danbur55
01-02-2014, 08:37 PM
as I part out an 85 250es, i'm wondering if or how many engine parts primarily, top end, cam chain, cam sprocket, head, etc. could interchange with an 88 300fourtrax engine? rings are same part #, some valves are same, piston and cam have slight difference (85 ha0 88hc4) in 2nd set of numbers. reason i'm asking have a project trx300 that cam chain must have jumped bent valve and rings just pretty much outlived their purpose. had a couple requests for some parts off the 250 but since it is complete (less carb, intake, exhaust) and runs I've been reluctant to remove just a couple parts. but had a thought that if head, cam, and chain parts as well as some top end parts could interchange to the 88 300 that could solve several problems for me. 1 make me feel better 2 get wife calm that I dot spend money on toy 3 clear space in garage so any info would be helpful (yes I am new to atv atc also 250 drive is 1/2" shorter, that's why I got the 250 with intent to just swap, well nogo) thanks in advance an be gentle