Cylinder Porting DIY
- Thread starter OConnor Racing
- Start date
I'm not I'm just asking people who are going to working on there engine and maybe throw them out not to but sell them to me..... And for all you haters not to thread jack ,if your on a tight budget you can find a 250 piece rotary kit 249 Piece Rotary Tool Accessory Set This might not do what was seen in the video but if you just want to clean up the ports this kit is great.
I still don't understand how you get to the face of the intake ,the walls are easy..... I see you did the exhaust but what about the intake and the top of the engine.Can i polish the intake of no..I also have alot of little pits on the top near the spark plug..I started to sand it smooth but I don't know if I should of touched it ......
The face of the intake, you taper in toward the cylinder where it is flat. The knife edge or radious the divider.
I usually do this from inside the cylinder bore but you had batter not try that and damage the liner. It can be done from the intake side but take a lot longer and rounded bits
I usually do this from inside the cylinder bore but you had batter not try that and damage the liner. It can be done from the intake side but take a lot longer and rounded bits
I always do it from the inside of the cylinder aswell but like yfs101 said it's risky. dremmells are not forgiving on the cylinder wall. if u want to try it get a practice jug or atleast practice controlling the bits on a piece of scrap aluminum. most automotive shops discard/recycle intakes and cylinder heads off cars and they would be great to "get the feel of it".LOTS of multiple layers of duct tape(gorrilla) covering everything that might be suseptable to damage may help if ur tool kicks or gets away from u. A Dremel 225 Flex Shaft Attachment (snake tool)has a flexible, 36-inch shaft that attaches easily and adds an improved level of versatility to your project capabilities. this tool allows you to see what u are doing and adds tremendous amount of clearance to work at angles in confined areas. I've used the name brand and knock off versions and love them!!!! Practice and patience pays off big when you can feel the power a port job adds!!! within the next few weeks i will add a vid of me cutting triple exhaust ports and perhaps even mapping port timing. I'm a self taught novice with a motto" I alway's try to learn from all of my mistakes, but i would much rather learn from someone else's".
Ok I didn't take to much off the exhaust but I did polish it.and I did the ports he was talking about on the bottom . For the intake what kind of finish should be on there if not polish. What number sand paper can I use 220 , 400 , 1000 or higher or what?
im not sure on what grits to use but you dont want it polished the fuel will bead on a polished suface from what i hear or something to that
heres a link to some good reading for all you DIYers wanting to port their own cylinders.
Gordon Jenning's Archivek
Gordon Jenning's Archivek
just blew the top end of my motor, i know sucks so while its apart might as well beef it up a lili right! What your doing here will add how much more power to the blaster? Im a bigger buy but love my blaster and it needs more emp. will these small changes make that big of a difffrence?
im thinking of taking my jug to kens porting but what carb do i need? (with the mods i have in my sig) i have the stock carb. ken emailed me suggesting the 34mm but im hearing 34s are a pain in the ass to dial in. and also would shee carbs fit? i saw a sh*t load of shee carbs for cheap and for a pair on ebay
