Planet Minis

cyclerider57 · 02-02-2007, 05:40 PM

Well it was fairly recent. I think it was last month some time.

uno4cinco · 02-02-2007, 05:44 PM

alright. thanks.

twitchy · 02-02-2007, 05:49 PM

Quote:

Originally Posted by storminnorman07

i have been trying my hand at this black art of porting here is a pic of the intake a 82 xr 80 head i'm not done with it yet lets see what kind of mistakes i have made http://i50.photobucket.com/albums/f3...dayrace022.jpg

build up the floor and take more out of the ceiling. The point or goal of porting is to enlarge the port by straightening out the airflow path.

cyclerider57 · 02-02-2007, 05:50 PM

Quote:

Originally Posted by uno4cinco

alright. thanks.

I went ahead and looked it up really quick for you...

http://www.planetminis.com/aftermark...rting-term.htm

micro75 · 02-02-2007, 06:05 PM

Heres a few of my new lifan 23/27

HACKMUNCH · 02-02-2007, 07:27 PM

Looks Good John But Dont Be Afraid To Cut Out The Valve Guides, You Can Trust Me As You Have Seen The Results.

RcWannabe · 02-02-2007, 07:58 PM

Quote:

Originally Posted by micro75

Heres a few of my new lifan 23/27

lookin good man, hope to see you at all the races this year.

storminnorman07 · 02-02-2007, 10:55 PM

twitchy, thanks for the input like i said i am not done yet just started on it. i don't know if you seen an old stock xr 80 port but that ports are really small. i already raised it 5mm

rusky · 02-02-2007, 11:07 PM

what kind of material do you use to fill in parts of a port??

micro75 · 02-03-2007, 08:27 AM

Thanks Dr. Dom I am going to cut the guides on the next head but what I am wondering is guiding the mixture around the valve stem instead of it hitting and being forced to change direction might be an advantage after we get some stuff done it will be nice to do some dyno testing and see

HACKMUNCH · 02-03-2007, 09:29 AM

i agree John, like i was telling you on the phone, i think jialing has changed the heads on these new engines and it is for the worse believe me lol.

tuknrm · 02-03-2007, 09:44 AM

John whats goin to take to get one these heads on my bike

MAZZ77X · 02-14-2007, 04:50 PM

What kind of sanding bit do you use to get the final finish? I can shape with a fine carbide cutter but am having trouble finding a sanding bit small enough to get in the small confines of the stock GPX ports. Thanks

MAZZ77X · 02-14-2007, 05:07 PM

Anybody???

micro75 · 02-14-2007, 06:32 PM

I use a slotted mandrel for finish work hope this helps check out CC Specialty tools

stlwalnut · 02-15-2007, 03:23 PM

Quote:

Originally Posted by MAZZ77X

What kind of sanding bit do you use to get the final finish? I can shape with a fine carbide cutter but am having trouble finding a sanding bit small enough to get in the small confines of the stock GPX ports. Thanks

I used a mandrel bit with sanding rolls....coarse.

micro75 · 06-27-2008, 10:55 AM

I thought I would try to revive this thread with some pics of my latest try on the YX 150 head with stock valves sorry about the pic quality

rjpracing · 06-27-2008, 01:00 PM

here are some cosworth ports!
http://www.xs-engineering.com/xsstor...99_general.jpg

cyclerider57 · 06-27-2008, 05:04 PM

Quote:

Originally Posted by micro75

I thought I would try to revive this thread with some pics of my latest try on the YX 150 head with stock valves sorry about the pic quality

Looks like you've changed how you're doing them a little.

rjpracing · 06-27-2008, 05:08 PM

who has the pic's of finches glued in valve guide? top quality work on that head! lol

02-02-2007, 05:40 PM	#41 (permalink)
cyclerider57 Got Un-disappeared Join Date: Nov 2003 Location: Kansas Posts: 4,321 My Mood:	Well it was fairly recent. I think it was last month some time. __________________ The wise understand by themselves; fools follow the reports of others. Goodness speaks in a whisper, evil shouts. -Tibetan Proverb

06-27-2008, 10:55 AM	#57 (permalink)
micro75 2nd Gear Member Join Date: May 2006 Location: Hermitage, PA Posts: 561	Re: Porting Pics I thought I would try to revive this thread with some pics of my latest try on the YX 150 head with stock valves sorry about the pic quality

06-27-2008, 01:00 PM	#58 (permalink)
rjpracing Aussie-Aussie-Aussie Oi Oi Oi! Join Date: Dec 2003 Location: sunnyvale ca usa,five dock nsw ,australia Posts: 778 My Mood:	Re: Porting Pics here are some cosworth ports! http://www.xs-engineering.com/xsstor...99_general.jpg

06-27-2008, 05:08 PM	#60 (permalink)
rjpracing Aussie-Aussie-Aussie Oi Oi Oi! Join Date: Dec 2003 Location: sunnyvale ca usa,five dock nsw ,australia Posts: 778 My Mood:	Re: Porting Pics who has the pic's of finches glued in valve guide? top quality work on that head! lol

02-02-2007, 05:44 PM	#42 (permalink)
uno4cinco 3rd Gear Member Join Date: Sep 2005 Location: Moorpark, Ca Posts: 1,342	alright. thanks.

02-02-2007, 06:05 PM	#45 (permalink)
micro75 2nd Gear Member Join Date: May 2006 Location: Hermitage, PA Posts: 561	Heres a few of my new lifan 23/27

02-02-2007, 07:27 PM	#46 (permalink)
HACKMUNCH 3rd Gear Member Join Date: Apr 2006 Location: BRUNSWICK OHIO Posts: 5,239	Looks Good John But Dont Be Afraid To Cut Out The Valve Guides, You Can Trust Me As You Have Seen The Results.

02-02-2007, 10:55 PM	#48 (permalink)
storminnorman07 2nd Gear Member Join Date: Nov 2005 Location: new castle, pa Posts: 780	twitchy, thanks for the input like i said i am not done yet just started on it. i don't know if you seen an old stock xr 80 port but that ports are really small. i already raised it 5mm

02-02-2007, 11:07 PM	#49 (permalink)
rusky 2nd Gear Member Join Date: Nov 2006 Posts: 333	what kind of material do you use to fill in parts of a port??

02-03-2007, 08:27 AM	#50 (permalink)
micro75 2nd Gear Member Join Date: May 2006 Location: Hermitage, PA Posts: 561	Thanks Dr. Dom I am going to cut the guides on the next head but what I am wondering is guiding the mixture around the valve stem instead of it hitting and being forced to change direction might be an advantage after we get some stuff done it will be nice to do some dyno testing and see

02-03-2007, 09:29 AM	#51 (permalink)
HACKMUNCH 3rd Gear Member Join Date: Apr 2006 Location: BRUNSWICK OHIO Posts: 5,239	i agree John, like i was telling you on the phone, i think jialing has changed the heads on these new engines and it is for the worse believe me lol.

02-03-2007, 09:44 AM	#52 (permalink)
tuknrm PM Newbie Join Date: Dec 2006 Location: Wonderful NE Ohio Posts: 37	John whats goin to take to get one these heads on my bike

02-14-2007, 04:50 PM	#53 (permalink)
MAZZ77X 3rd Gear Member Join Date: Oct 2006 Location: Right down the road from NJMP Posts: 2,363 My Mood:	What kind of sanding bit do you use to get the final finish? I can shape with a fine carbide cutter but am having trouble finding a sanding bit small enough to get in the small confines of the stock GPX ports. Thanks

02-14-2007, 05:07 PM	#54 (permalink)
MAZZ77X 3rd Gear Member Join Date: Oct 2006 Location: Right down the road from NJMP Posts: 2,363 My Mood:	Anybody???

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

02-14-2007, 06:32 PM	#55 (permalink)
micro75 2nd Gear Member Join Date: May 2006 Location: Hermitage, PA Posts: 561	I use a slotted mandrel for finish work hope this helps check out CC Specialty tools