Cylinder Head project !!!
Evolved Member
Joined: Aug 2006
Posts: 570
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From: Halli Wood
nothing special on their design or anything, im trying to make a affordable RACE header that really pull out Power form our engines
I cant tell you it will outperform the 2 brands, but from my experience Im pretty much sure it will.
YES the 2 brand header pull OUT whp from OUR cars, but i think I can pull out more, at least a few more, maybe for the same price, and I bet my design will give a more overall whp!
MAYBE NOT... JUST time will tell...
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and to the other guy, well it sounds wrong , cause it says it is 1.5" runners, wich are too small for our engines, and the design its...
, and the collector its , but it should be better than the OEM!AND YES my english SUCK so bad, I bet you spend 1 hour trying to figure out what im trying to say! hahahaha!
well I dont share that opinion, cause the 2 famous brand of headers for OUR cars are non better than any 100 bucks header from EBAY!
nothing special on their design or anything, im trying to make a affordable RACE header that really pull out Power form our engines
I cant tell you it will outperform the 2 brands, but from my experience Im pretty much sure it will.
YES the 2 brand header pull OUT whp from OUR cars, but i think I can pull out more, at least a few more, maybe for the same price, and I bet my design will give a more overall whp!
MAYBE NOT... JUST time will tell...
------------
and to the other guy, well it sounds wrong , cause it says it is 1.5" runners, wich are too small for our engines, and the design its... , and the collector its , but it should be better than the OEM!
AND YES my english SUCK so bad, I bet you spend 1 hour trying to figure out what im trying to say! hahahaha!
nothing special on their design or anything, im trying to make a affordable RACE header that really pull out Power form our engines
I cant tell you it will outperform the 2 brands, but from my experience Im pretty much sure it will.
YES the 2 brand header pull OUT whp from OUR cars, but i think I can pull out more, at least a few more, maybe for the same price, and I bet my design will give a more overall whp!
MAYBE NOT... JUST time will tell...
------------
and to the other guy, well it sounds wrong , cause it says it is 1.5" runners, wich are too small for our engines, and the design its...
, and the collector its , but it should be better than the OEM!AND YES my english SUCK so bad, I bet you spend 1 hour trying to figure out what im trying to say! hahahaha!
FYI its not the ID of the runners , its how long and WHERE they are connected. APparently SEMI HEADERS(FACTORY) offers the best compromise .
If you use bigger than 1.5 inch you need a shorter header to compensate , so that the pulsations can join faster to build and help the scavenging process @ high RPMS thats why headers usually work best with CAMS and PORTING..
NOW PLEASE I AM ASKING POLITELY , don't say my 1.5 inch runners designs its not good because yours is slightly bigger, from now on if you want to criticize something at least show the knowledge to prove it . I did ask the guy to build it with a 1.5 ID because I wanted the 1.5. THE runners are longer and and join further with a smaller collector this offers better midrange power and that's what I wanted. In overall there are three facts ID, collector DIAMETER, Length of runners. I used a exhaust builders book to compute those three numbers based on the MODS i had and the power range I wanted....
Evolved Member
Joined: Aug 2006
Posts: 570
Likes: 0
From: Halli Wood
FYI its not the ID of the runners , its how long and WHERE they are connected. APparently SEMI HEADERS(FACTORY) offers the best compromise .
If you use bigger than 1.5 inch you need a shorter header to compensate , so that the pulsations can join faster to build and help the scavenging process @ high RPMS thats why headers usually work best with CAMS and PORTING..
NOW PLEASE I AM ASKING POLITELY , don't say my 1.5 inch runners designs its not good because yours is slightly bigger, from now on if you want to criticize something at least show the knowledge to prove it . I did ask the guy to build it with a 1.5 ID because I wanted the 1.5. THE runners are longer and and join further with a smaller collector this offers better midrange power and that's what I wanted. In overall there are three facts ID, collector DIAMETER, Length of runners. I used a exhaust builders book to compute those three numbers based on the MODS i had and the power range I wanted....
If you use bigger than 1.5 inch you need a shorter header to compensate , so that the pulsations can join faster to build and help the scavenging process @ high RPMS thats why headers usually work best with CAMS and PORTING..
NOW PLEASE I AM ASKING POLITELY , don't say my 1.5 inch runners designs its not good because yours is slightly bigger, from now on if you want to criticize something at least show the knowledge to prove it . I did ask the guy to build it with a 1.5 ID because I wanted the 1.5. THE runners are longer and and join further with a smaller collector this offers better midrange power and that's what I wanted. In overall there are three facts ID, collector DIAMETER, Length of runners. I used a exhaust builders book to compute those three numbers based on the MODS i had and the power range I wanted....
Anyway, I told you, yes that thing its better than OEM one, but I dont think that even gives you the same HP that RPW or RRM headers give.
+ RPW 4-1 Header is 44mm = 1.73" , and its mandrel bend, and the collector should be better than yours, so that means you can extract more power with RPW that with that thing you have.
Also the 4-1 design will always give you more HI end, than MID range, thats why Im not completly satisfied with a 4-1 design.
You have the Exhaust Builder BOOK, Good for you man, I don't need that, cause I have the Tunner/technician/mechanic Experience inside my head, so I don't need a Book that tells me what HE thinks about something I already know.
HEY AFTER ALL you will know if I'm wrong, I say my header will extract more power AT LEAST 1whp more than any other HEADER on the MARKET for OUR CARS!
Maybe Im Wrong! I can't predict the Future, so Only time will tell...
GOOD LUCK!
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iTrader: (3)
Joined: Feb 2005
Posts: 244
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From: Lakenheath UK, but my heart is in PR
Anyway, I told you, yes that thing its better than OEM one, but I dont think that even gives you the same HP that RPW or RRM headers give.
+ RPW 4-1 Header is 44mm = 1.73" , and its mandrel bend, and the collector should be better than yours, so that means you can extract more power with RPW that with that thing you have.
Also the 4-1 design will always give you more HI end, than MID range, thats why Im not completly satisfied with a 4-1 design.
+ RPW 4-1 Header is 44mm = 1.73" , and its mandrel bend, and the collector should be better than yours, so that means you can extract more power with RPW that with that thing you have.
Also the 4-1 design will always give you more HI end, than MID range, thats why Im not completly satisfied with a 4-1 design.
Also we all must remember that the exhaust pulses (resonance) must be taken into consideration when designing any header (hence the length of the runners) because nobody wants to have an opening exhaust valve that instead of having a low pressure zone (that helps to suck out the exhaust gases from the cylinder)right after it, has a high pressure zone (because of a returning exhaust pulse from another cylinder) that causes pumping losses.
Im not saying that Either RPW nor RRM didnt take this into consideration as I dont know the reasearch and development they performed, but I am saying that a lot of people (and by that I dont mean you, just in general) dont even know about it (the resonance related issues) and just think that by enlarging the diameter they will see gains and thats it.
Maybe you guys will have a little dyno showdown going on in there
Evolved Member
Joined: Aug 2006
Posts: 570
Likes: 0
From: Halli Wood
Not to be a party-pooper but when you talk about HP, do you mean top end HP? Because you admitted yourself that depending on the design, the gains will be felt at a certain level of RPM's, so maybe (just maybe) Migue's design might not give as much top end HP but on the low end and mid range it might have much better gains, again who knows just yet?
Also we all must remember that the exhaust pulses (resonance) must be taken into consideration when designing any header (hence the length of the runners) because nobody wants to have an opening exhaust valve that instead of having a low pressure zone (that helps to suck out the exhaust gases from the cylinder)right after it, has a high pressure zone (because of a returning exhaust pulse from another cylinder) that causes pumping losses.
Im not saying that Either RPW nor RRM didnt take this into consideration as I dont know the reasearch and development they performed, but I am saying that a lot of people (and by that I dont mean you, just in general) dont even know about it (the resonance related issues) and just think that by enlarging the diameter they will see gains and thats it.
Maybe you guys will have a little dyno showdown going on in there
Also we all must remember that the exhaust pulses (resonance) must be taken into consideration when designing any header (hence the length of the runners) because nobody wants to have an opening exhaust valve that instead of having a low pressure zone (that helps to suck out the exhaust gases from the cylinder)right after it, has a high pressure zone (because of a returning exhaust pulse from another cylinder) that causes pumping losses.
Im not saying that Either RPW nor RRM didnt take this into consideration as I dont know the reasearch and development they performed, but I am saying that a lot of people (and by that I dont mean you, just in general) dont even know about it (the resonance related issues) and just think that by enlarging the diameter they will see gains and thats it.
Maybe you guys will have a little dyno showdown going on in there
I will dyno the car BEFORE (I will need a stock down pipe - cause mine its modified) and then i will dyno it with "THE HEADER", and If I can find someone who wants to give any other brand header to test against "THE HEADER" I will test it also, so we ALL can see the difference.
