Turbo Efficiency Range for RX-8
02-09-2009, 05:00 PM
#226
Read the thread....
90% of this thread is dedicated to that turbo, for the GReddy kit the problem is packing. There are far better choices for the 8 as far as efficiency is concerned but those turbos just won’t fit down there. The 3071 is one of the "best" choices out there besides some hybrid frankinturbo for the GReddy kit and only the GReddy kit. For those of us who are doing, or have done a top mount, we don't have to use a turbo chosen because it was the best that could be shoved into a small hole. Just actually read the thread, then read it again and if you’re slow like me, read it a third time.
Last edited by WantedTwo; 02-09-2009 at 05:05 PM.
02-09-2009, 07:30 PM
#227
Registered
A better choice than the Greddy turbo is to leave it completely stock. Either that or get another car. Yes the Greddy turbo sucks that bad!!! You couldn't pay me to use it. In fact you couldn't pay me to use the manifold it's mounted on. That thing is a piece of junk too.
02-09-2009, 07:56 PM
#230
not looking for an arguement, lol....we all know the down falls of the greddy kit...but for some, its all they need power wise. With the talks of current upgrades to the greddy unit itself like what Bryan at BNR is doing, looks promising IMO. More added reliability and plenty of power for the street. Especially if it's not a daily driver, the reliability is really not an issue to much. To each their own though, right? 
Last edited by 05rex8; 02-09-2009 at 07:59 PM.
02-09-2009, 08:04 PM
#231
not looking for an arguement, lol....we all know the down falls of the greddy kit...but for some, its all they need power wise. With the talks of current upgrades to the greddy unit itself like what Bryan at BNR is doing, looks promising IMO. More added reliability and plenty of power for the street. Especially if it's not a daily driver, the reliability is really not an issue to much. To each their own though, right?
but for the most part if you read the last 3 pages. rg agrees with what you say now..
but i would not discredit anything rg says. learn from it..
always ways to do something better. read learn, search, learn.
beers
02-09-2009, 08:06 PM
#232
I have met him in person actually at Granite City....a local Brew pub here in Des Moines...and we all know how fond of them he is
02-09-2009, 09:37 PM
#233
Turbocharger Guru
Ultimately I would like to convert the RX8 turbochargers from non water cooled centers to water cooled centers. This would cure the coaking problems they continuously have. It will take some work and maybe production of a custom bearing housing, but if there is enough of a market out there, I am willing to invest time and money developing a cure for the limited Greddy unit.
Bryan@BNR
205 640 1193
Bryan@BNR
205 640 1193
02-09-2009, 10:09 PM
#234
Ultimately I would like to convert the RX8 turbochargers from non water cooled centers to water cooled centers. This would cure the coaking problems they continuously have. It will take some work and maybe production of a custom bearing housing, but if there is enough of a market out there, I am willing to invest time and money developing a cure for the limited Greddy unit.
Bryan@BNR
205 640 1193
Bryan@BNR
205 640 1193
02-09-2009, 11:31 PM
#240
whoever said a .70 A/R 60-1... I thought you meant the compressor housing, which is a standard size and has a 4" inlet usually. You can't get a .70 A/R T4 turbine housing normally. It is usually .63, .82, or .96 (larger ones are available though) if undivided. I ran the .96 undivided on my car.
Last edited by arghx7; 02-09-2009 at 11:33 PM.
02-10-2009, 01:35 PM
#241
Registered
I take that back. The Profec B boost controller and their turbo timer are useful. Everything else in their entire line needs to be scrapped and written off.
02-10-2009, 02:03 PM
#242
Ok, I got clarification on the turbo, and this is what I'm looking at in it's entirety.
60-1 compressor wheel, .60AR compressor housing, P-trim turbine, .70AR turbine housing, water cooled, ball bearing
Now, correct me if I'm wrong, but aren’t all 60-1 series a .60AR compressor? So, in which case from what Jeff has said, the .7 is too small on the hot side. From the .68 it goes to .81 and then to a .96. I'm thinking the .96 isn't what I'm looking for so I'm eyeballing the .81. Please advise.
60-1 compressor wheel, .60AR compressor housing, P-trim turbine, .70AR turbine housing, water cooled, ball bearing
Now, correct me if I'm wrong, but aren’t all 60-1 series a .60AR compressor? So, in which case from what Jeff has said, the .7 is too small on the hot side. From the .68 it goes to .81 and then to a .96. I'm thinking the .96 isn't what I'm looking for so I'm eyeballing the .81. Please advise.
Last edited by WantedTwo; 02-10-2009 at 02:10 PM.
02-10-2009, 02:56 PM
#243
I take no offense whatsoever. I think by now you know I'm pretty opinionated! I have such a deep seeded hatred for the cheap poorly designed crap that Greddy builds and markets on poor souls that if a small gain is all you want, I'd rather find another way to get it. A large sail and a nice tailwind come to mind. Anything but to have to associate Greddy with the car. Greddy is a company that really needs to go under as their usefullness on this planet has run out.
I take that back. The Profec B boost controller and their turbo timer are useful. Everything else in their entire line needs to be scrapped and written off.
I take that back. The Profec B boost controller and their turbo timer are useful. Everything else in their entire line needs to be scrapped and written off.
Perhaps one of their staff shot your mother or something ?
02-10-2009, 03:56 PM
#244
.I can help answer that, the initial kit that was released is lacking in so many areas, that you spend so much time trying to make it drivable. Here is a list just off the top of my head
Turbo - Nuff said
manifold - Known to crack
BOV - oh that’s right it doesn't have one nor has a spot for one
Waste Gate - ineffective at high RPM
Emanage - pure garbage especially the blue
couplers - known to tear, crack, and pop
air filter - well, it will keep rocks out
The way I look at it, if I have to replace or fix 90% of something it qualifies as a POS. I'm not talking out of my *** either, I was one of the early Greddy owners and I paid the price just like so many others. The biggest problem with the kit is it's up front cost is cheap enough to blind people from seeing its flaws.
Turbo - Nuff said
manifold - Known to crack
BOV - oh that’s right it doesn't have one nor has a spot for one
Waste Gate - ineffective at high RPM
Emanage - pure garbage especially the blue
couplers - known to tear, crack, and pop
air filter - well, it will keep rocks out
The way I look at it, if I have to replace or fix 90% of something it qualifies as a POS. I'm not talking out of my *** either, I was one of the early Greddy owners and I paid the price just like so many others. The biggest problem with the kit is it's up front cost is cheap enough to blind people from seeing its flaws.
Last edited by WantedTwo; 02-10-2009 at 03:58 PM.
02-10-2009, 04:01 PM
#245
Registered
A piece of junk is a piece of junk regardless of how well it sells or whose name is on it. Just holding the individual components in your hand and looking at them should tell you that they don't belong on an engine. At least not on a rotary. Maybe something small like a Honda motor. I don't need to justify my opinion on it to anyone. Not even Greddy. As far as I'm concerned Greddy needs to justify this crap to everyone else because for the life of me I can't find more than about 10 minutes worth of actual engineering in their kit. It was as if someone said let's throw these things that we already have into a kit, put a price on it, and sell it. Oh yeah lets quickly cast up a little manifold to improvise this **** into place. Viola! A Greddy turbo kit!
02-10-2009, 04:24 PM
#246
I don't need to justify my opinion either - but i will cuz it's fun on the internetz .
Ok - it has most of those flaws that all and sundry have noted . Fix those and you still have a cheap kit that does a lot for the renesis . The only real issue i have with the (upgraded in my case) turbo is that i don't expect it to last more than 20,000 miles . I'm actually ok with that as i knew it going in .
Ok - it has most of those flaws that all and sundry have noted . Fix those and you still have a cheap kit that does a lot for the renesis . The only real issue i have with the (upgraded in my case) turbo is that i don't expect it to last more than 20,000 miles . I'm actually ok with that as i knew it going in .
02-10-2009, 04:24 PM
#247
What kind of manifold is a good design? I want to go FI, I definitely don't want to put any garbage on my car. Is a tubular manifold more suitable? Is it the location, would a top mount location be better. Sorry for the newbish questions, I just don't know where to learn more.
02-10-2009, 04:42 PM
#248
It is opinion based really, Mazsport made a good kit, PTP makes a good kit, but my opinion is SFR makes the best kit. They use 321SS for the mani and all of the parts are quality, however the cost is considerably more but you get what you pay for. Go with a top mount, there just isn't enough room down below for the properly sized turbo, which is what this thread is about.
02-10-2009, 05:04 PM
#249
I understand, I want a top mount kit more than the Greddy simply cause I don't much like the iwg design, it doesn't seem to control boost as well as ewg, and the fact that I can put whatever I want/need in there without worry of packaging. I don't know for sure though, that why I've been reading this thread.
/back to reading.
/back to reading.
02-10-2009, 05:38 PM
#250
.I can help answer that, the initial kit that was released is lacking in so many areas, that you spend so much time trying to make it drivable. Here is a list just off the top of my head
Turbo - Nuff said
manifold - Known to crack
BOV - oh that’s right it doesn't have one nor has a spot for one
Waste Gate - ineffective at high RPM
Emanage - pure garbage especially the blue
couplers - known to tear, crack, and pop
air filter - well, it will keep rocks out
The way I look at it, if I have to replace or fix 90% of something it qualifies as a POS. I'm not talking out of my *** either, I was one of the early Greddy owners and I paid the price just like so many others. The biggest problem with the kit is it's up front cost is cheap enough to blind people from seeing its flaws.
Turbo - Nuff said
manifold - Known to crack
BOV - oh that’s right it doesn't have one nor has a spot for one
Waste Gate - ineffective at high RPM
Emanage - pure garbage especially the blue
couplers - known to tear, crack, and pop
air filter - well, it will keep rocks out
The way I look at it, if I have to replace or fix 90% of something it qualifies as a POS. I'm not talking out of my *** either, I was one of the early Greddy owners and I paid the price just like so many others. The biggest problem with the kit is it's up front cost is cheap enough to blind people from seeing its flaws.
Now if I paid full price for this kit, I suppose I wouldn't be too happy right now....but I knew better not to do that, lol.
So in conclusion, if you can find this kit used, it as a decent, cheap way to go FI. Sure you will need to upgrade a few parts, but that's the fun of it, right?