Lateral Gas Porting on a 2 stroke to gain hp

Lateral gas porting was taught to me by Matt Kneen. He built winning snowmobiles for years and used this technique in them. If you want to read a thread he is in this is a great one.

I do this to all of my personal builds and see a great improvement with increased compression, lower temps, and larger carbs.

#2stroke #Enginetuning #Mopeds

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[Brittvanegas]

2 stroke master here. Gas porting works best on 4 stroke motors. This has been tested by yamaha and Suzuki in the 1990s, the Turbulence on the ring when it's exposed to the transfer and exhuast ports with the gas ports created ring flutter and also on the way down the rings would get snagged by the ports creating cylinder scratching. And ring failure. Not to mention a loss of 0.2 hp

[postulator]

Drag racers have been gas porting pistons for decades because of very thin rings with little tension. Gas pressure at ignition really forces ring into cylinder wall. Keystone rings work well too.

[ink_stain]

Been running my polini for 2 seasons. I’ve followed several build guides but have never seen this. it always looks perfect when I check it But I’m def getting flutter! Hopefully this will help. Keep up the good work man.

[joshe]

Very Nice video! Keep up the good work man

[dangerfpv]

Absolute loving your videos. Keep up the amazing work!!

[thomaspeffer]

Thank you CornPed!!! I did the gas porting and the plug side gapping you showed and OMFG the polini is so fast! I'm not joking bro its insane paired with a proma circuit pipe. Thanks bro you are the shiz😎

[tylersvensson]

Could you make a porting video for beginners

[RandyPopPez]

I think to get the most out of my Jawa, plus it likes to soft seize. I think I need to do this. All I can do to make this little wh**e get to 45mph.
Ok gonna do this before I slap it back together.
Your channel has really helped me. Thank you.

[joshe]

Re-watching this video one month later, would it be some sort of not good to put a lateral gas port on the piston where the exhaust port is?

[Psyo]

I've been porting chainsaws for years and never would've thought about piston porting and probably v wouldn't have heard about it if i didn't see your video it's brilliant and most husqvarna saws use a single ring

[waynekerrgoodstyle]

Cool video, can't wait for the next one.

[rbarker]

That induces carbon buildup creating stuck rings in 2000 miles. The Piston seizes up at the bottom skirt area. From overheating from lack of lubrication/lean mixture. Only drive it at night😅😅😅😅 or do what someone did in the 70s that is drill approximately.020 deep divots on both piston skirts to catch oil. 1/4 drill you can drill them evenly spaced in a pattern if desired at least five divots no need for more than 10 on each skirt. Then you can haul ass Non-Stop

[klausbrinck]

Could you please make a video with a comparison of the stock piston, compared to this one... It all sounds great, but there´s 100 YTers doing they same, and also never showing any plausible results... It could all also be just fairy-tales...

[brandonjennings]

Good video I look forward to your videos

[Driessens_Peter]

can anyone explain to me what the purpose is of the 2 blind big gaps above the pistonpen? i guess it has to do with cooling or some sort? cant find any info on that

[Paul_Gale]

Awesome, Bro
Thanks for the info . Interesting! only seen it on 4 stroke car engines
In which direction does the gas flow through piston ring land holes?

YT really supports your channel recommending 2-year-old videos . your doing something right.

[ArnaldoDejesus-jo]

How much would it cost to sell me? One of them premeet by you to put on my punch mopet engine ??

[scroogehowsshehandle]

Hey love the info is it possible that you could get a zoomed in image of what it looks like after I have a older Franco morini s5 engine that all use the same bottom end but the top end uses different cylinders and to of the top ends have double piston rings but I have one rope end that only uses one ring if you could up load a image or send me an image of what it looks like when done and you probably answered this already but if I may ask how come this wouldn’t work on double ring basically double the holes and offset them just wondering

[abelortiz]

So it’s a single ring piston…
Do you put the piston ring back on after you drill the holes???

[scroogehowsshehandle]

Also is it true that if my cylinder has a chip or dip below or above the cylinder ports that it’s still good to run or something along them lines?? Just wondering your thoughts strange thing is that this engine ran fine until the main drive sprocket broke I will say I did have quite a bit of oil spitting out the back of the silencer so is that also known as blow by??