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Hi, I bought a zongshen bike out of a scrap yard for £40 last year, me and a friend got it running and it sounded good, took it out a few times but it has developed a ticking noise or clicking noise at the top of the engine, it still runs good and plenty of power am just wondering would you know what the sound could be?

What oil did you use ? I have the same engine/ transmission setup and the transmission oil just started to boil and the clutch lasted 5 minutes…

I bought a gasket kit and it gave me 3 o rings like the one that goes on the head nut but I only took 1 out any info would be helpful

What do you torque everything to

Well done for your commitment 😂

Hi. Very interesting insight. What is the engine rpm at which the clutch engages? I have a gx390 sitting for years from another project (hovercraft) and recently I am looking for a way to build a 2 wheel walking tractor. Need to reduce rpms down to 60 on the tractor wheel for walking speed and a clutch is most useful. There are EAP branded gearboxes for GX390 on ali, do you have any info on those? Do they hold? Another option is to go for a regular centrifugal clutch and 2 sets of sprockets to reduce rpms.

I have to say these are pretty sturdy non complicated engines, I have one in my quad and its never skipped a beat, serviced it a few times and it just fires up every time. Good luck with this one, the parts are pretty cheap and lasts very long. It's very nice for a go-kart/mini cross kart.

Do you know what the ladder looking piece inside the engine os called ?

Hi I have an old zongshen 250cc engine the EXACT SAME AS THE ONE IN THIS VIDEO, I'm doing a full engine rebuild on my engine can you or anyone tell me were to find the main engines parts, I've looked everywhere and I'm having no luck finding anything apart from Just the piston head kit, what happened was my Kickstarter shaft teeth had grinded down after years of kicking so i have a brand new Kickstarter shaft that I'm replacing so I just thought if I'm going to have to split the full engines main crank casing to put a £13 Kickstarter shaft in, well I'm surly going to do a full rebuild, so please help me for parts as I'm really stuck and I don't know what to type in to the internet to get all the parts I need to rebuild it, thanks

Is this a honda crf clone?

I was wondering how long is the push rod

Maybe a pair of glasses would be helpful that gate way is so wide it must of been hard to hit the post lol. Great video guys I've just recently found your channel and I'm loving it so keep up the good work. I've liked and subscribed. 👍👍👍

What clutch would fit to connect to a go kart the entry is bigger than the clutch I have

Did it run?

Why not a torque converter kit? They are miles above in performance trust me, I've owned both and still do. Night and day difference bro.

It looks like all you had to do is remove the dust cover boots on each side then remove both enter ball joints from the rack and then put spacers between the ball joint and rack on both sides (basically moving the tie rod pivot point out wide enough so that it's in line with the existing upper and lower control arm pivot points). They make any length tie rod end spacer you can think of for like $5 a piece. Another way would be a longer rack but you already had that one I'm sure.

For everyone using this clutch on a 1" shaft it's extremely easy to do whenever you simply swap the crankshaft to the correct 25mm one. Way easier than this method by far. You can get a clone 25mm crankshaft for the 270 and 390 for around $30 all day long on ebay.

Brilliant. I've just done a similar remodel on a GX270 QA model with a 25.4 mm shaft. Grinded the shaft, Cut the shaft, had to drill a 6.5 mm hole and and a thread to it so it matched an 8mm screw to fasten the clutch spring plate. In stead of fitting the turbo washer I cut of the back end of the clutch wheel and the sprocket to make the spacing fit. In the end I had to add a small spacer when mounting the clutch spring wheel, or it would not disengage.

Is this a oil pump or splash lubrication system

What size piston was that ?

Awsome videos guys! Really love the channel and the content. It's great to see there's others doing builds like this! I just started my youtube channel about my car projects and I'll be introducing my off road buggy/shifter kart build I'll be doing with the same zongshen you guys have. One day we'll do a collaboration once we have the views!

hi! (I have a 250 ERZ which has difficulty starting cold) you can answer me that, how much do you put for the adjustment of the rocker arms intake exhaust?

YEWWWW

looking good so far mate

Is that engine a 25mm shaft?

oil will leak and not very strong 4 bolts with snap..i make my different how you did...but any way good vedio bro

Good vid. I have a 2007, gio 250cc , 167fmm , 5 speex with reverse atv, but I can never find any information for a gio250cc engine. Is it possible these engines are made by the same factories, but just re-branded?

Part 2 being uploaded Tuesday folks!

I'm traumatized , move the camera back away from your faces ! omg pls.

YEWWWW

Interested to see more of this wet clutch. Will it climb?

Structural fuel tank, love it

Dam good build guys... keep em comming.

Don’t ever face a grinder towards yourself and cut something.

Good video. Some of the dialogue audio is a little low but the video moves nicely and is very informative. Most important is the benefit of problem solving in real time with your son. My father and I restored Austin Healeys and I can trace all of my trouble shooting abilities to watching him work.