Oil Pressure Relief Valve.

[YnotGuzzi]

I am getting ready to swap the oil pan on my 2003 Cali EV 1100 for an outside oil filter pan. The G&G pan did not come with instructions which I found strange considering how much it cost. I have been reading the shop manuals and looking at photos. One thing I am concerned about is swapping the oil pressure relief valve to the new pan. Can I just swap it directly without changing the setting on the relief valve? The Guzzi shop manual is pretty specific on setting the valve with shims and washers and then testing it. I'm kind of glad I am temporarily incapacitated (broken foot) and have time to research this job instead of rushing into it and finding out after it's too late that I did something wrong. Any thoughts appreciated. Thanks in advance.

[bmc5733946]

You could make up a manifold and check it with air pressure.  I'm sure you can figure it out it's just a basic relief valve it really doesn't care what material it's relieving, pressure is pressure.  I'm not sure of the thread sizes, just take it with you to the auto parts store look for brass fittings and a pressure regulator or even just a gauge.  Plumb together and blow, you'll hear it relieve.  In reality if it's set correctly now moving it from one pan to the other should not affect the setting.

Brian

[YnotGuzzi]

You could make up a manifold and check it with air pressure.  I'm sure you can figure it out it's just a basic relief valve it really doesn't care what material it's relieving, pressure is pressure.  I'm not sure of the thread sizes, just take it with you to the auto parts store look for brass fittings and a pressure regulator or even just a gauge.  Plumb together and blow, you'll hear it relieve.  In reality if it's set correctly now moving it from one pan to the other should not affect the setting.

Brian

That's very helpful, thank you. Do you know if the pressure valve comes out as one piece? I looked at the schematic and couldn't tell. I noticed there is a spring in the mix and wondered if it would come flying out and disappear into the phantom zone.

[bmc5733946]

If I recall correctly the valve has a hex on the bottom of the valve near the pan, but the shroud may cover it, so maybe the valve will need to be disassembled to remove the valve.  I am quite sure it will be loctited in place and should be heated gently with propane or map gas to remove, heat the pan not the valve.  It should be red loctited when reinstalled as well.  Guzzi's loctite is usually colorless or slightly yellow in color.  I would just heat the area of the pan it screws into and attempt to remove it using the hex on the top and see how it goes.  If it comes apart it won't be difficult to reassemble, there isn't a lot of spring pressure or extension, keep the parts in order and CLEAN.  Tiny bits of crud (old hardened pieces Loctite etc.) can foul the valve and keep it open.  Don't over think this, it is no more complicated to disassemble and reassemble than a ball point pen.

Brian

[Dukedesmo]

I fitted a G&G pan with outside filter plus larger volume to my LM2. I refitted the existing valve into the pan but I did have to machine some material away from the inside of the pan for it to fit. I can't see why the setting would be wrong, assuming it was OK before? 

Of course I don't know if it's the same type of valve...

[Chuck in Indiana]

Don't over think this, it is no more complicated to disassemble and reassemble than a ball point pen.
This.
But. The only reason to check it would be if something has gone through the engine. It's nothing more than a piston in a cylinder with tension held by a spring. I showed a quick and dirty method of testing it in the Aero Engine rehab thread.