Audi / VW

ENGINE BEARINGS
	MAIN BEARING SET
	Part#
	5M1644H	5M1644HX
Sizes	STD, .25, .50	STD
Oil Clearance	Standard	+ 0.001" Extra
Half Type	Upper & Lower
Material	Tri-metal
Min Std Shaft Size	2.1243in / 53.958mm
Max Std Shaft Size	2.1251in / 53.978mm
Min Std Tunnel Size	2.3228in / 59.000mm
Max Std Tunnel Size	2.3236in / 59.019mm
Max Wall at Crown	0.0985in / 2.502mm	0.0980in / 2.489mm
Max Overall Length	0.728in / 18.49mm
Notes	Set contain 6 x 1648H and 4 x 1644H shells. Use 1648H shell in #4 position as upper and lower.
Diagram        (Top View)

Engines VAG group 4 cylinder engines 1.6 1.8 2.0 16-20V (KR, PL, AEB, etc.)

Position	1,2,3,4,5,6
Pairs & PN	XP XP M 601U-PR M 601L-PR
Quantity	6
Crankshaft	57.978 / 57.958
Housing	63.000 / 63.017
Max Wall	2.499
Max Length	18.471

Engines: Audi 5 cylinder engines - 2.2T, 2.3 20V (3B, AAN, ADU, ABY, 7A)

Product detailed specification
Bore size	82.00mm
Stroke	86.40mm
JE Pistons compression ratio (CR)	9.25:1
OEM compression ratio (CR)	9.5:1
Dome volume (CC)	-3.6cm3
Compression height (CH)	32.66mm
Pin diameter	20mm
Features	Accepts Turbo and Nitrous, round piston skirt
Fits for	VAG - 1.8T 20V

 JE's patented Perfect Skirt coating makes piston slap, false knock, and cold-start wear a thing of the past.
For the first time ever, 2618-alloy pistons can be installed with piston-to-wall clearances near that of an OEM piston!

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Product detailed specification
Bore size	82.50mm
Stroke	86.40mm
JE Pistons compression ratio (CR)	9.0:1
OEM compression ratio (CR)	9.3:1
Dome volume (CC)	-5.70cm3
Compression height (CH)	30.70mm
Pin diameter	21mm
Features	Accepts Turbo and Nitrous; Round skirt
Fits for	Audi S4, RS4, A6 - 2.7 30V

JE's patented Perfect Skirt coating makes piston slap, false knock, and cold-start wear a thing of the past.
For the first time ever, 2618-alloy pistons can be installed with piston-to-wall clearances near that of an OEM piston!

Ferrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. To manufacture the valves we use special aerospace quality alloys, including the EV8-Z18, which provides high tensile strength. An exclusive two-step slow forging process ensures proper grain flow and virtually eliminates any damage to thematerial structure. The valves are then heat-treated and stress-relieved over a 48-hour period, which is the crucial base of our molecular integrity. These valves feature avionics-quality hard chrome along with a specially applied hard tip.

Part number: FCPPASTR815085/4
Manufacturer: FCP Engineering
Forged high performance pistons for various applications in nearly all engine types for racing and street use.
Made of 4032-T6, piston skirt is molibden coated.
Each set of pistons also includes rings and HD series pins.
Bore size: 81.50mm
Compression ratio (CR): 8.5:1
Compression height: 29.00 mm
Pin diameter: 22mm
Stroke: 95.50mm with 236mm diesel engine block
VAG - 2.0 16V Turbo
Connecting rod length must 159mm

Ferrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. To manufacture the valves we use special aerospace quality alloys, including the EV8-Z18, which provides high tensile strength. An exclusive two-step slow forging process ensures proper grain flow and virtually eliminates any damage to thematerial structure. The valves are then heat-treated and stress-relieved over a 48-hour period, which is the crucial base of our molecular integrity. These valves feature avionics-quality hard chrome along with a specially applied hard tip.

Ferrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. To manufacture the valves we use special aerospace quality alloys, including the EV8-Z18, which provides high tensile strength. An exclusive two-step slow forging process ensures proper grain flow and virtually eliminates any damage to thematerial structure. The valves are then heat-treated and stress-relieved over a 48-hour period, which is the crucial base of our molecular integrity. These valves feature avionics-quality hard chrome along with a specially applied hard tip.