please help me

[juchertf100]

i just got my first atv its an 1984 200x it has a 185 motor in it the guy that sold it to me said he had the 200x motor in a box along with another motor i did not know the diffrence in the two at the time . the 185 does ok but decided that i want to rebuild the 200x and put it back in long story short neather of the other moters have a kick start or a clutch so can anybody tell me what motors i have the numbers are


tbo5 e 2236897
tbo5 e 2538924

can any one identyfy these motors and which should i rebuild ,nearest i could find out about them is there 200 but 200 what i dont know could be 200s or 200m i cant figure it out to buy parts i want to use the one with the most hp any help i would be greatful


paul

[MonroeMike]

tbo5 e 2236897 = 1983 200 (TB05E-2200009~)

tbo5 e 2538924 = 1986 200s (TB05E-2537514~)

[juchertf100]

so which is the better to use ,what is the diffrence in 200 and to 200s, is there a horse power diffrence.

[Frankencelery]

I'm talking without the benefit of knowing what I'm talking about (although that's never stopped me), but I would tend to go with the 200s because it's newer. I know for sure that the 200s engine will work on the 200X frame, because I have one that is eventually going into a 200x. What you have there is known in the community as an Auto-X. The original 200x is a clutch, and the auto-x conversion makes it into an auto-clutch. I guess I would also look at which one is more complete, and look at the condition of the plug to see how it was running.

[juchertf100]

the 200s is in peices but but every looks good but im gona rebuild it anyway which leads to the next question if i was to have it bored how far is safe to get the most power ...

[fabiodriven]

the 200s is in peices but but every looks good but im gona rebuild it anyway which leads to the next question if i was to have it bored how far is safe to get the most power ...

Contrary to popular belief, you will not gain any power from boring that cylinder as big as you can. You will gain very few cc's by boring all the way. You would be better off just honing and re-ringing or boring it .010 or .020 over.