OBX RX8 Header
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When you install the header can you check the weight difference between the stock one and the OBX one.
But just from handling the OBX header, how is the weight of it? Does it feel heavy or pretty light?
But just from handling the OBX header, how is the weight of it? Does it feel heavy or pretty light?
always preoccupied.
Joined: Feb 2005
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From: Kirkland, WA
Originally Posted by Jabberwock
When you install the header can you check the weight difference between the stock one and the OBX one.
But just from handling the OBX header, how is the weight of it? Does it feel heavy or pretty light?
But just from handling the OBX header, how is the weight of it? Does it feel heavy or pretty light?
The OBX header feels very light, the heaviest part is the block flange it seems like..
Also to those waiting for someone to install it, it's going to be a while for me. I am trying to do all of my exhaust at once, plus I don't want to do this until my rx7 is up and running again since it used to be my daily driver. The rx7 is taking priority as I'm trying to get the MSnS working properly so I can start breaking in the motor.
For me, it'll be a while.
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I am not really sure if supercharger kits come with a redesigned header, but if they don't, would this header give a supercharger any improvement?
Another question to you dDub. I have had experience with stainless steel headers' cracking. Once with my 3SGTE swapped celica(Turbo) and another time with my TL(NA). I know that the heat produced by FI may cause cracking, but what about the heat from a NA rotary?
Another question to you dDub. I have had experience with stainless steel headers' cracking. Once with my 3SGTE swapped celica(Turbo) and another time with my TL(NA). I know that the heat produced by FI may cause cracking, but what about the heat from a NA rotary?
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From: Glendale, CA
Originally Posted by Jabberwock
I am not really sure if supercharger kits come with a redesigned header, but if they don't, would this header give a supercharger any improvement?
Another question to you dDub. I have had experience with stainless steel headers' cracking. Once with my 3SGTE swapped celica(Turbo) and another time with my TL(NA). I know that the heat produced by FI may cause cracking, but what about the heat from a NA rotary?
Another question to you dDub. I have had experience with stainless steel headers' cracking. Once with my 3SGTE swapped celica(Turbo) and another time with my TL(NA). I know that the heat produced by FI may cause cracking, but what about the heat from a NA rotary?
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Joined: Apr 2003
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From: Houston
If a stainless header has fallen apart before it's because the person doing the welding didn't know what they were doing.
Supercharging changes the rules when it comes to exhaust tuning. You would think that the same exhaust as an n/a would work just fine since there is nothing blocking the exhaust such as a turbo but things do need to change. A supercharged engine has much more exhaust than an n/a. This means that exhaust velocity will be faster. The same exhaust that tunes for 1 spot on an n/a will tune lower on a supercharged engine. Because of this supercharged exhausts need to be larger in general.
What does this mean for the RX-8? Well unfortunately the stock exhaust ports are pretty crappy for flow. Even the stock manifold and it's weird design can outflow the stock exhaust ports. Any header gains are just from mild tuning effects. By installing a header onto the Renesis with a supercharger you may or may not see any more gains than by installing one on an n/a. Nobody has tried it yet and documented the differences. I suspect that the stock exhaust ports in the engine are going to make any changes small.
Supercharging changes the rules when it comes to exhaust tuning. You would think that the same exhaust as an n/a would work just fine since there is nothing blocking the exhaust such as a turbo but things do need to change. A supercharged engine has much more exhaust than an n/a. This means that exhaust velocity will be faster. The same exhaust that tunes for 1 spot on an n/a will tune lower on a supercharged engine. Because of this supercharged exhausts need to be larger in general.
What does this mean for the RX-8? Well unfortunately the stock exhaust ports are pretty crappy for flow. Even the stock manifold and it's weird design can outflow the stock exhaust ports. Any header gains are just from mild tuning effects. By installing a header onto the Renesis with a supercharger you may or may not see any more gains than by installing one on an n/a. Nobody has tried it yet and documented the differences. I suspect that the stock exhaust ports in the engine are going to make any changes small.
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From: NJ
i got one last week but i havent been able to install it...i've been busy for a LOOONG time and its still sitting here in my room...im waiting on the b&b midpipe to come in and then i'll probably install it...
btw, does anyone know where i can get another gasket that connects the headers to the midpipe?
btw, does anyone know where i can get another gasket that connects the headers to the midpipe?
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I just buy it today
waiting now ...
for the gasket :
www.rx7.com
the sell it
waiting for the price shipping : super cat ...
waiting now ...
for the gasket :
www.rx7.com
the sell it
waiting for the price shipping : super cat ...
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From: Buddhist Monastery, High Himalaya Mtns. of Tibet
Originally Posted by VASasha
Why do you all buy parts and not install them? The suspense is killing me 
always preoccupied.
Joined: Feb 2005
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From: Kirkland, WA
Mine is sitting under my bed with high temp paint and waiting to get wrapped in header heat wrap.
Still wont be going on until I get my midpipe/catback. I was planning on getting those soon... but my 2nd gen rx7 projects took priority recently and I dumped a bunch of money into it.
Still wont be going on until I get my midpipe/catback. I was planning on getting those soon... but my 2nd gen rx7 projects took priority recently and I dumped a bunch of money into it.
always preoccupied.
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From: Kirkland, WA
No you don't have to, I chose to. The high temp paint protects it from the elements, and the heat wrap keeps excess heat out of the engine bay since the stock heat shields will most likely not be able to be used.
always preoccupied.
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From: Kirkland, WA
Originally Posted by TeamRX8
high temp paint? It's made out of T304 stainless steel
Protect under-car components from the elements.
Apply Design Engineering's silicone coating directly to exhaust manifold, pipe, and muffler surfaces to protect them against acid rain, snow, salt, solvents, and weather extremes. It withstands temperatures of up to 1,500 degrees F, and even helps prevent pipe wrap from deteriorating.
Apply Design Engineering's silicone coating directly to exhaust manifold, pipe, and muffler surfaces to protect them against acid rain, snow, salt, solvents, and weather extremes. It withstands temperatures of up to 1,500 degrees F, and even helps prevent pipe wrap from deteriorating.
I decided to wrap it to keep under hood temps down, so painting with the high temp silicone paint was a good idea. Don't want to trap moisture under the wrap and cause problems!
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From: Buddhist Monastery, High Himalaya Mtns. of Tibet
Not all stainless is the same. I use to own a boat and found that some stainless will rust. This was also in a fresh water envirorment (the Great Lakes).
