Headers
05-27-2011, 04:16 PM
#29
I have a tacked-up fitment mule sitting in my office.
I am trying to make time to verify installation and fitment (since I have 50 coil kits to build over the next coupla days) but, once I do, it will be no trouble having a bunch of them built and ready to ship. No price yet as it will also require a special midpipe (which will be included). When we are ready we will make the detailed announcement. Thanks for your loyalty, guys.
I am trying to make time to verify installation and fitment (since I have 50 coil kits to build over the next coupla days) but, once I do, it will be no trouble having a bunch of them built and ready to ship. No price yet as it will also require a special midpipe (which will be included). When we are ready we will make the detailed announcement. Thanks for your loyalty, guys.
05-27-2011, 07:58 PM
#30
I know Eric Meyer says that the RX-8 really needs a longer header to maximize performance. I remember reading Rotary God years ago saying that to be able to get any sort of scavenging from it, you would need it to be longer than stock.
So yeah, I'd wait for theirs, since I know they make good stuff, and they have great results.
So yeah, I'd wait for theirs, since I know they make good stuff, and they have great results.
05-28-2011, 04:45 PM
#31
I HATE SPEEDBUMPS!
I know Eric Meyer says that the RX-8 really needs a longer header to maximize performance. I remember reading Rotary God years ago saying that to be able to get any sort of scavenging from it, you would need it to be longer than stock.
So yeah, I'd wait for theirs, since I know they make good stuff, and they have great results.
So yeah, I'd wait for theirs, since I know they make good stuff, and they have great results.
I thought shorter manifold gives more hp than longer ones. The DX headers are shorter and gives more power than those with longer ones. I might be wrong, but i'm just curious.
05-28-2011, 07:38 PM
#32
I'mma firin' mah lazor!!!
It depends on the motor. Usually the length of primaries decides where the power band will be but the merge, collector length/diameter, goilette spike and anti reversion steps all have a large part in that too, as well as promoting scavenging.
But, I admit. I don't really know ****-all about exhaust tuning on a Rene. That's why I'm here
But, I admit. I don't really know ****-all about exhaust tuning on a Rene. That's why I'm here
05-28-2011, 08:09 PM
#33
On piston engines, you guys are right. Shorter runners on manifolds (be it exhaust or intake) will raise power after peak torque.
If I recall properly, the reason is because of the length of time between exhaust pulses. Since the rotors spin at 1/3 of e-shaft speed, even at the top of the rev range you still have a good amount of time (relatively speaking of course) between exhaust pulses.
Since exhaust scavenging is based off timing the negative pressure pulse traveling up the non-firing cylinder, having a longer amount of time between pulses would require a longer pipe. At least I think. I'm kind of bridging gaps a bit, but it sounds about right anyways.
If I recall properly, the reason is because of the length of time between exhaust pulses. Since the rotors spin at 1/3 of e-shaft speed, even at the top of the rev range you still have a good amount of time (relatively speaking of course) between exhaust pulses.
Since exhaust scavenging is based off timing the negative pressure pulse traveling up the non-firing cylinder, having a longer amount of time between pulses would require a longer pipe. At least I think. I'm kind of bridging gaps a bit, but it sounds about right anyways.
05-29-2011, 02:48 PM
#35
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05-29-2011, 11:28 PM
#36
I HATE SPEEDBUMPS!
It depends on the motor. Usually the length of primaries decides where the power band will be but the merge, collector length/diameter, goilette spike and anti reversion steps all have a large part in that too, as well as promoting scavenging.
But, I admit. I don't really know ****-all about exhaust tuning on a Rene. That's why I'm here
But, I admit. I don't really know ****-all about exhaust tuning on a Rene. That's why I'm here
I'm not Albert Einstein, but i'm not sure about that
05-30-2011, 12:56 AM
#37
05-30-2011, 03:16 AM
#38
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From just a header stand point it looks good but I know pricing will be above $600 and maybe its me buy if some has plans to go turbo maybe not worth getting. Since there really isnt to many good quality companies out there so I know it will sale.
05-30-2011, 08:06 AM
#40
I will very likely get the BHR header once it's available, assuming a matching midpipe is available that has a catalyst in it. Even if I decide to go turbo later one, I would likely go rear mounted, so the header won't go to waste (as an aside, the thing that has stymied my planning of a rear mounted turbo is the placement of the air intake... I haven't liked any solution I've seen yet).
05-30-2011, 11:04 AM
#44
I'mma firin' mah lazor!!!
05-30-2011, 12:33 PM
#45
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from my experience in the RX8 field BHR and Racing Beat are two companies who really stand behind their products with service and honest over the phone or in person advice. you cant go wrong with either product.
Not to say Pettit isn't one of those companies ( I just haven't bought anything form them yet ::wink: There are plenty more reputable RX7 businesses, but as far as products specifically for the 8 goes, Ill stick with those two (three).
BHR you will get more power, but your going to have to find a way around the noise and emissions. RB works great and looks great, works with stock setup but you wont notice anything unless you get a midpipe and exhuast, if anything at all. I ceramic coated my RB header and I swear by it, keeps temps down all over the place. More heat out the tailpipe, the less in my engine bay/intake/oil/coolant.
Not to say Pettit isn't one of those companies ( I just haven't bought anything form them yet ::wink:
There are plenty more reputable RX7 businesses, but as far as products specifically for the 8 goes, Ill stick with those two (three).BHR you will get more power, but your going to have to find a way around the noise and emissions. RB works great and looks great, works with stock setup but you wont notice anything unless you get a midpipe and exhuast, if anything at all. I ceramic coated my RB header and I swear by it, keeps temps down all over the place. More heat out the tailpipe, the less in my engine bay/intake/oil/coolant.
05-30-2011, 08:08 PM
#48
It's true. Manifolds act as sort of a pivot for your powerband. Longer runners increase power below peak torque, at the sacrifice of power after peak torque. Short runners do the opposite. Runner diameter control where peak torque actually occurs. Of course this all depends on cam selection (or port timing on rotaries).
05-30-2011, 09:36 PM
#49
"I wanna go fast!"
I have a tacked-up fitment mule sitting in my office.
I am trying to make time to verify installation and fitment (since I have 50 coil kits to build over the next coupla days) but, once I do, it will be no trouble having a bunch of them built and ready to ship. No price yet as it will also require a special midpipe (which will be included). When we are ready we will make the detailed announcement. Thanks for your loyalty, guys.
I am trying to make time to verify installation and fitment (since I have 50 coil kits to build over the next coupla days) but, once I do, it will be no trouble having a bunch of them built and ready to ship. No price yet as it will also require a special midpipe (which will be included). When we are ready we will make the detailed announcement. Thanks for your loyalty, guys.
THE ANTICIPATION IS KILLING ME! I was going to wait until i got the kit (as well as my intake undertray) to do my AEM intake... but i just finished installing the intake yesterday cuz i lost patience lol. Good thing about the intake is i dont have to remove the whole thing to get at the coils (and im pretty sure the same with the undertray).
Looking forward to that email Charles that says "SHIPPED" lol. Make me a happy man please! <3 <3
05-31-2011, 12:24 AM
#50
I HATE SPEEDBUMPS!
