Chevy truck mechanic

55 50 Ron · Nov 2, 2009

Back on Oct 23,09, I posted asking for help to get a drain plug out of the block on a 235 6 cyl Chevy engine. The plug was mostly destroyed in feeble removal attempts and even had a broken off drill bit in it.

I got several good ideas from posters here. I thank each of you. I was successful today after trying some of your suggestions.

The new plug is installed and I had the engine running again. Still have to get the block cleaned better, but I'm a very "happy camper". Thanks again.

teddy52food · Nov 2, 2009

So, how did you get it out?

old · Nov 2, 2009

That is the same pan as on the 250 which is pretty much a bored out 235 so how did you remove it should not have been a big deal since that is/was a common engine and still is today. I know I only have 3 or 4 of them 250s laying around in my shop

IHC Red · Nov 2, 2009

I had a "51 Chev 3/4 ton for a while. I put a 235 in it. It was a fun little rig.

greenbeanman in Kansas · Nov 3, 2009

Block drain, not oil pan drain if I am reading correctly.

BDT in Minnesota · Nov 3, 2009

Old, the 194, 230, 250, and 192 are a newer family of engines that were born and raised in the sixties.... the older 216, 235, and 261 family were an older group of engines and had four main bearings and lacked a full flow oil filter.. the 216 and early 235 also had babbit connecting rods. In the early fifties, the 235 received aluminum pistons and a an updated crankshaft which used bearing inserts instead of the babbited rods. Mid fifties, the 235 recieved an "internal" water pump..the older pump was not recessed into the block..these go waay back in time..
The 235 was last used in 1962.....

BDT in Minnesota · Nov 3, 2009

opps 194, 230, 250, and 292 family not 192

BDT in Minnesota · Nov 3, 2009

Ron, Did you place a nut over it and weld to the plug from inside the nut??? Warm it up and wax it?? Blow it out with a steady hand on the torch? Now that you got that bugger out, you DID replace it with a brass plug; didn't you??

55 50 Ron · Nov 3, 2009

Yes, block drain.

55 50 Ron · Nov 3, 2009

Yes, I replaced it with a new brass plug. But the old one was brass also.

To get the old one out I used a couple of different diamond cutting bits in an angled drill and cut away part of the boss on the block. Sprayed with Kroil a few times and let it set. One diamond cutting bit was 1/8 inch diameter and with it, I cut straight down from the top until that bit was into the center of the brass plug where the broken off drill bit remained. Then I squeezed gently from the sides with a small visegrip pliers and the brass plug sides moved inward just enough to be able to turn it slowly. Then it was easy to pull the broken bit out. Ran a tap in the boss threads and put in the new plug. The block is still full of crud, but I'll get that cleaned another time.

55 50 Ron · Nov 3, 2009

See my explanation above.

55 50 Ron · Nov 3, 2009

BDT in MN,

Where in MN do you live? I'm in south central, Waseca County.

BDT in Minnesota · Nov 3, 2009

Near Erskine in Polk county... (Junction of US 2 and US 59......)Northwest part of the state.

Chevy truck mechanic

55 50 Ron

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teddy52food

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old

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IHC Red

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greenbeanman in Kansas

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55 50 Ron

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