This Is the gasket Seals 14,220+ psi of gas pressure while perfectly seals oil & water.

1.Each sealing areas, gas, oil and water are calculated for proper pressure
2. Strong against scrubbing during heat expansion
3. NBR for better Oil/Water seal on rough surface.


Comparison of Three different constructions of MLS metal gaskets
 


Power Enterprise
MLS Full Grommet



MLS Stopper Type


MLS Bead or MLS synthetic
Gas Seal at High Boost
Excellent
Good
Poor (Not suitable for high
compression and turbo engine)
Durability of head gasket
Excellent
Good
Poor (Fatigue on the beads)
Seal against Oil & water
Excellent
Good
Good
Production Cost
Cheaper than the stock gasket

1.Each sealing areas, gas, oil and water are calculated for proper pressure
2. Strong against scrubbing during heat expansion (Using Molibdenum Bonding)
3. NBR(Nitrile) pre-production coating for better Oil/Water seal on rough surface.

*Note: The Perfect seal must balance the 2 different forces, one at the edge of the cylinder wall (gas seal) and the second at the water & oil sealing. Power's unique design allows the gasket to seal evenly throughout the head, thus greatly reducing the chance of any head warp-age. In contrast, the stopper type of gasket where the primary sealing area may be secure, but at the extreme cost of deformation of aluminum surface and cooling inefficiency (which leads to excessive heat and head warp-age). Power has perfected the element of having bulletproof primary and secondary sealing capability that is second to none. are hard throughout the gasket making them only efficient at the primary seal. When a Stopper-Type Gasket is torqued down it forms unwanted grooves at the edge of the cylinder wall and concave grooves where the head meets the engine block. This uneven seal results in good primary seal but extremely poor sealing through the water jackets causing poor cooling properties. Sealing the head securely AND evenly will decrease the chances of catastrophic failure.

 Facts on the Power's True Grommet Metal Gasket.
1) 14,220+ psi of gas pressure rated, it shuts extremely high pressure gas cause by knocking. Fuel burns at high temperature of more than 2000 degree celsius and the gas pressure of 120-150 kgf/c instantaneously in a combustion chamber of a high powered turbo engines. Under these conditions, a cylinder head gasket must shut off combustion gas completely and the same time seal oil and coolant. A special grommets in Power Heavy Metal Gasket are designed to create a surface pressure (a pressure against gasket and head and cyliner surface) of 800-1000 kgf/c to withstand a gas pressure of 14,000+psi. It seems to be a "over kill" but Power's gaskets are made "warry free" for the world's top engine builders for many races with single gasket.
2)
The surface pressure of 800-1000 kgf/cm2 is the highest pressure recommended for OE aluminum heads without deforming the structure of the head. Other leading maker's stopper type multi layer gasket creates excessive 1400kgf/cm2 only on the edge of the cylinders, resulting in deforming the surface of head & block and loosing the surface pressure around water & oil holes due to uneven sealing pressure. To have perfect Oil and water sealing on the 15 to 20 micron surface, it requires minimum of 50kgf/cm2 ( 711psi) surface pressure around the holes with an excellent elastomic substance to fill the rough surface.
3.
It supports 800HP turbo engine's extreme gas pressure
4.
The surface of the "Heavy Metal Gasket" is fuzed (Chemical Bonding) with Nitrile Rubber know as NBR. The FKM material which commonly used in majority of leading metal head gaskets today for the purpose of lowering the production cost.
5.
Grommet area withstands against friction or scrubing between the head & block during the metal expansion
6.
when the engine overheats, or normally heating up to a proper temperature, the heat cause expansion of metal, called thermal expansion. Each different materials expands different rates. This is especially true with aluminum cylinder heads because its thermal expansion rate of two times as much as cast iron. The difference in thermal expansion rates cause the "scrubbing," where the head gasket can be torn resulting in loosing surface pressure in critical areas. This is one of critical time for inferior gaskets fails.


Engine
OD T(mm) Part # Type Price
VQ35
97mm
0.7 1001-GN411 MLS Stainless, full Grommet with Moribdenum & NBR $400
SR20
88mm
1.1 1002-GN221 MLS Stainless, full Grommet with Moribdenum & NBR $265
SR20
88mm
1.5 1002-GN223 MLS Stainless, full Grommet with Moribdenum & NBR $265
SR20
 87mm
1.1 1001-GN221 MLS Stainless, full Grommet with Moribdenum & NBR $265
SR20
 87mm
1.5 1001-GN223 MLS Stainless, full Grommet with Moribdenum & NBR $265
RB26
87mm
1.1 1001-GN211 MLS Stainless, full Grommet with Moribdenum & NBR $330
RB26
87mm
1.5 1001-GN213 MLS Stainless, full Grommet with Moribdenum & NBR $330
 RB26 spl
 88mm
1.1 1002-GN211X MLS Stainless, full Grommet with Moribdenum & NBR $330
RB26 spl
 87mm
1.1 1001-GN211X MLS Stainless, full Grommet with Moribdenum & NBR $330
RB25
 87mm
1.5 1001-GN233 MLS Stainless, full Grommet with Moribdenum & NBR $330
 EJ20
 93.5mm
1.1 1001-GF211 MLS Stainless, full Grommet with Moribdenum & NBR $330
 EJ20
 93.5mm
1.5 1001-GF213 MLS Stainless, full Grommet with Moribdenum & NBR $330
EJ25
101mm
0.8 1001-GF221 MLS Stainless, full Grommet with Moribdenum & NBR $400
EJ25
101mm
1.0 1001-GF222 MLS Stainless, full Grommet with Moribdenum & NBR $400
 4G/EVO 1-3
 87mm
1.5 1001-GM213 MLS Stainless, full Grommet with Moribdenum & NBR $265
 4G/EVO 4-8
 87mm
1.2 1001-GM221 MLS Stainless, full Grommet with Moribdenum & NBR $265
 4G/EVO 4-8
 87mm
1.5 1001-GM223 MLS Stainless, full Grommet with Moribdenum & NBR $265
 3S-GTE(I & II)
 87mm
1.5 1001-GT223 MLS Stainless, full Grommet with Moribdenum & NBR $300
SR20DET (inclu GTiR)
 91mm
1.2 MAZWORX (For 89.5mm to 90mm pistons) MLS with Moribdenum & NBR, 1000HP rated and improved water flow. $250 : MAZWORX Orlando FL. Call 407-281-1223 (attn: Mark)
$
B18C Honda 84mm piston
 85mm
1.2 New Race spec MLS Stainless, full Grommet with Moribdenum & NBR
$

How to select right size of gasket:

Standard of Gasket bore vs. piston size

Piston OD + 1.0mm to 2.0mm. The most of car manufacture design the gasket size
to be 1.5mm to 2.0mm larger than the piston OD
Caution:
Do not overlap the tip of gasket and champher area

(See the picture on the left)

Compression Ratio Changes by the thickness:

Example:
86mm stroke engine with 9:1 compression ratio can be reduced to 8.6:1 by adding the head gasket thickness, approx. 0.56mm.


          
Use 87mm Gasket for 86mm piston and 88mm for 87mm piston.                      Major Distributor for the 91mm gasket: MAZWORXl 407-281-1223 (Mark)


 
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