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Re: CNC Ported Iron heads [Re: mopster] #1557027
01/04/14 01:35 AM
01/04/14 01:35 AM
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SoCal
Brian Hafliger Offline OP
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Quote:

You are referring to 350 fps air speed but that works only in local areas. Average air speed canīt be over 311 fps or port will be choked.




146 cfm per sq. in. is the rule so 2.200 x 146 = 321 possible cfm.


Brian Hafliger
Re: CNC Ported Iron heads [Re: Brian Hafliger] #1557028
01/04/14 08:17 AM
01/04/14 08:17 AM
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Finland
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mopster Offline
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146cfm rule is theoretical number for frictionless orfice without losses, you canīt use that for cylinder head ports.

350 fps is the limit for local air speed of the fast areas like short side floor or adjacent to pushrod wall, above 350fps you will have losses.

If you calculate air speed for a certain CSA, you will have an average speed for that section, and thats approximately the number you see when you stick a pitot probe in the middle of that section of the port. If average speed of a section is 350 fps, its WAY too fast. Generally anything over 311 fps is not good. It can be higher than that but you need a better port design than small block mopar with std port location and std pushrod location.

Re: CNC Ported Iron heads [Re: Brian Hafliger] #1557029
01/04/14 10:44 AM
01/04/14 10:44 AM
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Florida
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408Dust Offline
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What do you think the flow numbers would be at 162cc?


Quote:

.100 68
.200 142
.300 201
.400 249
.500 281
.550 290
.600 296
.650 293
.700 294

28" on a 4.030 bore...4.125 bore added 3 cfm at .500 and 4 cfm at .600 and then went backwards but still flowed 295 cfm at .650 lift.
Brian



Re: CNC Ported Iron heads [Re: Brian Hafliger] #1557030
01/04/14 05:24 PM
01/04/14 05:24 PM
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Lima, Peru
domingo Offline
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what iron heads are these?

and what are the EQ heads?

Re: CNC Ported Iron heads [Re: domingo] #1557031
01/04/14 07:10 PM
01/04/14 07:10 PM
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Central NC
gch Offline
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ok I will say it,No big block love?!

Re: CNC Ported Iron heads [Re: gch] #1557032
01/04/14 08:42 PM
01/04/14 08:42 PM
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FastOne Offline
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4 different manifolds?, that will be interesting, look forward to hearing about that

Who cares about big blocks

Re: CNC Ported Iron heads [Re: 408Dust] #1557033
01/05/14 12:12 AM
01/05/14 12:12 AM
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SoCal
Brian Hafliger Offline OP
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Quote:

What do you think the flow numbers would be at 162cc?
Quote:



Not sure what you mean? They start out around 179cc I believe...


Brian Hafliger
Re: CNC Ported Iron heads [Re: domingo] #1557034
01/05/14 12:13 AM
01/05/14 12:13 AM
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SoCal
Brian Hafliger Offline OP
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Quote:

what iron heads are these?

and what are the EQ heads?




EQ are Engine Quest heads...these are Indy iron X heads....


Brian Hafliger
Re: CNC Ported Iron heads [Re: gch] #1557035
01/05/14 12:19 AM
01/05/14 12:19 AM
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SoCal
Brian Hafliger Offline OP
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Quote:

ok I will say it,No big block love?!




The thing that bothers me about the Eddy victor BB head is no headers work on the tall deck...I know some headers can be made to work, but a lot of guys like to bolt on headers and go...
Plus I'm an Indy dealer and between the EZ line, -1 line and SR line you can make good power.

I've got a 540 BB mopar on the dyno now, 10.4:1 compression, 325EZ heads, 1050 on an Indy intake and solid roller for street and it made 745HP@ 6600rpm and 690TQ@ 4400rpm! That's a nice spread and TQ is over 680ft.lbs. for 900rpm!
Ofcourse the heads were rubbed on a bit, but not too much.
I'll post pics tomorrow nite


Brian Hafliger
Re: CNC Ported Iron heads [Re: sshemi] #1557036
01/05/14 12:51 AM
01/05/14 12:51 AM
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jeff500 Offline
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Rumor has it they cost close to 3k so i went with the airwolfs for $2400..

Re: CNC Ported Iron heads [Re: jeff500] #1557037
01/05/14 01:06 AM
01/05/14 01:06 AM
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SoCal
Brian Hafliger Offline OP
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Quote:

Rumor has it they cost close to 3k so i went with the airwolfs for $2400..




I'm sure you got your $$$ worth


Brian Hafliger
Re: CNC Ported Iron heads [Re: Brian Hafliger] #1557038
01/05/14 11:09 AM
01/05/14 11:09 AM
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408Dust Offline
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Can they flow decent numbers when the intake and exhaust are only allowed a maximum cc size? (class racing) Thinking about submitting the EQ head to NHRA for approval, would be nice to use a fresh set of castings instead of old wore out core shifted castings.



Quote:

Quote:

What do you think the flow numbers would be at 162cc?
Quote:



Not sure what you mean? They start out around 179cc I believe...



Re: CNC Ported Iron heads [Re: Brian Hafliger] #1557039
01/05/14 02:08 PM
01/05/14 02:08 PM
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Posts: 15,439
Val-haul-ass... eventually
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BradH Offline
Taking time off to work on my car
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Quote:

The thing that bothers me about the Eddy victor BB head is no headers work on the tall deck...I know some headers can be made to work, but a lot of guys like to bolt on headers and go...



The Victor's exhaust port location is identical the MP Stage VIs (I've lined up both heads side by side to confirm this). I have TTI's 2" B/E-body headers for my Challenger that I used w/ my old Stage VIs and it'll be a bolt-in / no-change-required installation when my Victor-headed RB 452 goes back in w/ the TTIs.

The TTI 2" w/ Victor or Stage VI heads are actually a better fit clearance-wise than my previous Hooker 1-7/8" Comp headers w/ OEM iron heads. The only downside is that the starter is captured by the routing of the tubes, requiring the driver-side header to be loosened up and pulled away from the engine to remove it. "Been there, done that."

Also, TTI says their 2 to 2-1/8" Indy RB step header will also work, although I haven't looked into all of TTI's footnotes re: the application w/ Victor or Stage VI heads. I know the standard 2" header is a "no brainer" in my case and don't feel any need to change. I'd actually like to have seen a 1-7/8" to 2" step design offered, but that's just me.

Re: CNC Ported Iron heads [Re: mopster] #1557040
01/05/14 02:22 PM
01/05/14 02:22 PM
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Posts: 15,439
Val-haul-ass... eventually
B
BradH Offline
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I'll probably pi$$ off somebody here, but for this sort of application I think some of you are getting way too hung up thinking Brian's heads having FPS readings being too high and exceeding their "theoretical" max flow limits. Is it "better" if your port design results in measurements that fit within these ideals? Probably. Is it going to kill the head's performance if they don't? Nope.

Example: My old Stage VIs were only 213-215cc ported, had a standard 2.20" x 1.20" entry w/ a pinch significantly less than that due to the nature of the port. They flowed 305+ at .600" and made over 600 HP on a pump-gas 440 (10.8 CR) w/ a .600" solid flat-tappet cam. That was enough to push my 3755# (w/ driver) street car to 10.5s at 126 w/ a full exhaust on DOT tires. FPS? Almost 400 over the short turn. Yeah, it would have been nice if the air speed was more in line w/ the ideals and "should" have performed better if they were. But that's what they were AND how they performed, regardless.

This ain't Pro Stock stuff here...

Re: CNC Ported Iron heads [Re: BradH] #1557041
01/05/14 02:46 PM
01/05/14 02:46 PM
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ademon Offline
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Anything to be gained using a 2.05 valve on these X heads?

Re: CNC Ported Iron heads [Re: ademon] #1557042
01/05/14 06:30 PM
01/05/14 06:30 PM
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Posts: 5,484
SoCal
Brian Hafliger Offline OP
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Brian Hafliger  Offline OP
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Quote:

Anything to be gained using a 2.05 valve on these X heads?




Unfortunately, the port stalls hard when you go up in valve size...it stalls around .550 lift.
Problem is the water below the short turn...just can't shape it properly.

BradH...quit subliminaly trying to talk me into a cnc ported Eddy Victor


Brian Hafliger
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