smart51
Established member
I've read in different places on the internet that the 500R had the same camshaft as the 500F or the same camshaft as the early 126 which it shared the engine with. Does anyone have a definitive source on the matter?
As said elsewhere, I'm chasing a bit of power loss on my car. Thinking through where the power could be going, I've turned my attention to the valves. When I replaced my fuel pump, I noticed that the push rod stroke isn't as much as it should be, which made me think that perhaps the cam is worn.
I've just looked under the rocker cover. The valve clearances are good. The battery has died in my vernier callipers but measuring the valve lift with a ruler suggests the push rods are moving the rocker arms by 5.5mm. The 500F cam should be 6.1 and the 126 cam should be 6.2. I'll double check tomorrow when I've got a new battery. Either way, it sounds like a lot of wear.
As said elsewhere, I'm chasing a bit of power loss on my car. Thinking through where the power could be going, I've turned my attention to the valves. When I replaced my fuel pump, I noticed that the push rod stroke isn't as much as it should be, which made me think that perhaps the cam is worn.
I've just looked under the rocker cover. The valve clearances are good. The battery has died in my vernier callipers but measuring the valve lift with a ruler suggests the push rods are moving the rocker arms by 5.5mm. The 500F cam should be 6.1 and the 126 cam should be 6.2. I'll double check tomorrow when I've got a new battery. Either way, it sounds like a lot of wear.