Brian Crower

Nissan TB48

The Nissan Patrol is a four-wheel-drive vehicle, manufactured by Nissan in Japan since 1950. The car is available in Australia, New Zealand, South Africa, United Kingdom and the Middle East and it is in direct competition with the Toyota Land Cruiser. The Patrol is available with either two door (Short Wheel Base or SWB) or four door wagon (LWB, Long Wheel Base). The old Y60 platform is still manufactured as a military vehicle to Asian countries and the Middle East. The most popular Nissan Patrol engine is the TB48, which features a DOHC cylinder head configuration and variable valve timing placed on top of a rugged 4.8L engine block.

Stage	Description	Cam #	Adv. Dur.	Dur @ .050	Lift (in)	Lift (mm)	Kit #
	Street/Strip Specification Plug and play application. Short duration for nice street manners, slight lope at idle. Excellent all purpose spec. OEM spring OK.	BC0251 114°	264°/264°	222°/218°	.401"/.383"	10.19/9.73	BC0250
	Race Specification Longer duration profile, added rpm potential. Intended for fully built engine. Tuning and ECU mods recommended. Requires kit BC0250.	BC0252 114°	272°/272°	234°/228°	.428"/.404"	10.87/10.26	BC0250
	TB48 (Nissan Patrol)	Stock	256°/256°	214°/206°	.392"/.376"	9.95/9.55

Bucket Diameter: 1.200"

VALVE SPRING/RETAINER KIT
Designed for high rpm, BC valve springs are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC titanium retainers are CNC machined from 6AL4V round bar titanium to exacting tolerances.

Kit #	Spring #	Retainer #	Description
BC0250	BC1250	BC2250	Single spring, titanium retainer

Spring Pressure:
BC1250 Seat: 1.550" @ 80 lbs / Open: 1.050" @ 220 lbs / Coil Bind: 0.900" (no machine work required)

STAINLESS STEEL VALVES
BC valves are made from premium stainless steel, fully machined and swirl polished for ultimate air flow. Dished head for added weight savings and increased valve control at high rpm. Standard and oversize head.

Part #	Description #
BC3250	Custom Intake Valves (set/12). Specify head dia (37mm).
BC3251	Custom Exhaust Valves (set/12). Specify head dia (31mm).

PATROL 5.15L TB48 STROKER KIT

• BC 4340 billet steel crankshaft (108mm stroke).
• BC 4340 Pro Series steel billet connecting rods w/ARP 220,000 psi fasteners.
• CP aluminum forged pistons (any bore size, any compression ratio).
• 9310 nickel carbon steel alloy wrist pins.
• Ductile iron plasma top rings, tapered second ring, low tension oil rings.
• ACL Race Series bearings sold seperately.
• Fully system balanced and ready to install.

Kit #	Crank #	Rod #	Piston #	Desc.
BC0259	BC5259	BC6259	BC7259	108mm stroke

The BC stroker kit for the Nissan Patrol TB48 engine platform incorporates a 108mm stroke, steel billet crank, BC 4340 Pro Series connecting rods rated to 1200+ horsepower. Depending on bore size that you decide, the BC kit will take you up to a 5.15L with 100.5mm bore. As usual, each BC kit features custom CP aluminum forged pistons, 9310 alloy wrist pins, ring pack and buttons. Available in any desired bore and compression ratio for use in turbo or normally aspirated.

Stock Specifications:
TB48 99.5mm Bore x 102mm Stroke - 10.059" Block Height

 

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