Do these flow numbers seem infalted?
07-01-2010, 02:16 PM
#1
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Do these flow numbers seem infalted? I found some heads on ebay that a guy ported himself. He does all the port work out of his garage, and sells them for $800 on ebay. He posted up some flow numbers, and i was wondering if they seem too good to be true...
.100 80
.200 160
.300 240
.400 280
.500 315
.600 340
.100 80
.200 160
.300 240
.400 280
.500 315
.600 340
07-01-2010, 02:36 PM
#2
Ok first off what head does this come from. 2nd flow numbers are subjective, meaning you will never get any one to tell you the numbers they flow on their air bench will flow the same on another air bench. No matter who they are TEA AI or any one every air bench is different. They will tell you they will flow close but not the same numbers they would open themselves up to law suits.
Me you I would not buy any "performance" heads of any one on ebay. Buy some 243s, 241s, 799s, 317s in the stock form and then have them worked yourself.
Me you I would not buy any "performance" heads of any one on ebay. Buy some 243s, 241s, 799s, 317s in the stock form and then have them worked yourself.
07-01-2010, 02:49 PM
#3
Those flow numbers are BS with a 98% chance of certainty....(And that percentage might be kind).
The biggest give away is the .300 number
How big is the valve....the port....etc.
Chances of those heads flowing even close to what he claims is very remote.
If your on a budget just look at a new head from TSP, Patriot, etc.....at least you have some recourse and our dealing with reputable company's that support the board.
-Tony
The biggest give away is the .300 number
How big is the valve....the port....etc.
Chances of those heads flowing even close to what he claims is very remote.
If your on a budget just look at a new head from TSP, Patriot, etc.....at least you have some recourse and our dealing with reputable company's that support the board.
-Tony
07-01-2010, 02:54 PM
#4
Those flow numbers are BS with a 98% chance of certainty....(And that percentage might be kind).
The biggest give away is the .300 number
How big is the valve....the port....etc.
Chances of those heads flowing even close to what he claims is very remote.
If your on a budget just look at a new head from TSP, Patriot, etc.....at least you have some recourse and our dealing with reputable company's that support the board.
-Tony
The biggest give away is the .300 number
How big is the valve....the port....etc.
Chances of those heads flowing even close to what he claims is very remote.
If your on a budget just look at a new head from TSP, Patriot, etc.....at least you have some recourse and our dealing with reputable company's that support the board.
-Tony
The LSx gods have spoken
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07-01-2010, 06:01 PM
#8
Want to know what's funny....
Our new 245 head that I spent months designing originally, then re-designed when I was tinkering and found some more, then re-designed again.....well you get the idea.
The bad news.....the release of this head was pushed back a retarded amount of time. The good news....I had the opportunity to continue to refine and improve a piece that was very good a year ago (when I thought I was finished) and flows similar to what your Ebay head claims. The difference here is the new AFR does it for real right off the CNC machine....and Im not even talking about a Mamo romanced piece.
This head is killer and features a large very efficient port and chamber design with a 2.165 intake valve and 1.600 exhaust.
Check out these real world numbers.....OP....excuse me for jacking your thread a little!
BTW, for those who have been waiting, our first batch of 245's shipped this week
07-01-2010, 09:10 PM
#11
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Yes....but he's not very business savvy as it appears he charges the least for all his hard earned efforts....LOL
Want to know what's funny....
Our new 245 head that I spent months designing originally, then re-designed when I was tinkering and found some more, then re-designed again.....well you get the idea.
The bad news.....the release of this head was pushed back a retarded amount of time. The good news....I had the opportunity to continue to refine and improve a piece that was very good a year ago (when I thought I was finished) and flows similar to what your Ebay head claims. The difference here is the new AFR does it for real right off the CNC machine....and Im not even talking about a Mamo romanced piece.
This head is killer and features a large very efficient port and chamber design with a 2.165 intake valve and 1.600 exhaust.
Check out these real world numbers.....OP....excuse me for jacking your thread a little!
BTW, for those who have been waiting, our first batch of 245's shipped this week
Want to know what's funny....
Our new 245 head that I spent months designing originally, then re-designed when I was tinkering and found some more, then re-designed again.....well you get the idea.
The bad news.....the release of this head was pushed back a retarded amount of time. The good news....I had the opportunity to continue to refine and improve a piece that was very good a year ago (when I thought I was finished) and flows similar to what your Ebay head claims. The difference here is the new AFR does it for real right off the CNC machine....and Im not even talking about a Mamo romanced piece.
This head is killer and features a large very efficient port and chamber design with a 2.165 intake valve and 1.600 exhaust.
Check out these real world numbers.....OP....excuse me for jacking your thread a little!
BTW, for those who have been waiting, our first batch of 245's shipped this week
I want these
07-01-2010, 09:13 PM
#12
For instance my 241's run:
.100 - 68
.200 - 146
.300 - 213
.400 - 250
.500 - 278
.600 - 292
with about a 215-217cc runner and a stock 2.0 valve.
07-01-2010, 11:41 PM
#14
Spark plug.....10-15 CFM's....rocker hole....maybe 5 more
I bet the heads won't muster an honest 300 CFM but who the hell knows.
IMO he would probably sell more if he advertised a more realistic flow curve (even if that was inflated) so it wasn't so obvious for the average reasonably informed consumer to raise the BS flag on.
Till next time....
07-02-2010, 02:51 PM
#16
Basically taking the 407 build I recently featured (with the 215's) up a notch with a little more head....little more cam....etc. Both should be very interesting.
Then Im swinging for the fences with my big motor that will feature the 245's.
Unfortunately work before pleasure so my motor comes last.....probably at least four months away before Im on the dyno.
Ive been without an acceleration fix for two years this month (thats when my 383 came out of my Vette).....needless to say Im dying and looking forward to the new combo!
PS....Check the August PHR for the story on the 407 with the 215 heads.....pretty good feature I thought.
07-02-2010, 03:18 PM
#17
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Ive got two complete dyno tested engine builds in the works for customers right now.....both 416 CID strokers with LS3 blocks.
Basically taking the 407 build I recently featured (with the 215's) up a notch with a little more head....little more cam....etc. Both should be very interesting.
Then Im swinging for the fences with my big motor that will feature the 245's.
Unfortunately work before pleasure so my motor comes last.....probably at least four months away before Im on the dyno.
Ive been without an acceleration fix for two years this month (thats when my 383 came out of my Vette).....needless to say Im dying and looking forward to the new combo!
PS....Check the August PHR for the story on the 407 with the 215 heads.....pretty good feature I thought.
Basically taking the 407 build I recently featured (with the 215's) up a notch with a little more head....little more cam....etc. Both should be very interesting.
Then Im swinging for the fences with my big motor that will feature the 245's.
Unfortunately work before pleasure so my motor comes last.....probably at least four months away before Im on the dyno.
Ive been without an acceleration fix for two years this month (thats when my 383 came out of my Vette).....needless to say Im dying and looking forward to the new combo!
PS....Check the August PHR for the story on the 407 with the 215 heads.....pretty good feature I thought.
07-02-2010, 09:29 PM
#19
853 doing that? .3 numbers???? what valve??? don't even matter
might be both valves open? haha somthing unrealistic to do that. the curtin area to move that at just .3 is BS. To work backwords setting the valve and thoat size I can't see working on a $800 853. Or its combo of lift valves from diffrent ports to look like that, I don't know how you could get thouse numbers to look like that up past .25 L/D the 853 as cast short turn sucks.
If you look into this I bet its the guy porting in that bird tent on the side of his trailor. Putting the videos on youtube, a few months ago.
might be both valves open? haha somthing unrealistic to do that. the curtin area to move that at just .3 is BS. To work backwords setting the valve and thoat size I can't see working on a $800 853. Or its combo of lift valves from diffrent ports to look like that, I don't know how you could get thouse numbers to look like that up past .25 L/D the 853 as cast short turn sucks.
If you look into this I bet its the guy porting in that bird tent on the side of his trailor. Putting the videos on youtube, a few months ago.
Last edited by studderin; 07-02-2010 at 09:41 PM.