88 crank 85 jug no spacer plate?
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Thread: 88 crank 85 jug no spacer plate?

  1. #1
    Member evaneyeball's Avatar
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    88 crank 85 jug no spacer plate?

    my 86 250r motor was running until i broke the case but nother story for another day. like i said it ran and super strongly but when i took the motor apart it has a 87-89 crank a 85 cylinder a 86 piston and a 86 head ported or bored what ever you say to 23.5 cc with no spacer plate how is this possibly. CT ported the cylnder.

  2. #2
    Senior Member american opel's Avatar
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    ct is the only co that cut the top of the pistons.sorta reverse dome.thats the only possable way but still hard to believe.

  3. #3
    Member scrappy's Avatar
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    Can you post pics or at least post up the numbers you found on the connecting rod that was in the engine?

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  5. #4
    Member evaneyeball's Avatar
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    i can post the rest of the pics in a bit but crank says KAH 9 so long rod piston is obviously a 85-86 not cut is is a pro x from the factory still says 150 and IN on top. the cylinder sleeve says 85 and HA2 then the head was bored by some one to 23.5 cc ran with a cr head gasket. no spacer plate and the crank says KAH not KA4. or am i just stupid


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    Last edited by evaneyeball; 01-21-2020 at 02:38 PM.

  6. #5
    Senior Member acecarlos's Avatar
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    Quote Originally Posted by evaneyeball View Post
    i can post the rest of the pics in a bit but crank says KAH 9 so long rod piston is obviously a 85-86 not cut is is a pro x from the factory still says 150 and IN on top. the cylinder sleeve says 85 and HA2 then the head was bored by some one to 23.5 cc ran with a cr head gasket. no spacer plate and the crank says KAH not KA4. or am i just stupid


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    You asked, and I will answer; that's not a Honda ATC/TRX250R piston....it is a YZ250 piston setup in an OEM cylinder. With no cylinder decking, and a bit of dome work. Nothing real special, old school thinking.

    Askcarlos.com aka askbdtmotorsports.com, aka askmeanything250r.com....LOL

    Carlos
    matuus likes this.

  7. #6
    Member evaneyeball's Avatar
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    yz250 crank also its not the usual KA4 on the crank its KAH


 

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