Re: CNC W9s
[Re: Hot 340]
#1591692
03/11/14 10:32 PM
03/11/14 10:32 PM
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Joined: Dec 2006
Posts: 3,396 Pa
Hot 340
OP
master
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OP
master
Joined: Dec 2006
Posts: 3,396
Pa
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Re: CNC W9s
[Re: Hot 340]
#1591693
03/11/14 10:33 PM
03/11/14 10:33 PM
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Joined: Dec 2006
Posts: 3,396 Pa
Hot 340
OP
master
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OP
master
Joined: Dec 2006
Posts: 3,396
Pa
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Re: CNC W9s
[Re: Hot 340]
#1591694
03/11/14 10:35 PM
03/11/14 10:35 PM
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Joined: Dec 2006
Posts: 3,396 Pa
Hot 340
OP
master
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OP
master
Joined: Dec 2006
Posts: 3,396
Pa
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Re: CNC W9s
[Re: rickraw]
#1591699
03/11/14 11:47 PM
03/11/14 11:47 PM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
master
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master
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
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Looks nice. He does awesome work and the ports work.
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: CNC W9s
[Re: W5DART66]
#1591704
03/12/14 02:01 PM
03/12/14 02:01 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Nice pictures I guess I need to hire you as my Photographer.
This is not my CNC chamber it was chapman I just reblended it to the valve job.
Peek flow was 379 intake 266 exhaust on 4.125" bore
the big valve hurt more on the. 4.125" bore (2.200" intake 50* seat)
I run the Chapman CNC W-9s and just with their ports they flowed 365
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Re: CNC W9s
[Re: pittsburghracer]
#1591707
03/12/14 02:56 PM
03/12/14 02:56 PM
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Joined: Jan 2003
Posts: 1,784 PA
W5DART66
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,784
PA
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Quote:
Quote:
Check your notes see what bore size they were flowed on.
This port will go 400 CFM with different valve valve job plus open chamber up.
As is they will support 800 plus HP.
I hate to say it but more to HP than flow numbers your chapman ports are way to small for drag race engine.
Brett just for curiosity what air-speeds are you seeing on the Chapmans compared to your program and at what runner cc?
My stuff is about 305-320 down center of port and 380-425 on short turn.
Never checked chapman but most of his w9 w8 stuff goes into choke at .650" lift and I have flowed w7,8,9 chapman stuff and all the round track stuff chokes right about same point.
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Re: CNC W9s
[Re: W5DART66]
#1591710
03/12/14 08:08 PM
03/12/14 08:08 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Quote:
My stuff is about 305-320 down center of port and 380-425 on short turn.
Don't admit that over on Speedtalk or some of the gurus there will on you about how it "can't" exceed 350 over the ST.
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