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View Full Version : Getting 85 200x ... Mods


short4stuff
01-16-2004, 06:56 AM
Hey,
How would these mods do?
Cam (unsure of type) Any suggestions?
10.25:1 piston
new uni filter
xr200 carb (26mm)
pipe (cobra or DG)
porting

Then gearing.

I am buying a 200x with almost another complete bike except, forks, fenders, seat, one rear tire. Engine is seized and frame cracked.

Now I plan on doing the mods in time on the seized engine any suggestions of how to go about the seized engine?

Also how unreliable is this going to make the engine?
also will I NEED valves?
BigGreenMachine
01-16-2004, 08:54 AM
If the engine is seized, you may want to check your connecting rod and crank to see if they were warped, bent when it seized.

As for mods, how about a xr200r cam? If it seized then your cylinder may be scratched, maybe a slightly larger bore...
short4stuff
01-16-2004, 09:03 AM
Whats the best way to go about un seizing it and how do i check to see if the rod was bent or warped? also will a xr200r cam actually make a difference?
BigGreenMachine
01-16-2004, 09:29 AM
Not quite sure. Eyeball the connecting rod for a slight bend. Maybe after you have the crank out, put the connecting rod and bearings back on it and spin the crank while holding the connecting rod. Look at it to spot a wobble. Again there may be an easier way.
short4stuff
01-16-2004, 11:43 AM
ok, well i dont plan on taking the bottom end apart .... What would happen if i put a rachet on the flywheel bolt and just twisted? Also long at i was turning it so that piston was being pulling down i shouldn't break anything should I?
TimSr
01-16-2004, 12:31 PM
Engines seize because something broke inside. Youre going to have to take the top end off and look at it. The cause will likely be obvious.
short4stuff
01-17-2004, 09:56 PM
ok, so will all of these mods make it unreliable ?
BigGreenMachine
01-18-2004, 12:12 AM
These mods won't cause an issue with reliability. Just make sure everthing is set up to meet the demands of your other mods. For instance, jet you carb correctly to compensate for the added flow of porting, exhaust and filter.

I'm not sure if you need to run a higher octane fuel to get the most performance from your raised compression. Anyone?