top end question

sick 96 250 · Sep 9, 2006

darringer said:
I've never had much success determining the condition of a 2 stroke top end with a compression gauge. It can be misleading. Example: When I had my 99cr250, it would regularly pull 210-220psi compression. but after 1-1/2 years of use I tore down the top end and it was out of spec. It's better to pull the top end and mic the cylinder, piston, and the ring end gap to get a clearer picture of what's worn.

Hey dezryder, have you had issues with Wiseco?
I have been using them for a variety of bikes over many years with zero problems. Sometimes there are better alternatives than OEM.

I have never had any problems with wiseco as well, been using them in every 2t I have owned. Reason i dont go OEM is because my local dealer sucks ( so why support them?), the price it twice as high and I notice no difference between the two. The wiseco's seem to actually last me a tad longer.

Blarf, just take your time when doing the top end, it is rather simple, once you do it one time it will take you barely take time to do your next one when time comes. Good Luck on everything

blarf · Sep 9, 2006

thanx guys, i'm waiting for the top end kit to come next week and i guess i'll do it toward the end of next week. i keep reading that shop manual over and over.

dezryder · Sep 10, 2006

Yeah I have accually. But why I recomend OEM pistons is from experience. I ride euro bikes period. They have forged pistons as a rule...rice bikes don't for the most part. Wiseco would be a viable alternative for a cast piston. There is the difference, IMHO, So be it.

"Hey dezryder, have you had issues with Wiseco?
I have been using them for a variety of bikes over many years with zero problems. Sometimes there are better alternatives than OEM.[/QUOTE]"

darringer · Sep 10, 2006

That is exactly the reason I run the Wiseco piston instead of OEM Honda. Wiseco's are forged, OEM Honda is cast.

CsChuck14 · Sep 12, 2006

why do you have to remove the radiator to rebuild the top end?

crrod · Sep 12, 2006

CsChuck14 said:
why do you have to remove the radiator to rebuild the top end?

It is really easy since the hoses are already disconnected and it gives you that much more room.

sick 96 250 · Sep 12, 2006

you dont have to remove it, I never do, you just have to make sure it is fully drained

CsChuck14 · Sep 12, 2006

im about to rebuild the top end in my 03 xk 125 for the first time in about a week, and ill prob go with oem, wheres the best place to buy the parts

top end question

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