Anyone here have had any experience,or comments about the new style multi layer metal head gasket for the 300tdi?planning to change the gasket soon so wanna know which 'direction' to go.
Multi layered steel gasket known as MLS are the best gaskets for high compression and boosted engines. They hold and sustain the tremendous pressure from performance engines.
The only way they will work is by ensuring you have an absolutely straight and level block and head surface since there is no way of it compensating for spaces like the conventional gaskets do.
You use a copper based high temp spray on gasket sealant on the gasket and mating surfaces. I usually undo the rivets and spray every layer before assembly.
So you must send out your engine head to be resurfaced by a machine shop and use an inch and a half resurfaced aluminum block with emery cloth to resurface the block. You can typically see where the block is low and where spots are high. I use a thick piece of glass with a feeler gauge afterwards to ensure the block is straight and level.
So MLS gaskets work fine but it needs completely straightaway and level surfaces.
Anyone here have had any experience,or comments about the new style multi layer metal head gasket for the 300tdi?planning to change the gasket soon so wanna know which 'direction' to go.
So do I have to use the copper spray on the gaskets and surfaces or is it my decision not to, why I ask is because the head is new so no high/low spots
These are the guys we get our MLS gaskets from. They have a good info page http://www.cometic.com/technical.aspx
They have made many custom gaskets for us with varying thickness for lowering compression when boosting engines.
They have a new sealant on their gaskets now but for insurance, we still used the copper spray sealant on all our builds, never had one fail.
sounds like bullh****
Since the standard gasket compresses and makes a seal, you will need the copper spray gasket sealant for all MLS head gaskets...... Edited....unless it comes with a seal coating.
This may well have been the reason for the failure of the gasket in my case as I was told that you just fit the same way as a standard gasket.
I fitted one on a perfectly straight block with a brand new head and it failed immediately. It was a Sh*tpart one though. After that I decided I would never use Sh*tpart again. But I digress, I fitted a normal Elring one and it was fine with that.
you fit new heads bolts and run a tap down the holes to clean the threads and then blow them out with a blow gun?