Hey all, Ive got as the title says an 89 cr250 with a 90 cylinder jug. The bike needs a top end as I heard some dieseling noises from it Wednesday and upon inspection I found the wrist pin and lower end which I replaced three seasons ago were still intact. What I found upon further inspection of some slight galling on the piston skirt was a small crack so it must've been piston slap i was hearing. The only problem I have is that there are two wiseco top end kits available PK1243 and PK1248, 1243 is for 86-89 and 1248 is for the 90-91 bikes does anyone know the difference I cant remember if I took this into account when building the engine
the piston in there was 614M06640 same part for both bikes on wiseco's page
thanks any help is greatly appreciated
the piston in there was 614M06640 same part for both bikes on wiseco's page
thanks any help is greatly appreciated