bro there is sooo many guys who don't do it for a living but tell us how to do it and what we did wrong on these comments. When they could be asking questions or learning they are standing on a soap box telling you off lmao
Great Job Dave. I like your approach on a head like this. The people out there trying to install a bigger valve in a stock seat like these does not work. Not enough seat margin. Thanks for sharing. Take care, Ed.
Excellent showings Dave, thanks man! Its really interesting you cover this on these heads. Would love for hpd and 4 pistons to chime in too with all their R&D knowledge through the years seeing what works best for this kind of design, its pretty intricate and unique, some things need to stay secret i guess. Not many cylinder heads have a common exhaust port outlet like this
The "SHORT TURN" with a dry port and 4 valves per cylinder will work better as a "flow over" and flatten the short turn since there is no fuel to turn. The intake pressure and overlap will force air around the valve to 10 degree after TDC and them separate and flow over the short side and (air pressure to speed) straight into bore slamming into the cylinder wall and swirl. The air is pushed and wants to flow to the center of the bore. After all that, the fuel is injected. (living engine)
Thanks for the comment about over sized valves I see this often but in my thoughts especially with already shrouded valves Ford modular cylinder heads with 3.5-3.7 bores it seems better to do other things. Like unshroud the stock sized valve to increase flow and hit the other variables to compound the improvements.
I have a set of 2KR Cobra heads which are the precursor to the 05-06 ford Gt super car heads that I need ported. Been scared to send them other places due to no one having a CNC file because of the low availability of them. Also I have the original intake. I know you can do the heads but could you also port match the intake manifold also for me?@@headgames
Another awesome video! 👍 I’d love to see how you flow test the head. Do you do a before and after port job flow test? Or, do you keep porting and flow testing until you get the specific flow numbers you’re looking for? Also, do you flow test to make sure the head is matched between cylinders? I’m coming from the motocross/dirtbike world but it’s still really cool to see how car guys do it too! Keep up the great work. Cheers! 🤙
Excellent video matte! Right now I am looking for a rotary tool mainly the use that I am going to give it is clean rust surfaces and porting car cylinder heads at hobby level at home, opening ducts etc I was going to take dremel 4000 or air die Grinder but my compressor is 12 gallon 3 bhp and doesn't hold up to the job, a friend told me that for the job I want, it has revs but not so much power and it ends up burning, it's better to use a drill or electric grinder tool for that type of job, would you recommend this makita or Any other? The carbides I use to remove metal are 6mm or there would be a lack of power. Regards😊😊
Excellent porting! Ugly head though. Cast exhaust manifold? Can gains be made with that? I'm sure you made gains porting but is that cast manifold a choke point?
110hp with porting has been advertised on a 670whp motor. Engine made that power at 33psi before porting - made same power at 24psi after porting. At 33psi it made 110hp more. Just got my head ported by a reputable engine builder who specializes in these motors. Hoping for gains of 60 to 80whp on my 566whp setup. Would be happy for anything above 600whp - 620+ would be solid gold on the tiny turbo I'm using 😂 stock cam shafts and stock bottom end. 8000rpm rev limit - should see results next week after new headgasket is broken in.
we do 2 valve heads as well, and try to not go above 90%. And that 91 number is not a flat across the board, works on every head. Some heads we can't touch the throat on the valve job because it will lose. This is an area if you are to small, you know it. Too big, everyone will know it.
@@V8Lenny the tumble can't be taken out of the port. It is how it is designed. And it is boosted, so don't think tumble is a problem. I would think there is other issues there. The part they choke up is for cold start emissions.
No one can say you're doing anything wrong....you guys are a top cylinder head shop 👍
bro there is sooo many guys who don't do it for a living but tell us how to do it and what we did wrong on these comments. When they could be asking questions or learning they are standing on a soap box telling you off lmao
Great channel. Learning so much. Love the tech.
Thanks for watching! Happy to hear you are getting something out of it!
More technical videos like this please! Love your work!
Thanks Michael!
Great Job Dave.
I like your approach on a head like this.
The people out there trying to install a bigger valve in a stock seat like these does not work.
Not enough seat margin.
Thanks for sharing.
Take care, Ed.
thanks Ed!
As always great content from a top tier industry leader!
Thanks for the kind words!
Awesome clear simple explanations... Thank you
Thanks for watching!
Awesome tech information. Keep up the good work.
thanks Jose!
Excellent showings Dave, thanks man! Its really interesting you cover this on these heads. Would love for hpd and 4 pistons to chime in too with all their R&D knowledge through the years seeing what works best for this kind of design, its pretty intricate and unique, some things need to stay secret i guess. Not many cylinder heads have a common exhaust port outlet like this
Most people don't share the R&D. We will share some but not all as well.
The "SHORT TURN" with a dry port and 4 valves per cylinder will work better as a "flow over" and flatten the short turn since there is no fuel to turn. The intake pressure and overlap will force air around the valve to 10 degree after TDC and them separate and flow over the short side and (air pressure to speed) straight into bore slamming into the cylinder wall and swirl. The air is pushed and wants to flow to the center of the bore. After all that, the fuel is injected. (living engine)
I would love to see some of the finishing techniques/tools/materials
Thanks for the comment about over sized valves I see this often but in my thoughts especially with already shrouded valves Ford modular cylinder heads with 3.5-3.7 bores it seems better to do other things. Like unshroud the stock sized valve to increase flow and hit the other variables to compound the improvements.
Yes!
I have a set of 2KR Cobra heads which are the precursor to the 05-06 ford Gt super car heads that I need ported. Been scared to send them other places due to no one having a CNC file because of the low availability of them. Also I have the original intake. I know you can do the heads but could you also port match the intake manifold also for me?@@headgames
Another awesome video! 👍 I’d love to see how you flow test the head. Do you do a before and after port job flow test? Or, do you keep porting and flow testing until you get the specific flow numbers you’re looking for? Also, do you flow test to make sure the head is matched between cylinders?
I’m coming from the motocross/dirtbike world but it’s still really cool to see how car guys do it too! Keep up the great work. Cheers! 🤙
Great camera angles. I have seen some talented porters not able to capture the shots for the how to instructions
Thanks for the kind words!
Thanks for sharing
Nice to see some 4 valve porting :)
thanks!
Excellent video matte! Right now I am looking for a rotary tool mainly the use that I am going to give it is clean rust surfaces and porting car cylinder heads at hobby level at home, opening ducts etc I was going to take dremel 4000 or air die Grinder but my compressor is 12 gallon 3 bhp and doesn't hold up to the job, a friend told me that for the job I want, it has revs but not so much power and it ends up burning, it's better to use a drill or electric grinder tool for that type of job, would you recommend this makita or Any other? The carbides I use to remove metal are 6mm or there would be a lack of power. Regards😊😊
Wow wow wow
Pretty cool, This is the first k20c1 head I hear of getting ported. What’s the power goals on it?
I think some people have done them, and I believe there is a company who has a CNC program for it. 500whp is the goal.
@@headgames HELLO ALWAYS WITH THE ORIGINAL TURBO
All the Burrs are out of stock, except the 3/8 double cut for blending.
When will the rest of the single cuts be back in stock? :D
after the new year. Been hard to get back in!
I would love to know where you got the speedcontrol.
it is from Goodson. goodson.com/products/variable-speed-controller?variant=39642338197566
Or Harbor Freight.
Excellent porting! Ugly head though. Cast exhaust manifold? Can gains be made with that? I'm sure you made gains porting but is that cast manifold a choke point?
110hp with porting has been advertised on a 670whp motor.
Engine made that power at 33psi before porting - made same power at 24psi after porting. At 33psi it made 110hp more.
Just got my head ported by a reputable engine builder who specializes in these motors. Hoping for gains of 60 to 80whp on my 566whp setup. Would be happy for anything above 600whp - 620+ would be solid gold on the tiny turbo I'm using 😂 stock cam shafts and stock bottom end. 8000rpm rev limit - should see results next week after new headgasket is broken in.
I'm new to this and I'm in the process of restoring a 30year motorbike, I'm guessing the same rules apply?
same rules apply to any head on the planet really
@HeadGames Motorworks I've just been smoothing rather than taking anything away, getting rid of moulding marks and smoothing ect
@@andrewrobinson4175 total waste of time unless you are moving material. Nobody sells the best "polished" head. Because you have to actually port it.
🇦🇬
⭐️⭐️⭐️⭐️. 3SGTE next.
🙇🏾♂️
maybe next time we do one. That is a rare bird here.
The two valve head porters go to 91 percent, is there a reason to stay at 85 percent?
we do 2 valve heads as well, and try to not go above 90%. And that 91 number is not a flat across the board, works on every head. Some heads we can't touch the throat on the valve job because it will lose. This is an area if you are to small, you know it. Too big, everyone will know it.
What happened to porting the exhaust port?
we only did the bowls not porting the exhaust port
Love when people want to put the biggest valve they've heard of in the head..
it's most people and shops. We are working off our experience and that crap doesn't work.
Wasnt this the head you lose 40 hp if doing like this if still using direct injection ?
I have never heard of such a thing
@@headgames it was 50 hp. Double the flow, lose 50hp because no swirl/tumble.
@@V8Lenny guess we will find out!
@@V8Lenny the tumble can't be taken out of the port. It is how it is designed. And it is boosted, so don't think tumble is a problem. I would think there is other issues there. The part they choke up is for cold start emissions.
@@headgames boosted or not, doesnt change anything., If it is direct injected, it works almost like diesel. Someone has already tested. Maybe 4P
Talk ‘bout polishing a turd…
Can you do a down and dirty k20a port job for poor Hondas where they would pick up hp but without getting too into the weeds.
It probably doesn't need one unless it is a fully build engine. I could be wrong, but there is not much available for the K20a