| Cometic Multi Layer Steel Head Gasket - ::PAGE EXPIRED::0000 91.95 |
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MLS (Multi Layer Steel). The Cometic MLS gasket is comprised of three layers of Stainless Steel. Cometic uses Stainless
steel for increased strength, it’s ability to rebound and corrosion resistance. The outer layers of the gasket are
embossed and coated on both sides with a flouroelastomer rubber based material (Viton) designed to meet the demands of a
variety of harsh sealing environments, load conditions and surface finishes. The Viton coating is heat resistant to
2500C or 4820F. The centre or shim layer of the gasket is comprised of an uncoated Stainless Steel layer, which can be
varied to accommodate multiple thickness requirements. The MLS gasket is ideal for both
aluminium heads to cast iron
blocks and aluminium heads to aluminium blocks. For the 944 Turbo - but can be used on other models with the 2.5 litre 100/100.5mm bore block. This gasket is ideal for race car use or for cars running in excess of 1.0 bar of boost pressure and seeing considerable track day action.
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Installing a Cometic MLS (Multi Layer Steel) Head Gasket
The first thing you must do before installing the gasket, check all associated hardware thoroughly for nicks, scratches, or
damaged threads as well as checking all threaded holes. If the hardware is inadequate or damaged, gasket failure may be eminent.
Also chase all the bolts and tap all threaded holes with the appropriate thread chase or cleaning tap. All hardware and mating surfaces
should be free from any old sealers, rust, or carbon.
Check your dowel pins as they register the gasket and head into proper location. Replace worn or damaged dowels. The gasket mating
surfaces must be smooth 50RA or finer. Additional sealer is not required with Cometic MLS Head Gaskets. The outer layers of the
gasket are coated with a .001" thick coating of Viton (a high temperature flouroelastomer).
Check brass rivet location to ensure the brass rivet does not interfere with the sealing surface on both the block and head. If the
brass rivet needs to be removed a pair of side cutters will give the best results. Remove only the brass rivet.
Once the gasket is in position double check all passages and overall fitment paying special attention to the bore and chamfer. The
gasket should not fall in the bore or lay on the chamfer in any area. A gasket lying on the chamfer or in the bore will most likely cause a
hot spot and lead to pre-ignition, possibly causing severe engine damage or gasket failure.
Head Gasket Torque Procedure
If you are using studs or head bolts, torque hardware to the manufacturers specification. Fasteners works like a springs and must
have proper Torque or Stretch applied to carry the correct amount of clamp force. Also use the proper lube or thread sealer for the job.
All fasteners must be final torqued before thread sealant cures to achieve proper torque.
Torque the fasteners in the correct sequence. It is critical to follow manufacturers torque sequence to apply clamp force evenly.
A smooth continuous motion is important for every torque sequence. Re-torque is not necessary unless using hardware that has not
been heat cycled.
Delivery Time: Next Day (Item in stock for S2, Turbo is 4 weeks). Price includes 1st class Royal
Mail delivery to any UK Mainland address. The following payment methods can be used:
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