gio x31 250 cc engine change over

FLASHLIGHTBOY · 03-05-2011, 01:19 AM

does anyone know if you can switch from the older 250 cc on a X31 TO THE NEWER STYLE ENGINE... Svenn at Gio is not sure if there is any problems with this.. I have the older style.. 2009 motor and I want to install the newer 2010 style engine.. some how they are suppose to be a litlle different.. thanks

Weldangrind · 03-05-2011, 01:59 AM

Got pics? My guess is that the older version is OHV, while the new one is OHC, but I don't really know.

FLASHLIGHTBOY · 03-12-2011, 12:55 AM

Well I have a new 2550 cc motor from GIO to see if it fits where the older version was.. we willpost the results when it happens..

FLASHLIGHTBOY · 03-12-2011, 12:56 AM

sorry .. it should say... 250 cc .. sticky fingers

RageHardIntoTheBendies · 03-13-2011, 08:57 PM

What are the specs for the new engine?

Been thinking about a swap on my saga the also uses the same pushrod mill.

brentn · 03-13-2011, 11:23 PM

Same displacement, around 230cc if you calculate the bore and stroke. The new engine has an overhead cam with timing chain. Valves are adjustable like the old one, but now with a much better cam cover for easy access. Both the large round bolts opposite of each other are where you adjust the valves. Engine mounts look identical, I have an older orion engine which is the same as the gio older one. I also have the newer 2010 gio and like I said, mounts look identical.

Newer engine is still a 2 valve making pretty much the same hp, just better design with the OHC. They say it makes 10% more power, I doubt it, porting looks identical as well as the valves and valve lift but not 100% sure.

They make a newer x37 engine, again 2 valve OHC but a true 250cc and water cooled. Looks impressive, but again no real improvements in power. I read just recently that they are finally making 4 valve engines, copies of the CRF250R's which look very impressive. These the UNICAM design that the jap bikes use, would love to find a person who owns one with some pics and video. Problem is the price of these bikes are up at 3-4grand, you might as well get the real thing used IMO. If the price came down to 2500 it looks like it could be really popular.

FLASHLIGHTBOY · 04-28-2011, 01:13 AM

while it has been about 1 month since the person took the motor from me to swap it over.. I would say it must fit ok.. so case closed .. it fits

Morriseau · 05-29-2017, 06:56 PM

Hey I am wondering if a 2009 (Zhongshan motor) Gio 250 x31 top end cylinder would fit on a 2011 Gio 250 x31 motor. I don't have any specifics or anything. Just hoping someone would know!? Thank you!!

Rangerscott · 05-29-2017, 09:56 PM

I got an Xmotos Xb31. Should be the same bike. It has the 169fmm engine. Its not a true 169 since the bore is 65.5mm and pin is 15mm. Pretty much the same as the 166fmn engine. OHC engine with 2 valves.

03-05-2011, 01:19 AM	#1
FLASHLIGHTBOY Join Date: May 2009 Location: SASKATOON Posts: 1,161	gio x31 250 cc engine change over does anyone know if you can switch from the older 250 cc on a X31 TO THE NEWER STYLE ENGINE... Svenn at Gio is not sure if there is any problems with this.. I have the older style.. 2009 motor and I want to install the newer 2010 style engine.. some how they are suppose to be a litlle different.. thanks __________________ DEALER FOR ZSTAR & GIO PRODUCTS, TAOTAO ABIBABA ATV ETC
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03-05-2011, 01:59 AM	#2
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Got pics? My guess is that the older version is OHV, while the new one is OHC, but I don't really know. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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03-12-2011, 12:55 AM	#3
FLASHLIGHTBOY Join Date: May 2009 Location: SASKATOON Posts: 1,161	new 250 dirt bike motor Well I have a new 2550 cc motor from GIO to see if it fits where the older version was.. we willpost the results when it happens.. __________________ DEALER FOR ZSTAR & GIO PRODUCTS, TAOTAO ABIBABA ATV ETC
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03-12-2011, 12:56 AM	#4
FLASHLIGHTBOY Join Date: May 2009 Location: SASKATOON Posts: 1,161	250 cc motor sorry .. it should say... 250 cc .. sticky fingers __________________ DEALER FOR ZSTAR & GIO PRODUCTS, TAOTAO ABIBABA ATV ETC
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04-28-2011, 01:13 AM	#7
FLASHLIGHTBOY Join Date: May 2009 Location: SASKATOON Posts: 1,161	new 250 cc gio motor while it has been about 1 month since the person took the motor from me to swap it over.. I would say it must fit ok.. so case closed .. it fits __________________ DEALER FOR ZSTAR & GIO PRODUCTS, TAOTAO ABIBABA ATV ETC
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03-13-2011, 08:57 PM	#5
RageHardIntoTheBendies Join Date: Oct 2010 Location: Victoria, BC Posts: 114	What are the specs for the new engine? Been thinking about a swap on my saga the also uses the same pushrod mill.
	0

03-13-2011, 11:23 PM	#6
brentn Join Date: Aug 2010 Posts: 26	Same displacement, around 230cc if you calculate the bore and stroke. The new engine has an overhead cam with timing chain. Valves are adjustable like the old one, but now with a much better cam cover for easy access. Both the large round bolts opposite of each other are where you adjust the valves. Engine mounts look identical, I have an older orion engine which is the same as the gio older one. I also have the newer 2010 gio and like I said, mounts look identical. Newer engine is still a 2 valve making pretty much the same hp, just better design with the OHC. They say it makes 10% more power, I doubt it, porting looks identical as well as the valves and valve lift but not 100% sure. They make a newer x37 engine, again 2 valve OHC but a true 250cc and water cooled. Looks impressive, but again no real improvements in power. I read just recently that they are finally making 4 valve engines, copies of the CRF250R's which look very impressive. These the UNICAM design that the jap bikes use, would love to find a person who owns one with some pics and video. Problem is the price of these bikes are up at 3-4grand, you might as well get the real thing used IMO. If the price came down to 2500 it looks like it could be really popular.
	0

05-29-2017, 06:56 PM	#8
Morriseau Join Date: May 2017 Posts: 4	Gio 250cc x31 Hey I am wondering if a 2009 (Zhongshan motor) Gio 250 x31 top end cylinder would fit on a 2011 Gio 250 x31 motor. I don't have any specifics or anything. Just hoping someone would know!? Thank you!!
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05-29-2017, 09:56 PM	#9
Rangerscott Join Date: Sep 2016 Location: Texas Posts: 165	I got an Xmotos Xb31. Should be the same bike. It has the 169fmm engine. Its not a true 169 since the bore is 65.5mm and pin is 15mm. Pretty much the same as the 166fmn engine. OHC engine with 2 valves.
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