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Old 02-10-2013, 01:43 AM   #26
ammfab
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Quote:
Originally Posted by subi400 View Post
The picture of the srt 4 ports in that head are crazy... Nice job with the finished product.

So, what specifically surprised you about the current heads you are working on? Any particular reason for not sharing some of your other tools?

thank u sir, those are from 7 years ago too. those were ahead of my abilities back then i think i got lucky or something with that head, i was so proud of it lol. as for these heads..... nothing really surprised me. the dog leg is a real pita to get in and get everything, well compared to most other heads out there and the intakes are so easy to get in and rework.

certain aspects of my porting and the same with my welding (mainly aesthetics) i keep to myself as its taken me 8 years to get to the level im at now and i learned on my own with trial and error over that span of time with no help. i also do this as a side gig so to just go out and tell everyone how to do it doesnt make sense. its all basic stuff i use for the porting.... carbides and cartridge rolls...... its the tooling and technique for the finish on the ports is what i keep proprietary.

its not only the tooling.... theres lots of patience to be had doing this, theres 20 hours in these 2 heads lone and thats without messing with the combo chambers. throw in another 5-8 hours for those.


mike
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Last edited by ammfab; 02-10-2013 at 01:49 AM.
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Old 02-10-2013, 02:04 AM   #27
subi400
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Quote:
Originally Posted by Flat 4 Motorsport View Post
The double cut burrs are typically for ferrous applications, not saying you cant use them though. I buy most of my carbide burr porting tools through Buckeye Carbide They are by far some of the best quality I have used and their pricing is great!

and sanding mandrels from MSC or KBC tools.

I bought my Makita off fleabay, they're expensive so you just have to be patient and catch someone not paying attn.

I got a single speed and bought a router speed controller, dont be ghetto and use a dimmer switch.

My favorite burr is the middle one with the real tight spiral flutes, it's doesnt chew through the material as aggressively so once you get a good amount of material removed I 'll swith to that to start smoothing and go the the sanding mandrels.

Don't even bother with 40 grit, 60-80 on the intake side. you dont want it to be (mirror) smooth, and if you want to make it pretty on the exhaust side a 120 but no more than that IMO.

Goodluck
I was just looking at the Buckeye Carbide site and their prices are good!! Now I know the difference between a double and single cut bur. Going to pick up a couple single cut burs here shortly. The egg shaped 1/4 shank, 3/8 dia cutting, 5/8 cutting length at 6 5/8 shank length and the same one but in a 2 3/8 length. Going to look at a few others as well. Thanks for the info!!

Ok, back to thread topic..
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Old 02-10-2013, 02:09 AM   #28
FuJi K
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Quote:
Originally Posted by ammfab

but uve taken some usdm heads like ive got pictures of up above (the b25 cast) and have trimmed the divider back to make it similar to the jdm big ports correct.... thats kind of what i was asking.

and ur saying the jdm big ports are that deign (similar to a honda b16) from the factory correct?

mike
That's correct.

This thread got secrets
http://forums.nasioc.com/forums/showthread.php?t=903873
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Old 02-10-2013, 02:16 AM   #29
subi400
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Quote:
Originally Posted by ammfab View Post
thank u sir, those are from 7 years ago too. those were ahead of my abilities back then i think i got lucky or something with that head, i was so proud of it lol. as for these heads..... nothing really surprised me. the dog leg is a real pita to get in and get everything, well compared to most other heads out there and the intakes are so easy to get in and rework.

certain aspects of my porting and the same with my welding (mainly aesthetics) i keep to myself as its taken me 8 years to get to the level im at now and i learned on my own with trial and error over that span of time with no help. i also do this as a side gig so to just go out and tell everyone how to do it doesnt make sense. its all basic stuff i use for the porting.... carbides and cartridge rolls...... its the tooling and technique for the finish on the ports is what i keep proprietary.

its not only the tooling.... theres lots of patience to be had doing this, theres 20 hours in these 2 heads lone and thats without messing with the combo chambers. throw in another 5-8 hours for those.


mike
Patience does work...lol Understandable about your experience and some of your trade secrets I have like 7 hours in mine, but I only touched a few areas though not every part. Porting the combustion chamber should be fun for me... These intake ports on these subaru's are pretty easy, but I agree the dog leg is a kinky pain in the rear
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Old 02-10-2013, 02:48 AM   #30
ammfab
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ok its 1am and heres 2 quick pics of an intake and a straight exhaust port. ill take good pics and start the other thread tomorrow.





fuji are u razzing me with the "secrets" comment?



mike

Last edited by ammfab; 02-10-2013 at 03:35 AM.
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Old 02-10-2013, 10:09 AM   #31
FuJi K
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MY99 GF4 JDM 6spd
NF Performance

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No razzing. The thread i linked you shows different port styles that Subaru uses. The big ports that resemble the B16 Ports can be found in there. If i didn't post that thread, guys who knew what cars had what heads would keep to themselves. Secrets!
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Old 02-10-2013, 10:10 AM   #32
gotsugg
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Quote:
Originally Posted by Flat 4 Motorsport View Post
Those look great! how much time do you have in those?

We generally do a four hour job unless the customer wants to pay more.

Those D25's have about 3.5hrs of time into them, those were a personal set that I ended up selling.

-Phil
Thanks Phil. Those are the one and only set of heads I've ever ported. I have countless hours in them but truly had a blast. I need to post some better pictures.... I smoothed out the combustion chambers like Mike mentioned.

Brian

Quote:
Originally Posted by ammfab View Post
ok one head is done, now i need to finish the last stage on head #2. i think im gonna start a new thread when i post the finished pics cause these things deserve a dedicated thread as they turned out way better then i initially expected them to

mike
Just add finished pictures to your first and second post. BTW, love the finish
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