Micro CoGen.

keith71, what parts are you looking for if you don't mind me asking? I have basically every parts stocked for the changfa R165.  The best site to order parts for the R170 is yoycart.com A matter of fact all parts for all series of these water cooled and air-cooled diesels parts can be found on this site. I have a Full list of saved buyers and parts on a list in my account with this website, i spent days looking up every part for the r170 and r165 because they have so many product's it can be almost impossible to input the correct keyword in the search bar. Basically you may see irrelevant items only. I made about 10 orders now and have every part, a box full of parts for the r165 and r170 except crankshaft and camshaft only because i haven't ordered them yet. i'll send photos of these parts, so you have an idea  on the product's they sell.  it's actually crazy, if you buy 1 head gasket, its about 1.20 usd, if you buy 10 head gaskets i think its only $4 usd!? 40 cents a piece, and shipping is $4 usd. Injectors and injector pumps are average $12 usd a piece fully assembled ready to go! A fresh cylinder head with valves for the r170 are $16 usd, shipping will be about $50 -+ since its a heavy thing but a wicked deal still! A pack of piston rings go for $2usd each if you order 1o packs, so $20! 

I wonder if there's a way I can supply parts for anyone and everyone? I will be glad to do that, cheap prices too,  maybe ebay? problem, I cant stock every part myself but i do know a source for all the water-cooled and air-cooled 2hp to the biggest they get .... im guessing at 33hp?! I am an ebay seller, I think i may have a legit plan if folks are interested! 

Update! It's Alive! Well not quite lol, but it's fully reassembled! well here's a little Rant of excitement here for you all, i've had this thing for 10 years! And what it has like 2500 hours haha?   Long story short it was more work this time around then the first experience rebuilding this engine! I will post photos along with details on this recent rebuild asap! Hopefully by tomorrow! Every fastener replaced with high grade stainless steel, new alternator bracket, valve work involving seat grinding because I made a mistake on the frist rebuild! Resurfaced head and block, new cylinder sleeve, rings, valves, bearings, paint. Redesigned crank case vent using a tire air valve, a redesigned "loop fuel return system" using double banjo bolts will provide a "bleed free" fuel system. 

Hello everyone! I'm alive and well and I hope your all doing well! Is been sometime and I'm planning making a new thread on this R165 diesel within the next week!  Or maybe continue on this forever lasting thread lol?  Its been put away I think since 2021 with over 2200 hours, i did a tear down and never put it back together! Im planning showing pics of the wear and tear and build it back up with new parts just for the fun of it! I've acquired many new parts over the last few years, even found a valve seat cutter kit for the engine my reason for that purchased will be explained soon! I have some cool gear for the fuel system, a very simple self purging fuel system, many pics of interesting parts and gadgets coming soon! 

I'm using standard shell rotella 15w 40, im going to make the switch to full synthetic as it's finally broken in. I can't belive how long it takes for it to break in, I wanted to be sure it was fully ready for the switch, I know it's ready now. over 1500 hours. I'll have to figure how to post pictures and videos ASAP, I'm having a problem with the correct format but I'll figure it out! I'll post some info on the engine, pictures and YouTube links.

An update on the engine, it's been very cold here in Nova Scotia average  -14c   /  10F daily, and with no glow plugs I'm keeping her going non stop for over 9 days only to change oil every 4 days. I can shut her down for a while and cold start with a intake flame for heat but i feel to run her nonstop with no cold start will lengthen longevity by 2 fold, my guess though lol. The engine has 1600 hours and finally stopped burning oil, burns very clean the exhaust is basically invisible under load, smells nice and sweet like diesel should. I'm thinking keeping her going nonstop is better for it during cold weather so it's non wearing its self out under such freezing cold starts. I will be posting  a vidio link on YouTube, and trying to post some pics Aswell soon as possible. I think this engine I ovehauled is going to make a new record for the genuine Changfa R165 diesels. Anyone that has a true genuine of these smallest water cooled diesel in production I'll tell you they will last you a lifetime. The only problem i ever had is running out of fuel constantly and wrecking the o rings on the banjo bolts from constantly bleeding the lines, easy fix get a pack of copper rings. If anyone has anymore of these engines  for sale give me a ring lol. Really seriously...

  When you make the order they can ship out quick, but  it can take up to a week max till they have it ready, they request the parts from the manufacturer, the parts arrive at the warehouse, they weight them for shipping costs, if you requested they will send photos of the product before shipping to confirm it's what  you needed. Then they package and ship.   Usually when it's shipped EMS they may ask for import fees when arrival to your country, depending on the value of the package and country's import laws.  Usually for me it was like $20 for a decent order over $100. The quickest delivery from the day I made my purchase was about 8 days. With the pandemic things may be a little slower haha.

Also check out eBay a seller is selling all parts for the water cooled types but they are expensive, except for cylinder sleeves they are around $45 us shipping included, I purchased one before Christmas for the r165 for a future rebuild. It's at the point now I have enough parts I don't feel like I'm on the moon with the engine haha!

Veggie, My source website is called yoycart.com, they have a different way of selling things but it works! First make
An account, then  search for your parts, add to shopping cart, shipping prices  is estimated with the weight of the product, example a head gasket for my R165 weights 32grams exact., they calculate shipping with weight,  youPay with credit card, they will ahead photos of the product before they ship to you if you ask. so far I purchased over $500 in parts, 8 orders over the last 4 years and never had a problem. If you have a hard time finding what you need let me know and I can find the parts on site, send you the parts  numbers, sometimes the sites search engine shows to much products. They have every part needed for all the china diesel engines from the smallest air cooled to the large water cooled series.  Prices are incredible I got 10 piston ring sets. 6 plungers, 6 nozzles, 2 valve kits, 12 head gaskets for my R165 all for $150 Canadian, shipping is EMS express takes average 10 days.

It's still running non- stop since my last post Haha! I do oil changes every 4 days.  I'll have to post a pic for what I got for parts, it was such a great deal I couldn't pass lol! 10 piston rings sets, 6 plungers, 6 nozzles, 2 valve kits, and a 5 pack of rod bearings. I hear parts are hard to come by,  so far after 4 years my source haven't let me down!  My apologies I haven't posted any vids I will post a YouTube link soon as I will try to upload a few. A few add ons I made, I fabricated a fuel shutoff solenoid to the block temp gauge it shuts down the engine quick when temps read over 98C, also I got very fed up whenever it ran outta fuel I have to bleed the system, make a big mess and deal with a rough running engine for a few hours till air pockets clear up. I fabricated a float system in a 20L fuel tank, it deactivates  the fuel solenoid and shuts down the system. It runs roughly 9L per 24 hrs, average 600 Watts.  

I'll be sure to post a new video today while it's still daylight. I will explain my system. It's still in the trail stages as I have many flaws to fix, I'm really picky on this setup. I now keep the radiator isolated away from the engine I don't trust the vibrations. She still running non stop since my last post about 75 hours ago without any hickups. I'm watching the oil consumption it's really not burning much at all after 48hr is when I notice about 1/8 inch drop on the oil dipstick. On the 450 hr mark i removed the side covers and inspected the gear bay and crank case and very clean no metallic particles none whatsoever, still gave her an intense internal flushing, I used mixed gas to clean the inside, waited hours before reassembly, was dry but oiled from the 2stroke to keep from drying completely. Anyone think it's ok to clean it with mixed gas every 5 hundred hours I'd like an opinion if it's ok for this? It seems good no harm to anything, IP pump doesn't seem affected, doesn't affect the internal red paint.
I'm not using full power only about 600 Watts so it shouldn't burn much oil I assume. For those of you that installed an external oil filter I highly envy you all! The 3hp R165 model has no forced oil pump, uses centrifugal force oiling the mains, splash for the upper rod, and a barbaric worm drive pump on the cam end for the rockers. I'm thinking adding an electric drive oil pump just for passing threw an filter but perhaps it'll consume to much power? I'll still may give it a go changing oil every 100 hrs sucks. With a filter you'll get up to 200hr intervals. Recently for an added security feature, if the engine was to over heat it will deactivate the fuel solenoid switch shitting her down fairly y
Quickly. I'll explain in the next video I'll post today. Fortunately there is a lot
More to the system id like to discuss on and maybe get some input on some ideas, so this thread may get a little longer haha. 

It's been forever since I been online,  and hope it's ok to revive this thread, I'm using the changfa as a prime power source as a backup when the main kubota Gen is down, at 600 hrs in it's running great 24/7, I'm kinda curious about a few things. It was -3C this morning and had it offline to chill for a few hours to cold start test, it fired right up without any heat, kinda strange as no glow plugs to assist. I'm running a 645 watt load 24/7,  it sips about 9L daily @ 375ml hr, is that adequate? I seem pleased.  I'm using a non efficient mini alternator, 430 watt AC continuous with a 12V Inverter, efficiency loss at %50 I believe total 645Watts.

Thank you really much for the advice on the injection timing! Glort i missed out on the bigger diesel someone got it before I could! I'm still always looking for them lol. So I managed to shim it off 4 degrees advanced by using a 1/64" shim made from gasket sheet, and put it in between the originals shims . The engine runs very well on startup, and when loaded with the 1000 watt 12v microwave it don't make any much noise which surprised me abit!

But I have another problem as I thought advancing the injection Would fix, it's  smoking a abit  when loaded.  I haven't ran it in the day, only in the night so I don't know what colour it is. I allowed to to reach running temp.

So here's a summary of the smoking problem

1- smokes more when loaded
2- Diesel smelling  but I think I  smell oil
3- engine has 18.5 hrs, coolant is still clear green
4- definitely not white amoke
5- smokes even  at full speed


I have a few Theories what's going on

I may installed the piston rings backwards, I'm wounding if that's possible
With this engine as the rings seem bi directional.

valve guides have to much clearance

Exhaust pipe restriction, I have a smalll muffler and flex pipe system that I will dismantle and run without to test if it's the culprit.

Valves need adjustment

Injector needs cleaning, I did a lot of  low loading  which may carbonated the injector.




That's what's on my mind for what I may need to look for, but I know there's others things i may need to look for. I guess after ripping apart this engine and reassemble also takes just as much work tuning it to work perfect!

So another question, does everyone's Changfa and Changfa type diesels smoke when running? Is it normal for this rugged design of engines? I understand these are designed types from the old days.

Hello! So I moved back to Nova Scotia in the boonies at my Camp,  Currently using the Kubota diesel for prime power.  I'm giving real test runs of this small changfa is running well with tons of low end torque, it is burning oil as it's still 12 hrs breaking in. I'm using a DC 12V 1000 watt microwave for a load bank.   So I'm liking running it around 1800~2000 rpm then the rated 2600 rpm for noise reduction and fuel efficiency.  I installed a small muffler and works Great! But the knocking sound is still loud! So I'm thinking adjusting the injection timing may work abit? Or maybe even adjust the injector screw? I'm going to post new updated videos of the engine. The pressure cooling system works great! The alternator system puts out easy 1000 Watts with the engine running around 1800 rpm it's doing just what I want! Just I really think I could knock down the knocking sounds alittle bit 

Reviving my old thread! 

Thank you glort for the info, Anyone know were to have a stub shaft made? Id love to have a real pulley, i notice there is 3 outter bolt holes on the flyweel for a bigger pulley.  When i get to Nova scotia ill be spending time figuring everything about it! I can make all the noise i want aswell lol. I was thinking maybe it could be the size of the flywheel affecting it, putting to much torque on the engine?  I will belt it to my st3 head and put a good load on it with the original pulley. I still have not uploaded the new vid, i forgot too, ill do that as soom as possible!

Before my next test run, im thinking I'll repaint the outer flywheel rim but add some fine sand dust or something to embed in the paint. I'm thinking if the belt don't slip, the engine should run very smooth. Has anyone had a similar problem?  If a belt is loose while driving a Gen head, the Diesel engine will hiccup every few revolutions. I can't find anything online about this issue. I work a lot, and live at a town house with neighbors everywhere so I'm limited on time when I can run it.