38Plyroadking Posted April 5, 2011 Report Posted April 5, 2011 Hey Guys, I have an oiling problem where the oil gage reads zero until the engine has run about 30 minutes. I blew out the line from the gage to the pick up on the block (down near where the oil filter line picks off the block, driver's side) but that didnt help. I verified that there is oil coming out of the pick up port so I now there is some, though it seems very little, oil pressure. I see from searching on this siteI gather that it could be the oil pump bypass valve/spring. I also see here that for the 230 its in the same area of the oil port (to the rear a little more) with a plug that has a square wrenching surface. On my 201 there appears to be the same type set up except its a hex head, it looks bigger, and it is right under the pickup. Would you guys confirm that this is the valve? If I take it out would all the oil in the filter canister spill out since the vavle is right below the filter? One more question. Is there a better place on the block to connect the oil pressure gage tube in order to get a better reading? Thansk for the help in advance!! Paul Quote
greg g Posted April 5, 2011 Report Posted April 5, 2011 You might want to check the pressure relief valve that is in the block. It is a plunger and spring affair that can get stuck allowing for low pressure in one spot and too high in the other. There is an access along the oil passage onteh drivers side of the block, between the oil fill tue and the genny. Hopefully some one will post some pics as they have been discussed on a few other threads. In the meantime use the search function for pressure relief valve and see what you can come up with. Quote
james curl Posted April 5, 2011 Report Posted April 5, 2011 The oil pressure valve is located just in front of the starter just above the oil pan, on my 41 Dodge 218 I have to take the two bolts out of the starter and rotate it up and out of the way to pull the hex nut. No oil should come out when you remove the nut, watch out and don't drop the spring that holds the by pass piston in place. Quote
38Plyroadking Posted April 5, 2011 Author Report Posted April 5, 2011 Greg, thats exactly what I am trying to do. I just want to verify the location of it on the 201 flatty of which when I searched here could not find anything on its location. I could only find the location for the 218/230. Is it the same location? I dont want to screw anything up as I have it running really well now. Thanks, Paul Quote
TodFitch Posted April 5, 2011 Report Posted April 5, 2011 Greg,thats exactly what I am trying to do. I just want to verify the location of it on the 201 flatty of which when I searched here could not find anything on its location. I could only find the location for the 218/230. Is it the same location? I dont want to screw anything up as I have it running really well now. Thanks, Paul Should be the same location from the late 190 cu. in. engine in 1933 through the 201s, 218s and 230s. Might have changed the bolts and springs, etc. But the location should be the same. Early and mid year 1933 190 cu. in. have a totally different setup but that should not affect you. Quote
38Plyroadking Posted April 5, 2011 Author Report Posted April 5, 2011 Thanks for all the help and quick replies. Paul Quote
38Plyroadking Posted April 6, 2011 Author Report Posted April 6, 2011 Don, This picture is EXCELLENT!!!!!! Thank you!!! Now I see that I should move the oil gage take off to the back #4 plug. I cant thank you guys enough. This site is great. Paul Quote
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