What do you think about this B16A2 manifold!
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From: Canada
Re: (AllmotorEH2)
those ridges to direct airflow will actually hinder some performance... because air needs to have a curve to follow, similar to a velocity stack for best entrance inside a runner...
best to do a Before and After run on a dyno...
theoritically it should help, but reality... i'm not certain but i would think against it....
full radius entries are the most important part of a good manifold....
i finsihed one the other day on a P73 for reference....
the taper and size of the runners are as important as the radius entry.
dyno it and let us know.. maybe it does work.. who knows?
best to do a Before and After run on a dyno...
theoritically it should help, but reality... i'm not certain but i would think against it....
full radius entries are the most important part of a good manifold....
i finsihed one the other day on a P73 for reference....
the taper and size of the runners are as important as the radius entry.
dyno it and let us know.. maybe it does work.. who knows?
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From: Riga, Latvia, Baltic State.
Re: (HotWheelz)
I'm absolutely agree with you. But it wouldn't be interesting to do as anybody did it previous.
Well, there are some opinion about those ribs.
Have the identical b16 stock manifold on engine(B20Z/B16A2) and I have the dyno numbers. It's allready tuned with nice target lamda.
The manifold will be installed next week. And I will go to dyno again.
Well, there are some opinion about those ribs.
Have the identical b16 stock manifold on engine(B20Z/B16A2) and I have the dyno numbers. It's allready tuned with nice target lamda.
The manifold will be installed next week. And I will go to dyno again.
Who is Mr Robot?
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From: ATL - Where the Pimps and Players dwell
Re: (Root79)
the problem youre gonna find is that ridge on cyl#4 (closest to the t) is going to recieve most of the available airflow due to that ridge
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Re: (d-swap)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by d-swap »</TD></TR><TR><TD CLASS="quote">i wanna see the dyno chart of a stock b16 with a bored intank manifold....</TD></TR></TABLE>
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From: Riga, Latvia, Baltic State.
Re: (RACEPAK)
Finish today the manifold and install it. First impression, seems like need more fuel. Another think, the sound from muffler become quieter.
Modified by Root79 at 11:47 PM 1/16/2006
Modified by Root79 at 11:47 PM 1/16/2006
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From: NY/Boston, USA
Re: (wantboost)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wantboost »</TD></TR><TR><TD CLASS="quote">the problem youre gonna find is that ridge on cyl#4 (closest to the t) is going to recieve most of the available airflow due to that ridge</TD></TR></TABLE>
Do you think that if the ridges were stepped, with the #4 cylinder being the "lowest" and the rest progressively getting taller, it would work better?
Do you think that if the ridges were stepped, with the #4 cylinder being the "lowest" and the rest progressively getting taller, it would work better?
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From: Riga, Latvia, Baltic State.
Re: (tommymoose)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tommymoose »</TD></TR><TR><TD CLASS="quote">Do you think that if the ridges were stepped, with the #4 cylinder being the "lowest" and the rest progressively getting taller, it would work better?</TD></TR></TABLE>
Must work. Will see on dyno.
Must work. Will see on dyno.
Who is Mr Robot?
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Re: (tommymoose)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tommymoose »</TD></TR><TR><TD CLASS="quote">Do you think that if the ridges were stepped, with the #4 cylinder being the "lowest" and the rest progressively getting taller, it would work better?</TD></TR></TABLE>
probably, that way some air still makes it to #1
probably, that way some air still makes it to #1
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From: high point, nc, usa
Re: (~RTErnie~)
I dont think that a flowbench would help too much in this situation. It would be different if you could hook every runner up at once to see the difference in cfm between each one...but i dont believe you can do this on a superflow.
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Re: (beepy)
I actually found a really good article on building your own flowbench a while back. I was planning on doing it but my computer crashed and i lost the link. Now i cant find that article ANYWHERE! If anyone has a link to a home made flowbench then id greatly appreciate it.
BTW-This would never be as acurate as a superflow...but as beepy said it would be good for balancing out ports.
BTW-This would never be as acurate as a superflow...but as beepy said it would be good for balancing out ports.
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From: Pearl City, HI, USA
Re: (sCeRaXn)
You could go low-tech or high-tech.
Low-tech: Plastic tubes that gradually get larger, preferably clear plastic. Float table tennis ***** in the tubes and graduate them every inch or so. Apply vaccum, attach tubes to runners via hose (making sure they have equal length and bending), and if the runners are balanced the ***** will float at the same level.
High-tech: Scrounge 4 or more hot-wire MAF sensors out of a junkyard, making sure they are all the same make. Attach sensors inline with large hoses to the ports, and again apply vaccum. This method would also require a control circuit, but could be used to get precise measurements if calibrated correctly.
Best method? Make "runners" that can be attached to the intake manifold, combustion chamber, etc, and make sure they are all the same. Install pitot tube air speed meters into each runner, and calculate flow based on CSA and velocity. Again, attach vacuum source.
Low-tech: Plastic tubes that gradually get larger, preferably clear plastic. Float table tennis ***** in the tubes and graduate them every inch or so. Apply vaccum, attach tubes to runners via hose (making sure they have equal length and bending), and if the runners are balanced the ***** will float at the same level.
High-tech: Scrounge 4 or more hot-wire MAF sensors out of a junkyard, making sure they are all the same make. Attach sensors inline with large hoses to the ports, and again apply vaccum. This method would also require a control circuit, but could be used to get precise measurements if calibrated correctly.
Best method? Make "runners" that can be attached to the intake manifold, combustion chamber, etc, and make sure they are all the same. Install pitot tube air speed meters into each runner, and calculate flow based on CSA and velocity. Again, attach vacuum source.
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From: east tri state, us
Re: (essex)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by essex »</TD></TR><TR><TD CLASS="quote"> 
http://www.tractorsport.com/cg...d.cgi </TD></TR></TABLE>
sick i can get brand new vw mass air meters for $49 each brand new ill be build one of these soon enuf
how much does a real flow bench cost?
http://www.tractorsport.com/cg...d.cgi </TD></TR></TABLE>
sick i can get brand new vw mass air meters for $49 each brand new ill be build one of these soon enuf
how much does a real flow bench cost?
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