Thanks for the comment. What are you using this engine for?

@@Perkins.porting mcd rally rc car it's a 45cc rovan engine with a losi 5t dominator exhaust

@@2strokerc5782 yeah on the 45 timing duration has plenty of room to play. Happy to see you doing this on your own and experimenting. Keep up the good work sir.

DDM CHOCLATE MINTS FTW! I remember when they first came out with those.. time flys, been pedding since 1995, just bought a nice barely used XPED and just got a stuffed crank GP290 for it

David T you mean while I'm doing the work? That's a good idea

South Florida RC kings Yeah that would be awesome. I haven't seen any videos on KZfaq of that done yet. especially on a goped engine.

Joshua Lara , your welcome. . stickers are free to customers.

Very carefully

4300 series dremel and metal wand is my tool of choice.

@@Perkins.porting rite on thanks for getting back to me brotha appreciate it! 👊🏼

@@JesseK410 Search tungsten bit set on fleabay They are around $12 a set you need the 1/8” shaft version for dremel.

Grandpaganja G what kind of stroker exactly, and what engine?

To answer your question... if you're worried about that, make adjustments to piston until it runs as desired . If you mess up just replace the piston.

85Randall I made this video as an introduction.. just starting out with your first time you don't really need to worry about all that. I do have a squish meter and degree wheeel.. but honestly if someone already has those tools or know they are required, they don't need instruction from me.

Port "time" is probably the most important factor for building the engine to your needs, but it is "port time area" that also includes the width and corner radius's of the port. There are some old calculations you can do by hand to figure them out, and there is aging and going extinct 2-stroke porting software, like TSR, (Turner now retired), that calculates port time area for any given application. None of it seems to be perfect to me, but they seem to work better than "trial and error" as far as time invested. Doug @ ESP

Here is something you might like to know. From a program called "degree it" in my TSR software, I discovered that one degree of added duration at the exhaust and the intake is really really close to .005" of material. So if you want to add 3 degrees of duration to those ports, you know .015" will be very close, closer than you can measure with a degree wheel for the slight existing error repeatably.

I understand why he is saying you don't need to worry about all that now. No beginner is going to a calipers and what not to measure thousandths

controlling the speed correctly prevents this. large bits spin slow, small bits spin fast. I never use anything on my bits, just dry.

I learned if you coat your bit with wax it will not clump up

Thanks, Hopefully I can make an updated video soon.

Nitrow Boxhead bounty it changes timing, the more fuel you allow in per stroke lengthens the time it take to process. . that in combination with a 100+ lb. load creates a low end lag.. I usually try to find a healthy medium with gopeds and mostly just widen the intake with a minor timing change.

I understand that a richer mixture burns slower. So would more air/oxygen/n2o help with the low end lag if time of processing is lengthened with more fuel? with the same piston size?

Nitrow Boxhead bounty yes I see where your going, this tutorial is for non reed engines... if you had a reed valve to regulate intake timing your theory would prove effective.

Thanks for the input!

Nitrow Boxhead bounty my pleasure

caged lion it's not a whole hell of a lot different.. follow same rules and your good.

$100

caged lion timing needs to be adjusted

Yes

@@Perkins.porting OK cool just was checking I have you on Facebook as a friend an was making sure video was from you lol

Wrong Video........