Porting its been covered befor but....

[buzzy613]

Alright boys and girls my valve seats need replacing and i plan on doing it really soon but when i do i want to self port my head or atleast smooth out the casting marks does anybody have and tips?

 

[heyhey]

look for videos on youtube.

 

[beastlywarrior228]

Just smooth it out dont take much material off and DONT touch the valve guides

 

[Mathius]

Here man. Watch this. http://www.powerblocktv.com/player/show_player.php?ep_show=HP&ep_num=HP2012-09

It'll give you a basic run down of what you need to do.

 

[buzzy613]

thanks mathius, and i was wondering about that beastly

 

[lbjamm]

On the intake, remove the casting marks and flash but leave it a little rough. On the exhaust, make it smooth as glass. JMO from what I've read and done.

 

[Mathius]

I don't really think that having turbulence in these little motors would make much of a performance difference?
You could smooth things out nice in the cylinder, the fuel coming threw the intake will atomize before it gets that far.

 

[duneracerweston]

if you smooth the intake to much it wont mix well, but smooth it up to about a 400 grit bit and the exhaust smooth it up nice, port matching is the best thing to do, and polish the chamber to a DULL mirrior, to polished and it wont burn right, to rough and it wont flow, id just spend the money and have it ported but thats me..

 

[buzzy613]

i dont know what i want to do 100% yeat i want to get my valve seats replaced and possibly rig up a turbo

 

[Mathius]

and possibly rig up a turbo

If you do, your gonna have to go EFI. You know that right?

 

[lbjamm]

if you smooth the intake to much it wont mix well, but smooth it up to about a 400 grit bit and the exhaust smooth it up nice, port matching is the best thing to do, and polish the chamber to a DULL mirrior, to polished and it wont burn right, to rough and it wont flow, id just spend the money and have it ported but thats me..

Exactly what I did to mine. Made a big difference.

 

[beastlywarrior228]

You can run a turbo with a carb

 

[buzzy613]

You can run a turbo with a carb

yep by buddys banshee was carbed but he was running on alky i planed on like 3 to 4 lbs witch is doable and safe for the internals

 

[sparkymichigan]

What do you all think of this port and polish job?

 

[beastlywarrior228]

id try and polish the exhaust up more, that's where yiu want as little turbulant flow as possible

 

[lbjamm]

Yeah. Make that exhaust port like glass.

 

[lbjamm]

Ain't it a bitch to get around them guides. LOL

 

[lbjamm]

For those tight spaces, try a Q-tip and some lapping compound. Worked great on mine.

 

[sparkymichigan]

Not sure, it was already done.

 

[duneracerweston]

Polish the chamber up a bit more and dont polish the exhaust to a mirror.. its not a 2 stroke, but you do need it super smooth.