"86 Tecate & '86 KX250 cylinders interchange?

[DixiePlowboy]

I've found a cylinder and was wondering what the difference was if any.

[cr480r]

they are the exact same part

[DixiePlowboy]

Good deal!

Looks like mine will be moving sooner than expected. Thanks cr.

[tecat-z]

Actually the 85 kx is the exact same as 86-87 Tecate. But 86 kx cylinder retains the same bore and stroke. Porting was probably revised in 86 on the kx, but shouldn't be a problem. 87 up kx has a small bore long stroke engine design.

[DixiePlowboy]

Cylinder was worse than I thought.....bad as the one I have. I passed.

A shop I deal with in Mississippi has an L.A. Sleeve for an '86 KX250. Reckon it'll work?

[tecat-z]

Why not have your original replated? Or is it really bad, as in cracks, breaks or stripped threads.

[cr480r]

Actually the 85 kx is the exact same as 86-87 Tecate.

The '85 KX cylinder is not the same as the '86 KX or '86-'87 KXT... The '85 KX has smaller subs, a bridged main exhaust, and different valves... But it does interchange... The '86 KX cylinder is the same part number as the KXT cylinders..

[DixiePlowboy]

That's what I decided to do(replating). It does need repair due to a couple of cracks in the intake port (fins...whatever you call the two dividers/bridges in the intake port), but I'm pretty sure it can be fixed. I'll just have to find a plater that will weld on it a little.





Why not have your original replated? Or is it really bad, as in cracks, breaks or stripped threads.

[honda250sx]

US chrome in wisconsin or millenium technologies ought to be able to replate that and do all the necessary welding.

[Red Rider]

I just had Millenium Technologies strip, weld, bore, & replate my CR250R cylinder due to damage from a sheared waterpump driveshaft, and I'm very pleased with their work & turn around time.