Quote:
Originally posted by priobe
Thank you SFfiredog for the explaination.
Whats usually the problem with the vavle springs and the distributor gear.
I know when they were building the motor they changed the gear but I am not sure what the springs were I think Titanium, does that sound right.
I know they make titanium valves.
Is there anything I could do to prevent any damage?
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There is any "damage" per se, but just more maintenance to perform.
The original distributor gear is cast iron which is not compatable with the billet steel of a roller cam.
The roller cam distributor gear is made of a bronze alloy that is "sacrificial", that is, the gear is designed to wear instead of the cam. Average life of a bronze distributor gear is between 10 to 20k, some more, some less.
Roller cam valve springs have a harder life than a flat tappet spring. They have a higher spring rate and the rapid opening and closeing rates of a roller cam (solid roller) build up more heat and fatigue the metal faster than a flat tappet spring.
The better the spring (read more expensive) the longer they last.
I have seen roller springs last 30k miles but on average it is much less. Your roller cam is relatively mild and I would expect long life for your springs as long as they are high quality.
Maintenence and inspection is the key to the longevity of your engine.