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Old 10-07-2011, 05:44 PM   #1
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Default Some porting work we've been doing.

K Series in a DC: Cut Open, Fully Ported, Port Matched TB. Cams were installed too!











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Some porting work we've been doing.-img_6111.jpg  
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Old 10-07-2011, 05:44 PM   #2
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Some porting work we've been doing.-img_5728.jpg   Some porting work we've been doing.-img_5732.jpg   Some porting work we've been doing.-img_5551.jpg   Some porting work we've been doing.-img_5546.jpg   Some porting work we've been doing.-img_5699.jpg  

Some porting work we've been doing.-img_5562.jpg  
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Old 10-08-2011, 05:38 AM   #3
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dang dude look like you put in the time on that one
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Old 10-08-2011, 01:38 PM   #4
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looks awesome. did you record any flow bench numbers?
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Old 10-08-2011, 03:49 PM   #5
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Sadly the customer was in a rush to receive it so we didn't have time to flow this one. How ever we do plan on flowing a few of our other manifolds that we have ported and have in stock.
Our lead porter was very proud of this one, he didn't want to give it back to the customer. lol
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Old 10-09-2011, 01:35 PM   #6
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A+ for effort for sure. Good looking surface roughness in there. Uniform but slightly grainy. That should help with the atomization nicely.
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Old 10-10-2011, 01:32 AM   #7
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How much do you charge for porting a head or a manifold like the one above?

-Raj
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Old 10-10-2011, 12:14 PM   #8
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Originally Posted by lordrigamus View Post
A+ for effort for sure. Good looking surface roughness in there. Uniform but slightly grainy. That should help with the atomization nicely.
The turbulence in the airflow is more important post injector (the last path to the back of the valve), not a big chance of getting a layer of fuel in these runners.
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Old 10-10-2011, 02:28 PM   #9
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We'll have more information up as soon as we get our sponsor status figured out, dont want to step on anyone's toes!

Sam
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Old 10-10-2011, 04:13 PM   #10
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The turbulence in the airflow is more important post injector (the last path to the back of the valve), not a big chance of getting a layer of fuel in these runners.
This is true. I imagine it would help if the air passing the injector is slightly excited as well. Just not as much. Every little bit helps.
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Old 10-11-2011, 05:02 PM   #11
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We have four manifolds going out today for flow bench testing! 2 Stock, and 2 Ported counterparts! Numbers should be in soon!

-Sam
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Old 10-11-2011, 05:34 PM   #12
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Quote:
Originally Posted by lordrigamus View Post
A+ for effort for sure. Good looking surface roughness in there. Uniform but slightly grainy. That should help with the atomization nicely.
Atomization of what?
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Old 10-11-2011, 07:13 PM   #13
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Atomization of what?
What he said ^....

Unless the owner is planning on running 5th injector setup or water injection right after the TB the rough surface isnt needed.
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Old 10-13-2011, 09:59 PM   #14
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Well... depending on cam timing, valve overlap and whether it's batched fuel or not...fuel. Since the intake valve opens before the piston has reached TDC, There is a slight amount of reversion, Isn't there? Also, in a batched injection setup with multiple squirts, isn't there a possibility of drawing fuel in from adjacent runners? Granted, It's probably negligible with a manifold with longer runners.

I would think that airflow that's inherently unstable as it passes the injector would aid in atomization. It's just a thought, I could be wrong. I know it makes more of a difference post injector.

Last edited by lordrigamus; 10-13-2011 at 10:15 PM.
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Old 10-13-2011, 10:49 PM   #15
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hey did you get my pm?
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Old 10-13-2011, 10:52 PM   #16
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After thinking about it a bit, I guess the scavenging effect of the exhaust pulse would tend to negate the reversion theory, wouldn't it. Anything above an idle rpm would probably keep everything flowing in the right direction anyway.

Forget I said anything. Still nice work though.
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Old 10-19-2011, 05:33 PM   #17
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well guys we have some free time lets get some of these miata intake manifolds in for some port work!
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Old 10-19-2011, 06:06 PM   #18
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Sounds great! We have a few on the way now, testing and numbers will come soon enough!

-Sam
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