Monkeybasher
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| posted on 27/2/08 at 05:26 PM |
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2.0l zetec head pulley differences. Help
Hi,
I just spent a few hours replacing the cylinder head on a 2.0l zetec engine. I got to the point of fitting the new idler pulley to find its 10mm
smaller at 60mm not 70mm like the one I took off . The idler is also in a slightly different position to my old head
Am I screwed and will I have to take the head back off and find the correct head?
Or shall I find a 70mm pulley fit that and see if the belt looks like it will work
Anybody got experience of this. The zetec is a 2000 and I thought so was the replacement head.
Any help at this depressing time would be gratefully received.
Cheers
Steve
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thomas4age
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| posted on 27/2/08 at 05:54 PM |
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If the pulley and it's carrier are also new I would suspect that for being wrong.
I would look into that before taking the head of again.
don't know much about zetec's though.
grtz Thomas
If Lucas made guns, Wars wouldn't start either.
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clanger
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| posted on 27/2/08 at 05:55 PM |
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Cheer up Steve, its only a chunk of metal.
Ford have a habit of tweaking engines and all the components that go onto engines throughout their lifecycle. Its possible that the new postion for
the idler is to compensate for its reduced daimeter. Ford porbably saved 0.0001p/idler from its supplier for ist reduced diameter.
Where did you get the belt kit from? As long at the parts fit together and you can get enough tension on the belt you should be ok.
Double check there's no piston to valve contact potential by rotating the crank, plugs out, by hand first though.
As a guide, the head should also have a date cast into it in the form of a clock type face with the two digit year surrounded the month it left the
foundry.
All the best
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r1_pete
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| posted on 27/2/08 at 06:28 PM |
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Are you using parts from a different phase of engines, i.e. a blacktop head on a silvertop bottom end? There are differences in cam belt runs between
the two, and the blacktop has solid lifters not hydraulic like silvers.
There are pictures of a blacktop motor in my archive, the pulleys acan be seen in some.
Rgds.
Pete.
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Monkeybasher
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| posted on 27/2/08 at 06:46 PM |
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Hi, thanks for the replies so far.
The bottom is a blacktop. The new head I thought was a blacktop too off the same year car, obviously not.
After a bit of research apparently some engines use two idlers and a tensioner. The engine I have is meant to use one idler and a tensioner. Maybe
the head I have is for the two idler setup.
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r1_pete
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| posted on 27/2/08 at 07:00 PM |
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Just checked on ford TIS disc, up to 01/99 there was an idler to the top right of the crank pulley when viewed from front, from 02/99 this was
omitted, the later model without the lower idler has a larger top idler wheel.
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r1_pete
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| posted on 27/2/08 at 07:07 PM |
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here's the schematics
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r1_pete
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| posted on 27/2/08 at 07:09 PM |
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and the later
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Monkeybasher
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| posted on 27/2/08 at 07:53 PM |
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quote:
Originally posted by r1_pete
Just checked on ford TIS disc, up to 01/99 there was an idler to the top right of the crank pulley when viewed from front, from 02/99 this was
omitted, the later model without the lower idler has a larger top idler wheel.
Sorry I cant seem to open them.
My engine does not have the lower idler but did have the smaller pulley on the head. On the head with the smaller pulley it is further to the
left(tensioner) than the head with the larger pulley.
Sounds like the larger pulley on the head is used with the lower idler.
It isnt looking good will investigate further tomorrow.
Thankyou for your help, I am very grateful.
Cheers
Steve
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Monkeybasher
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| posted on 27/2/08 at 07:59 PM |
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Couldn't wait till tomorrow, went out with a torch.
There looks like a threaded hole to add the second idler. That would be a result.
Thanks again
Steve
[Edited on 27/2/08 by Monkeybasher]
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