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> Proper PCV arrangment for a 2L, A little help please
North Coast Jim
post Aug 26 2026, 08:27 AM
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Have a newly rebuilt 2L in the car with 40 IDF Weber carbs which is running fine except for a RMS dripping oil. We believe we installed it correctly and took careful steps assembling the rest of the engine/flywheel/clutch/transmission. We believe that the crankcase vent system is not working properly which is pressurizing the crankcase as RPM builds, thereby pushing oil out the RMS.

My oil fill assy has a 022115542 PCV assy in it and a solid oil fill cap. I took the valve out to see if it was working. When I blow into the bottom it is initially open. Increased pressure it closes the valve. Seems backward to me. My oil fill tower has no vent in it.

I do know that when I got this motor, 6 years ago, the PCV assy was in pieces all captured in the oil fill assy. I took it out and reassembled it thinking it was correct. Maybe not ??

I have Len Hoffman heads when he sold them direct and the vents are capped shut per his instructions.

Any help is appreciated.
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emerygt350
post Aug 27 2026, 07:02 PM
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Yeah, I just went to Lowe's to look at options. My concern on any plastic or rubber cap is the heat. I found some electric box plugs but I don't want to put metal in a spot where it could fall into the crank. I need to think on this....
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JamesM
post Aug 28 2026, 08:55 AM
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QUOTE(emerygt350 @ Aug 27 2026, 05:02 PM) *

Yeah, I just went to Lowe's to look at options. My concern on any plastic or rubber cap is the heat. I found some electric box plugs but I don't want to put metal in a spot where it could fall into the crank. I need to think on this....



The area where the plug falls into is pretty isolated from the rest of the motor which is why you can find the originals just sitting below if you remove the oil tower. But if it falls out at all then its pretty pointless anyways. This is why i just used the aluminum duct tape across the area.
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