96 fc 501 vrs 02 FX 470

dougn1 · Nov 5, 2008

what's different about the valve train between these two engines? the reason i ask is my 96 went for several hundred hours without a hiccup, aluminum camwheel and all....why didn't the 96 tulip the valves?

oyk · Nov 5, 2008

dual valve springs instead of conical= less force on to the valves.
plus the camshaft has less brutal profile.

actually early 1996 models and later 1996 models had a different cylinder head+oil pump.

dougn1 · Nov 5, 2008

i thought i recall only one valve spring on the 501. also....are you sure the cam profile of the 470 is worse?

oyk · Nov 5, 2008

2 springs.

if your motor is an earlier 1996 (44mm water pump, 10mm rocker shafts) then yes the cam profile is milder. the shoulders are more round.

somewhere i have a comparison photo i think...

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96 fc 501 vrs 02 FX 470

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