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Engine Kits
- ZR4 Engine Kit
- 3 1/4" Bore
ZR4 3 1/4" complete engine kit, capable of going 7.90 with a 375-450 lb. package at sea level.
Kit Components: - ZR4 Billet Block (sleeved,bored and honed)
- ZR4 Billet head with o-ring stud kit
- ZR4 Billet head gasket (0.015. 0.021, 0.027, 0.032, 0.042, 0.060)
- ZR Billet side cover wiht hardware kit
- ZR4 Billet breather with hardware kit
- JRC 0.563 stroke Billet crankshaft with 1" journal
- Hardened crank gear with key
- Crank bearings
- Crank seals
- JRC 4.375" Billet connecting rod
- JRC piston with rings, 0.590 wrist pin, and clips
- ZR4 Billet camshaft (0.509" lift)
- Cam bearings
- 5/16" diameter lifters
- Dual valve springs
- Titanium intake and exhaust valves
- Multi-angle valve job
- Valve seats
- Full length bronze valve guides
- CNC ported intake and exhaust ports
- 27" 3-stage coated header
- Large port billet intake with hardware kit
- 40mm Carb boot
- 40mm Mikuni carburetor with velocity stack
- Air filter
- 3° Billet adjustable coil bracket
- JRC 3HP hot coil
- JRC billet 3HP flywheel
- Bosch spark plug
- Grooved billet starter nut
- Billet fuel pump bracket
- Walbro fuel pump
- 10' of fuel line
- Fuel filter
- Billet oil plug
- Oil drain kit
- Hardware Kit
BrandJR RACE CAR
Package Width24.4
Weight24.4 PG
Part CategoryPerformance Parts
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
