Hi,
Does anyone know the as-new timing chain pitch on Ford timing chains?
As in the distance from centre-centre of the pins for each link.
You can use that information to see if your chain has worn very much.
An indirect way is to see the distance the chain tensioner piston has extended: the more wear, the more it has to extend.
But that’s a measure of both chain and sproket wear.
Motorbike and bicycle riders do this chain measurement a lot: you measure the pitch of a lot of links to reduce your measurement error.
Rohloff even sells gauges for bike chains that do it: Go-No Go gauges.
Somewhere betwen 2 to 5% is the usual criteria for replacement.
But i don’t see anything where people do it on vehicles.
Except Manufacturers who do it on research on chain wear factors.
If nobody knows i’ll try to do it based on what the new chain probably was: i suspect there aren’t that many types used in Fords.
Or for that matter most diesel vans.
Alan