Flowbench Games
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Joined: Feb 2001
Posts: 3,068
From: Cincinnati, Ohio
Flowbench Games
Been playing with a superflow SF600 last couple of weeks. I decided to throw a set of completely stock LT1 Aluminum heads onto it.
Interesting difference what a pipe and radius inlet do. Just a post to show what the same head will do, being flown honestly on the same bench and same day. 28" h20. We have a superComm too, but I havent done much with it. Maybe Ill redo these on it too later on.
NO INLET RADIUS / NO EXHAUST PIPE
INTAKE EXHAUST
.100 55 32
.200 118 86
.300 157 112
.400 174 126
.500 180 134
.600 180 141
WITH INLET RADIUS / WITH PIPE
INTAKE EXHAUST
.100 60 33
.200 121 90
.300 166 118
.400 195 134
.500 198 145
.600 DNF DNF
Interesting difference what a pipe and radius inlet do. Just a post to show what the same head will do, being flown honestly on the same bench and same day. 28" h20. We have a superComm too, but I havent done much with it. Maybe Ill redo these on it too later on.
NO INLET RADIUS / NO EXHAUST PIPE
INTAKE EXHAUST
.100 55 32
.200 118 86
.300 157 112
.400 174 126
.500 180 134
.600 180 141
WITH INLET RADIUS / WITH PIPE
INTAKE EXHAUST
.100 60 33
.200 121 90
.300 166 118
.400 195 134
.500 198 145
.600 DNF DNF
Last edited by atljar; Jan 11, 2006 at 01:54 AM.
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Joined: Aug 2002
Posts: 1,509
From: Red Oak Texas
Re: Flowbench Games
just playing with the shape and thickness of the radius will effect the #'s agreat deal too. The thicker and slower the radius to the intake inlet, the better this works and the higher the port flows, the more increase this is worth.
Some heads that have a climbing shortside for the exhaust (FORD TFS High Port or Victor head) NEED a pipe to let the air collect and travel a good ways before it exits to atmosphere. The pipe helps this alot. A pipe will always help some but a port that is shaped like this will show alot more gain than a port that actually can straiten itself out and has the roof/floor the same cross section apart for a lil bit before exiting to atmosphere.
Crank the depression up to 36" or even 48" and reflow both ways and you will see even more of a % increase with these things added. The 28" test is what most refer to flow #'s by but the engine is sucking MUCH harder on the ports than this and this higher depression will show more problems with a port.
Atljar, you need to get that solid roller beats together man.
Lloyd Elliott
972-617-5671
Eportworks.com
Some heads that have a climbing shortside for the exhaust (FORD TFS High Port or Victor head) NEED a pipe to let the air collect and travel a good ways before it exits to atmosphere. The pipe helps this alot. A pipe will always help some but a port that is shaped like this will show alot more gain than a port that actually can straiten itself out and has the roof/floor the same cross section apart for a lil bit before exiting to atmosphere.
Crank the depression up to 36" or even 48" and reflow both ways and you will see even more of a % increase with these things added. The 28" test is what most refer to flow #'s by but the engine is sucking MUCH harder on the ports than this and this higher depression will show more problems with a port.
Atljar, you need to get that solid roller beats together man.
Lloyd Elliott
972-617-5671
Eportworks.com
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Joined: Feb 2001
Posts: 3,068
From: Cincinnati, Ohio
Re: Flowbench Games
Perry-
These were pulled straight from the car, sprayed down with some brake clean, and put on the bench. I didnt see any pitting on the valve faces, or wear in the stems. They did have some exhaust carbon buildup. The intake side was clean. I can find out the year and mileage later on today.
Lloyd-
Thanks for commenting and the insite. We also have some port mapping equiptment / velocity / swirl meters that I may play around with later on. My buddy is brining in a set of his ported LT1 heads, so it will be interesting to see the comparison.
On my car, well ya. lol. It was together once with a hyrdo cam, made touch over 400 rwhp with a burned #6 plug wire and pulling out max timing. I tore it all down again (3rd or 4th time now in the last year) and put the solid cam in it and fixed some small other probelms. Between work and school, I dont get much time for it, and my interest in finishing it is off and on.
Finally turned the key last weekend, fired right up. Then proceeded to melt my h20 pump wiring (been in there for years?), and the fuel return line was leaking. Lost interest again after that, maybe ill fix it this weekend, haha.
These were pulled straight from the car, sprayed down with some brake clean, and put on the bench. I didnt see any pitting on the valve faces, or wear in the stems. They did have some exhaust carbon buildup. The intake side was clean. I can find out the year and mileage later on today.
Lloyd-
Thanks for commenting and the insite. We also have some port mapping equiptment / velocity / swirl meters that I may play around with later on. My buddy is brining in a set of his ported LT1 heads, so it will be interesting to see the comparison.
On my car, well ya. lol. It was together once with a hyrdo cam, made touch over 400 rwhp with a burned #6 plug wire and pulling out max timing. I tore it all down again (3rd or 4th time now in the last year) and put the solid cam in it and fixed some small other probelms. Between work and school, I dont get much time for it, and my interest in finishing it is off and on.
Finally turned the key last weekend, fired right up. Then proceeded to melt my h20 pump wiring (been in there for years?), and the fuel return line was leaking. Lost interest again after that, maybe ill fix it this weekend, haha.
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Joined: Oct 2002
Posts: 6,518
Re: Flowbench Games
Jared,
The rule for the radius on the port entry is 1/2 of the width. So if the port is 1.25" wide you need a .625" (5/8) radius entry to the port.
The cool thing about a flow bench is not what numbers it gives you at certain lifts, it's everything else it can tell you.
Bret
The rule for the radius on the port entry is 1/2 of the width. So if the port is 1.25" wide you need a .625" (5/8) radius entry to the port.
The cool thing about a flow bench is not what numbers it gives you at certain lifts, it's everything else it can tell you.
Bret
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Joined: Feb 2001
Posts: 3,068
From: Cincinnati, Ohio
Re: Flowbench Games
By radius entry do you mean like what would be the equivalent added runner length of the entry?
On a side note Bret, do you know a guy named Paul Higgins, does a lot of hemi stuff? He's my instructor now for this class I am taking, guess he has been building pulling truck motors for the last 20 years. Next week we are putting a 55X blown alcohol Hemi with Veney CNC heads on it on the DTS. Should be about 3000hp and fun
On a side note Bret, do you know a guy named Paul Higgins, does a lot of hemi stuff? He's my instructor now for this class I am taking, guess he has been building pulling truck motors for the last 20 years. Next week we are putting a 55X blown alcohol Hemi with Veney CNC heads on it on the DTS. Should be about 3000hp and fun
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Registered User
Joined: Feb 2001
Posts: 3,068
From: Cincinnati, Ohio
Re: Flowbench Games
Ah, it just clicked what you meant. Sometimes slightly different wording will get it for me, lol.
Just wondering on the paul thing, he may be an exaggerater Guess we will see what his engine does.
Just wondering on the paul thing, he may be an exaggerater
Guess we will see what his engine does.
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