Posted January 25, 2006 - 06:22 PM
I will be primarily using this engine for MX racing. My goal is to be able to have both a race bike(Zongshen 124) and a wheelie bike(stock engine) in one. Ideally, I would like to have a stock wheelie bike and a $10,000 race bike, but most of us just aren't that lucky! Final question, how long does the engine swap take? Is it realistic to think that I can swap them back and forth from time to time?
Thanks for your help!
Posted January 25, 2006 - 06:41 PM
if u know what ur doing an engine swap should only take like 30 mins (thats how long it too kme to swap out my sdg motor with my crf50 motor)...just a matter of 2 bolts and hooking up the carb and wires
Posted January 25, 2006 - 11:09 PM
124 zongshen motor 395 shipped
kitaco inner rotor 279 (i bought mine used for 175)
ported & polished head
56mm piston bored
true 24mm mikuni carb...the one mine came with was pretty restriced in the middle....it's a good motor, the only downside to mine is that has the clutch on the crank...i'd try to get one with the clutch on the primary, but it's not a total killer..it'll run with a 13x drz if you've got two kids that weigh the same on the bike....
Posted January 26, 2006 - 05:16 AM
Posted January 26, 2006 - 05:23 AM
You've heard that they're bigger? Duh! The engine is 124 cc! It's more than twice the size of stock[EDITED]! So, I don't think you'll be dragging cases. And also, the Zongshen isn't going to last a week for jumping anything over a foot.
Posted January 26, 2006 - 06:37 AM
Posted January 26, 2006 - 10:40 AM
I have almost 600 miles on one of these motors on a CT-70 replica that gets ridden full maximum sustained throttle on the road and its held up fine so far.
Posted January 26, 2006 - 10:41 AM
Posted January 26, 2006 - 01:43 PM
So everything is cool with the Zongshen you have? Good power? Pretty basic installation? I dont want something that is going to be a weekend project just to swap back and forth.
Also, how does it run using the stock pipe? I read that these engines get real hot if you run the stock pipe.
Posted January 26, 2006 - 03:45 PM
I used all componets that came with the 124cc motor on the CRF bike because it was a rolling chassis only with no electricals.
I rode the XR 40+ miles in one afternoon on the Wayne national trails in Nelsonville with the stock pipe and airbox and it never got hot. The CT-125 never gets hot either riding on the road. Touch the pipe and youll get burned just like any bike though.
The installation is quite easy.Using the original throttle cable is the only big obstacle.