Honda Spree and Elite 50 Forums

So i grabbed a little flat head and lightlyl0 the exhaust ports. My god the carbon was so bad. The inner ports was almost 3mm thick carbon and the outside of exhaust port was 1-2mm thick all around. Started wondering no wonder he didnt want it lol

Update. I started to port the boost area to match the ruima. I did my homework and looked where to stop cutting on the block.
I know i shouldnt take his word and maybe just install the bbk and try and tune it but i also notice that the exhaust port are real small for a 51mm
I have bought a ton of ...

Just picked up ruima 51mm bbk. Got it free :woot:
44mm 2ab mini stroke
Af16 unported
7.1 gearing

I would like to max out the rpm cause old owner gave it to me cause he said doesnt rev as much
I want to learn about port timings and give the best performance
I am still learning and please let me ...

No noise. Only when im doing WOT it does it. If im just using 1/4 throttle it doesnt cut out. I have used alotof jets and nothing seems to work. Can a mini stroke use 120-130 jets without it seizing? I want it to have enough fuel and 120-130 sounds a bit low

The block came with a nipple tapped in by the oil plug. I could plug it and make a one on the lower manifold if needed?

I put in the stock cdi and acts the same way. Illl try and get a temp guage sometime today and see if its overheating. Ive been riding around lately and doing plug chops they all look like light black carbon but if i use bigger jets like 145 it gargles then slow down alot
Actually im using a new ...

Thanks

I have a unknown bore. Would like to know what brand it is
It has a "A" stamp on the exhaust port area. And what specs its for
Boost port and everything else is pretty small. I have a polini piston and head on it right now