Found a Honda G200 engine ...

[NewbCarter]

Well , opened up the crankcase , the dots are lined up . Checked the flywheel key , all good.

When the choke is on , it wants to start but does like 2 chugs then dies , and again the mist comes out of the carb .

If i turn off the choke after i have cranked it a couple of times , it will run for 3-4 seconds , but barely , then shut off.

 

[NewbCarter]

Well after a lot of advising , and checking tampering with the engine , i got the problem narrowed down the the carb ... so i hope

Since the porting is done , removed the governor etc ... i thought of experimenting with an aftermarket carburetor ... i saw builds with the Mikuni VM22-133 ... so i think this is the right one

http://www.aliexpress.com/item/Gree...62,searchweb201560_8,searchweb1451318400_6148

 

[NewbCarter]

Ordered the carburetor from above , Mikuni VM22-133 with the intake manifold which will need some modding and an air filter .

In the meantime , i found some help in the form of a Honda users manual ..

I will do a teardown of the motor this saturday , to check for one of these issues :
- Ignition timing improper
- Breaker points bent / dirty ( this one im already sure isnt the problem , checked it .)
- Ignition coil shorted
- Valve tappet clearance ??

Also a sidequestion , could a gx200 crankshaft fit in the G200 ?

 

[NewbCarter]

Some todays work ..

Basically took the intake header that was holding the air filter before , cut one end off , and polished and flattened the other end .

What im doing with the cut-off end is flattening the flange , and orientating it horizontally rather then vertically , so i will be able to mount the mikuni carburetor ..

 

[NewbCarter]

Here is the intake manifold finished , will do a teardown tomorrow and check for other possible causes .. tho valves do seem suspicious because compression is super low ..

Could give it a coat of black..

 

[Rodders]

Solid Engine

Hi, I'm new to the forum but had to post as I have used this exact type of engine for many years on my cross country kart for many years.
A few points to start off.
1. As a rule they are very reliable.
2. If it has run with the govener in place,(and this appears to be the case then it should not be worn out with any luck)
3. As suggested it needs to be test run. It requires bolting down. Carb float bole emptying of old fuel.
4. Fresh fuel in tank
5. Turn over switched off to splash oil about.
6. Open fuel tap, full choke, half throttle, ign switch on,
7. Should start with any luck.
8. Choke off slowly, run for 5 mins till warm.

Re gouvnor very important that this is modified for this application or you will not have full throttle control,(engine will rev up when loaded up on own). However this is not a big problem.bend some 1mm brasing wire to form the link between the throttle cable and gouvner lever replacing the spring. Job sorted. Excellent engine.

Re tuning, after some hard use you will notice acceleration stopping. The valve springs stop over revving. These can be up graded but in a side valve engine it's not really worth it.

I would go for the later OHV Honda engines as used in commercial indoor kart tracks.

Re drive I used 2 speed v belt drive which is another story.

I developed a flexing design kart that evolved over 5 chassis and 3 engines. We had the G200 from new.

Rgs
Paul

 

[NewbCarter]

Well , all of those i have already tried.

Isolated the problem is in the carb , but in the meantime i redid the valve seats and solved the bad compression issue.

Now waiting on the mikuni to arrive so then il try to start it up.