Micro CoGen.

Prime movers, diesel and gas engines => Changfa/Redstone/Chinese diesels => Topic started by: keith71 on November 21, 2024, 03:59:59 AM

Title: Changfa type 175x2
Post by: keith71 on November 21, 2024, 03:59:59 AM
Has anyone seen one of these before? A 2 cylinder R175 renamed a wan275. B&S 75x80mm. Looks like it was made in 1992. Roughly 12hp? driving a st type 7.5 watt gen head.

I like it, parts might be hard to find. Do not think they have been in production for awhile??.changfa type 275.jpgchangfa type 275 2.jpgchangfa type 275.jpgchangfa type 275 2.jpgchangfa type 275 3.jpg     
Title: Re: Changfa type 175x2
Post by: keith71 on November 21, 2024, 04:02:21 AM
A few more pics, sorry for the duplicate pics.changfa type 275 4.jpgchangfa type 275  5.jpgchanfa type 275 5.jpg   
Title: Re: Changfa type 175x2
Post by: keith71 on November 21, 2024, 06:09:19 AM
St generator.  Supposed to go look at it Friday morning.  Anybody have any rough ideas on what it is worth?changfa type 275 6.jpg
Title: Re: Changfa type 175x2
Post by: Tom Reed on November 21, 2024, 12:08:01 PM
The whole genset, or just the st7.5? Lots of special parts on that engine. What's it worth??? Priceless as a conversation piece among a special group of friends, dependable long term backup power not so much. Please keep us updated.
Title: Re: Changfa type 175x2
Post by: keith71 on November 21, 2024, 12:59:57 PM
The whole genset.. I figured parts might be tough to find.Even has a waterpump on the engine.  I did find a complete 45 page service book pdf online.. Definately not your average R175 lol.. I more or less just wanted to show you guys, and see if anyone ever used one or saw one.
Title: Re: Changfa type 175x2
Post by: keith71 on November 21, 2024, 01:01:54 PM
Supposed to have low hours and runs good.. Thats what most of em say anyway..
Title: Re: Changfa type 175x2
Post by: keith71 on November 21, 2024, 02:58:39 PM
The 275 wan manual..
http://www.kingfisherdieselengines.uk/KD14combi%20instr%20wo%20cover%20-%20275%20WA.pdf
Title: Re: Changfa type 175x2
Post by: Henry W on November 21, 2024, 06:41:43 PM
Good find!
The engine looks similar to the Kubota ZB series engines.(ZB400,ZB600). It could be a clone.
My brother has a Kubota ZB600 and it's been a very reliable engine.
Title: Re: Changfa type 175x2
Post by: keith71 on November 22, 2024, 11:25:34 AM
Tom, you said: ''dependable long term backup power not so much''
Wondering why you think they may not be dependable long term?
They also had a marine version that was used in sailboats late 80's early 90's from what I am reading. thanks.
Title: Re: Changfa type 175x2
Post by: Henry W on November 22, 2024, 02:17:17 PM
I like what I see in the service manual. The diagram showing the internals of the engine looks very promising. I noticed that the main outer journals have a thrust ends on them. And, in turn this should make the crank end play adjustable with shim/gaskets. The crankshaft mains and rod journals are all oil pressure lubed. This is good for longevity and they look like they are a decent size so they should be able to take a fair amount of load. The engine has wet sleeved cylinders, and the pistons are four ringed type. Probably cast iron rings, and that is good for on site rebuild. I say that it should be a fairly reliable engine. I believe that this engine does not have counter balance shafts. So, this should be very simple and reliable and reliable engine to work on.

My only concern is parts. I put in a call to Marshall Masters for you and Marshall feels that he has parts available, or can get them for you.

MASTERS FARM SUPPLY
25888 Northwest State Road 73, Altha, FL

https://mastersfarmsupply.com

850-762-3221

I would look into locating a spare injector pump and injector lines as soon as you're able.

Title: Re: Changfa type 175x2
Post by: Tom Reed on November 22, 2024, 02:28:22 PM
Quote from: keith71 on November 22, 2024, 11:25:34 AMTom, you said: ''dependable long term backup power not so much''
Wondering why you think they may not be dependable long term?
They also had a marine version that was used in sailboats late 80's early 90's from what I am reading. thanks.
I did a quick search for spare parts and didn't find anything. Hard to depend on engine with limited parts. Although a lot of 175 parts might fit. I have to wonder why it is no longer in production.
Title: Re: Changfa type 175x2
Post by: Tom Reed on November 22, 2024, 02:50:26 PM
Well I see Henry found parts, so I'll retract what I said.
Title: Re: Changfa type 175x2
Post by: Henry W on November 22, 2024, 03:16:24 PM
For reference, I posted Masters in a sticky back in 2014. It's the very top thread in Changfa/Readstone/ Chinese Diesel

Here is the link:
https://microcogen.info/index.php?topic=3355.0
Title: Re: Changfa type 175x2
Post by: keith71 on November 24, 2024, 02:04:09 PM
Hi Henry yes I remember the sticky to marshall's in Florida. I am glad you like the engine and think it is of pretty decent quality. It does supposedly run pretty good as well. The guy is asking $800 for the engine/generator setup. I do believe it has fairly low hours. I did not ask, but if they were not using it as a main power source or to charge a battery bank, and just used for backup power it is probably legit. What do you think of the price?
Title: Re: Changfa type 175x2
Post by: Henry W on November 25, 2024, 01:06:22 PM
Well,
Anything is a risk. But I think it's a good risk.

Find out about parts.

I I'm not reading anything about you test running it. If you're able. Run it and put a good load on it.

If you're not able to run it, I would ask a lower price. Just don't piss the buyer off.

Worst case, pay the price and hope it's fine.
Title: Re: Changfa type 175x2
Post by: Henry W on November 25, 2024, 01:09:58 PM
The generator head is worth at least $300.00 by itself. That is if it works. My guess is it has copper windings.
Title: Re: Changfa type 175x2
Post by: Henry W on December 06, 2024, 06:11:07 AM
Keith,
Did you get the 175 twin?
Title: Re: Changfa type 175x2
Post by: Tom Reed on December 06, 2024, 09:51:53 AM
Yes, inquiring minds want to know???
Title: Re: Changfa type 175x2
Post by: veggie on December 14, 2024, 10:07:05 AM

Those engines are rare as Hen's teeth.
I suspect the majority of the wearing parts are the same as a 175 single.
so ring, pistons, valves, con rod bearings etc should fit and they are easily available on AliExpress.

If it were in my neck of the woods, I would not hesitate to grab it.
Title: Re: Changfa type 175x2
Post by: keith71 on December 14, 2024, 11:50:48 AM
Sorry guys, I havent logged in for abit.. I have not purchased engine yet. But it is still available I think.. Believe me I want to purchase this engine. Like veggie said pretty rare and most parts should be able to get without to much trouble.

It is certainly out of the norm that we usually see.

You guys know the deal, I /we think we have found the next new engine to add to our collection for a project,but in reality for me, I am not sure how many dream projects I can actually finish.

I do not want to pass this engine up and it has been for sale for awhile probably because 95% of the people looking for generators in my area at least, have no idea of what kind of generator this is.

Main reason I posted about it was to show it here and see what yo all thought of it.
Build a quiet muffler for it, and maybe fix some of the problems with the old style ST head and it would probably be a pretty good setup.

This time of year is a bit slow for me income wise. If this was available back mid summer would have purchased it in a second, and probably paid the full asking price as well.

I just might say the heck with it and just buy it anyway.

To be continued and I will update you for sure if I buy it..

Thank you for the interest and info you have provided, Keith.
Title: Re: Changfa type 175x2
Post by: Tom Reed on December 14, 2024, 02:20:54 PM
It's not like you can hold off and wait for the next one. :D
Title: Re: Changfa type 175x2
Post by: Henry W on December 31, 2024, 12:08:04 PM
That is true. When I saw the new crated Kubota EB300 post on Craigslist. I immediately jumped on it. Instead of emailing, I called. I did not argue. I told the seller that I'm fine with the price. When I called to give him the money order info he said he was inundated with interested people all over the country.
I took a huge risk buying it. It was shipped from California. I lost a good amount of sleep wondering if I purchased a $1,000.00 crate of rocks. It was such a relief seeing the thing for the first time.

IMG_3185.jpeg

Before this one, I had a Kubota EA300 and a Kubota EA330. I foolishly sold both of them. It took over 10 years finding this one.
Title: Re: Changfa type 175x2
Post by: veggie on February 13, 2025, 09:39:25 AM
Quote from: 63 Sprint on December 31, 2024, 12:08:04 PMThat is true. When I saw the new crated Kubota EB300 post on Craigslist. I immediately jumped on it.

WOW ! Those are great engines. So .... have you learned your lesson?
will you be selling this one ?   ;D
Title: Re: Changfa type 175x2
Post by: Henry W on February 13, 2025, 11:20:07 AM
Have I learned a good lesson...
This one will not be sold. It might be the most boring generator I've owned. Just runs and runs. Simple oil and filter changes.
But that is what we all want.