kujocku Posted January 27, 2016 Report Share Posted January 27, 2016 I have a 620 and I am presently building a Z24 frankenstein for it. It has a 280z 5 speed and I am going to use the flywheel from the L20b that I am replacing with the Z24. The way it will be built it will have maybe 180 bhp. With all that in mind I want a clutch that will grip. Recommendations? Quote Link to comment
datzenmike Posted January 27, 2016 Report Share Posted January 27, 2016 Yes a 240mm Z24 flywheel. This would allow the 240sx/Hardbody White Bunny clutch to be used. Look up White Bunny clutch mod on the internet 1 Quote Link to comment
datsunaholic Posted January 27, 2016 Report Share Posted January 27, 2016 Doesn't really make sense to use the heavier L20B flywheel (particularly with the smaller surface area clutch) with the Z24. Z24 flywheels are lighter and have bigger friction surfaces. 1 Quote Link to comment
kujocku Posted January 29, 2016 Author Report Share Posted January 29, 2016 Thank you for your responses. One other question, will a bigger D-21 240mm flywheel fit in the 280z bell houising for I believe my flywheel currently is 225mm ( off a L20b ). I'm thinking that the original flywheel for the 280z tranny was 225mm. Thanks Neil Quote Link to comment
kujocku Posted January 29, 2016 Author Report Share Posted January 29, 2016 I meant the z24 flywheel, I wrote d21, tho they maybe one in the same. Quote Link to comment
datzenmike Posted January 29, 2016 Report Share Posted January 29, 2016 All L, Z and KA series flywheels are the same diameter. The bolt hole pattern determines which size of pressure plate and clutch disc you can run on it. A 200mm flywheel isn't smaller than a 240mm flywheel, only the clutch diameter. Generally all 5 crank bolt L series engines are 200mm flywheel... naturally the exception is the '74 620 truck with the L18... it was a one year only 225mm 5 bolt crank flywheel. Six bolt crank flywheels... L20B car flywheels are 200mm and all L20B truck (620 and 720) are 225mm Z20 car flywheels are 200mm but the 720 truck Z20 uses a 240mm flywheel. Z22 car and truck are 225mm flywheel Z24 all use a 240mm flywheel. KA car are 225mm and truck (D-21) KAs are 240mm. Quote Link to comment
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