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Thread: Indmar 340 Engine Block Plugs
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04-12-2020, 04:35 PM #1Junior Member
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Indmar 340 Engine Block Plugs
Looking for some advice... I winterized my 2009 Moomba last winter with some help from a DIY video on this thread. When I drained the engine by removing the engine plugs, I noticed that they were corroded and the holes were rusted. I bought new plugs but still having trouble getting them in. How do I get rid of the corrosion in the hole? I was successful with one plug I think. How far does it need to be screwed in? Not sure this is far enough. See my pic for example.
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2009 Moomba Mobius XLV
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04-12-2020, 06:28 PM #2
Re-tap the hole. I always remove the plugs then put them back in after drainage and poking the holes to release and accumulated rust deposits
09 21v LAUNCH
99 Outback LS. Sold
run your engine after you change your oil
68 th Member. WS420,HSE Revolution, OJ 466, Acme1157,1100 sacs,Kicker HLCD's n IX500.4, Supra Coolies
Doug
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04-12-2020, 08:53 PM #3Senior Member
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Use a 1/4" NPT tap and a little WD-40 to clean out the threads and then replace the original plugs with brass ones. Same for the v-drive drains. I just did mine this weekend.
2005 Mobius LSV
325 EFI
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04-20-2020, 09:44 AM #4Junior Member
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