295cc stuck oil passage plug

langted · 01-30-2013, 10:51 PM

After apparently starving my engine for oil and seizing a rod bearing, I was trying to install an oil pressure switch. (My EZ does not have a switch or a gage.) There appears to be a choice of two passages from the oil pump discharge. One on top of the oil pump just before going up to the camshaft feed, the other more on the front. Both are drilled passages with the same size allen head pipe plug (1/8" NPT?)

HOW IN CREATION DO YOU GET THESE THINGS OUT??? ARE THEY EPOXIED IN???!!?!

I really don't want to drill them out, but now is the time, before the motor is assembled so I can control chips. I tried some heat, but I don't want to break or warp the crankcase cover.

Ted

langted · 02-08-2013, 09:11 PM

Heat!! I applied PB penetrating oil 3 or 4 times over a couple days, then heat. Propane was insufficient, but MAAP gas was just intense enough. Enough heat and enough PB, and they came out with almost no force. Small concentrated intense flame right on the plug.

Now I just need to figure out the thread size to fit the gage sending unit.

Ted

wide'iwas · 02-08-2013, 10:25 PM

I bet its metric

langted · 09-05-2013, 05:38 PM

It turned out to be 1/8th inch British Standard Pipe Taper (BSPT). I found the fittings at a hydraulic hose supply store.

wide'iwas · 09-05-2013, 08:54 PM

ya in plumbing they call it British standard...haha..

01-30-2013, 10:51 PM	#1
langted Not Yet Wild Join Date: Jan 2013 Posts: 17	295cc stuck oil passage plug After apparently starving my engine for oil and seizing a rod bearing, I was trying to install an oil pressure switch. (My EZ does not have a switch or a gage.) There appears to be a choice of two passages from the oil pump discharge. One on top of the oil pump just before going up to the camshaft feed, the other more on the front. Both are drilled passages with the same size allen head pipe plug (1/8" NPT?) HOW IN CREATION DO YOU GET THESE THINGS OUT??? ARE THEY EPOXIED IN???!!?! I really don't want to drill them out, but now is the time, before the motor is assembled so I can control chips. I tried some heat, but I don't want to break or warp the crankcase cover. Ted
langted Not Yet Wild Join Date: Jan 2013 Posts: 17

02-08-2013, 09:11 PM	#2
langted Not Yet Wild Join Date: Jan 2013 Posts: 17	Re: 295cc stuck oil passage plug Heat!! I applied PB penetrating oil 3 or 4 times over a couple days, then heat. Propane was insufficient, but MAAP gas was just intense enough. Enough heat and enough PB, and they came out with almost no force. Small concentrated intense flame right on the plug. Now I just need to figure out the thread size to fit the gage sending unit. Ted
langted Not Yet Wild Join Date: Jan 2013 Posts: 17

02-08-2013, 10:25 PM	#3
wide'iwas Getting Wild Join Date: Aug 2012 Location: lake villa, ILLinios Posts: 98	Re: 295cc stuck oil passage plug I bet its metric

09-05-2013, 05:38 PM	#4
langted Not Yet Wild Join Date: Jan 2013 Posts: 17	Re: 295cc stuck oil passage plug It turned out to be 1/8th inch British Standard Pipe Taper (BSPT). I found the fittings at a hydraulic hose supply store.
langted Not Yet Wild Join Date: Jan 2013 Posts: 17

09-05-2013, 08:54 PM	#5
wide'iwas Getting Wild Join Date: Aug 2012 Location: lake villa, ILLinios Posts: 98	Re: 295cc stuck oil passage plug ya in plumbing they call it British standard...haha..

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