freaky510 Posted September 28, 2008 Report Share Posted September 28, 2008 I have a L18 with what i think is a L20 crank in it.Not sure tho so how would a guy tell what crank he got i dont know if you can tell they have been shaved down [/img]has a A87 stamp 21683 are the # Quote Link to comment
cg78 Posted September 28, 2008 Report Share Posted September 28, 2008 Call a machine shop they should be able to help you. Quote Link to comment
datzenmike Posted September 28, 2008 Report Share Posted September 28, 2008 The L20B has larger main bearings and will not fit the L16 or L18 block unless they are turned down. The L16/18 crank has five flywheel bolts in the end. An L20B and Z20/22/24 has six. The L20B usually has 'U60' cast on the rear throw. Quote Link to comment
datzenmike Posted September 28, 2008 Report Share Posted September 28, 2008 If you were to turn the L20B mains down to fit the L18 block you could over bore 1 mm to 85mm and fit Z20E (31.75) flat top pistons on L16 (133mm) rods. This would give you a 1950cc motor with an open chamber L20B head compression of 10.2 Basically an L20B in an L18 block. The drawback is the very short deck/rod length which would add side load to the pistons and not be good for high revs. This is why the L20B is 2cm taller than the L16/18. Quote Link to comment
yello620 Posted September 28, 2008 Report Share Posted September 28, 2008 Does anybody have pictures of a Z24 crank compared to a L20b crank, and maybe even a Z22 crank. I keep thinking of the Z24 crank in a Z22 block idea. Has anybody actually seen a Z24 crank that has been machined down? Jason Quote Link to comment
freaky510 Posted September 28, 2008 Author Report Share Posted September 28, 2008 yea mike. i think thats what he did. i dont rember all the info on the motor .i came in a dime i bought 6years back.it had a holley carb onit. I blew the ring walls out in the#1 piston and never got around to fixing it i do belive that it was a 120 crank with L16 rods and a z piston that was milled to a flat top it revd nice.didnt last long. Iam just thinking of building a L motor and looking at all the stuff i have and going with the craziest i can come up with :lol::lol: Quote Link to comment
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