Looking for a large diameter exhaust.
#1
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Looking for a large diameter exhaust.
I've been looking around for something that can flow nicley and looks good. It needs to be at leat 3.5inch and no bottlenecks. I'd perfer titanium but the only one i found above 3inch id the FEED for $2k.
I looked at the Apex GT but it seems from this picture that it has a severe bottleneck so its not a true 3.74 inch diameter???
https://www.rx7club.com/attachment.p...chmentid=50492
I also saw a Border-racing exhaust in one or two threads on here but could find no more info ANYwhere, anyone?
TIA
I looked at the Apex GT but it seems from this picture that it has a severe bottleneck so its not a true 3.74 inch diameter???
https://www.rx7club.com/attachment.p...chmentid=50492
I also saw a Border-racing exhaust in one or two threads on here but could find no more info ANYwhere, anyone?
TIA
#2
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RP/Greddy race exhaust: http://www.rx7.com/store/rx7/fdexhaust.html
It's not titanium, but the entire exhaust (center section back) only weighs 36 pounds. Nice deep tone. My car dyno'd 362 RWHP at 12 PSI (single) with this.
Gene
It's not titanium, but the entire exhaust (center section back) only weighs 36 pounds. Nice deep tone. My car dyno'd 362 RWHP at 12 PSI (single) with this.
Gene
#3
Rotary Enthusiast
HI I have a 3.5" all the way from single turbo to end, I modify the turbo V-band outlet for 3.5" pipe plus two Magnaflows 3.5" all the way thru works good sounds nice. Im starting on a 4" system for a customers FD, single turbo. but I have to have the vehicle in house. RON
#5
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Originally Posted by 2dark2Bslow
I've been looking around for something that can flow nicley and looks good. It needs to be at leat 3.5inch and no bottlenecks. I'd perfer titanium but the only one i found above 3inch id the FEED for $2k.
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Originally Posted by Mahjik
Why exactly do you think you need an exhaust diameter larger than 3"? Many people have been running high powered cars with 3" exhaust for years without a problem.
#7
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HI with turbochargers the highest effeicency would be expand the exhaust gases as quickly possible after they leave the turbine exducer wheel, hence large pipe, or no pipe. but it might be loud, so they invented exhaust systems.
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Originally Posted by ronbros3
HI with turbochargers the highest effeicency would be expand the exhaust gases as quickly possible after they leave the turbine exducer wheel, hence large pipe, or no pipe. but it might be loud, so they invented exhaust systems.
To a degree, do a search. Sometimes velocity is more important then no backpressure.
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Here is my Border Racing Burnout (type I)for sale
Here is their website Border-Racing Japan Website
The fact that the main 90 φ tail 115 φ catalyst is removed was produced to prerequisite, it is the muffler of high power direction. It has produced after the genuine front pipe with stainless steel pipe of everything 90 φ. You exchange with the front pipe for this corporation make FD3S simultaneously when, from, it is possible effectively to do exhaust. * In order to remove the catalyst, there are times when engine adjustment becomes necessary. (The instruction manual of attachment please do engine adjustment in reference.) * The photograph, the front pipe becomes the difference sale.
Here is their website Border-Racing Japan Website
The fact that the main 90 φ tail 115 φ catalyst is removed was produced to prerequisite, it is the muffler of high power direction. It has produced after the genuine front pipe with stainless steel pipe of everything 90 φ. You exchange with the front pipe for this corporation make FD3S simultaneously when, from, it is possible effectively to do exhaust. * In order to remove the catalyst, there are times when engine adjustment becomes necessary. (The instruction manual of attachment please do engine adjustment in reference.) * The photograph, the front pipe becomes the difference sale.
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Originally Posted by gfelber
RP/Greddy race exhaust: http://www.rx7.com/store/rx7/fdexhaust.html
It's not titanium, but the entire exhaust (center section back) only weighs 36 pounds. Nice deep tone. My car dyno'd 362 RWHP at 12 PSI (single) with this.
Gene
It's not titanium, but the entire exhaust (center section back) only weighs 36 pounds. Nice deep tone. My car dyno'd 362 RWHP at 12 PSI (single) with this.
Gene
Mahjik: I know i will need larger than a 3in b/c the car will start off with no less than 400rwhp. If and when i decide to to make more power i dont want to have to do it over. I understand your concern though.
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Originally Posted by 2dark2Bslow
This one looks nice but it is made to bolt up to a 3in dp. I could cut off the 3in part and have it welded up but id hate to cut it up in case i didnt lik it it would be harder to sell.
Mahjik: I know i will need larger than a 3in b/c the car will start off with no less than 400rwhp. If and when i decide to to make more power i dont want to have to do it over. I understand your concern though.
Mahjik: I know i will need larger than a 3in b/c the car will start off with no less than 400rwhp. If and when i decide to to make more power i dont want to have to do it over. I understand your concern though.
Hey, what are you doing to it, what's done to it? Is it gonna be streetable?
#13
Original Gangster/Rotary!
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Originally Posted by gfelber
RP/Greddy race exhaust: http://www.rx7.com/store/rx7/fdexhaust.html
It's not titanium, but the entire exhaust (center section back) only weighs 36 pounds. Nice deep tone. My car dyno'd 362 RWHP at 12 PSI (single) with this.
Gene
It's not titanium, but the entire exhaust (center section back) only weighs 36 pounds. Nice deep tone. My car dyno'd 362 RWHP at 12 PSI (single) with this.
Gene
what are the sound levels like? I may have to talk to Ari about that sucker.
#16
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Originally Posted by 2dark2Bslow
Mahjik: I know i will need larger than a 3in b/c the car will start off with no less than 400rwhp. If and when i decide to to make more power i dont want to have to do it over. I understand your concern though.
The RX7.com street class drag car put down more power with a 3" exhaust.
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wouldnt the fact that you have a 3 inch downpipe. mean that the apexi gt spec's megaphone piping going from 3 inch to 3.75 inch be okay then. assuming your midpipe is 3inch also otherwise wouldnt it just be dumb to have a big sudden gap in the piping diameter. sorry if i read your post wrong..its late and i am tired.
#23
Originally Posted by 2dark2Bslow
I've been looking around for something that can flow nicley and looks good. It needs to be at leat 3.5inch and no bottlenecks. I'd perfer titanium but the only one i found above 3inch id the FEED for $2k.
I looked at the Apex GT but it seems from this picture that it has a severe bottleneck so its not a true 3.74 inch diameter???
https://www.rx7club.com/attachment.p...chmentid=50492
I also saw a Border-racing exhaust in one or two threads on here but could find no more info ANYwhere, anyone?
TIA
I looked at the Apex GT but it seems from this picture that it has a severe bottleneck so its not a true 3.74 inch diameter???
https://www.rx7club.com/attachment.p...chmentid=50492
I also saw a Border-racing exhaust in one or two threads on here but could find no more info ANYwhere, anyone?
TIA
#24
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Originally Posted by Mahjik
RX7.com doesn't appear to have their drag car info up anymore. I do know the catback they were using was the Greddy Power Extreme (as they sold me mine).
(that's what she said )
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ok, but what doesnt make sense is with a 3.74 inch pipe and a 75mm flange, how can it fit flush to a 75 mm dp. (Not that the car is even having one but for explainations sakes.)
The flanged exhaust would need a coupler to to make a transition in size, therefore the pipe can't be 3.75 all the way...right?
The flanged exhaust would need a coupler to to make a transition in size, therefore the pipe can't be 3.75 all the way...right?