal to v8s that I built - the seal works on compression and the material mix is designed not to degrade with heat / time. If you replace it with something else - you suggest rubber - then you will need to consider if the rubber will degrade or soften over time - with the consequent downtime and costs of, maybe, removing the engine. You say you cannot get them locally - could you source and order them over the internet?

  • I have being told also to use thick cardboard daub with gasketmaker Commented Mar 12, 2017 at 18:02

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