As I have said before the rails are whats important. I think they should be replaced every 75k or 5 years. I think this is way too often to do chains but every other time at 150k intervals works for me with the chain.
I have seen cars still in warrantee rattle on start up. I believe this condition is inherent in the design and capabilities of the tentioner. Since there is no way to prevent that occasional rattle, the way to security is through keeping tough rails in the beast.
Let me give it numbers. If 100 is absolutely secure then replacing the rails gets you 90. Adding the chain gets you 92. Doing just the chain gets you a 5.
IMHO maybe not so H.
Bosch Master, ASE Master, L1
33 years MB technician
Last edited by stevebfl; 05-17-2002 at 06:05 PM.