Updated: Home Ported Heads Information Page
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From: Mannheim, Germany
Updated: Home Ported Heads Information Page My site was down for a month or so since it was totally screwed up.
I put the heads page back up and added some more info.
It still needs some polishing but it's getting there. Let me know if it's helpful or if you have anything to add.
http://shinken.us/DIY_heads
I gave some credits. If you see a pic of yours, let me know and I'll make you famous
I put the heads page back up and added some more info.
It still needs some polishing but it's getting there. Let me know if it's helpful or if you have anything to add.
http://shinken.us/DIY_heads
I gave some credits. If you see a pic of yours, let me know and I'll make you famous
Thread Starter
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Joined: Jul 2002
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From: Mannheim, Germany
Originally Posted by vanilla89
not to bust you'r bubble but you didn't do a lot
I didn't do a lot of porting or I didn't do a lot for the page?
Either way, what can I do better? Can you show me an example of something you've done for inspiration?
Thanks.
I'm not gonna have them flow tested since the test is so subjective and I believe deep down that the ports are as even as they are going to be.
Originally Posted by kenkaru
Please, bust my bubble and elaborate.
I didn't do a lot of porting or I didn't do a lot for the page?
Either way, what can I do better? Can you show me an example of something you've done for inspiration?
Thanks.
I'm not gonna have them flow tested since the test is so subjective and I believe deep down that the ports are as even as they are going to be.
I didn't do a lot of porting or I didn't do a lot for the page?
Either way, what can I do better? Can you show me an example of something you've done for inspiration?
Thanks.
I'm not gonna have them flow tested since the test is so subjective and I believe deep down that the ports are as even as they are going to be.
Thread Starter
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Joined: Jul 2002
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From: Mannheim, Germany
Thanks GuitsBoy. You were/are a great help to me in my DIY heads project.
I got some graduated cylinders and I still need to cc the ports,
then I'll bug you some more about DCR
If I understand any of it, I'll put some DCR info on the page too.
I got some graduated cylinders and I still need to cc the ports,
then I'll bug you some more about DCR
If I understand any of it, I'll put some DCR info on the page too. Trending Topics
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You aren't done with those heads are you??? Seems like a lot of chewed up areas with "chatter" marks like you didn't use non-ferous bits. 
Also, is there not enough material to bring the "long side" radius on the exhaust port to a point prior to the guide? That's usually the shape I've seen on SBC-I heads (and have copied on my other heads on SBC Fords too) and want to understand why your's aren't shaped that way...
Also, did you have any templates made to match each port to one another? That's the "old school" method of reproducing a port from one to another, back before CNC came around. You could take a template from a CNC ported head as your base, and combined with your cutaways, come to a conclusion of what you could accomplish with hand porting without getting to close to water jackets/etc.
Also, is there not enough material to bring the "long side" radius on the exhaust port to a point prior to the guide? That's usually the shape I've seen on SBC-I heads (and have copied on my other heads on SBC Fords too) and want to understand why your's aren't shaped that way...Also, did you have any templates made to match each port to one another? That's the "old school" method of reproducing a port from one to another, back before CNC came around. You could take a template from a CNC ported head as your base, and combined with your cutaways, come to a conclusion of what you could accomplish with hand porting without getting to close to water jackets/etc.
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From: Mannheim, Germany
I don't see the chatter marks in the pics. I'm not being defensive or anything I just don't see them.
The three collages at the top of the page are a compilation of the best pictures I could find that showed attainable results. They are not pictures of the heads I ported myself. I could take pics and post them and maybe I will but I think it's sort of a waste of time since they are going to look very similar to what is already shown. (and it's a pain the *** to get the camera to focus and not glare etc)
There are 5 pics of exhaust ports. I believe one of them features the pointy guide effect your mentioning.
There was some talk about templates a little over a year ago but, to my knowledge, no on has made any. I used some calipers and my sense of touch to match the ports. I'm fairly artistic and I think they're very close. On the few areas where you remove a significant amount of material, I think it's pertty easy to match the ports so you don't really need templates.
Maybe I should add to the site that it's not all about "how much material you can remove." The goal is to make them flow better, not make them lighter. Bo White actually flowed a few sets he ported. Much of the info I put up came from him.
The DIY head topic has done it's rounds a few times and verdict from the pros/semipros is unless you're going to do R&D with a flow bench, your best bet is to clean them up rather than F**K them up.
If anyone knows who posted the crosscut pics, I'd like to give him credit since a crap load of people have and will benefit from his sharing.
The three collages at the top of the page are a compilation of the best pictures I could find that showed attainable results. They are not pictures of the heads I ported myself. I could take pics and post them and maybe I will but I think it's sort of a waste of time since they are going to look very similar to what is already shown. (and it's a pain the *** to get the camera to focus and not glare etc)
There are 5 pics of exhaust ports. I believe one of them features the pointy guide effect your mentioning.
There was some talk about templates a little over a year ago but, to my knowledge, no on has made any. I used some calipers and my sense of touch to match the ports. I'm fairly artistic and I think they're very close. On the few areas where you remove a significant amount of material, I think it's pertty easy to match the ports so you don't really need templates.
Maybe I should add to the site that it's not all about "how much material you can remove." The goal is to make them flow better, not make them lighter. Bo White actually flowed a few sets he ported. Much of the info I put up came from him.
The DIY head topic has done it's rounds a few times and verdict from the pros/semipros is unless you're going to do R&D with a flow bench, your best bet is to clean them up rather than F**K them up.
If anyone knows who posted the crosscut pics, I'd like to give him credit since a crap load of people have and will benefit from his sharing.
NOT! 
Originally Posted by kenkaru
I don't see the chatter marks in the pics. I'm not being defensive or anything I just don't see them.
The three collages at the top of the page are a compilation of the best pictures I could find that showed attainable results. They are not pictures of the heads I ported myself.
The three collages at the top of the page are a compilation of the best pictures I could find that showed attainable results. They are not pictures of the heads I ported myself.
Originally Posted by kenkaru
My site was down for a month or so since it was totally screwed up.
I put the heads page back up and added some more info.
It still needs some polishing but it's getting there. Let me know if it's helpful or if you have anything to add.
http://shinken.us/DIY_heads
I gave some credits. If you see a pic of yours, let me know and I'll make you famous
I put the heads page back up and added some more info.
It still needs some polishing but it's getting there. Let me know if it's helpful or if you have anything to add.
http://shinken.us/DIY_heads
I gave some credits. If you see a pic of yours, let me know and I'll make you famous
Those headlights are great. We should've been born with one of those
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From: Mannheim, Germany
I'll bet the chatter marks are there because the porter didn't have any sanding drums that fit in there.
The headlamp worked out extremely well. I always had light exactly where I needed it. I now use it every time I work outside. We really should be born with them!
The headlamp worked out extremely well. I always had light exactly where I needed it. I now use it every time I work outside. We really should be born with them!
The exhaust cutaway in your collection is not originally mine but I put the red lines in to use as a guide for porting. I have respect for anyone thats willing to do porting themselves, everyone that does it as a hobby or a living started somewere 
Originally Posted by Bo White
The exhaust cutaway in your collection is not originally mine but I put the red lines in to use as a guide for porting. I have respect for anyone thats willing to do porting themselves, everyone that does it as a hobby or a living started somewere
Originally Posted by GuitsBoy
I dont think he knows as much as he thinks he does.
Originally Posted by domination
Dude, those arent chatter marks. I suggest you got get an aluma bur, and try doing some heads yourself. I'm sure you'll soon see what real chatter marks look like then
Chatter marks can look much worse than those, but those are indeed chatter marks. I've done about 10 different sets of aluminum and iron V8 heads, and probably 100+ sets of 2 cycle cylinders/ports, so I do know what finish to expect when the project is done right. I've been racing and modifying related parts in some form or another since I was 5 years old (nearly 30 years), so I do know what I am talking about here.