Planet Minis

yamaboost480 · 10-08-2008, 09:02 PM

well ive started to port my head and i was wondering how much will actually make a difference. as of right now i have the intake ported and its about 20% bigger. i took about .100 out of it. any feedback or tips appreciated!

MiniRacer959 · 10-08-2008, 09:41 PM

how are you doing it yourself?

stunt-ur · 10-08-2008, 10:19 PM

Quote:

Originally Posted by MiniRacer959

how are you doing it yourself?

with a dremel hahahahahaha

70sdiscotrike · 10-08-2008, 10:52 PM

If you don't know what you're doing, it will actually reduce performance.

If you learned by going to youtube, and typing "engine porting", then you better drop the dremel or die grinder IMMEDIATELY.

Go to a junkyard and buy a set of old cast iron heads to practice on, then move up to some old aluminum heads. It takes quite a bit of practice to become good at porting and polishing a head.

DAVE

bat999 · 10-09-2008, 11:13 AM

Quote:

Originally Posted by 70sdiscotrike

If you don't know what you're doing, it will actually reduce performance.

If you learned by going to youtube, and typing "engine porting", then you better drop the dremel or die grinder IMMEDIATELY.

Go to a junkyard and buy a set of old cast iron heads to practice on, then move up to some old aluminum heads. It takes quite a bit of practice to become good at porting and polishing a head.

DAVE

Hey Dave I watched that video and thought it was pretty much common sense(for anyone that took autoshop in HS) or I guess I'm just one of the lucky ones, although I should have paid more attention in applied business principles.....I seem to just give stuff away.......

yamaboost480 · 10-09-2008, 12:07 PM

well i own a tool and die shop with my dad and i know the basic principles. just trying to get the feedback from people that have done it

bat999 · 10-10-2008, 08:18 AM

Just start off a little at a time, like disco said sometimes you can do more harm than good.....I start with cutters first, then stones and then fine sanding drums.......I have never polished a head just porting to a smooth feel....

vegatron75 · 10-10-2008, 09:23 AM

Search the forum.... This topic has come up b4.

70sdiscotrike · 10-10-2008, 07:12 PM

As Scott mentioned, start out with a carbide type bit. Once you chew away the bulk of the metal, then move to a sander or grinding stone.

Try to stay away from doing sharp angles, and go more with a smooth curve. Spend some time on the internet or a speed shop, and try to get some tips from the pros.

DAVE

crf124??? · 10-10-2008, 07:23 PM

All that I have done with my heads off my bikes is clean up the castings it seems to work good. ive done a 400ex, my superhead for my 50, and soon to do my crf450 head. It seems to help out alot just cleaning the castings/flaws in the head. Also to afraid to grind too much out and hurting my performance.

10-08-2008, 09:02 PM	#1 (permalink)
yamaboost480 PM Newbie Join Date: May 2008 Posts: 36 My Mood:	Porting my head... well ive started to port my head and i was wondering how much will actually make a difference. as of right now i have the intake ported and its about 20% bigger. i took about .100 out of it. any feedback or tips appreciated!

10-08-2008, 09:41 PM	#2 (permalink)
MiniRacer959 1st Gear Member Join Date: Sep 2008 Location: Gilbert AZ Posts: 242 My Mood:	Re: Porting my head... how are you doing it yourself?

10-08-2008, 10:52 PM	#4 (permalink)
70sdiscotrike 2nd Gear Member Join Date: Dec 2006 Location: Lake Charles, Louisiana Posts: 580	Re: Porting my head... If you don't know what you're doing, it will actually reduce performance. If you learned by going to youtube, and typing "engine porting", then you better drop the dremel or die grinder IMMEDIATELY. Go to a junkyard and buy a set of old cast iron heads to practice on, then move up to some old aluminum heads. It takes quite a bit of practice to become good at porting and polishing a head. DAVE

10-09-2008, 12:07 PM	#6 (permalink)
yamaboost480 PM Newbie Join Date: May 2008 Posts: 36 My Mood:	Re: Porting my head... well i own a tool and die shop with my dad and i know the basic principles. just trying to get the feedback from people that have done it

10-10-2008, 08:18 AM	#7 (permalink)
bat999 2nd Gear Member Join Date: Dec 2006 Location: Greensboro, NC Posts: 505 My Mood:	Re: Porting my head... Just start off a little at a time, like disco said sometimes you can do more harm than good.....I start with cutters first, then stones and then fine sanding drums.......I have never polished a head just porting to a smooth feel....

10-10-2008, 09:23 AM	#8 (permalink)
vegatron75 2nd Gear Member Join Date: Jul 2006 Location: South of Kansas City Posts: 637	Re: Porting my head... Search the forum.... This topic has come up b4.

10-10-2008, 07:12 PM	#9 (permalink)
70sdiscotrike 2nd Gear Member Join Date: Dec 2006 Location: Lake Charles, Louisiana Posts: 580	Re: Porting my head... As Scott mentioned, start out with a carbide type bit. Once you chew away the bulk of the metal, then move to a sander or grinding stone. Try to stay away from doing sharp angles, and go more with a smooth curve. Spend some time on the internet or a speed shop, and try to get some tips from the pros. DAVE

10-10-2008, 07:23 PM	#10 (permalink)
crf124??? 1st Gear Member Join Date: Oct 2008 Location: Indiana, PA Posts: 170	Re: Porting my head... All that I have done with my heads off my bikes is clean up the castings it seems to work good. ive done a 400ex, my superhead for my 50, and soon to do my crf450 head. It seems to help out alot just cleaning the castings/flaws in the head. Also to afraid to grind too much out and hurting my performance.

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