Planet Minis

LongMooie · 07-20-2009, 11:09 PM

ok i have some free time on my hands and untill i can afford to get a 70 head worked for my 50 id like to try to port my stock 50 head, ive looked but cant find and information can anyone help with info, photos, video etc

thanks

Motarded · 07-21-2009, 12:59 AM

I will send a head with the crank. I have wenesday off

LongMooie · 07-21-2009, 11:13 AM

wicked thanks mate.
any info on head porting? anyone?

klxrider245 · 07-21-2009, 12:07 PM

Well the key is obviously more air flow....so make sure your valves and springs are out and then get the intake gasket and scribe around the opening where theirs extra metal inside the gasket to see how much you can cut but dont do to much cause youll get gasket faliure......the object to opening the ports is not really to make them bigger but to clean them up and cut down on turbulence and alow the air to flow more smoothly because air doesnt like to turn corners or go around corners. Use an abrasive roll to cut it i recommend an 80 grit, but remeber just be patient or else youll cut to much

klx11491 · 07-21-2009, 12:21 PM

Check this link out from thumpertalk ----> How to Port Your Engine - ThumperTalk

LongMooie · 07-21-2009, 12:29 PM

Quote:

Originally Posted by klxrider245

Well the key is obviously more air flow....so make sure your valves and springs are out and then get the intake gasket and scribe around the opening where theirs extra metal inside the gasket to see how much you can cut but dont do to much cause youll get gasket faliure......the object to opening the ports is not really to make them bigger but to clean them up and cut down on turbulence and alow the air to flow more smoothly because air doesnt like to turn corners or go around corners. Use an abrasive roll to cut it i recommend an 80 grit, but remeber just be patient or else youll cut to much

sound simple enough! i know theres more that can be done thats not so simple but this is a good start thanks

i also read about the exhaust pipe outlet being drilled out with a tapered bit anyone have info photos would be great

LongMooie · 07-21-2009, 12:35 PM

Quote:

Originally Posted by klx11491

Check this link out from thumpertalk ----> How to Port Your Engine - ThumperTalk

the last step explaned the exhaust port to header

thanks

i think im off to the garage to strip the fiddy down
its way to hot to ride im off work for awhile so i gotta do something before i go mad

50rider340 · 07-21-2009, 01:00 PM

i can see the needle files working well for a 2 stroke ports, but on a 4 stroke head you cant get the angles you would need to do a good port job. What is on thumper talk is more of a port clean up than an actual port job.

What you need to get is a dimond grinder bit and a drill or a dremel works well to. This will take material off much faster. Like others have said your dont want to reem the crap out of it so its giant. On a stock head going a little bigger is ok but not to much as the valves are so tiny as it is. Some people cut the guides while others dont think thats safe. Its all opinion.

firepower354 · 07-21-2009, 01:48 PM

You gotta think like an air molecule

Paxracing · 07-21-2009, 01:51 PM

Quote:

Originally Posted by LongMooie

ok i have some free time on my hands and untill i can afford to get a 70 head worked for my 50 id like to try to port my stock 50 head, ive looked but cant find and information can anyone help with info, photos, video etc

thanks

Do you smoke ? If so port a little and blow in the port.

LongMooie · 07-21-2009, 01:57 PM

Quote:

Originally Posted by Paxracing

Do you smoke ? If so port a little and blow in the port.

no i dont smoke! do you?

Paxracing · 07-21-2009, 01:59 PM

NO Trying to help you. but we port 5 -10 heads or cylinder a week.

firepower354 · 07-21-2009, 02:05 PM

Uncle Don's not just blowing smoke

LongMooie · 07-21-2009, 02:06 PM

Quote:

Originally Posted by 50rider340

i can see the needle files working well for a 2 stroke ports, but on a 4 stroke head you cant get the angles you would need to do a good port job. What is on thumper talk is more of a port clean up than an actual port job.

What you need to get is a dimond grinder bit and a drill or a dremel works well to. This will take material off much faster. Like others have said your dont want to reem the crap out of it so its giant. On a stock head going a little bigger is ok but not to much as the valves are so tiny as it is. Some people cut the guides while others dont think thats safe. Its all opinion.

so how do i cut the valve guides while im in there?
We have burrs at work i have access too
Im not looking to go crazy as this is the first time i have attempted this type of engine work apart from building big bore engine, clutch kits etc etc...
i would like to do big valves but i think thats beyond my skill level

as i start ill post some photos as this might help anyone else thinking about doing the same to there 50 head

LongMooie · 07-21-2009, 02:10 PM

Im 32 and ive missed so much fun not smoking

Screw the port job im off to the head shop for a pipe and pancake

LongMooie · 07-21-2009, 02:13 PM

YouTube - Shmoke and a Pancake

LongMooie · 07-21-2009, 07:51 PM

Well its too late to turn back ive been hard are work in the garage ****ing around with the ports on the 50 head, ive never done porting before so i dont expect it to be up to par and ive most likely taken too much out or not enough but i gave it ago. i still have to take the head to work and wash it out and blow it out with the air line

comments welcome

LongMooie · 07-21-2009, 08:43 PM

LongMooie · 07-21-2009, 08:44 PM

LongMooie · 07-21-2009, 08:46 PM

07-20-2009, 11:09 PM	#1 (permalink)
LongMooie 3rd Gear Member Join Date: Jun 2005 Location: originaly UK! now Central valley, Cali Posts: 1,114 My Mood:	head porting (how to?) ok i have some free time on my hands and untill i can afford to get a 70 head worked for my 50 id like to try to port my stock 50 head, ive looked but cant find and information can anyone help with info, photos, video etc thanks

07-21-2009, 12:59 AM	#2 (permalink)
Motarded 3rd Gear Member Join Date: Aug 2004 Location: RIVERCIDE SO CAL 951 Posts: 4,972	Re: head porting (how to?) I will send a head with the crank. I have wenesday off

07-21-2009, 11:13 AM	#3 (permalink)
LongMooie 3rd Gear Member Join Date: Jun 2005 Location: originaly UK! now Central valley, Cali Posts: 1,114 My Mood:	Re: head porting (how to?) wicked thanks mate. any info on head porting? anyone?

07-21-2009, 12:07 PM	#4 (permalink)
klxrider245 3rd Gear Member Join Date: Nov 2004 Location: RIVERSIDE Posts: 1,017	Re: head porting (how to?) Well the key is obviously more air flow....so make sure your valves and springs are out and then get the intake gasket and scribe around the opening where theirs extra metal inside the gasket to see how much you can cut but dont do to much cause youll get gasket faliure......the object to opening the ports is not really to make them bigger but to clean them up and cut down on turbulence and alow the air to flow more smoothly because air doesnt like to turn corners or go around corners. Use an abrasive roll to cut it i recommend an 80 grit, but remeber just be patient or else youll cut to much

07-21-2009, 12:21 PM	#5 (permalink)
klx11491 1st Gear Member Join Date: Nov 2008 Location: Baton Rouge, Louisiana Posts: 136	Re: head porting (how to?) Check this link out from thumpertalk ----> How to Port Your Engine - ThumperTalk

07-21-2009, 01:00 PM	#8 (permalink)
50rider340 3rd Gear Member Join Date: Mar 2004 Location: CT Posts: 3,083 My Mood:	Re: head porting (how to?) i can see the needle files working well for a 2 stroke ports, but on a 4 stroke head you cant get the angles you would need to do a good port job. What is on thumper talk is more of a port clean up than an actual port job. What you need to get is a dimond grinder bit and a drill or a dremel works well to. This will take material off much faster. Like others have said your dont want to reem the crap out of it so its giant. On a stock head going a little bigger is ok but not to much as the valves are so tiny as it is. Some people cut the guides while others dont think thats safe. Its all opinion.

07-21-2009, 01:48 PM	#9 (permalink)
firepower354 Advertiser Join Date: Oct 2006 Location: Flint MI Posts: 11,002 My Mood:	Re: head porting (how to?) You gotta think like an air molecule __________________ If it has my name on it I did it;) FirepowerMinis.com Custom FPM parts and engines. Parts and service for all makes. Honda Trail Bikes parts and accessories. Pitster/Piranha/Thumpstar bikes, parts, engines and accessories.

07-21-2009, 01:59 PM	#12 (permalink)
Paxracing 3rd Gear Member Join Date: Mar 2004 Location: ca Posts: 5,518 My Mood:	Re: head porting (how to?) NO Trying to help you. but we port 5 -10 heads or cylinder a week.

07-21-2009, 02:05 PM	#13 (permalink)
firepower354 Advertiser Join Date: Oct 2006 Location: Flint MI Posts: 11,002 My Mood:	Re: head porting (how to?) Uncle Don's not just blowing smoke __________________ If it has my name on it I did it;) FirepowerMinis.com Custom FPM parts and engines. Parts and service for all makes. Honda Trail Bikes parts and accessories. Pitster/Piranha/Thumpstar bikes, parts, engines and accessories.

07-21-2009, 02:10 PM	#15 (permalink)
LongMooie 3rd Gear Member Join Date: Jun 2005 Location: originaly UK! now Central valley, Cali Posts: 1,114 My Mood:	Re: head porting (how to?) Im 32 and ive missed so much fun not smoking Screw the port job im off to the head shop for a pipe and pancake

07-21-2009, 02:13 PM	#16 (permalink)
LongMooie 3rd Gear Member Join Date: Jun 2005 Location: originaly UK! now Central valley, Cali Posts: 1,114 My Mood:	Re: head porting (how to?) YouTube - Shmoke and a Pancake

07-21-2009, 07:51 PM	#17 (permalink)
LongMooie 3rd Gear Member Join Date: Jun 2005 Location: originaly UK! now Central valley, Cali Posts: 1,114 My Mood:	Re: head porting (how to?) Well its too late to turn back ive been hard are work in the garage ***ing around with the ports on the 50 head, ive never done porting before so i dont expect it to be up to par and ive most likely taken too much out or not enough but i gave it ago. i still have to take the head to work and wash it out and blow it out with the air line comments welcome Last edited by LongMooie; 07-21-2009 at 08:35 PM.*

07-21-2009, 08:43 PM	#18 (permalink)
LongMooie 3rd Gear Member Join Date: Jun 2005 Location: originaly UK! now Central valley, Cali Posts: 1,114 My Mood:	Re: head porting (how to?)

07-21-2009, 08:44 PM	#19 (permalink)
LongMooie 3rd Gear Member Join Date: Jun 2005 Location: originaly UK! now Central valley, Cali Posts: 1,114 My Mood:	Re: head porting (how to?)

07-21-2009, 08:46 PM	#20 (permalink)
LongMooie 3rd Gear Member Join Date: Jun 2005 Location: originaly UK! now Central valley, Cali Posts: 1,114 My Mood:	Re: head porting (how to?)

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