Clutches

8740 Chrome Moly: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi

COMETIC MLS (Multi-Layer Steel) Head Gaskets provide maximum sealing performance for today's high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two materials. MLS gaskets have increased strength because they are comprised of multiple layers of stainless steel; which also creates the ability to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton (a flouroelastomer rubber based material that is heat resistant to 250 C/ 482 F). Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements.

Spring data:
Seat pressure - 82lbs @ 37.00mm
Open (lift) pressure - 180lbs @ 10mm
Spring coil bind - 24.90mm
Max lift - 11.90mm
Rate - 10.20lbs/mm
Spring outer diameter - 24.00mm
Spring inner diameter - 16.50mm

Set includes:
Single springs - 16 pcs.
Titanium retainers - 16pcs.

Athena Racing 338 series multilayer steel (MLS) cylinder head gasket.
Athena MLS gaskets are designed to suit the requirements of today’s competition engines offering enhanced sealing compared to the OEM product. The gaskets are assembled from 2-5 layers of high quality stainless and spring steels.
Part number: 338463R
Gasket thickness: 1.35mm
Bore size: 82mm
 

Spring data:
Seat pressure [email protected]
Max lift. 16.00mm
Rate 10.50lbs/mm
Spring coil bind 23.50mm

Set includes:
Dual springs: 16 pcs. SPR-M1005D
Titanium retainers: 16 pcs. RET-M65-T1
Seats: 16 pcs. SEAT-M1007D
Valve seals: 16pcs. VS-H6.6E