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Author Topic:   Strange engine problems........any ideas?
posted August 04, 2003 02:15 PM
Small block Chevy, have ran this engine all last year, and up until two weeks ago, no problems.

Two weeks ago, the right side rear freeze plug came out in the feature. I re did the engine, new bearings and had the heads rebuilt. Last weekend, same scenario. The rear freeze plug keeps popping out of the block. The block is not cracked, and i cant find any reason that this keeps happening.

Any ideas?

[This message has been edited by pdub25 (edited August 04, 2003).]

posted August 04, 2003 03:57 PM
yes i have ran into this problem many times the freeze plugs holes over the years on some motor actually get worn out and that size plug is just to loose the thing to do is put some teflon sealant around it then ping it in making sure that you ping it in many different places this will help you out

posted August 04, 2003 06:17 PM
i have seen them tig welded in before too.

rico 08
posted August 04, 2003 07:05 PM
Try the rubber expanding type replacement freeze plug.

posted August 04, 2003 09:15 PM
wont the rubber type cause a restriction?

GO 24
posted August 05, 2003 02:17 PM
I've used the rubber ones also many times with no problems, iowa dirt track girl was right--usually the hole just wallows out alittle over time.

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