Hi Everyone
I'm still in the reassembly stage (I'll be posting on the project and my discoveries once complete) and have two questions/concerns:
1. COMPRESION TOO HIGH? I've just completed a compression test. The engine has new pistons, rings, valves, valve guides, bearings and the head was shaved by 0.06mm by an engineering co. I've reassembled using standard block and head gaskets. I've oiled up the engine and oil pressure is good. On doing the compression test my readings are:
No1 220psi
No2 245psi
No3 230psi
No4 215psi
This looks way too high (an uneven). Would a thicker head gasket bring these readings down to a reasonable level and if so, where do I source one?
2. OIL PRESSURE SWITCH: I removed the original on teardown with no problem. I ordered a replacement as a mater of course from a reputable UK supplier. However, on attempting to fit it, I had problems getting it threaded and have now stripped the hole. On comparing the original, the thread pitch is tapered 0.9, whereas pitch on the replacement is tapered 1.0. Not a huge difference but obviously enough to strip out the aluminium hole. I now have a hole too big for either the new or old. Any suggestions for a work-around? I really don't want to disassemble the engine again to drill out and fit a coil.
I'm still in the reassembly stage (I'll be posting on the project and my discoveries once complete) and have two questions/concerns:
1. COMPRESION TOO HIGH? I've just completed a compression test. The engine has new pistons, rings, valves, valve guides, bearings and the head was shaved by 0.06mm by an engineering co. I've reassembled using standard block and head gaskets. I've oiled up the engine and oil pressure is good. On doing the compression test my readings are:
No1 220psi
No2 245psi
No3 230psi
No4 215psi
This looks way too high (an uneven). Would a thicker head gasket bring these readings down to a reasonable level and if so, where do I source one?
2. OIL PRESSURE SWITCH: I removed the original on teardown with no problem. I ordered a replacement as a mater of course from a reputable UK supplier. However, on attempting to fit it, I had problems getting it threaded and have now stripped the hole. On comparing the original, the thread pitch is tapered 0.9, whereas pitch on the replacement is tapered 1.0. Not a huge difference but obviously enough to strip out the aluminium hole. I now have a hole too big for either the new or old. Any suggestions for a work-around? I really don't want to disassemble the engine again to drill out and fit a coil.