Hello folks - I’m considering changing the upper timing chain and sprockets on my '62 MKII - The noise its making certainly seems chain-related as I can change it depending on chain tension, but not eliminate it - it tends to change pitch and occur at different RPM depending on how tight or loose I make the chain.
If loosened: Noise is gone at idle, but you will hear the rattle at higher rpm and on overrun, when you let off the gas. Loosened means I can move the chain with ease, with finger pressure, upward off the slipper pad, exhaust side, about 3/8+
If tightened: Noise persists at idle, and has more of a tinkle sound. Tends to resolve at higher RPM, but you’ll hear it on overrun. Tightened means I can flex the chain, with more significant finger pressure, about 1/8 - 1/4 inch upward off the slipper pad, exhaust side.
I’ve also (sort of) verified that the lower chain tensioner is in place, and appears to be working - not the best picture, but looking from above:
S0 - with that, and the alternative being towing the car 30 miles to the shop, at some point, when they can get to it, I wondered if perhaps the chain and sprockets are just worn, and should be changed?
Looking at the chain and sprockets, and my book -it seems like a fairly basic operation - but I’d like to confirm that A) Its as straight forward as it seems and B) you can change the upper chain and sprockets without major disassembly.