Doit Yourself Porting

[Sanddunejunkie]

OK guys I have my cylinders off and all cleaned up and I AM going to port. I am not looking to go radical Or turn this into a drag bike I ride trails climb hills and get into the occoasional drag race with my buddys. What I am looking for is more of a clean up port job. I am not looking to raise my exaust ports and change the timing. (I dont think) I have a pretty good Idea of what I think I should do, but i would like some suggestions, and maybe to get some ideas from the experince and knowledge that comes from this site so if you have experince at this sort of thing drop a line. PLEASE... you never know it might be your sugestion that letts me outrun.... YOU....... LOL any sugestions will be appreciated.

[Nighty]

Yes and as a addition to this:

 

when i look into my cylinders the port windows all seem to have a 90 degree angle at the sleeves.

 

when i look further into the ports you can see the different angels in the jugs.

is it ok to match the sleeves with the port window angles?

 

and what is a "bevel" ?

 

thanks.

 

sanddunejunkie, check this site out. it has great info and pictures.

lol when youre done with that site and understand everything then think again

if you really want to do this.

 

mac dizzy

[chase73]

te best thing i can teell you is chamfer the ports aafter your done !!!!!!!!!!! very important and I would invest in race logic templates if you really want to do it yourself

[Nighty]

Still curious about this:

 

Yes and as a addition to this:

 

when i look into my cylinders the port windows all seem to have a 90 degree angle at the sleeves.

 

when i look further into the ports you can see the different angels in the jugs.

is it ok to match the sleeves with the port window angles?

 

and what is a "bevel" ?

 

thanks.

 

sanddunejunkie, check this site out. it has great info and pictures.

lol when youre done with that site and understand everything then think again

if you really want to do this.

 

mac dizzy

 

Any comment would be great

[erbilabuc]

race logic port kit is what u need

[Stomp77]

I used the race logic sport port kit, its a magnetic template, i did not even use it to its potential. I only opened up the intake and smoothed my casting flaws, out, port matched the cases and opened the exhaust port just a hair, WAAAAAY inside of the sport port template. I saw a dramatic improvement in power, Used to its full potential the sport port kit would just about rip your arms off!!!! ps i dont work for em i just like what i bought!!!!!!!! its a 100 bones and I felt ripped off until i fired her up and went rocketing around the yard, just my 02 cents

[snowprophet1]

I did the race logic templates also. This is what you want! I let somebody ride my banshee today, and his is the next banshee I will be porting. It works! I never fouled a single plug since I ported it either! BUT...get the heavy duty springs for your clutch. The very first ride w/the porting, the clutch slipped. I threw in the heavier springs, and WOW! That was a few good years ago, and my clutch finally needs updating for the new pipes I got, but it took lots of abuse and held up a long time. I strongly recommend those templates.

[nate1999mxz600]

where do you get the templates?

[demsy]

do a search racelogic porting on google... i have rode a banshee with racelogic porting template.. that thing just screamed....

[snowprophet1]

www.racelogic.com

[itsaripper]

Nighty, to answer your question about the transfer tubes angles. The direction they discharge the fuel is a critical factor. First off their job is to displace the exhaust (burnt gas) with a new charge of fuel. The main transfer port (big one closest to exhaust) is angled to blow across the piston and hit oneanother to slow down. The auxiliarie ports (the smaller one back of mains) are usually aimed up at about 45 degrees. Then the rear port is angled up at (looks like about 60 degrees) to help push the exhaust out of the top of the cylinder. I said all that to say clean up the ports but don't raise or lower them usless you know what your doing.

The bevel is what you put on the edge of the port window. So the rings can go past and not hang up.

Hope this helps and didn't confused ya more.

[Oilsmoke]

Itsaripper

 

I agree with you on a cleanup, the tranfers is very Good & safe way to go, And going is what it's all about. A Cleanup to me Means remove the paint and texture. Without removing metal.

 

On the cyclinder liner I went little farther. the 90 degree edge on the stock liner I took half of it's width and 45'd it so the gases could flow over the edge easyer Didn't change the shape of anything.

 

Oh and It's A Ripper for free.

 

But the Gians on a Clean up Are worth it. My Sons SHee fast out Haulass for a 350.