Jeuprx-8's infamous twin-intake setup...
10-21-2004, 08:39 AM
#27
4AT poor mileage king
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Originally Posted by rotarygod
I don't doubt that there is better airflow to your intake. I do doubt very highly that it is working as a ram air system as you imply. Not with an RE intake and heat shield it isn't. If you don't have dyno proof, you don't have a basis to judge improvement. In fact even then you don't. You can't feel a few horsepower. In fact the only way to accurately judge performance from a system that relies on vehicle speed is with GPS.
What he said.
10-21-2004, 06:11 PM
#28
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I don't know what the problem is here...
Someone found something you can do yourself that costs $60 and without a doubt in my mind makes at least a slight improvement and people are jumping down his throat. Similar setups are used in a lot of race cars, everything from similar intake philosophies to cooling brakes to cooling oil coolers to cooling drivers. This should not be a shocking news event.
Its a quite simple setup, placing tubes in high pressure areas of the car and feeding it to lower pressure areas which creates natural circulation. While it may not be ramming air into the engine, it is creating a higher pressure around the intake area then would normally exist which results in better flow and cooler air. By not being a sealed box it also eliminates the frictional losses associated with trying to suck air explicitly from 4 extra feet of tubing and a few bends. Also, while dryer hose may be a bit ghetto, but its: cheap, is made to resist some decent temps, flows pretty good, is used by race car teams, and who cares if it falls apart because its cheap and easy to replace and you have an air filter to stop particles from being sucked in the engine.
I could see these comments if he was trying to sell a pair of hand polished $400 muffler bearings, but this is a bit harsh...
Someone found something you can do yourself that costs $60 and without a doubt in my mind makes at least a slight improvement and people are jumping down his throat. Similar setups are used in a lot of race cars, everything from similar intake philosophies to cooling brakes to cooling oil coolers to cooling drivers. This should not be a shocking news event.
Its a quite simple setup, placing tubes in high pressure areas of the car and feeding it to lower pressure areas which creates natural circulation. While it may not be ramming air into the engine, it is creating a higher pressure around the intake area then would normally exist which results in better flow and cooler air. By not being a sealed box it also eliminates the frictional losses associated with trying to suck air explicitly from 4 extra feet of tubing and a few bends. Also, while dryer hose may be a bit ghetto, but its: cheap, is made to resist some decent temps, flows pretty good, is used by race car teams, and who cares if it falls apart because its cheap and easy to replace and you have an air filter to stop particles from being sucked in the engine.
I could see these comments if he was trying to sell a pair of hand polished $400 muffler bearings, but this is a bit harsh...
10-21-2004, 07:10 PM
#30
Kaiten Kenbu Rokuren
Originally Posted by pr0ber
I don't know what the problem is here...
Someone found something you can do yourself that costs $60 and without a doubt in my mind makes at least a slight improvement and people are jumping down his throat. Similar setups are used in a lot of race cars, everything from similar intake philosophies to cooling brakes to cooling oil coolers to cooling drivers. This should not be a shocking news event.
Its a quite simple setup, placing tubes in high pressure areas of the car and feeding it to lower pressure areas which creates natural circulation. While it may not be ramming air into the engine, it is creating a higher pressure around the intake area then would normally exist which results in better flow and cooler air. By not being a sealed box it also eliminates the frictional losses associated with trying to suck air explicitly from 4 extra feet of tubing and a few bends. Also, while dryer hose may be a bit ghetto, but its: cheap, is made to resist some decent temps, flows pretty good, is used by race car teams, and who cares if it falls apart because its cheap and easy to replace and you have an air filter to stop particles from being sucked in the engine.
I could see these comments if he was trying to sell a pair of hand polished $400 muffler bearings, but this is a bit harsh...
Someone found something you can do yourself that costs $60 and without a doubt in my mind makes at least a slight improvement and people are jumping down his throat. Similar setups are used in a lot of race cars, everything from similar intake philosophies to cooling brakes to cooling oil coolers to cooling drivers. This should not be a shocking news event.
Its a quite simple setup, placing tubes in high pressure areas of the car and feeding it to lower pressure areas which creates natural circulation. While it may not be ramming air into the engine, it is creating a higher pressure around the intake area then would normally exist which results in better flow and cooler air. By not being a sealed box it also eliminates the frictional losses associated with trying to suck air explicitly from 4 extra feet of tubing and a few bends. Also, while dryer hose may be a bit ghetto, but its: cheap, is made to resist some decent temps, flows pretty good, is used by race car teams, and who cares if it falls apart because its cheap and easy to replace and you have an air filter to stop particles from being sucked in the engine.
I could see these comments if he was trying to sell a pair of hand polished $400 muffler bearings, but this is a bit harsh...
10-21-2004, 08:23 PM
#31
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I'm might try this the next weekend I'm bored. Couldn't hurt. I'll go with the more stealthy look and post pics and impressions..
Last edited by cgrx; 10-21-2004 at 08:25 PM.
10-21-2004, 09:42 PM
#32
No actually it can hurt^^^^ couldnt this hurt airflow more did he do that atmospheres of pressure test infron of those tubes and in the shielded area i bet its less pressure than it was when it was stock but what the hell do i know im only 17....
SEriously um... it was a good effort next time try making it out of a metal maybee some 1 from your shop can help you out.
SEriously um... it was a good effort next time try making it out of a metal maybee some 1 from your shop can help you out.
10-21-2004, 10:06 PM
#33
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...and again, read the ram air thread. there isn't a high pressure area in front of the tube because if the motor is spinning at all (making power) it will suck it in faster than he's moving through the air. at the vary most, it'll make a difference of a few degrees in the ambient tempurature of the air the engine is inducting, which will net out to about zero difference.
Last edited by wakeech; 10-21-2004 at 10:11 PM.
10-21-2004, 10:07 PM
#34
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I agree, but some people on here are jerks, have nothing better to do than say "run a search", or "this won't work" and stupid stuff like that. Remember Ito's porting? Yea all that crap happens in most of the posts on here. Next time you see a post about a new idea or something, I want everyone to see the first few posters, they wil probably be negative comments that come from a certain few that shall remain nameless.
I know it works and that is all that matters... Just trying to share with my fellow RX-8ers at post-ownership. I would have never posted this if I didn't notice any differance. I was looking at the BMW M3 CSL online today and realized that this has vitrually the same concept that I put on the RX-8. Front bumper tube leading to the intake. Basically the same design, but more sophisticated and BMW-ized.... This setup will be one of my first mods come next spring after I get new BBS CH's.
This is a cheap mod that most people can do for low cost. If you do hit how I had it, I garuntee you will have the same results. Just make sure you use high temp hoses, otherwise they may burn from the heat.
Good luck~
Troy J.
Last edited by BMW Man; 10-21-2004 at 10:11 PM.
10-21-2004, 11:26 PM
#35
I've been considering a similar setup.
This is an old racers trick.
All it does is ensure a colder air temperture for the intake, which is good.
In fact the rotory creates so much heat it probably will only bring the temperture down to that of a competitive piston engine intake system.
What about the trick of wrapping the intake box with dry ice?
That works too!
I was actually considering any ram air from the front being applied to the engine bay just to reduce heat, and also to help the AC problem.
Like someone else said forced air the to brake sytem helps, it also helps in other areas.
I think of it as maintaing the HP you have at high tempertures as compared to driving when its colder.
This is an old racers trick.
All it does is ensure a colder air temperture for the intake, which is good.
In fact the rotory creates so much heat it probably will only bring the temperture down to that of a competitive piston engine intake system.
What about the trick of wrapping the intake box with dry ice?
That works too!
I was actually considering any ram air from the front being applied to the engine bay just to reduce heat, and also to help the AC problem.
Like someone else said forced air the to brake sytem helps, it also helps in other areas.
I think of it as maintaing the HP you have at high tempertures as compared to driving when its colder.
10-23-2004, 11:06 PM
#37
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If you take the intake off, the car will not start becuase the maf would be laying in the engine compartment. My girlfriend did this before when I was working on my car when she tried to move it and it didn't start. I kindly told he to STFU and get away from my car. RB got a 3whp gain on their intake and I believe 3.5whp on exhaust and 4whp with a midpipe?
Troy J.
Troy J.
It is 12:58 am, so I have an excuse.
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