There is only one drainplug as far as I know. It is on the oil pump side of the block about 8" or so back from the pump. On some blocks there is alo an oil gallery plug about in the same area.
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| Author: | WyldeBill6 [ Thu Mar 06, 2008 6:14 pm ] |
| Post subject: | Block coolant plugs |
I have read in a couple places that there are coolant drain plugs in the block. My engine runs hot, so I thought that there might be some debris clogging the block. It sat for awhile before I bought it. I found one plug on the passenger rear side, but when I pulled it out, it was clogged with grease. I hope that was the wrong plug. If not, I don't think that is a good sign. Anyone out there know if I got the right plug, and if not, where are the plugs I'm looking for. Thanks for any help you can give. Thanks, Wylde Bill |
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| Author: | slantzilla [ Thu Mar 06, 2008 7:31 pm ] |
| Post subject: | |
There is only one drainplug as far as I know. It is on the oil pump side of the block about 8" or so back from the pump. On some blocks there is alo an oil gallery plug about in the same area.
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| Author: | 66aCUDA [ Fri Mar 07, 2008 6:19 am ] |
| Post subject: | |
Bill You probally pulled and oil galley plug. A word of caution with the "drain plug" that Slantzilla is talking about. Most of them on older enginges are rust welded in place. So shoot PB Blaster (not WD) for a few days before trying to remove. Frank |
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| Author: | Jopapa [ Fri Mar 07, 2008 7:07 am ] |
| Post subject: | |
IIRC, the plug should be a 1/4 NPT plug with a square "head" on it. If that's what you pulled, it should be the right one. I'd stick a small screwdriver in the hole and wiggle it around a bit to see if it'll let any coolant out. If you get coolant, it's probably a good assumption that the rest of the block (and likely the head) has a lot of gunk built up. I'd get some coolant flush at Napa and flush the whole cooling system out. I'll be doing that this summer with mine, along with installing a new radiator and heater core (or at least having new ones "standing by" in case I discover a leak that had been covered by gunk and remained hidden). |
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| Author: | WyldeBill6 [ Fri Mar 07, 2008 9:39 pm ] |
| Post subject: | Pulled the head today |
I pulled the head today to get a look at the cylinders before I ordered an engine kit. The cylinders look perfect. Not a mark on them anywhere. Either this motor was rebuilt sometime, or these motors are even tougher than I thought. I did find a couple of the coolant passages clogged with rust. Not much, just enough to impede water flow. I was able to poke through it with my finger. I'm sure that was what was causing the motor to run hot. Since I don't need to rebuild the bottom end, I can now afford to put in one of the Erson cams and have the head cut down a bit for more compression. I have a rebuilt head coming in on Tuesday, then I'll cc it and check the depth of my pistons to see how much I need to cut. Thanks to everyone for they're help. Wylde Bill |
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