Zongshen 250 specs and info

Engine Mode: ZS172FMM-3A
Engine Name: CB250-F
Engine Type: Single cylinder,4-stroke,air-cooling, camshaft upward
Displacement(ml): 249.9
Dimension(mm*mm*mm): 303×324×429
Net Weight(kg): 32
Max.Power(kw.r.min): 14*(8500+-5%)
Max.Torque (N.m.r.min): 18*(6500+-5%)
Compression Ratio: 9.25:1
Bore and Stroke(mm*mm): 72x61.4
Ignition method: CDI
Lubrication method: Pressure and Splash
Min.Fuel Consumption(g.Kw.h): is equal or lesser than 354
Starting method:Electric/Kick
Clutch method: Manual Wet Multi-Plate
Gearshift Method: Constant mesh,two stage transmission,5-speed Gearshift
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[@Joebauers2505]

this engine is basically a old honda clone, it was even made by a guy from honda the designer was an old honda engineer.

[@Mikefestiva]

Nice video man! I bought a Templar 250 with this engine and so far I have really been happy with it. I really like the simplicity of the engine. I’m also fairly short at 5’7” and the normal Templar fits me really well, much better then my KTM XCW 200. Nice work on fitting that engine in your KLX! 😊👍 I will subscribe and see what ever else you make on this subject 👍 Thanks

[@rosslester4363]

I am currently shoving one of these into an 87 honda XR80! it has been quite the project...

[@wrightcycleworks]

Good info Ronnie, Zongshen has some pretty good engines out there. NC300 and 450 liquid cooled mills are very reliable.

[@pauldampier9681]

I would definitely be interested in learning more of the engine. I have the 6spd counterbalance engine and daily commute it 40 miles it’s been good so far and I really like it

[@marshallkaufman3123]

i have a old cg 125 clone from baja from 2007 and its still going. I swapped it onto a yamaha blaster left for dead, and i use it alot never had problems with the engine before looking to buy a zongshen 250cc for a upgrade once the engine bites the dust. it should almost double the power lol

[@jacobscourtes576]

I have the Templar x with a 6-speed I'm happy with it so far it has a lot more power than I expected

[@codybertram6122]

I had an old 92 dr250se sohc that was rated 18hp and I’m over 220 and it pulled me around plenty fine. I can’t imagine how even a newer cheap 250 would feel

[@jacobscourtes576]

@@codybertram6122 I'm 6'2" 260 and also have a crf 450r and I'm very happy with this bike I was definitely not expecting as much power as it has

[@codybertram6122]

@@jacobscourtes576 my brother bought a cheap drz434 big bore with hot cams cause the guy couldn’t figure out the Jetting for the stock mikuni. He even cut an fmf q4 in half. I went from a 160 main jet to a 150 with a smaller pilot and the needle on the third clip wi the air box drilled and I could do 90 mph wheelies all day long. Man that bike was stupid loud. Most fun from 0-60 I’ve ever had.

[@supriadiramlan5545]

nice vids

[@algorerhythm7663]

Old School with the Air Cooled! That is a merch T-shirt.

[@usershortscrazy]

Hey nice video, good explanation. I’m wondering where you get parts for this engine I picked up a Giovanni 250cc and it needs valves, camshaft as wells as the sprocket. Can’t find much on Amazon and don’t know if it would be compatible. If you have any idea let me know.

[@jamesmccabe8736]

I had the 230cc non Counterbalance zongshen in an Orion rxb250. The piston was made from chalk and took out the top end. I have since replaced it with another zongshen 300cc 6 speed non-counterbalance engine from bajaj. The right side cover came cracked. Some jb weld and I'm back in business. My faith is shaken but so far the 300cc has been a great running engine for the first 300 miles. I'll be looking to retrofit some more frames I can title for dual sport use. Nice little town and trail bikes.

[@user-qs2vs6ji4b]

Chinese shit is no reliable I don't buy it and won't buy any thing from the damn commies

[@Bustaghost]

Can you give links to clutch plates, heads, piston, and rings?

[@x8jason8x]

I've got a ZS166FM fit up in the chassis of a 2023 xr150l. I've got everything working, only problem I'm running into is where to send the trigger wire, cause the Honda is a DC cdi, while the zongshen wants an AC cdi. Any tips? 😅

[@loudpack5418]

Would love to get some links for parts a big bore kit , header and oil filter?

[@Dget01]

Hello, what wiring harness did you get for your swap?

[@K_Nasty]

I have the 6 speed. it's great

[@loudpack5418]

Are we able to make it a 6 speed? Mine is a 5 speed and it’s on a trail master tm35

[@BlackwaterAquatics]

Is this engine 6 speed? And where can you find the 4 valve head?

[@markilleen4027]

im doing something similar expect 2 stroke, im putting a 300 sherco trials engine into a kx80

[@Paul-gu2lv]

Great info, but really hard to hear and understand the 🎤

[@Entremanures]

of coarse i question chinese engines but soon or later they'll get it right.

[@PotatoeJoe69]

Zongshen makes great engines. Do know, Zongshen makes 2 different 250cc engines, but one of them is actually 223cc, the other is 249cc

[@faraadmohamed2325]

How do you know the difference?

[@PotatoeJoe69]

@@faraadmohamed2325 the 223cc comes in the regular Templar. The 249 comes in the Templar X and Templar M