need an opinion on cylinder porting
- Thread starter Devilman910
- Start date
Ill have to see what i can find on there if its to much i probably wont get one i dont have that much to polish
alright so i went out this morning and did some more work on the intake port based on scot's pics and everyones help, i put the angles on the center posts and rounded the edge on the top port and the left and right ports, earlier in this post myusername said to leave it a little rough and a thread i saw awk08 had said that ken only polishes the exhaust port and leaves the intake relativley rough for "fuel atomization" not sure what that means or does but if ken does it it must be right the first link is the work i did today and the second is from yesterday
http://www.blasterforum.com/members/devilman910-11242/albums/96-plaster-project/4510-img-0287.jpg
http://www.blasterforum.com/members/devilman910-11242/albums/96-plaster-project/4508-img-0282.jpg
http://www.blasterforum.com/members/devilman910-11242/albums/96-plaster-project/4510-img-0287.jpg
http://www.blasterforum.com/members/devilman910-11242/albums/96-plaster-project/4508-img-0282.jpg
oh no you completely reversed all your ports. oh wait..... it's upside down... wow that wasn't funny. Looks great man that is exactly what i was talkin about. keep up the good work!
if you leave the ports rough, it causes turbulance in the port causing more fuel to mix with the air. if you polish it, you will have fuel just sitting on the bottom of the port and the air running smoothly over top of it. i'm not a professional engine builder, so dont quote that. i've done alot of research on building power though, and that is the easiest way for me to paraphrase what i've researched
here's some pics of one that i did get to ride and it really ripped for a home made port job
Is it the Picture or did you round out the part where the bottom and side walls meet
I did a little bit. my goal when porting is to give the mixture the clearest route to the cylinder as possible w/o changing any timing. i think i shrunk the center post on these a bit but you are operating at your own risk if you know what i mean. It's all about how willing you are to take chances with your motor. MY only rule i go by when porting is if it scares me to do something. don't do it
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