Cast or forged piston?

[Buddy L]

Bike just ticked over 100 hours so it's time to do it's first top end overhaul

Whats the best choice and differance?

#1 cast piston?

#2 forged piston?

#3 another genuine piston?

#4 Athena big bore


Ive only heard good things about the athena kits, who sells them localy?

[Buddy L]

Just found this, a good read.

http://www.motorcycleproject.com/mot...s-pistons.html

[Ktmboy]

#3. Its done 100hrs on an original. Why change for the cost of a few bucks.

[flyingcr250]

#3. Its done 100hrs on an original. Why change for the cost of a few bucks.

i agree, i always go with the factory piston kits.

[Stylo]

i agree, i always go with the factory piston kits.

Have to agree

[Rupe]

I was told Pro-x are the same as factor jap ones???



Ran 2 hi-comp wiesco pistons in my last kx250f with no probs and did heaps of hrs. Just have to warm the bike first.

[Buddy L]

I was leaning towards #3
But put the question out there.
Ill be giving Scott a call sometime soon.

[IIIRII]

Have you compression tested it to ascertain that it needs doing ?
Or are you just assuming because its done a certain number of hours it needs doing ?

[Buddy L]

Have you compression tested it to ascertain that it needs doing ?
Or are you just assuming because its done a certain number of hours it needs doing ?

The Later.

Its just for peice of mind,
The suzuki Manual recomends piston every 10 hours i think (under race conditions?)
The valves clearance are tighting up a little as well, so will be measuring and ordering some shims.
New chain sprockets as well, 80 hours on this set and the teeth have just started to round and curl.

So the bike will be getting a birthday.