Thank you to all who took the time to chat in the Premier - It was really cool getting to chat with you all and getting tips and suggestions - thank you.

One thing that may be worth trying, Youtuber @ASoftaaja removed the lower ring and made HP gains from that alone. At these RPMs, any friction reduction = power gains. 2stroke stuffing also came to the same conclusion (not the rings, but any drag in the engine at this speeds robs HP). Running more oil has also proven gains for the same reason (tech document published by Kawasaki ~30yrs ago - though oil tech may have caught up enough to make that moot)

love the video, 2 stroke dyno tuning content is hard to come by, love to see more

just found you, im hooked. no crap just fact. no crap music.  you are very clear on what you are doing

Really good gains from raising the exhaust port, with these small capacity two strokes every tiny modification matters.
I've no doubt you will see extra power with the exhaust sealed up and regaining backpressure and further gains when optimising ignition timing and jetting.
Looking forward to the next video!!!

The most-surprising thing is how just the first small grind instantly tanks the torque range.. Not linearly but sharply.. It shows how well-designed it is from factory for more-conventional riding! Still, the upgrade(s) are great & I'm impressed at that, naturally. Great job documenting m80.

An old trick is to run two base gaskets, to raise all the ports combined with a thinner head gasket, so compression is not lost. It seemed to work fairly well.

This is the sort of channel I’ve been looking for. Great stuff keep it up 👍

16:30  I don't know how you will flow test the ex but I can tell you that a flow bench will only give valid figures for the tested conditions but the running conditions are totally different. The pressures are much higher, the temperature is much higher (which means the speed of sound and viscosity of the gas is much higher). In running conditions it can have choked flow which the flow bench won't duplicate.
The flow bench will give some thought provoking info but don't bank on it because it can be totally wrong.

I'd love to see this project progress! I actually found this channel from the sidebar recommendations while watching 2Stroke Stuffing.
Subbed!

You're not adding that much exhaust timing to effect the power band. But the extra blow down will definitely help the over rev. Those cylinders are so small it would be tough to raise the transfers.
I would give it more intake timing, and maybe re shape the boost port.
If you have the room., or enough ring pin spread on the exhaust side to bleed  port the exhaust .

Just found you. I'm trying to make my mudbug(TF125) faster than a DR200, you are inspirational. I have a million questions but I will watch more videos first hahaha. Cheers from New Zealand

Bigger Carb needs and Transfers also need to be done for Maximum power from2T👍🚀

One of the best 2t channel that i love .

Brilliant walkthru....loads info....big thanks

Great information!

Very interesting!

My mate had an AR50 in the 80's...An answer to the 'Fissies' that was the only the real bike a 16 year old could ride back then that didn't look like a moped...I think a few Japanese manufacturers jumped on the british 50's band wagon with different 50's after that...Use to see them everywhere...I went the Lambretta route back then....a lot more potential to tune as they are pretty basic engines but all the same tuning stuff applied...I even used a RD125 reed valve on my Lammy back then...Fantastic fun all round in the 80's for us young bike/scooter boys...Loads to learn and loads to ride on the cheap....I never went for any of the them/us bikes/scooters thing cos most of my school mates bought 50cc bikes...so I knew them all as mates before....I use to park up with them and chat on  my Lammy...lol

Really impressive gains! Keep it up!

love your content