| In
early 2009, we worked directly with Cometic to develop a multi-layer
steel head gasket specifically for the early 2.0L Porsche 924 and 931
platform.
Cometic MLS
Head Gasket for 924 & 931
As
with some of our other products, this was a first for the 924 platform.
In addition to the 2.0L platform, we can also source MLS gaskets direct
from Cometic for all variations of the 924S/944/951 lineup, as well as
the 100.5mm and 104mm bore configurations on the 928 platform.
Benefits
Cometic
MLS (multi-layer steel) head gaskets are comprised of three or five
layers of stainless steel. The outer layers are an embossed viton
coated stainless steel providing a superior seal with excellent rebound
characteristics and are corrosive resistant. When we developed the 924
head gasket, for example, we delivered a block and two heads (one
normally aspirated and one turbocharged) which Cometic scanned for
geometry. The embossments form a ridge seal around all of the openings
on the head, including the bore, studs, and galleys.
MLS
head
gaskets reduce bore distortion and withstand extreme cylinder
pressures. As a result, they are ideally suited for high compression
and forced induction applications, such as 931s and 951s with boost
increases, or normally aspirated motors with high compression
or
superchargers. In addition, due to the unique multi-layer design, the
inner layer(s) can be varied in thickness to accommodate a variety of
scenarios relative to head and deck height, and fine tuning of
compression ratios.
Special Notes
- A
surface finish of 50 RA (roughness average) or finer, is recommended
for a proper gasket seal. Anything rougher may conflict with the gasket
design.
- The MLS gasket CANNOT
be used with o-ringed blocks or heads
- Head
torque specs remain the same as OEM
- Contrary
to some information on the internet, Cometic does NOT
recommend the reuse of MLS gaskets
| | 924
& 931 2.0L 88mm bore
3-Layer
MLS5-Layer
MLS
924S/944/951
2.5L/2.7L/3.0L
Select
cylinder bore and desired thickness. Default clearance on bore is .15".
Custom bores and clearances are available upon
request.
3-Layer
MLS
5-Layer
MLS
928
100mm bore
(2 required,
sold per pair)
3-Layer
MLS
928
104mm bore
(per side, 2
required)
3-Layer
MLS
Cometic MLS
Head Gasket for 944 |
