auto 200x questions [Archive]

parkerwarn

10-19-2015, 01:03 PM

What is the best piston for an auto x? Wanting power but reliable, cheaper is better, and where can I get the piston cheapest?! Also wondering what are some other cheap mods?

RUNMEDOWN

10-19-2015, 03:06 PM

I went with a wiesco (SP?) 10.25:1 high compression in my recent Auto-200x build, you can pick then up for around $75 with rings online if you look long enough. Also be sure to at the very least have the cylinder honed if you are swapping pistons, and re-jet if going to a high compression. Also if you are in the motor already;swap in a Cam, you can find them for $20-$40 online as well (XR200 or XL200 or a webcam), and of course a new cam chain.

joels

10-19-2015, 09:40 PM

Hello, im just wondering what an auto 200x is. Im guessing a 200x with a 200s engine?

RUNMEDOWN

10-19-2015, 09:45 PM

Hello, im just wondering what an auto 200x is. Im guessing a 200x with a 200s engine?

Yup. Great on trails and snow. Also great for people (me) that are not great at working a clutch

joels

10-20-2015, 07:23 AM

Yup. Great on trails and snow. Also great for people (me) that are not great at working a clutch

I looked into this years ago when i had a 84 200x and i remember the rear brake pedal wouldnt work with a 200s engine in a 1984 200x frame. I just wanted to mention that if you havent noticed it yet. Im not sure what year you are doing, maybe the 2nd gen 200x's are different.

Crazyktmmatt

11-29-2015, 02:41 AM

Just have to use the right brake lever is all.

quy90jeep

12-02-2015, 07:17 AM

I personally would rather a clutch. However, descent 200s bottom ends can be had on a budget. And my atc is my beater compared to all my other toys. The xr200 cam in the 200s motor really wakes the engine up. The 200s also used a 7.8:1 compression piston(if original or built to original spec). A 200x piston is about 9:1.

I found (and own) a brand new 200x piston (Shindy brand) for 40 dollars new.
I decided to run the wiseco 12:1. It was cheaper due to less consumer interest. And I have no issue with race fuel blends

But, my suggestion would be a wiseco 10.25 CR piston(you might be able to find a piston kit with gasket and valve seals, proper honing, xr200r camshaft, inspect timing chain guides and a new chain. I think it'll wake the motor up plenty