Help to find an L20B flywheel in Europe

Engine, Transmission and related drivetrain.
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1600SSS72
Posts: 54
Joined: 15 Jan 2009 05:17
Location: Lisbon, Portugal

Help to find an L20B flywheel in Europe

Post by 1600SSS72 » 11 Oct 2018 09:50

I am rallying in Europe, Portugal, a ' 72 P510 with an L20B tuned to around 160 hp with twin 48 Webers and an FS5W71B gearbox from a 280ZX with 4.44 LSD Subaru diff.
Now, after 10 years of hard work with no big problems, we must replace clutch, a competition Helix, and flywheel is cracked.
Unfortunately I must have the only L20B engine around here, as the usual donnor 720 pickups were never sold here, so I need your help to know if in the Z family (the 240Z/260Z/280Z and 280ZX are common here) I can find a replacement f/w. with similar spec.
Thank you.

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zKars
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Location: Calgary Alberta Canada

Re: Help to find an L20B flywheel in Europe

Post by zKars » 11 Oct 2018 10:05

Other than having a 225mm friction surface, the 240/6/8 flywheels have the same ring gear diameter and 6 crank bolt attachment. You will have to buy the matching clutch.

There is also a 240mm flywheel for the 2+2 and turbo ZX cars that will 'fit', but that's overkill for you.

There are also aftermarket lightened flywheels out there that might be a reasonable choice, as the 225 flywheels and clutches will be heavier than the 200mm L20b flywheel and clutches.

1600SSS72
Posts: 54
Joined: 15 Jan 2009 05:17
Location: Lisbon, Portugal

Re: Help to find an L20B flywheel in Europe

Post by 1600SSS72 » 11 Oct 2018 10:22

Thank you.

datzenmike
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Re: Help to find an L20B flywheel in Europe

Post by datzenmike » 12 Oct 2018 22:48

All six cylinder and 4 cylinder 2 liters and more are 6 bolt mount to the crankshaft and will interchange.

They were drilled to accept either a 200mm 225mm or a 240mm pressure plate.

6 bolt flywheels can weigh either 29 or 21 pounds. So if you have a 225mm 29 pound wheel it will weigh more than a 240mm 21 pound wheel. Only way to know is remove and look on the engine side of the flywheel. The 29 (give or take a pound) wheel is solid on the back side. The 21 pound (again give or take a pound, I weighed on a bathroom scale) is scalloped on the front to reduce weight.

Image

BIG difference. I have a 280zx (non turbo) 225mm flywheel and it was the lighter 21 pound. The heavier are (usually) for 4 cylinder trucks that needs stored kinetic energy to get heavy weight moving.

The Z series gas and diesel as well as the KA series wheels will also fit the L20B.
"Nissan 'shit the bed' when they made these, plain and simple." McShagger510 on flattop SUs

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