FAQ |
Members List |
Social Groups |
Calendar |
Search |
Today's Posts |
#1041
|
||||
|
||||
DCI RA-V Intake Port Flow Numbers
Here is what we're currently looking at for intake flow number with a 2.270 valve using a 4.200 test fixture at 28".
__________________
2023 Best ET Slip 60’ 1.224 330 3.186 1/8 4.784 MPH 152.07 1000 6.175 ET 7.347 MPH 189.92 Weight 3650 YouTube Channel --> https://www.youtube.com/channel/UC21...rWwgFdfTRqShGQ FaceBook Group --> https://www.facebook.com/groups/220092308823847/ |
#1042
|
||||
|
||||
380 cfm @ 600...nice!!
|
#1043
|
|||
|
|||
Keep in mind too that this is on a 4.200" test fixture. Ed's bore is 4.350" so they will flow a little more we think on the bigger bore. The really good part is the port does not back up and is very clean sounding on the bench. I believe Ed is going to dyno his engine again with my heads when we get them done. So depending on how much more mine flow if they do flow better, and how much more efficient they are. We should see a horsepower increase I hope !!! I think Ed has the flow sheet for his McCarty heads as well. He may or may not want to share them that's up to him.
__________________
Don Johnston DCI MOTORSPORTS LLC 330-850-5050 shop 330-628-3354 cell Designer if the DCI Tiger Heads and the NEW DCI Ram Air 5 Heads !!!!! |
#1044
|
||||
|
||||
DCI - McCarty RAV Intake Flow Comparison
If we can get this together early enough, we'll head over to Lenny's for another dyno session with the new DCI V heads.
The McCarty RA-V flow sheet was posted awhile back so the information posted below is nothing new.
__________________
2023 Best ET Slip 60’ 1.224 330 3.186 1/8 4.784 MPH 152.07 1000 6.175 ET 7.347 MPH 189.92 Weight 3650 YouTube Channel --> https://www.youtube.com/channel/UC21...rWwgFdfTRqShGQ FaceBook Group --> https://www.facebook.com/groups/220092308823847/ |
#1045
|
||||
|
||||
Quote:
Any idea what the DCI heads would flow at 4.18x? |
#1046
|
||||
|
||||
It's hard to imagine the McCarty heads having zero intake flow @ .100" lift...
__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) ... or has a Pontiac born the same year as Jim Wangers? (1926} |
#1047
|
||||
|
||||
Quote:
McCarty/BES didn't provide the .100 lift flow numbers. If either one of them can supply it I'll update the spreadsheet. I do have 2 flow sheets from BES for 2 different sets of McCarty heads, neither of them include .100 flow numbers.
__________________
2023 Best ET Slip 60’ 1.224 330 3.186 1/8 4.784 MPH 152.07 1000 6.175 ET 7.347 MPH 189.92 Weight 3650 YouTube Channel --> https://www.youtube.com/channel/UC21...rWwgFdfTRqShGQ FaceBook Group --> https://www.facebook.com/groups/220092308823847/ |
#1048
|
||||
|
||||
I think what Jack is trying to say is why did you provide a false data point?
Should have extrapolated the .100" data if you needed that point? Why not just show the graph with the McCarty graph starting at .200"?
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#1049
|
|||
|
|||
I'm sure they don't flow zero at .100". The information just was not provided apparently to Ed .So instead of making up a number he chose to use a zero. If I remember correctly I think Lynn's heads after Tony ported them flowed around 60 cfm at .100". I could be wrong ,but I think it's pretty close to that. Don't shoot the messenger, he can only state what he has been told LOL.
__________________
Don Johnston DCI MOTORSPORTS LLC 330-850-5050 shop 330-628-3354 cell Designer if the DCI Tiger Heads and the NEW DCI Ram Air 5 Heads !!!!! |
#1050
|
|||
|
|||
ponjohn, we crowd the cylinder wall when we test. So I doubt it will have much if any effect. Remember I designed my heads to fit on a 4.150 bore with a 2.200 intake valve. You can put a 2.250 intake in and still fit it on the bore, but I don't recommend it. I think it would shroud the intake valve to much.
__________________
Don Johnston DCI MOTORSPORTS LLC 330-850-5050 shop 330-628-3354 cell Designer if the DCI Tiger Heads and the NEW DCI Ram Air 5 Heads !!!!! |
#1051
|
|||
|
|||
ponjohn, I was just on my facebook page and I forgot I had posted some pic's of my heads on a factory block. This was a 4.181 bore 455 block and the valves in the head are 2.25 int and 1.700 exh. There is a pic there as well with a 2.300 int valve, and it gives you a good visual of the cylinder wall clearance even with the bigger valve.
__________________
Don Johnston DCI MOTORSPORTS LLC 330-850-5050 shop 330-628-3354 cell Designer if the DCI Tiger Heads and the NEW DCI Ram Air 5 Heads !!!!! |
#1052
|
||||
|
||||
Quote:
Stan
__________________
Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
#1053
|
||||
|
||||
Considering all the misinformation supplied to Ed by Lynn who knows how accurate any of the MCcArty Numbers really are anyways, .1 Lift is Really a Moot Point. But continue if you want.
|
#1054
|
||||
|
||||
Quote:
Stan
__________________
Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
#1055
|
||||
|
||||
YAWN.
|
#1056
|
||||
|
||||
My apologies for confusing you 2 by posting ALL the “Raw” flow data I have. I assumed it would be obvious that “Zero” flow at any lift could be ignored. See what happens when you assume… Now if I did extrapolate the data point and it didn’t match the actual measured number, “If someone actually has it” wouldn’t that be considered fabricating numbers? Like I said, if someone can supple the actual measured number for .100 lift, I’ll be happy to add it. For those still confused, please use the following instructions when viewing the comparison chart.
1) When comparing the flow numbers between the 2 heads ignore .100 lift. If anyone needs help following these instructions please feel free to send me a PM with a description of what’s confusing you and your number. If there are still a number of you still confused, I’ll write up more detailed instructions.
__________________
2023 Best ET Slip 60’ 1.224 330 3.186 1/8 4.784 MPH 152.07 1000 6.175 ET 7.347 MPH 189.92 Weight 3650 YouTube Channel --> https://www.youtube.com/channel/UC21...rWwgFdfTRqShGQ FaceBook Group --> https://www.facebook.com/groups/220092308823847/ |
#1057
|
||||
|
||||
Normally a "Space" means that data was not taken at a given point.
I have seen flow sheets over the years where no flow numbers were reported below .300 lift, (and there were spaces in those data blocks, not zeros), so it is a simple error by a guy who posted the data without really understanding the whole flow process. Ed was not a guy trying to falsify data, in my mind, but it is always better to post actual data given vs a "filling in the squares with a number approach". A simple error. Why don't we leave it at that, (But Jack is right to question the posted data). Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#1058
|
||||
|
||||
Ed, Thanks for posting the numbers. A large number of us are quietly encouraging you to take the time to dyno the beast. If engine performs as expected in the car, you will have the dyno numbers as a data reference and if for whatever reason the engine does not perform in the car...well...turn up the boost! ...you know what I mean.
Did any of that record snow melt yet? |
#1059
|
||||
|
||||
Quote:
Hey Jim, We do plan on running this on Lenny's dyno NA with the DCI RAV heads, low compression and 93 octane pump gas. Floor is just about complete along with the chrome moly drive shaft tunnel.
__________________
2023 Best ET Slip 60’ 1.224 330 3.186 1/8 4.784 MPH 152.07 1000 6.175 ET 7.347 MPH 189.92 Weight 3650 YouTube Channel --> https://www.youtube.com/channel/UC21...rWwgFdfTRqShGQ FaceBook Group --> https://www.facebook.com/groups/220092308823847/ |
#1060
|
||||
|
||||
Explain this footer comment Ed: Twin 88M Turbo Rebuild.
That implies that there was something wrong with the Turbonetics T-88 Turbos. You have never run the turbos, period on any engine. I would change that to Twin 88M Turbo INSTALLATION Redo. Just saying. Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
Reply |
|
|