It was me that missed some posts not some posts that were missing! 
View Poll Results: Get rid of CNC track lines on the intake runners?
Yes
21
23.08%
No
70
76.92%
Voters: 91. You may not vote on this poll
CNC track lines on intake runner
Originally Posted by PortPros1
I wouldn't suggest smoothing the runners in your heads, our finish comes from many hours of flow testing and years of experience. If you’re not an experienced head porter with a flow bench, I would suggest you leave the heads as you bought them.
Hopefully I didn't screw them up too bad. What kind of finish do you guys use for the intake ports if you don't mind me asking. Do you polish up the combustion chamber?
Originally Posted by Malihoochie
Some posts seem to have been erased.
Originally Posted by Gunnar@Patriot
Today's discount price on flowing a head is.....$0.00. A good old freebie! That is hard to beat.
RonO
Originally Posted by Gunnar@Patriot
Today's discount price on flowing a head is.....$0.00. A good old freebie! That is hard to beat.
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Verdad Gallardo Well just wanted to fill everyone in with my results. I was told it was going to be a "standard flow" with 28inches of water, but they were flowed on a 4.255 bore because that's all he had. They were waaaay off so they're not worth posting. After I got the numbers, he said he's never flowed advertised numbers on his bench.
The one interesting thing I found out was that the surface with the *very very rough* finish flowed 1.5 cmf LESS than the smoother one. It was a difference between about a 120ish grit and about a 50 grit finish. Maybe the actual port was the reason for the difference, not the surface texture. Wierd?!
The one interesting thing I found out was that the surface with the *very very rough* finish flowed 1.5 cmf LESS than the smoother one. It was a difference between about a 120ish grit and about a 50 grit finish. Maybe the actual port was the reason for the difference, not the surface texture. Wierd?!
Last edited by Xtnct00WS6; Apr 27, 2006 at 10:25 AM.
Hi
what does skuff means ? and why it made him nearly cry? (maybe the meaning of skuff answers that)
another question is about the wetflow being the best of all method to flow a head and that it`s more to a real world measure .....
so if on the same car a AFR 205 and a DART 205 same valves sizes and springs etc ... we will see better rwhp and track time of the same everything else but the heads(cam 60`s numbers weather)....because the DART`s is the best of the best (both their own castings DART`s being the wetflowed ones) .... I think it`s a good question anybody agrees?
very informative thread (smooth intake runner doesn`t mean better because the marks contribute to faster dense mixture flow) didn`t know that.
what does skuff means ?
and why it made him nearly cry? (maybe the meaning of skuff answers that)another question is about the wetflow being the best of all method to flow a head and that it`s more to a real world measure .....
so if on the same car a AFR 205 and a DART 205 same valves sizes and springs etc ... we will see better rwhp and track time of the same everything else but the heads(cam 60`s numbers weather)....because the DART`s is the best of the best (both their own castings DART`s being the wetflowed ones) .... I think it`s a good question anybody agrees?
very informative thread (smooth intake runner doesn`t mean better because the marks contribute to faster dense mixture flow) didn`t know that.
Originally Posted by Bader-X
Hi
what does skuff means ? and why it made him nearly cry? (maybe the meaning of skuff answers that)
another question is about the wetflow being the best of all method to flow a head and that it`s more to a real world measure .....
so if on the same car a AFR 205 and a DART 205 same valves sizes and springs etc ... we will see better rwhp and track time of the same everything else but the heads(cam 60`s numbers weather)....because the DART`s is the best of the best (both their own castings DART`s being the wetflowed ones) .... I think it`s a good question anybody agrees?
very informative thread (smooth intake runner doesn`t mean better because the marks contribute to faster dense mixture flow) didn`t know that.
what does skuff means ?
and why it made him nearly cry? (maybe the meaning of skuff answers that)another question is about the wetflow being the best of all method to flow a head and that it`s more to a real world measure .....
so if on the same car a AFR 205 and a DART 205 same valves sizes and springs etc ... we will see better rwhp and track time of the same everything else but the heads(cam 60`s numbers weather)....because the DART`s is the best of the best (both their own castings DART`s being the wetflowed ones) .... I think it`s a good question anybody agrees?
very informative thread (smooth intake runner doesn`t mean better because the marks contribute to faster dense mixture flow) didn`t know that.
what did he say? If you are saying that Dart heads will outperform AFR's the answer is no, however for the price they are a damn good deal.
Originally Posted by Stang's Bane
what did he say? If you are saying that Dart heads will outperform AFR's the answer is no, however for the price they are a damn good deal.What's wierd is that when I flowed my heads, the smoother intake runner came out to be the better one by 1 cfm. I'm still going with the relatively rough surface texture though. The guy I got my heads flowed by is on really good terms with Joe Mondello so he called and asked what the surface should be and he said 60 grit finish. So that's what it'll be. I even made the point of making sure he mentioned what kind of heads I have too. I'm prolly starting the install tonight or tomorrow since I just passed emissions
Now I'm good to go!Btw...skuff means to roughen up the texture.
Last edited by Xtnct00WS6; Apr 29, 2006 at 12:28 PM.
ahaaa .... that`s why he almost cryed
thanks for the clarification ....
what I said was :
dart using the wet flow bench (the best)
afr (assuming) normal bench
dart and afr use their own castings and port designs on stock valve angle
equales dart 205cc = better than afr 205cc in the REAL world track racing on nothing but a heads change between them since it was done on the super duper wet flow bench!
(if that is true the the platinum Iron Eagle is a really good head to consider since it was wet flow improved)<----that`s not the subject just a thought
thanks for the clarification ....
what I said was :
dart using the wet flow bench (the best)
afr (assuming) normal bench
dart and afr use their own castings and port designs on stock valve angle
equales dart 205cc = better than afr 205cc in the REAL world track racing on nothing but a heads change between them since it was done on the super duper wet flow bench!
(if that is true the the platinum Iron Eagle is a really good head to consider since it was wet flow improved)<----that`s not the subject just a thought
Last edited by Bader-X; May 2, 2006 at 01:10 AM.
How about a before and after flow comparison, and then a similar dyno from the same combo?
My guess is that its worth nothing. Leave them alone. It can be tempting to "go the extra mile" but I think you're going to be wasting cartridge rolls.
Ryan
My guess is that its worth nothing. Leave them alone. It can be tempting to "go the extra mile" but I think you're going to be wasting cartridge rolls
. Ryan
Here's a direct before and after on the same flow bench. It seems you can add about 1% flow with a little extra work.
https://ls1tech.com/forums/generation-iii-internal-engine/501812-lasershop-s-patriots-reflowed.html
https://ls1tech.com/forums/generation-iii-internal-engine/501812-lasershop-s-patriots-reflowed.html
Originally Posted by Xtnct00WS6
Btw...skuff means to roughen up the texture.
Interesting how the actual head porters here have say one thing and the amateur experts say another.
Also if you dont have the right equiptment on your flow bench I dont see how you can say "you've never had a head flow the advertised numbers" and be accurate about it.
You havent duplicated the test so you really cant say one way or the other.
Atmomization isnt just and old school term and still applies today. That air and fuel still need to mix on their way into the combustion chamber to maximize combustion. If mixing the air and fuel wasnt needed then injection would be direct into the cylinder.
Originally Posted by Xtnct00WS6
Here's a direct before and after on the same flow bench. It seems you can add about 1% flow with a little extra work.
https://ls1tech.com/forums/showthread.php?t=501812
https://ls1tech.com/forums/showthread.php?t=501812
Look at the .200 flow# drop and the exhaust drop,
This flow doesn't mean that they will perform well in real motor environment. Atomisation is gonna be seriously affected.
Super Bling but, polishing intake runners damages the performance.
Ouside bling is awsome."
This flow doesn't mean that they will perform well in real motor environment. Atomisation is gonna be seriously affected.
Super Bling but, polishing intake runners damages the performance.
Ouside bling is awsome."
You just dont seem to want to listen to anyone but yourself so you go ahead. He didnt see a 1% gain, he saw eradic results with losses in some areas. In general the performance of those heads have been compromised. But you dont want to listen to fuel atomization because you think you know more than the pro's do...
good luck I'm out.
Originally Posted by 99blancoSS
dont you mean scuff, an actual word.
Interesting how the actual head porters here have say one thing and the amateur experts say another.
Also if you dont have the right equiptment on your flow bench I dont see how you can say "you've never had a head flow the advertised numbers" and be accurate about it.
You havent duplicated the test so you really cant say one way or the other.
Atmomization isnt just and old school term and still applies today. That air and fuel still need to mix on their way into the combustion chamber to maximize combustion. If mixing the air and fuel wasnt needed then injection would be direct into the cylinder.
Interesting how the actual head porters here have say one thing and the amateur experts say another.
Also if you dont have the right equiptment on your flow bench I dont see how you can say "you've never had a head flow the advertised numbers" and be accurate about it.
You havent duplicated the test so you really cant say one way or the other.
Atmomization isnt just and old school term and still applies today. That air and fuel still need to mix on their way into the combustion chamber to maximize combustion. If mixing the air and fuel wasnt needed then injection would be direct into the cylinder.
I think for the most part everyone is in agreement here. We agree that a rough intake port is optimal. There's no confusion between the pro's and amateurs. I believe that the rough port is optimal because it's mostly an issue of fuel flow and not atomization.
In regards to not getting "the advertised numbers", it's pretty common to have differences between flow benches. The guy that flowed my heads said his bench almost never flows the publicized numbers. He also flowed them on a different bore size too. I do have 401/392 on a Mustang Dyno with a small cam, cats, and an LS1 intake. I think the heads ended up being JUST FINE
Last edited by Xtnct00WS6; Feb 8, 2007 at 02:42 PM.
Originally Posted by onebadrubi
what happened with lasershop and Patroit reflowing hte heads?
EDIT...I don't want to mislead anyone. He gained airflow, but fuelflow will now suffer since the intake wall is too smooth.
Last edited by Xtnct00WS6; Feb 8, 2007 at 03:10 PM.