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Dartanian
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1978 posts [98%]
Fort Collins
9-16-2005
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| « Re: The END ALL flow chart comparison between p72 and pr3 heads (dohcMONSTER) | « » 8:48 PM 9/29/2006 |
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I already posted that in this thread: http://www.honda-tech.com/zero...age=2It is good information, though.
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dohcMONSTER
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6085 posts [99%]
feed us
10-29-2003
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| « Re: The END ALL flow chart comparison between p72 and pr3 heads (Dartanian) | « » 8:50 PM 9/29/2006 |
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haha well now people can see the difference between the 2 without having to search that hard 
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Dartanian
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1978 posts [98%]
Fort Collins
9-16-2005
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| « Re: The END ALL flow chart comparison between p72 and pr3 heads (dohcMONSTER) | « » 8:50 PM 9/29/2006 |
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| Quote, originally posted by dohcMONSTER » | | haha well now people can see the difference between the 2 without having to search that hard |
I sure hope so. If I hear someone say the B16 head is better than the GSR head one more time, I think I am going to scream.
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dohcMONSTER
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6085 posts [99%]
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10-29-2003
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| « Re: The END ALL flow chart comparison between p72 and pr3 heads (Dartanian) | « » 8:52 PM 9/29/2006 |
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| Quote, originally posted by Dartanian » | I sure hope so. If I hear someone say the B16 head is better than the GSR head one more time, I think I am going to scream. |
that is exactly the reason i thought i would dedicate an entire thread to this. So now everyone can base their replies off of facts instead of, "oh my homeboy said this...."
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russianswty
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362 posts [100%]
federal way wa
10-21-2005
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| « Re: The END ALL flow chart comparison between p72 and pr3 heads (dohcMONSTER) | « » 4:47 PM 10/17/2006 |
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dam this really helps, but does it matter which b16 or whch gsr. or better yet, what year heads are those?
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the_unknown
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614 posts [100%]
North Hollywood CA
2-21-2005
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no, b16 head is better because its used on the type r!!! you guys didnt know that? lol
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Gerbilo
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1470 posts [100%]
Chicago IL
1-26-2004
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Quality post 
solid facts are always good.
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Racermech
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2973 posts [100%]
P Town Yo ca
11-13-2004
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So with the numbers so close, is there really much difference. I can see the b16 is more linear, but the GSR ends just a bit higher. As they seem to be about 2(CFM?) different along the chart.
| Quote, originally posted by twentyhurtz » | | last but not least, the best, how do i keep rats from getting under the hood and quit chewing on my 80 dollar accel wires and vac lines? its pissing me off. |
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Dogginator
Pain Monopoly
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8640 posts [101%]
The Middle West
6-13-2004
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| « Re: The END ALL flow chart comparison between p72 and pr3 heads (Dartanian) | « » 9:09 PM 10/17/2006 |
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| Quote, originally posted by Dartanian » | And if I would say the sky is green, would you believe me? They are both good heads, no doubt, but saying one is better than the other is like saying an apple is better than an orange. Here is a bench flow test done on both heads. As you can see, the GSR has better flow at low and high rpm and the B16 flows better in the midrange. 
Here is a direct comparison on an ls-vtec build between the two: 
Blue: GSR
Red: B16
Now it is your turn to show me that the B16 head is superior to the GSR head like everyone is saying.
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What were the engine specs for the dyno plots and the flow tests (were intake manifolds installed for the flow test)?
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aaronISthrowed
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2349 posts [100%]
Dallas Tx
1-29-2006
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| « Re: The END ALL flow chart comparison between p72 and pr3 heads (Dogginator) | « » 11:47 PM 10/17/2006 |
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Good job This will stop alot of talking
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Promina
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182 posts [100%]
Colorado Springs Co
1-12-2006
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Yea, I was one of many Dartanian corrected on the better flow. Thanks again man... but another guy on HT going by bambam wrote a LS/V how to build thread and he talks about how the GSR helps ward off detonation with help of quench pads. Is this true? Sorry for being somewhat off the thread topic... Link to bambam's thread: http://www.honda-tech.com/zerothread/1676914
| Quote, originally posted by integradude98 » | | I do not live with momy or dady. I pay for all my shit. I live with my aunt and uncle. So yeah I know a lot. So stop filling my head with useless shit for useless imports face it dont cry wwwwwww. A v8 is always going to win. |
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hon2984
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245 posts [100%]
columbia Mo
7-16-2007
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| « Re: The END ALL flow chart comparison between p72 and pr3 heads (Dartanian) | « » 11:09 AM 3/22/2008 |
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but it seems like everyone is forgetting compression? the B16 head will raise the compression correct? if ur goinng for boost it really doesnt matter to much unless ur going for 11sec or better. N/A that motor would theoritcally be stronger because of the higher compression with very similar flow! 
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Dogginator
Pain Monopoly
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8640 posts [101%]
The Middle West
6-13-2004
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| « Re: The END ALL flow chart comparison between p72 and pr3 heads (hon2984) | « » 11:19 AM 3/22/2008 |
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| Quote, originally posted by hon2984 » | | the B16 head will raise the compression correct? |
No. P72 head combustion chamber volume: 41.6cc
PR3 head combustion chamber volume: 42.7cc
Source: http://www.c-speedracing.com/h...c.php The P72 head will have a higher compression ratio.
Storm is coming...Electrically disconnected for 10 days. | Quote, originally posted by Randy Pausch » | | When you’re screwing up and nobody’s saying anything to you anymore, that means they’ve given up on you. |
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