gasgas durability

[widebear]

Well I guess its time to do a complete rebuild on my trusty 03-mc250. Five years almost to the day since I purchased the bike it started to develope an intermitent metalic knock. She came to me with only two mx track practices on it from a gentleman who relocated from Florida to Kentucky, where everybody apparently rides quads not bikes.Ive been so impressed with this bike. Hundreds upon hundreds of hours with no problems whatsoever, a recent leak down test shows zero leakage from my two year old top end job. I could gush on and on about this jem but I need to get ready to go riding. Got to try out my new 300 to 250 conversion job.

 

[honuki250]

Durability

Wild Bear, You said you've had the bike 5yrs yet its only been two yrs since you did a top end? So this is the second top end in 5yrs is that correct? How often do you ride and how do you ride? The reason I am asking is I am thinking of going back to 2 stroke after riding 4 strokes for over 14yrs and I am looking at an 2004 Gas Gas EC250. I am concerned but reliability and dependability. Any words of wisdom about GAs Gas? Thanks

 

[2 strokes 4 life]

It all depends how you ride and how often you service the bike. My bike always had the filter changed after every ride and oil every 2 rides. My top end has about 160 hours of hard ridding on it. Over this winter I am going to do a big bore although I could get away with ridding the stock top end for another season.

 

[widebear]

Wild Bear, You said you've had the bike 5yrs yet its only been two yrs since you did a top end? So this is the second top end in 5yrs is that correct? How often do you ride and how do you ride? The reason I am asking is I am thinking of going back to 2 stroke after riding 4 strokes for over 14yrs and I am looking at an 2004 Gas Gas EC250. I am concerned but reliability and dependability. Any words of wisdom about GAs Gas? Thanks

Yes the mc-250 had only one top end job done that was in 2006. I recall the clearances were very tight using a honda spec wiseco piston , one and a half thou piston to wall so I heat cycled it very carefully.I rode the bike alot but not exclusivly as I also had a 300 that I purshase new in nov 05. This year I rode, we are talking only motor running time here , 150 hours, most of that on the 250. so for the mc-250 a total of 200 hours running time on that top end?.I did a leak down test a few weeks ago on the 250 and it indicated zero ring leakage, I have retired the bike but have not looked at the piston. The other bike I ride started life as a 300. It just got converted to a 250, thanks motowest. I would guess it has 150 hours to200 total running time. It has never had anything repair wise done to it , original piston looks good enough to be re rung!with very little blowby on the piston. Both bikes were run exclusivly on amsoil at 100-1 ratio and started life and remain as A size cylinders. As far as your question as to how hard are the bikes riddin, , hard enought to keep up with master and expert leval riders on 450's and 5 and a quarters, . I even did a 100 mile duall sport ride on the 300 with guys riding 650,s, suffice to say that one that one I was religated to hind teat but with 47 tooth rear sprocket I was still able to lope along happily at 50 mph.