Go Back   ChinaRiders Forums > Technical/Performance > Dual Sport/Enduro
Register FAQ Community Calendar Today's Posts Search
Reply
 
Thread Tools Search this Thread Display Modes
Old 09-23-2019, 01:17 PM   #1
LifeRider   LifeRider is offline
 
Join Date: Sep 2019
Location: Machesney, IL
Posts: 30
Question Engine upgrade possibilities!

Most of our bikes have the push rod, two-valve engine and it seems to serve us very well. Of course, “inquiring minds want to know” what other choices we could have. Would we not like overhead cams, 4 valves per cylinder, six gears (the elusive shift for another gear?) and counter balanced engine? MORE POWER – MORE TOURQE!

While just poking around the WEB during a weekend long rainstorm in my area I found some engine listings on E-bay that look like a direct bolt up to my Hawk frame. I thought that starting a thread on this could be interesting, even if no one gives any engine swap a try.

Example:

Model: LX166FMM -3
Type: single-cylinder, air-cooled, 4-stroke, vertical
Bore x Stroke:65.5X66.2mm
Ignition: CDI , electrical/kick start, DC
Gear Shift: Manual forward, 6 gears, international
Maximum net power/ rpm:12.5kw/8000r/min
Maximum torque/ rpm:17N.m/6000r/min
Gears: 1N23456

Gears : 6 foward gears for 2 wheel motorcycles
Default colour :Black

enging Kit:
1)Carbur:
2) CDI, Relay, Ignition Coil, Rectifier ( JT brand, Yammaha Supplier with top quality)

If you need this engine with wiring hardness (cable tree), Please refer to the following link:
https://www.ebay.com/itm/Loncin-250C...wAAOSwSk9chjnp

If you find options that look good as a possible upgrade – Please dive in and post.

We do not need this but like all of us that dream for more…more…more it could be interesting!

For the GREEDY – NOT the NEEDY


 
Reply With Quote
Old 09-23-2019, 01:21 PM   #2
Armycopter   Armycopter is offline
 
Armycopter's Avatar
 
Join Date: Sep 2019
Location: Maine
Posts: 98
I would love to see someone try this out. Looks interesting.


 
Reply With Quote
Old 09-23-2019, 01:28 PM   #3
alex_in_az   alex_in_az is offline
 
Join Date: Aug 2013
Location: Goodyear, Arizona
Posts: 412
Quote:
Originally Posted by LifeRider View Post
Most of our bikes have the push rod, two-valve engine and it seems to serve us very well. Of course, “inquiring minds want to know” what other choices we could have. Would we not like overhead cams, 4 valves per cylinder, six gears (the elusive shift for another gear?) and counter balanced engine? MORE POWER – MORE TOURQE!

While just poking around the WEB during a weekend long rainstorm in my area I found some engine listings on E-bay that look like a direct bolt up to my Hawk frame. I thought that starting a thread on this could be interesting, even if no one gives any engine swap a try.

Example:

Model: LX166FMM -3
Type: single-cylinder, air-cooled, 4-stroke, vertical
Bore x Stroke:65.5X66.2mm
Ignition: CDI , electrical/kick start, DC
Gear Shift: Manual forward, 6 gears, international
Maximum net power/ rpm:12.5kw/8000r/min
Maximum torque/ rpm:17N.m/6000r/min
Gears: 1N23456

Gears : 6 foward gears for 2 wheel motorcycles
Default colour :Black

enging Kit:
1)Carbur:
2) CDI, Relay, Ignition Coil, Rectifier ( JT brand, Yammaha Supplier with top quality)

If you need this engine with wiring hardness (cable tree), Please refer to the following link:
https://www.ebay.com/itm/Loncin-250CC-air-cooled-engine-balance-shaft-6-gears-with-wiring-hardness/254354276250?hash=item3b38b23f9a:g:~KwAAOSwSk9chjn p

If you find options that look good as a possible upgrade – Please dive in and post.

We do not need this but like all of us that dream for more…more…more it could be interesting!

For the GREEDY – NOT the NEEDY
torque and power are the same as a stock 229cc engine
__________________
2020 Tao TBR7
9.3:1 PnP head
CRF230F exhaust
4 degree advance key
290 degree cam
Nibbi PE30 and cone filter

Front fork brace


 
Reply With Quote
Old 09-23-2019, 01:56 PM   #4
LifeRider   LifeRider is offline
 
Join Date: Sep 2019
Location: Machesney, IL
Posts: 30
This is just a sample and I did not look enough to find the best choices - Just thought it was tought provoking.

Specs that I found (but you know every thing you tind on the web is true (Ha! Ha!):

CG250:
Max HP 14.1/7000 RPM
Max torque 16.5/5500 RPM

Loncin 250:
Max power 16.75/8000 RPM
Max torque 17/6500 RPM

I am sure that there are even better choices to be found. This is why these forums are so much fun!


 
Reply With Quote
Old 09-23-2019, 03:43 PM   #5
JerryHawk250   JerryHawk250 is offline
Moderator
 
JerryHawk250's Avatar
 
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,713
Quote:
Originally Posted by LifeRider View Post
This is just a sample and I did not look enough to find the best choices - Just thought it was tought provoking.

Specs that I found (but you know every thing you tind on the web is true (Ha! Ha!):

CG250:
Max HP 14.1/7000 RPM
Max torque 16.5/5500 RPM

Loncin 250:
Max power 16.75/8000 RPM
Max torque 17/6500 RPM

I am sure that there are even better choices to be found. This is why these forums are so much fun!
I was looking at the Loncin 250 if I ever had to replace the engine. That 6th gear would be nice for the street. I also like that it has a balance shaft and the engine is already prepped for an oil cooler. I have a post somewhere on here about it.
__________________
2024 Linhai 300 ATV 4x4
2023 Lifan Lycan 250 Chopper
2023 Venom Evader
2022 Lifan KPX250
2020 Kawasaki Vulcan S (Sold)
2004 Honda ST 1300
2016 Black Hawk 250 (sold)
Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster
2016 Cazador180 XL
2014 Coolster150
JerryHawk250.com
My YouTube Channel


 
Reply With Quote
Old 09-23-2019, 05:57 PM   #6
OneLeggedRider   OneLeggedRider is offline
 
OneLeggedRider's Avatar
 
Join Date: Nov 2018
Location: Stockport, Oh.
Posts: 1,442
I think the bigger issue here is initial and final drive ratios even if it is a 6 speed gearbox. You might not be gaining anything other than moving your left foot more often. Now I do know with a performance engine more gears will allow you to stay in the "sweet spot" and get better acceleration times, but on these Briggs and Stratton engines the actual ratios would probably matter more.

For example I'm tired of going through Turbo 350 trannies in the old Chevy, even though I've got a mud kit in the last rebuild which seems to be holding up well. So I'm thinking about dropping in a 4 speed manual which will be bulletproof (and I prefer stick shifts). And 3rd gear in the manual is actually slightly lower than first in the Turbo 350 with zero power lost in fluid transfer. But there's a downside, if you try to shift a manual in the hole almost all forward momentum is lost and because of that the automatics almost always win. Better to keep power going to all 4 wheels all the time. But there are some guys that have figured out the absolute best ratio so they don't have to shift.

Idk, I absolutely loved my '88 YZ 80 and it would move, but even in 6th the top speed was about 60mph, maybe less, and I was always shifting.


 
Reply With Quote
Old 09-23-2019, 07:04 PM   #7
wedooit   wedooit is offline
 
wedooit's Avatar
 
Join Date: Jun 2018
Location: Pocatello, Idaho
Posts: 794
For example I'm tired of going through Turbo 350 trannies in the old Chevy, even though I've got a mud kit in the last rebuild which seems to be holding up well. So I'm thinking about dropping in a 4 speed manual which will be bulletproof (and I prefer stick shifts). And 3rd gear in the manual is actually slightly lower than first in the Turbo 350 with zero power lost in fluid transfer. But there's a downside, if you try to shift a manual in the hole almost all forward momentum is lost and because of that the automatics almost always win. Better to keep power going to all 4 wheels all the time. But there are some guys that have figured out the absolute best ratio so they don't have to shift.

Idk, I absolutely loved my '88 YZ 80 and it would move, but even in 6th the top speed was about 60mph, maybe less, and I was always shifting.[/QUOTE]
Here is a chevy idea, posted by superchevy ….
Attached Images
File Type: jpg chevybike.jpg (88.7 KB, 5208 views)
__________________
A family that works together, plays together, shoots and trains together, and sleds together, stays together. Second amendment! SkiDoo sleds, NOW 2 TTR225, and a BMS250. A couple of quotes (we are not farmers) "I don't get off the farm much" "Am too old school" I call the china bikes "the china syndrome".


 
Reply With Quote
Old 09-23-2019, 07:36 PM   #8
JerryHawk250   JerryHawk250 is offline
Moderator
 
JerryHawk250's Avatar
 
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,713
1st through 5th are the same gear ratio as the Hawk. 6th is a 2nd overdrive. You will be able to gear it for off road and 6th will have you at the right gear ratio for highway. I'll have to find the post where I have this information already.
Link to thread. http://www.chinariders.net/showthread.php?t=18754
__________________
2024 Linhai 300 ATV 4x4
2023 Lifan Lycan 250 Chopper
2023 Venom Evader
2022 Lifan KPX250
2020 Kawasaki Vulcan S (Sold)
2004 Honda ST 1300
2016 Black Hawk 250 (sold)
Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster
2016 Cazador180 XL
2014 Coolster150
JerryHawk250.com
My YouTube Channel


 
Reply With Quote
Old 09-23-2019, 02:48 PM   #9
Megadan   Megadan is offline
 
Megadan's Avatar
 
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,110
The engine you found is also known as the RE250. I've been eyeing one of these for a while to swap out simply for the extra gear. Power wise, you won't notice much. A bit more at the top of the rpm range, but a bit less grunt down low.
__________________
Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331
2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1
2024 Royal Enfield Shotgun 650
https://chinariders.net/showthread.php?t=34124


 
Reply With Quote
Old 09-23-2019, 07:46 PM   #10
Megadan   Megadan is offline
 
Megadan's Avatar
 
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,110
Exactly what Jerry said. 6th is a .8 ratio. This would allow for running a ratio like a 17/50, but with the highway capability of a 17/43 on our 5spd transmissions. Offering a best of both worlds scenario.
__________________
Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331
2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1
2024 Royal Enfield Shotgun 650
https://chinariders.net/showthread.php?t=34124


 
Reply With Quote
Old 09-23-2019, 07:57 PM   #11
tarote9025   tarote9025 is offline
 
Join Date: Apr 2017
Location: miramar beach fl
Posts: 112
Had this link saved for a while for my shark if it'll push it up to 80 (I'm topping out at 68 through GPS with full gear currently) I'd buy it I just can't justify it otherwise

https://m.yoycart.com/Product/40634641602/


 
Reply With Quote
Old 09-24-2019, 10:22 AM   #12
JerryHawk250   JerryHawk250 is offline
Moderator
 
JerryHawk250's Avatar
 
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,713
Quote:
Originally Posted by tarote9025 View Post
Had this link saved for a while for my shark if it'll push it up to 80 (I'm topping out at 68 through GPS with full gear currently) I'd buy it I just can't justify it otherwise

https://m.yoycart.com/Product/40634641602/
That's the same engine I posted over two years ago. It's not so much about top speed but the fact that you will have a more versatile gear ratio range allowing you to gear it low enough for off road and not lose top speed. At least now we know it's available through Ebay (thanks to LifeRider) and not having to worry about what the final shipping cost would be through Yocart.
__________________
2024 Linhai 300 ATV 4x4
2023 Lifan Lycan 250 Chopper
2023 Venom Evader
2022 Lifan KPX250
2020 Kawasaki Vulcan S (Sold)
2004 Honda ST 1300
2016 Black Hawk 250 (sold)
Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster
2016 Cazador180 XL
2014 Coolster150
JerryHawk250.com
My YouTube Channel


 
Reply With Quote
Old 09-23-2019, 11:41 PM   #13
Torgo   Torgo is offline
 
Torgo's Avatar
 
Join Date: Oct 2015
Location: Texas
Posts: 93
Quote:
Originally Posted by Megadan View Post
This would allow for running a ratio like a 17/50, but with the highway capability of a 17/43 on our 5spd transmissions. Offering a best of both worlds scenario.
It'd sure be nice having that overdrive 6th gear. I'm about to swap out my rear tire after 4000 miles, and I have a 45T sitting in a box, but I just don't do enough highway mileage to really justify moving away from the 17/50 setup.

Still, I go back and forth on it continuously. I'll be glad when the tire is finally on there, regardless of what sprocket ends up with it, just so it's decided.


 
Reply With Quote
Reply

Tags
cg250, hawk, tbr7



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:57 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.