B16 Head - Flow numbers after CNC portwork
11-09-2007, 09:37 AM
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B16 Head - Flow numbers after CNC portwork
w/stock size valves
@ .450" Intake 285 Exhaust 225
and 300cfm at .500"
No pipe on the Exhaust -
@ 28"
Are these good numbers?
@ .450" Intake 285 Exhaust 225
and 300cfm at .500"
No pipe on the Exhaust -
@ 28"
Are these good numbers?
11-09-2007, 10:34 AM
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Re: B16 Head - Flow numbers after CNC portwork (Honda_Fanatic)
i didn't get what you mean...
are you saying you got 300 cfm's @ 0.500 of lift???
is it even possable... can you provide a flow chart?
are you saying you got 300 cfm's @ 0.500 of lift???
is it even possable... can you provide a flow chart?
11-09-2007, 10:47 AM
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Re: B16 Head - Flow numbers after CNC portwork (overrev_it)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by overrev_it »</TD></TR><TR><TD CLASS="quote">i didn't get what you mean...
are you saying you got 300 cfm's @ 0.500 of lift???
is it even possable... can you provide a flow chart?</TD></TR></TABLE>
These are numbers given to me by CNCPort.com
They said that at at .450 lift intake was 285 and exhaust was 225
and at a .500 lift the intake would be 300cfm
are you saying you got 300 cfm's @ 0.500 of lift???
is it even possable... can you provide a flow chart?</TD></TR></TABLE>
These are numbers given to me by CNCPort.com
They said that at at .450 lift intake was 285 and exhaust was 225
and at a .500 lift the intake would be 300cfm
11-09-2007, 11:05 AM
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Re: B16 Head - Flow numbers after CNC portwork (Honda_Fanatic)
im sure combustion contraption will chime in and shed some light but i think 300cfm is a little much for cnc,maybe possible by hand if brad or someone does it
11-09-2007, 03:49 PM
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Re: B16 Head - Flow numbers after CNC portwork (DA_JDM)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DA_JDM »</TD></TR><TR><TD CLASS="quote">a 300cfm B serie head is good for 240whp+...how much power your set-up is producing???</TD></TR></TABLE>
Who did your math. What cam, compression, and stroke you get that with?
Who did your math. What cam, compression, and stroke you get that with?
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11-09-2007, 07:07 PM
#8
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I think he means 300cfm can support 240hp. 300cfm can in truth support more than 240hp, but thats what i think he was getting at.
Anyway, those are indeed fantastic numbers. But like dyno's , flowbenches read differently. Depending on who designed the original port , id say it could be done, especially if with extra thin _________.
Anyway, those are indeed fantastic numbers. But like dyno's , flowbenches read differently. Depending on who designed the original port , id say it could be done, especially if with extra thin _________.
11-09-2007, 07:25 PM
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Re: (I smell secretions)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by I smell secretions »</TD></TR><TR><TD CLASS="quote">i know the answer....extra thin camshafts.....right?</TD></TR></TABLE>
11-09-2007, 07:32 PM
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Re: (Honda_Fanatic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Honda_Fanatic »</TD></TR><TR><TD CLASS="quote">Really? So that is in a sence cheating! Cause once you install a normal sized cam your loosin CFM off the bat!!</TD></TR></TABLE>
11-12-2007, 07:37 AM
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Re: (Honda_Fanatic)
Wow im shocked to think someone would think that you can make a thin camshaft. Combustion stop playing with the children before someone calls up skunk and ask for thinner cam shafts to get 240 plus to the wheels. Its not good to cry wolf to many times.
11-12-2007, 07:51 AM
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Re: (Honda_Fanatic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Honda_Fanatic »</TD></TR><TR><TD CLASS="quote">
I hope you are joking!</TD></TR></TABLE>
Ok call up a shop and ask for thin cams and see there response. Unless im reading to far into it.
I hope you are joking!</TD></TR></TABLE>
Ok call up a shop and ask for thin cams and see there response. Unless im reading to far into it.
11-12-2007, 08:19 AM
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Re: B16 Head - Flow numbers after CNC portwork (Honda_Fanatic)
if the head really does those numbers at 28" with std valves, on a legit bore adapter, with a spark plug installed and no leakage, then yes they are pretty good numbers for a Bseries head.
but does the head really flow that??
what are they trying to sell??
would you do whatever you could to make the numbers as big as possible??
but does the head really flow that??
what are they trying to sell??
would you do whatever you could to make the numbers as big as possible??
11-12-2007, 08:33 AM
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Re: B16 Head - Flow numbers after CNC portwork (lohatch)
Well I would say they are trying to sell there porting servise. I am gonna give them a shot and see what they can do. I will try and have it flow tested after I get it back, but I will definatelly have it dyno tested when my engine is complete.
11-14-2007, 08:26 PM
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what were some people talking about cams for? on a flow bench you dont use the cam. you just use a dial indicator type thing that pushes the valves down that much. you could go as far as the spring your using would let. that just shows what the bare head would flow. no cams no manifold just the head itself. like lohatch said, if it wasnt leaking than those are definately good numbers. but then you factor in your manifold and crap and thats going to cut that number down a bit once its on your engine.
11-14-2007, 08:59 PM
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Re: (b16a95eg)
Someone was being a smartass and I replied with sarcasm - and it got taken seriously! Some people? LOL! Anyway - I am gonna give CNCPort a shot - c what they can do for me!
11-14-2007, 10:20 PM
#22
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Re: B16 Head - Flow numbers after CNC portwork (lohatch)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lohatch »</TD></TR><TR><TD CLASS="quote">would you do whatever you could to make the numbers as big as possible??</TD></TR></TABLE>
I'd like to see the OP answer this question.
I'd like to see the OP answer this question.
11-14-2007, 10:30 PM
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Re: B16 Head - Flow numbers after CNC portwork (Combustion Contraption)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption »</TD></TR><TR><TD CLASS="quote">
I'd like to see the OP answer this question.</TD></TR></TABLE>
That depends on if the methods are honest! If I was a port + polish guy - I certainly would do the best I could to make all my heads flow as good as possible (making a good name gets you business).
If I was somehow manipulating the numbers I would eventually get caught and there would go my good name and my livelyhood!
I'd like to see the OP answer this question.</TD></TR></TABLE>
That depends on if the methods are honest! If I was a port + polish guy - I certainly would do the best I could to make all my heads flow as good as possible (making a good name gets you business).
If I was somehow manipulating the numbers I would eventually get caught and there would go my good name and my livelyhood!
11-14-2007, 10:32 PM
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Re: B16 Head - Flow numbers after CNC portwork (Honda_Fanatic)
Im not talking about for a marketing standpoint. Im asking if you believe that the head with the highest CFM # will make the most power.
11-14-2007, 10:35 PM
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Re: B16 Head - Flow numbers after CNC portwork (Combustion Contraption)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption »</TD></TR><TR><TD CLASS="quote">Im not talking about for a marketing standpoint. Im asking if you believe that the head with the highest CFM # will make the most power.</TD></TR></TABLE>
Absolutely not! Just like with HP and TQ and Final Drives/tranny gearing!
I am a firm believer in the fact that its a matter of the right combination of everything!
I know very little of P+P work - but I do believe that the higher CFM will give you the potential for higher power.
Absolutely not! Just like with HP and TQ and Final Drives/tranny gearing!
I am a firm believer in the fact that its a matter of the right combination of everything!
I know very little of P+P work - but I do believe that the higher CFM will give you the potential for higher power.