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1995 Rexair motorhome with a 460 fuel injected motor.Having a problem with the camshaft. It is distroying the distributor gear. The motor has been rebuild by a respectable company from Duluth,MN. Motor has 3,500 - 4,000 on the rebuild, it ran perfect until then. Started to take out distributor gears, it would wear it thin until it wore the gears off. I changed the oil pump, thinking it was dragging down the distributor causing the gear to go out. I got 12 miles on a new distributor gear and the same problem happened. I was told that there is shims on the front portion of the camshaft. I have not taken the water pump or timing chain cover off to check this yet, but hopefully you might have some advise to help me with this problem. Any help is so well appreciated!! Thanks in advance! James
I was browsing the internet looking for some info on my motor and i ran across your post by accident, keep in mind that Ford started to put roller cams in thier V8 motors starting in the mid 1980's, i dont know if you have a miss matched cam and distributer drive gear or what, but a non roller cam and a roller cam each have their own hardness, and also require thier own distributer drive gear, you should not miss match them, anything can happen if you do...
Sounds like the first gear went out and messed up the cam gear, or the gears are mis-matched, check your cam specs with the mauufacturer and ask if a gear was required with the new cam, if so and the builder did not install it, make them do it correctly.. Crane, Mullins, TRW all have a customer support group that can answer your issue......
I rebuilt a 1978 460 with new cam and distributor and after about thirty miles it destroyed the cam shaft gear and distributor gear. after re rebuilding the engine to remove all of the metal shavings i discovered that the distributors gear for that engine has two different holes for two different gear placements maybe this is related