[PudrowDSM]

After looking around I decided the Pitsterpro 140cc would be a good swap for what I needed for right now. I still have some other parts I need before its good to go. Here are some pics of the little project so far.

Rolling chassis

82cc bored out motor... Bye lil fella!!

140cc motor ready for swap!

Bolted in...

Bare essentials to get it running...



Here is a quick video shot of the new motor running.

Let me know what you guys think so far!



Travis

 

[5!OH!4]

ha i almost bought that engine too.. but i just went wit the tb 88 kit... let me know when u get a vid up wit riding it.. id like to see the power

 

[PudrowDSM]

I should have the rest of the stuff needed for the build by this week. Only thing left to buy is new set of foot peg mounts and foot pegs that clear the new motor. I'll definitely have some more pics and vids up when its all complete!!



Travis

 

[5!OH!4]

i knew i shoulda got that motor.. everyone been saying it was too much for that bike.. but i think it will be badazz with the longer swingarm and forks

 

[PudrowDSM]

I have ridden a almost completely stock crf50 with a lipan 140 swap and it didn't get to crazy, this should be about the same. The longer swinger will definitely keep the front end down a little plus I have it geared a little in the rear for less torque... we'll see how she handles!



Travis

 

[Keller_2012]

damn nice

ill be doing this to my bike really soon

but im goin with the g2 140

 

[PudrowDSM]

Finally finished the 140 swap and figured I'd post of few updated pictures. I'll post some videos once it warms back up... it has been snowing the past few days.



140cc!!

Side Shot

New Bars, Throttle, Brake and Clutch Lever

Oh Yeah!!

Other Side Shot

This swap makes a HUGE difference!! The 82 bore kit was nice and had a lot more power than the stock setup however this monster tops it! Front comes up with just a flick of the wrist in 1st, 2nd comes up with a very very slight tug on the bars and roll on the throttle and 3rd comes up easily with the slip of the clutch! I haven't had a friend drive next to me yet to see what the top speed is, but I would guess easily 55 mph!!



Next thing is to get it registered in my name... the Cop didn't like trying to catch a little 50 but he let me go with a warning... haha!



Travis

 

[xr50rider14]

Awesome! I Can't wait to get my G2 yx140

 

[T Bolt USA]

very cool 50 build up , good luck with you motor

we have been doing these here for years with great results

 

[PudrowDSM]

very cool 50 build up , good luck with you motor

we have been doing these here for years with great results

Thanks!! So far I couldn't be happier with the way it performs! I might have to hit you guys up for a lighted rotor kit... I want to make it streetable :evil:



Travis

 

[T Bolt USA]

Thanks!! So far I couldn't be happier with the way it performs! I might have to hit you guys up for a lighted rotor kit... I want to make it streetable :evil:



Travis

do you have 2 yellows coming from the ignition ? if so thats your lighting

output and you just need a 12v regulator and mabey one of our lighting kits ....

 

[xr50rider14]

Planning on getting any riding vids?

 

[TheFiddyMan]

Sweet man! Bike looks great. I just put in a lil piranha 125 on my 50 as well. Have fun with your new motor!

 

[PudrowDSM]

do you have 2 yellows coming from the ignition ? if so thats your lighting

output and you just need a 12v regulator and mabey one of our lighting kits ....

Yep, There are 2 yellow outputs! I'll have to check your site for some light kits... anything with just a head light, brake light and brake switch w/ regulator?

 

[PudrowDSM]

Planning on getting any riding vids?

Riding vids will be coming soon, Colorado has been hit by a steady streak of snow... But once we have some 60 degree weather again, I'll take some action footage



Travis

 

[xr50rider14]

Riding vids will be coming soon, Colorado has been hit by a steady streak of snow... But once we have some 60 degree weather again, I'll take some action footage



Travis

sounds good

 

[armenian]

are these motors stunt friendly i.e.-won't have oil starvation issues on a full blown stunt fiddy? I'm torn between either doing this same mod to my crf 50 and/or installing an 88cc kit....quick question....will an fmf exhaust for a crf 50 bolt right up to the pitster motor?

 

[PudrowDSM]

are these motors stunt friendly i.e.-won't have oil starvation issues on a full blown stunt fiddy? I'm torn between either doing this same mod to my crf 50 and/or installing an 88cc kit....quick question....will an fmf exhaust for a crf 50 bolt right up to the pitster motor?

Not sure on the oil starvation, I have pulled tons of wheelies on the new motor but I guess not enough to give an accurate description of this motor's limitations. That might be a question for the manufacturer, maybe find out what degree or rotation is permitted still allowing the engine to stay lubricated inside.



There are tons of people with their experiences on different engine setups, I had the 82 BBR bore on this before and while it was pretty fast and easily stuntable, I wanted more. In my own experience, the 140cc is in no comparison to the 82 kit. Its almost scary how easily it comes up, even when just hauling ass through the gears the front will pop up a little when shifting into 2nd and 3rd under hard acceleration.



I have an aftermarket exhaust, not the fmf but the mounting points should be the same since they were both built for the CRF50. The new motor brought the exhaust port forward about 1/2 an inch. I had to drill a new hole in the original mounting tab, other than that it clears everything perfectly!



Hope this helps,

Travis

 

[armenian]

Cool thanks man...I was scoping out the GPX 125cc here:



GPX 124cc 4-up Tranny Engine
fits Pit Bikes and Other Minis - Engines - GPX Engines - GPX 124cc 4-up Tranny Engine fits Pit Bikes and Other Minis - TBolt USA, LLC



Not a bad setup eh?

 

[PudrowDSM]

The setup looks pretty good! You get everything needed for the most part. I would definitely get an air filter to fit the bigger carb and ask when you order the motor if the stock pegs will fit, mine didn't and had to buy an aftermarket setup. That way when you get your motor you can bolt everything up and don't have as much down time! The Tank spacer kit recommended is a good idea too, I should have ordered one. It is still possible to install without it but it would give more clearance for the throttle cable going into the carb. The new carb and cable don't have a nice 90 degree bend before going into the carb.



Travis