Decking the Cylinder for a 0.7mm squish and Adding Boost Port
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- Опубліковано 15 жов 2024
- Welcome back to part three of this motor series worked on, carving out the boost port and decking and down the cylinder for an ideal squish band. We also went through a few hurdles along the way when it comes to the case has not been milled flat so if you guys are ever building a Engine from the ground up, that is definitely something to take into consideration.
Wow! Love the video!! I am new to the motiriybike scene, but me and small engines go way back. I was happily surprised that after some in-depth research on these chinese motors to run across your informative video. And so impressed to see someone so young paying such close attention to detail. And the fact that you are pointing out things that the seasoned hobbyist on this subject fail to mention is so great for me because like I said, I'm just picking up the hobby so way to go and keep it up!
Thanks for watching!
Awesome work mann 💯 you’re one of the best I seen work on these at your age, don’t let anyone tell u different.
Thanks glad the video helped ya out!
He is really good for any age
Enjoy your videos. Keep ‘em’ rolling.
Gr8 work bud! This attention to detail is necessary in becoming a good machinist/mechanic! Don't forget to have something you can hop on and Ripp whenever!!
Thanks for the support and yes having a good attention to detail is very important in this hobby
by the way, you made a point about the stock head not being centred and that the cnc head cools better. this is technically correct but not because of the combustion chamber, its because of the larger fins. The offset combustion chamber actually helps to keep piston crown temps down. other than that, this series was really enjoyable and informative. p.s im curious on how this motor actually performed vs how you thought it should've performed with all the work done to it, i know you posted a vid on the completed build but i don't think you told us your impressions.
@@molash-jg2hg I did a riding video with this engine
My squish band was 2.5mm stock on my new Zeda 80 firestorm. I found a thinner base gasket that brought it down .2mm and sanded the top of the cylinder by hand to a .7mm squish. My other Zeda 80 was 2mm and the best improvement I did to it was a .7 squish. It would never hit the pipe before that. I bought the California Motorbikes GTZ cylinder kit and a windowed piston. But your video let me know I may have a problem. I can see the windows at BDC.
Yup you will loose a bit of case pressure if it’s set up like that
Anyway, another great show 😁. I'm not brave enough to do the things you do; either that or l'm too lazy. Thanks again Keegan.
Gotta put in the work lol
Young man gots it going on! Great job bud.
Good job dude. Thanks for the pointers. Awesome video too👍
Great video. Your porting looks great and it should run amazingly. Have you balanced the crank and upgraded the bearings? I would try to bend back the crankshaft, but if you can’t, as long as the magnet doesn’t come in contact with the magneto, you should be fine.
Yeah it doesn’t come in contact just where this motor is being intended for high rpm I want it to be a strait s possible gonna pop the seal out and heat up the crank to bend it
Looking good
Thank you!
Try using a shop vac to cut down the metal shavings from making the mess. Just wear earplugs.
Boost port? New concept to me. Thanks.
Is that an LD head? What do you do for exhaust port difference between the cylinder and pipe flange?
Crank shaft bend? I had that on a phantom 85v3, l know still a piece of junk, just put the nut on loose and tapped it litely and it straightened right up with 1 or 2 blows. Like maybe a 1/2lb ballpeen.
Did you use heat?
@@keeganhache6667 no heat, just tapped it. It seems like they are able to wabble. Cam in the mail like that. No gap on one side of the magnet.
does the size of the cylinder window matter as long as the window reaches the edges of the port on the piston body (depending on how large you've ported it)
Don’t make your window wider then the intake port of theirs you will score up the cylinder and keep it below the intake floor at bdc
Be care full going to close to bottom may break
Hey any1 using sander making big mess to clean you can lay it on old sheet and you will have quick clean up.
Win I tried to deck my cylinder and made it flat the ledge on the head with a copper gasket .5mm the ledge on the cnc head would not fit completely in the cylinder and the head leaked so I had to put a small chamfer on the cylinder to get it to sit flat and seal
Good tip
@@keeganhache6667 I didn't know if this is a common issue or if it was unique to my situation
I really liked this one, really getting down to the "nitty-gritty" of things (little pun there). By the Bye, the offer is still open, I really have to get rid of some of my bike stuff, so my email is in my about section of my hardly used channel: you are most welcome to it if you want.
What you got all?
@@keeganhache6667 Mostly 2 stroke engines that I never even unboxed.
@@boydjensen3161 put your email down below maybe we can work something out any phantom’s?
Thx
Can you post a link or tell me where you got that sander please thank you
Canadian tire sells the belt sanders
How do I port it if I want top end
👍
What happened to the engine the faker frame did you blow it up
No still works great just testing this motor out
Power of engine he built sent it past mars man! 😂
Hey man you a mvp in the game bud great work youngn love it have and will be watching you guy. If you ever have moment lets have a conversation. Think it could help me alot. Thanks and keep it up.
eBay mzmiami 48mm gt cylinder but has 32mm intake 20 dollar+19 shipping
Ah okay will take a look
When you go make a video running the minarrelli fast
Very soon I got it on a road bike frame now
@@keeganhache6667 is it true that the minarrellis cold seize? that's what I heard somewhere