I have a generator engine (3408--67u3811) block number 4N80 this engine has low hours and is a good runner I also have a marine engine (3408 --- 99u03960) block number 7n850 this engine has a bad block The marine engine parts are all good, and I want to remove the generator front and rear covers and switch them so I can add the marine parts to the generator block leaving the heads and pistons liners and injector pump (governor removed)intact Is this a feasible endevor ?
Didn’t we already do this back in February? I would get a paper copy parts book for each engine and start comparing part numbers. You are going to discover many differences in the rotating groups.
Still trying to get this project done , getting old and slower. I have found that cat is very. good at changing part numbers, it gets to be very confusing. Just hoping that if someone has done a project like this will add feedback
Here's a brief comparison rundown between 67U3811 & 99U03960, considering updated Part Numbers, etc, etc. Cylinder block - same. Crankshaft - same. Front & rear gear groups - same. Regarding cylinder heads, camshafts, and piston/rod group. Due to the age of both these engines there is no detailed information available. Need the Arrangement Number for both engines in order to dig deeper.
Thanks much that's what I needed to know
99u03960 ar 8n6663 67u3811 ar 8n3908
OK, so the common parts list between the two arrangements becomes longer........... Engine oil pump, water pump, front housing, oil pan, fuel priming pump, fuel filter assembly, camshaft, cylinder heads, valve mechanism & covers, engine oil cooler, crankshaft damper.
Now to the major differences.......... Pistons & connecting rods. They will interchange as complete assemblies including the big end bearing shells. Don't try to "mix & match". Flywheel & flywheel housing. Fuel injection pump, governor, fuel/air ratio control. Interchange as a complete assembly. Fuel injection lines and injectors. Ditto. Ask if there is anything I've missed that you are particularly interested in.
that is a tremendous help thank you