Yamaha yz125 1989

Tim_Rudöfors
I just bought an 89 motor (3JD00)and it's an 88 cylinder on it (2VN00) are they compatible )
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Miezie666 11/5/2021 5:14am
11/5/2021 5:14am
You can bolt the older style topend on the newer bottom end, not sure if it has to be used as a set. 86-93 was one engine "family"
Tim_Rudöfors 11/5/2021 12:45pm
11/5/2021 12:45pm
Hej thanks for reply. I know it's fits the engine. It was mounted on the motor when I got it. But I just noted that the engine code (3jd00) and the cylinder (2VN00) was not the same so the engine is from 89 and the cylinder is from 88. And when I check for pistons the 88 is not the same for 89 same. But the seams to be the same size so what can be different any one knows?
Tim_Rudöfors 11/5/2021 1:00pm
11/5/2021 1:00pm
Okey it had a flat piston in it and like very little compression can it be that they put an 89 piston in it and the volym was to little? I have ordered an 88 piston so we will se if there is any difference

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