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PostPosted: Thu Jan 17, 2013 2:44 pm 
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Joined: Tue Aug 28, 2007 5:28 pm
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Location: NOTTINGHAM
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Does any one know what the tightening settings are for a cylinder head fitted with the MLS gasket?
Also, what the valve clearances are as I need to order the new thinner shims?

Thanks.


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PostPosted: Fri Jan 18, 2013 9:44 am 
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Haven't been able to find a lot of info on this unfortunately, only a quote of 0.30 mm intake, 0.40mm exhaust - not sure how accurate this is. As a rough guide, if the engine you have is in good order they should technically be within spec as they are, admittedly this isn't particularly precise.

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PostPosted: Fri Jan 18, 2013 10:44 am 
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I'm having trouble with finding info also. I have had the valve seats re-cut and fitted new valves. The new type shims are nearly half as thick as the old type and finding a supplier other than fiat is proving a task.
I have ordered a factory manual off ebay so should have all the info needed.
It looks like I'll have to buy a cam setting tool as the pulley does not locate on a key like the old one. The key is there, but the slot in the cam is way bigger allowing many degrees of shift in both directions like a vernier pulley.


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PostPosted: Tue Feb 19, 2013 6:46 pm 
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I bought a Fiat e-learn CD for the Punto Grande, but it seems to quote the head gasket for the 1.2/1.4 8v as being composite?
It quotes 30Nm-90-90, but I'm pretty sure the compression of the gasket won't be the same for a MLS. The gasket is a Payen, but there is no info on their sites about this gasket. It seems more geared up for the American market and does not mention modern Fiat cars. Are they still upset about World War 2?

Any info/pointers would be great as the head is still sat at 30Nm. :)


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PostPosted: Wed Feb 20, 2013 10:04 am 
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Location: Northwich, Cheshire
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Im running a Payen MLS gasket on Rusty. I did 40nm 90,90.

Has done a fair few trackday miles and has been driven balls out most places and has been excellent, id never fit another composite gasket again to a fire engine.

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PostPosted: Fri Feb 22, 2013 11:39 pm 
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What you do with those later engines (grande punto, 500 etc) is lock the crank up with special too, have the cam pulley just loose on the shaft turned all the way in the slot to the front of the car with the cam locked in place with a tool that fits on far right top of head, fit belt then tension correctly, cam will turn where it wants to be in the slot. Torque cam pulley bolt up using torque wrench and counter torque/pulley holder bar, remove locking tools, spin over twice then re-check tools fit.

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PostPosted: Sat Feb 23, 2013 1:51 pm 
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benwyl wrote:
What you do with those later engines (grande punto, 500 etc) is lock the crank up with special too, have the cam pulley just loose on the shaft turned all the way in the slot to the front of the car with the cam locked in place with a tool that fits on far right top of head, fit belt then tension correctly, cam will turn where it wants to be in the slot. Torque cam pulley bolt up using torque wrench and counter torque/pulley holder bar, remove locking tools, spin over twice then re-check tools fit.

I know this.
It's just the head torque down settings I'm a bit unsure of.


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