Tuning a B1 China replica

ill have the 20mm adjustable carb for this bike in a month or so

what kinda of adjustments for the 20mm carb? Jets? or screws?

I'D JUST BUY FROM ''SONIK'' BECAUSE HE'S GOT A GOOD PRICE ON THESE,REALLY HAS THEM IN STOCK,AND IS A REAL BUSINESS NOT SOME FLY BY NIGHT E-BAY OR SWAP MEET GUY.
OH YA I THINK HE STILL HAS FREE SHIPPING ON THESE AND HAS MODS TOO.

JSIGONE !


I looked at your pics of the C1 engine, and my coolant passage is completly different from yours !

My collant passage is all the way around and has square teeth on both inner and outer sides that runs from top to botom.... This is weird ! So this means there is 2 versions of this engine !

where did you get your bike from?

Can you post pics?

this is what the top of the head is suppose to look like
http://www.pocketbikeplanet.com/gall...at=500&page=21

this is what the bottom of the head is suppose to look like
http://www.pocketbikeplanet.com/gall...at=500&page=22

Does ur look like that?????? Thats the REAL blata motor

I did dome more wrenchin on the bike last night...mission was to get the squish down. As I said before, when I put a piece of 2mm solder in the head, there was no contact so the squish was more then 2mm. I removed the head, removed the HG that was 1.4mm thick, installed the head w/o a HG nor RTV to see where the impact would be....there was NONE. Tightened down the head, put a piece of solder and the squish was 1.70mm....still too much. Goal is .35mm to .50mm for the squish. So if I added the new squish + old HG the stock squish was 3.1mm can u say compression loss Anyways, I noticed the piston was a dome shape unlike the real B1 has a flat top piston. Could this be another power robber...iduno. On the C1 head cap, there is a small groove in the dome that is recessed in a bit, I measure this to be 1.35mm. Here is a pic of the real B1 head cap, I believe their recess part is less prolly .5mm-.75mm jus from eye ballin it. So that is another key tolerance point. My theory is that lil recessed part is what sets the B1 squish after the HG is added.

YES IT DOES LOOK LIKE THAT ! like the pictures links above.

Ok, so your's ins'nt the same? Or am I getting confused?

mine is the same way think ur getting too excited

LOL !

so did you do any grinding/smothing or polishing of the water passages to help cooling? Let me know !

nope I didn't touch the water passages......

Any one knows what is the stock C1 Jet size is, and what can I upgrade with is B1 one going to work?

Thanks

B1 are not the same as the replica jets, you will need to get a Del'Orto carb

I gave up trying to find the right jet to fit in the C1 clone carb. I just bought a Dellorto 14/14L to simplify my pain. I'm not sure how big the jet that came w/ the C1, I heard it was between 74 and 80 and another source said it was 92...so iduno. The 14/14L dellorto came w/ a 68 jet.

suck, I just don't have $180 to spend on the carb.

$58 bucks
http://www.midsouthminimoto.com/inde...ROD&ProdID=227

this is little intake I made, and I think it's going to take more then stock jet to balanced with the fuel mixture, ho ho ho!!!

this looks like same thing we have, how is it different?

built better, the slide doesnt stick and u can get jets for it. I've tried at least 4 different motorcycle shops looking for a Jet to fit on the C1, nota, nothing. Switched to dellorto and now everyone has those jets and so do my friends so I can try their jets to tune my bike