3kj and 5bm engines
3kj and 5bm engines
klint » 20 Feb 2013 23:40
In general, I was going to buy a scooter with a 5bm engine (zr evo), I plan to immediately after the purchase, tuning on a Malossi replica with all that it implies. I would like to know if it is worth it to buy a scooter with a 5bm engine. I myself drove a 3kj for 2 years before and I know every screw in it. Specifically, I am interested in the differences and interchangeability of these units: 1. seats for the knee and cylinder head 2. ignition, there is an 8-pin switch on it, the ignition is called sa16, I think, is it possible to install a complete gene with ignition from 3kj (3vp ignition)? 3. Are the gearbox shafts and gears the same? 4. inlet. I read that it is so completely different and will not work with anything else, is there a petal like c6 V-force for it? 5. exhaust. Again, I read that it’s suitable from 3kj, but somewhere it needs to be adjusted by 1 cm xs, in general, rumors? 6. Is the engine yoke the same where it is attached to the frame? (in case you still have to install a crankcase from 3kj) 7. Again, I read that you can fit a 12th wheel into a 5bm, another rumor?
I thought for a long time about buying a scooter, but almost before the purchase I surprisingly found out that it’s not 3kj, now I’m at a dead end -( Thanks in advance for your answers
Re: 3kj and 5bm engines
» 21 Feb 2013 11:24
klint wrote: In general, I was going to buy a scooter with a 5bm engine (zr evo), I plan to immediately after purchase tuning on a Malossi replica with all the consequences. I would like to know if it is worth it to buy a scooter with a 5bm engine. I myself drove a 3kj for 2 years before and I know every screw in it. Specifically, I am interested in the differences and interchangeability of these units: 1. seats for the knee and cylinder head 2. ignition, there is an 8-pin switch on it, the ignition is called sa16, I think, is it possible to install a complete gene with ignition from 3kj (3vp ignition)? 3. Are the gearbox shafts and gears the same? 4. inlet. I read that it is so completely different and will not work with anything else, is there a petal like c6 V-force for it? 5. exhaust. Again, I read that it’s suitable from 3kj, but somewhere it needs to be adjusted by 1 cm xs, in general, rumors? 6. Is the engine yoke the same where it is attached to the frame? (in case you still have to install a crankcase from 3kj) 7. Again, I read that you can fit a 12th wheel into a 5bm, another rumor?
I thought for a long time about buying a scooter, but almost before the purchase I surprisingly found out that it’s not 3kj, now I’m at a dead end -( Thanks in advance for your answers
Messages: 5163 Registered: Jul 29, 2004 12:25 What he drives: KTM
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Re: 3kj and 5bm engines
Arthur22 » 21 Feb 2013 21:41
Re: 3kj and 5bm engines
by voodoojim » Feb 21, 2013 11:41 pm
like no. here it is https://www.webike.net/sd/2082741/
and for those who don't know. The 5bm engine already has a tune valve from the factory. you need to put carbon petals on it and then the collapse begins!
there the crank is changed a little. If only it was tailored for hyper.
Re: 3kj and 5bm engines
klint » 22 Feb 2013 07:18
Re: 3kj and 5bm engines
by voodoojim » Feb 22, 2013 11:42 am
Yes, the 5bm crank is immediately tuned, as if with cuts in the crank.
here is the stock house
throw petals and go down
you change the petals and that’s it. anyone who held it in their hands knows what I mean.
here's his crank
here are 3kj and 5bm side by side.
Re: 3kj and 5bm engines
klint » 22 Feb 2013 18:29
Re: 3kj and 5bm engines
by voodoojim » 22 Feb 2013 21:54
it's not actually a choke. this thing is needed. I don’t know a smart theory about it, I know that in practice it’s like that.
it seems to fill the space. and the motor does not waste energy processing excess. sharper throttle response. less turbulence. in the end there are only poles. it is needed and fits on any tune valve.
For such a motor, the drain pipes do not fit from Airox, for example. and almost any pipes from tuning are welcome.
Re: 3kj and 5bm engines
klint » 23 Feb 2013 12:19
Re: 3kj and 5bm engines
by voodoojim » Feb 23, 2013 2:19 pm
Re: 3kj and 5bm engines
by klint » Mar 17, 2013 6:10 pm
The scooter has been purchased, the only thing left is the engine, there are both crankcases 3kj and 5mb, I want to assemble it for 5mb, but its pipe is slightly different, here are the fittings: this is how a pipe from 5mb stands on a 3kj crankcase, it goes further beyond the fastenings and there is a different bend, it starts a little earlier and interferes with the running board and there is a pipe from 3kj on a 5mb crankcase, as you can see, on the contrary, it does not reach the fastenings
So has anyone installed tuned pipes on 5mb? And if you install a pipe with a separate flange, won't the ground clearance decrease? and what is better than a pipe with a separate flange?
I also found out that their gearboxes are different, the 5bm has an intermediate shaft with 6201 bearings, and the 3kj has 6200 bearings, and they have different internal and external diameters
Re: 3kj and 5bm engines
by voodoojim » Mar 17, 2013 6:39 pm
The gearboxes are different but the mountings for them are the same. Well, that is, you can muddy the tune gearboxes.
a pipe with a separate flange is more elastic and will be easier to tension by 5bm/
but I know that they put it with 3ka-ji
Re: 3kj and 5bm engines
by klint » Mar 17, 2013 6:47 pm
Re: 3kj and 5bm engines
by voodoojim » Mar 17, 2013 7:03 pm
Re: 3kj and 5bm engines
» 17 Mar 2013 21:15
Messages: 5163 Registered: Jul 29, 2004 12:25 What he drives: KTM
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Re: 3kj and 5bm engines
by voodoojim » Mar 17, 2013 10:25 pm
Re: 3kj and 5bm engines
» 18 Mar 2013 13:35
Messages: 5163 Registered: Jul 29, 2004 12:25 What he drives: KTM
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Re: 3kj and 5bm engines
by voodoojim » Mar 18, 2013 2:44 pm
Re: 3kj and 5bm engines
timon455 » Mar 26, 2013 11:24 am
Re: 3kj and 5bm engines
timon455 » Mar 26, 2013 11:32 am
Re: 3kj and 5bm engines
» 26 Mar 2013 14:02
Messages: 5163 Registered: Jul 29, 2004 12:25 What he drives: KTM
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Re: 3kj and 5bm engines
andru 125 » Mar 26, 2013 04:32 pm
Re: 3kj and 5bm engines
by klint » Mar 26, 2013 6:01 pm
Re: 3kj and 5bm engines
timon455 » Mar 26, 2013 7:43 pm
Re: 3kj and 5bm engines
timon455 » Mar 26, 2013 7:45 pm
Re: 3kj and 5bm engines
» 26 Mar 2013 19:59
Messages: 5163 Registered: Jul 29, 2004 12:25 What he drives: KTM
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Re: 3kj and 5bm engines
timon455 » Mar 26, 2013 09:41 pm
Re: 3kj and 5bm engines
by voodoojim » Mar 28, 2013 00:23
3kji and 5bm are the same pistons. There is no need to write this and misinform the people. The only difference is in the crankcase itself. pipes at 5bm become 3kji if only the resonators and the crankcase seats on them are adjusted. for example Yasuni er. everything fits.
drain pipe 5bm. whether they drank or not. So that she gives something, we need to change the volume of the pipe itself. and this is another song. don't cut the pipe. it doesn't work. verified 146%
Re: 3kj and 5bm engines
lui » Jun 25, 2013 1:43 pm
Re: 3kj and 5bm engines
klint » Jun 25, 2013 5:47 pm
Source
Adjusting the Yamaha Jog Carburetor
Let's say you've cleaned your carburetor and are ready to tune it. Reassemble everything in reverse order and start your scooter. In order for it to work at idle speed, you need to adjust it with a screw on the carburetor. On a Yamaha jog it is in a straight position, the slightly tilted screw is responsible for the quality of the mixture. First you need to tighten both screws to the maximum possible position. Next, unscrew the speed screw to the frequency you need (listen to the engine and if the wheel does not spin, but the scooter is running, the idle speed is set) and at the same time unscrew the mixture quality nozzle, but this should be done no more than ¼ of a full turn.
What to do if the carburetor is not adjusted?
If you've followed the above steps correctly and it doesn't help and your scooter feels rough, chokes, and misfires, you need a little more adjustment. It is recommended to unscrew the mixture quality jet another ¼ turn and look at the result. Ultimately, you can disassemble the carburetor and find the spool needle. It will have to be lowered by one notch, but then there is a possibility of loss of power of the scooter.
Yamaha scooter code table
Using this table you can identify your scooter down to the year of manufacture. This is very useful when buying a scooter, since you can determine the year of its manufacture, see if the original engine on it has been replaced with an engine of another model, if the frame is original, etc. And now the explanations:
Type designation:
model number assigned by the manufacturer
Scooter model:
the name of the scooter, which is often written on the lining
