Greddy Turbo Installed - Details Inside!!!!
01-13-2005, 03:59 PM
#426
Originally Posted by rotarygod
The key word in all of that is VOLUME. The volume or amount of air in cfm that a turbo flows is what determines power output. Pressure is irrelevant without airflow. You can compress a sealed compartment with zero airflow through it. It doesn't do the same amount of work. A larger turbo will flow a greater amount of air at the same pressure than a smaller one will. You can take a stock Turbo II RX-7, crank up the boost to 10 psi and get about 250 hp. You can change the turbo to a larger one and run 10 psi and now get nearly 350 hp with no other changes. Pressure is irrelevant. Volume isn't. If you had 2 turbos that had the same efficiency and flow capability at the same pressure, you have 2 of the same turbo.
Intercoolers can also be too small or too big. Many people have changed to enormous intercoolers on small stock turbos and lost power. This is much more prevalent at lower boost pressures.
Intercoolers can also be too small or too big. Many people have changed to enormous intercoolers on small stock turbos and lost power. This is much more prevalent at lower boost pressures.
Since the manifold size is fixed, the volume is based on pressure and temperature. The flow rate will follow.
Originally Posted by epitrochoid
the maf on this sytem, like many others, is directly behind the air filter. i understand your logic, and i dont even understand why you can't just put it just before the TB but im sure there's some logical reason.
Also, it isn't very happy to see the elevated intake temperatures.
There is a clamping value on the E-Manage to take care of the volume of air expelled by the BOV. It works like a charm.
01-13-2005, 04:01 PM
#427
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No, the compressor is larger, not the tubing. A larger compressor doesn't have to work as hard to produce pressure equal to a smaller counterpart. A larger compressor would generate a cooler charge at a given boost pressure, this would cause the air to be more dense. Cool air = Dense air, dense air is good. In turn, you get more O2 molecules in the combustion chamber at an equal pressure.
In simple terms, there is more oxygen in a 5psi, 1L sample sample of "air" at 20F than a sample of equal volume and pressure at 30F. Things expand when heated, unless of course we are talking about water. Thats a whole-nother story though, I'll save you my lecture on "Hydrogen Bonding".
In simple terms, there is more oxygen in a 5psi, 1L sample sample of "air" at 20F than a sample of equal volume and pressure at 30F. Things expand when heated, unless of course we are talking about water. Thats a whole-nother story though, I'll save you my lecture on "Hydrogen Bonding".
Last edited by 93silverFD; 01-13-2005 at 04:04 PM.
01-13-2005, 04:07 PM
#428
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My point was that it doesn't matter what makes the pressure, if its a small
turbo or a large turbo, if the size of the intake to the engine is the same.
If it's 7 psi at the intake it doesn't matter if it's a microscopic or gigantic turbo
creating the pressure.
Of course, what the hell do I know about this
turbo or a large turbo, if the size of the intake to the engine is the same.
If it's 7 psi at the intake it doesn't matter if it's a microscopic or gigantic turbo
creating the pressure.
Of course, what the hell do I know about this
01-13-2005, 04:12 PM
#429
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Originally Posted by 93silverFD
No, the compressor is larger, not the tubing. A larger compressor doesn't have to work as hard to produce pressure equal to a smaller counterpart. A larger compressor would generate a cooler charge at a given boost pressure, this would cause the air to be more dense. Cool air = Dense air, dense air is good. In turn, you get more O2 molecules in the combustion chamber at an equal pressure.
In simple terms, there is more oxygen in a 5psi, 1L sample sample of "air" at 20F than a sample of equal volume and pressure at 30F. Things expand when heated, unless of course we are talking about water. Thats a whole-nother story though, I'll save you my lecture on "Hydrogen Bonding".
In simple terms, there is more oxygen in a 5psi, 1L sample sample of "air" at 20F than a sample of equal volume and pressure at 30F. Things expand when heated, unless of course we are talking about water. Thats a whole-nother story though, I'll save you my lecture on "Hydrogen Bonding".
Wonder if you could make an intercooler which used liquid nitrogen.. hmm..
Follow me here. If 7 psi enters the intercooler and you cool it with liquid nitro,
how much less boost would you have on the other size of the intercooler?
(assuming you were able to cool the air down to lets say 80k).
And what in the world would happen if you had like only 2psi but 10 times as
much O2?..
-- edit --
http://www.nitrousexpress.com/Catalo...ntercooler.pdf
It's allready on the market. I'll be quiet and try not to pretend like I know these
things
Last edited by twospoons_; 01-13-2005 at 04:23 PM.
01-13-2005, 04:43 PM
#430
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so how many people on her actually have turbos in there car now? MAzdamaniac, from your sig before, isnt your car turbo'd? and I love that pom on the turbo:-)
01-13-2005, 05:03 PM
#431
RX-7 Guru
Jon -
Thanks a bunch for sharing the install! It looks awesome. I can't wait to hear the report from driving in the dry.
One quick thing. The "E-manage" sticker on the unit itself is held to the unit with 2 blue adhesive "dots". Remove it, then peel the protective clear plastic from the E-manage logo plate, remove the adhesive backing that's on the back, and stick it on the E-manage. I wish Greddy would have documented this - they did this so you can rotate the logo if you end up mounting it upside down.
Or, leave it like that - it's up to you.
Dale
Thanks a bunch for sharing the install! It looks awesome. I can't wait to hear the report from driving in the dry
.One quick thing. The "E-manage" sticker on the unit itself is held to the unit with 2 blue adhesive "dots". Remove it, then peel the protective clear plastic from the E-manage logo plate, remove the adhesive backing that's on the back, and stick it on the E-manage. I wish Greddy would have documented this - they did this so you can rotate the logo if you end up mounting it upside down.
Or, leave it like that - it's up to you
.Dale
01-13-2005, 05:12 PM
#433
Rangers Lead The Way!
Thread Starter
Originally Posted by dcfc3s
Jon -
Thanks a bunch for sharing the install! It looks awesome. I can't wait to hear the report from driving in the dry.
One quick thing. The "E-manage" sticker on the unit itself is held to the unit with 2 blue adhesive "dots". Remove it, then peel the protective clear plastic from the E-manage logo plate, remove the adhesive backing that's on the back, and stick it on the E-manage. I wish Greddy would have documented this - they did this so you can rotate the logo if you end up mounting it upside down.
Or, leave it like that - it's up to you.
Dale
Thanks a bunch for sharing the install! It looks awesome. I can't wait to hear the report from driving in the dry
.One quick thing. The "E-manage" sticker on the unit itself is held to the unit with 2 blue adhesive "dots". Remove it, then peel the protective clear plastic from the E-manage logo plate, remove the adhesive backing that's on the back, and stick it on the E-manage. I wish Greddy would have documented this - they did this so you can rotate the logo if you end up mounting it upside down.
Or, leave it like that - it's up to you
.Dale
01-13-2005, 05:17 PM
#434
I've been trying to make videos of my setup, but it is still too wet and it is hard to get a sensation of speed in a 320 pixel window.
Plus, it isn't easy to hear the BOV over all of the other noises.
Maybe people just wanna come over and have ride-alongs?
Plus, it isn't easy to hear the BOV over all of the other noises.
Maybe people just wanna come over and have ride-alongs?
01-13-2005, 05:19 PM
#435
Rangers Lead The Way!
Thread Starter
Originally Posted by MazdaManiac
I've been trying to make videos of my setup, but it is still too wet and it is hard to get a sensation of speed in a 320 pixel window.
Plus, it isn't easy to hear the BOV over all of the other noises.
Maybe people just wanna come over and have ride-alongs?
Plus, it isn't easy to hear the BOV over all of the other noises.
Maybe people just wanna come over and have ride-alongs?
01-13-2005, 05:19 PM
#436
Stuck in a love triangle
Originally Posted by QuantumTheory08
...That high pitch sound makes me think of some type of high speed, precision saw/laser weapon/"I don't know what just happened to me" - sliced in half sound.... How beautiful.
This will be what WRX's, and 350Z owners will be thinking, if they can hear it as the 8 leaves them.
Sweet music to my ears!!
Great job.
-jcs-
This will be what WRX's, and 350Z owners will be thinking, if they can hear it as the 8 leaves them.
Sweet music to my ears!!
Great job.
-jcs-
01-13-2005, 05:19 PM
#437
Originally Posted by alphapenguin
so how many people on her actually have turbos in there car now? MAzdamaniac, from your sig before, isnt your car turbo'd? and I love that pom on the turbo:-)
I have turbocharged (or supercharged) every car I have owned since 1987 in addition the cars of friends.
01-13-2005, 05:22 PM
#438
Rangers Lead The Way!
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Originally Posted by bureau13
Surely you wouldn't put the BOV after the MAF? On the FD system its not...well, there was no MAF of course. Still, I would have assumed the BOV would go before the MAF, but I'm no expert. For that matter, where does the MAF go in a system like this?
jds
jds
Also, I started to have some rough idle so I decided to do a little mod to the air filter before the MAF. I disassembled my stock air box and removed the wire mesh screens. I believe these screens are used to "clean" the turbulant air before it goes by the MAF sensor so it can get a good reading. I put these screens right after my air filter and before my MAF sensor.. and boom.. no more idle issues.. I'll edit this post in a little bit to show the pictures.. didn't have my camera with me today when I did it.. going to do it now
01-13-2005, 05:24 PM
#439
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Originally Posted by JeRKy 8 Owner
Itll probably outperform those vehicles but not as well asyou put it. If your Rx8 puts out 180whp prior to installing and you manage to make 60whp w/this kit then that puts you somewhere around 240whp. Just soyou know -a stock 350z makes 244whp (luckily it weighs almost 200 pounds more though). I suppose that for the low cost this kit is worth it but for the Rx8 tobe a real contender (in straight line performance) its goingto be need more boost in my opinion. 8 PSI of boost for an Rx8 sounds much better to me.
we'll see what the whp is after I get it dyno'd.. Also, I just found out that Atco Raceway is still open on Sundays for the general public to do some 1/4's.. So I am going to go this coming sunday and get a few runs in. I'll take pictures of the timeslips and post them here. I'm expecting mid to low 13's.
01-13-2005, 05:32 PM
#440
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Dude, video tape the 1/4 mile runs!!!!!!!! I'm definitley getting one of these!!!! I've got like 2g's put aside. This is the next major mod I'm doing. Damn that's friggen cool!
01-13-2005, 05:36 PM
#441
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Originally Posted by philodox
the BOV must go on the pressure side otherwise it cannot release the back pressure after you let off the throttle.
01-13-2005, 05:40 PM
#442
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Originally Posted by philodox
we'll see what the whp is after I get it dyno'd.. Also, I just found out that Atco Raceway is still open on Sundays for the general public to do some 1/4's.. So I am going to go this coming sunday and get a few runs in. I'll take pictures of the timeslips and post them here. I'm expecting mid to low 13's.
01-13-2005, 05:42 PM
#443
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Originally Posted by philodox
we'll see what the whp is after I get it dyno'd.. Also, I just found out that Atco Raceway is still open on Sundays for the general public to do some 1/4's.. So I am going to go this coming sunday and get a few runs in. I'll take pictures of the timeslips and post them here. I'm expecting mid to low 13's.
If so, we are looking at about 330 hps crank. :D
01-13-2005, 05:48 PM
#444
Registered
Originally Posted by twospoons_
I guestimate 13.2 seconds with a trapspeed of roughly 111mph.
If so, we are looking at about 330 hps crank. :D
If so, we are looking at about 330 hps crank. :D
01-13-2005, 05:55 PM
#446
Registered
Originally Posted by rx8_250f
the bov does not come with the turbo right? also is it needed and does it add hp? It obviously makes a lot of noise.
01-13-2005, 06:09 PM
#447
Registered
A bov is never "needed" but you should use one if you care about less stress on the turbo and longer life out of it. When you don't have a bov and you are on the throttle under boost, when you take your foot off the gas the throttleplate slams shut. The turbo still has compressed air waiting to get through, which it can't. This high pressrue air has nowhere to go but back towards the turbo. This is a sudden direction change in the air and slows the turbo way down very fast. This is extremely hard on it and you don't want this. Is it needed? Nope. Neither is reliability. It's a damn good idea though.
A bov is only loud if you vent it to open air. If you plumb the outlet back into the system after the air filter, you won't hear it. This is how I would prefer to do it. I just don't want people to know what I have. That's just me though.
A bov is only loud if you vent it to open air. If you plumb the outlet back into the system after the air filter, you won't hear it. This is how I would prefer to do it. I just don't want people to know what I have. That's just me though.
01-13-2005, 06:15 PM
#448
Originally Posted by philodox
Also, I started to have some rough idle so I decided to do a little mod to the air filter before the MAF. I disassembled my stock air box and removed the wire mesh screens. I believe these screens are used to "clean" the turbulant air before it goes by the MAF sensor so it can get a good reading. I put these screens right after my air filter and before my MAF sensor.. and boom.. no more idle issues.. I'll edit this post in a little bit to show the pictures.. didn't have my camera with me today when I did it.. going to do it now
I have a screen just before the MAF and another just before the throttle body.
The latter is my "crap stopper" - it is intended to catch anything that might cut loose from the FI setup. Hopefully, it will never have to do that, but if something were to cause the turbo to cough up a piece of the compressor wheel, I'd rather it not go into the motor.
Originally Posted by philodox
we'll see what the whp is after I get it dyno'd.. Also, I just found out that Atco Raceway is still open on Sundays for the general public to do some 1/4's.. So I am going to go this coming sunday and get a few runs in. I'll take pictures of the timeslips and post them here. I'm expecting mid to low 13's.
01-13-2005, 06:42 PM
#450
America West can get you into Philadelphia International. Ticket is about $480 and you should come on Saturday. You leave Portland 5:45am and arrive in Philly at 5:05pm.
Sleep in and on Sunday we hit the track.
Sunday, you fly out 5:55pm and arrive in Portland 12:31am. :D
Sleep in and on Sunday we hit the track.
Sunday, you fly out 5:55pm and arrive in Portland 12:31am. :D