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Timing chain pitch: anyone know?

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Timing chain pitch: anyone know?

Postby WarthogARJ » Sun May 27, 2018 12:14 pm

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
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Re: Timing chain pitch: anyone know?

Postby andz327 » Sun May 27, 2018 1:59 pm

WarthogARJ wrote: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
mate your trying to be too technical, basically If you've got the timing cover off just fit new chain and tensioner,
Always fit ford chain and tensioner , it's worth the extra few quid, and replace the crank seal......OH NO what's that noise...... Ah its OK thats only the sound of peace of mind
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Re: Timing chain pitch: anyone know?

Postby WarthogARJ » Sun May 27, 2018 4:48 pm

Yeah ok, i can see that.
Is like always replacing seals, o-rings and gaskets even if the old ones seem ok.

To be honest i was thinking maybe i should do that: but it does look in good shape.
So i was trying to save a bit.

It’s easier on a motorbike or bicycle to measure chain wear, and easier to replace them too.
And they are much more exposed to dirt and salt etc, so can wear/corrode much faster.

Thanks: good advice.
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