NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   Single Turbo Discussion (https://www.nopistons.com/single-turbo-discussion-13/)
-   -   2 Big Single's? (https://www.nopistons.com/single-turbo-discussion-13/2-big-singles-39127/)

Dysfnctnl85 05-26-2004 09:26 PM

Either way Srce, this is a TON of money for minimal gain and street usage, IMO.

jspecracer7 05-27-2004 02:09 AM


Originally Posted by Dysfnctnl85' date='May 27 2004, 11:26 AM
Either way Srce, this is a TON of money for minimal gain and street usage, IMO.

you know with IGY's setup he was boosting 8 psi...let me say it again...<span style='font-size:21pt;line-height:100%'>8 PSI</span> and was making over 400 rwhp.



How in the HELL is that minimal? His wastegate would barely open in 1st Gear!

Srce 05-27-2004 02:12 AM


Originally Posted by djgiantrobot' date='May 26 2004, 02:45 PM
umm, yeah you would be more power, not much more power would be like twin GT25s. Piston guys see well over 400-450 hp on this turbo SINGLE. Two of them, although a bit lower output on a rotary is still capable of like 700hp. i really hope that you've considered what **** is going to break with that much power. Its not like you can just build it once and not have to keep putting money into it.

I don't know about 700, I was thinking more like 500 for street usage, it's not like I have to turn the boost up to 1.5 kilo's for street use.



So, I missed needing one more wastegate, how much would a custom twin manifold cost? Does anyone know, and I don't plan on drag racing the car. This thing will get most pulls on the highway and road course.

FikseRxSeven 05-27-2004 02:27 AM


Originally Posted by Srce' date='May 26 2004, 02:17 PM
Hmm, I was thinking more like 5K. Turbo's are $2,500, a big ass IC core at about 700 including piping, and the rest would suffice for a manifold, dp, fuel, and wastegate? No?



Plus, why would I need a new drivetrain every week LOL? It's not like I'll be making more power then any of the single turbo guys.

ill tell you from experience, unless you are making the kit with your own hands....... personal calculations are always...... ALWAYS!!..... a lot lower than the actual cost of everything. you have to put into consideration evertying else that comes with it, labor would be a great deal of money, specially since that will be mostly custom. (custom fabrication = lots of mutha ****** money) you also have to put into consideration everything else that you will need to run that setup ex. real big wastegate, bov, intercooler, ECU, lots of fuel,....... soon after you get that car running, you better have upgraded rims and tires cuz there's no way you're not gunna die within a week with stock rims, transmission and differential braces, the axels you're gunna snap..............





yeah you're gunna need way more than 5k to get this goin





i know this first hand cuz im goin through this whole upgrade ****, and im getting great prices on everything i get, and sean is helping me out a lot with the labor and with all parts already fabricated, im spending more than twice of your projected amount.

Srce 05-27-2004 02:35 AM

I hear ya Martin. This is a long way from now, I'm hoping to jump into a car by Rotorfest, go stand alone right away, rims, and basic bolt-ons and reliability mods. Hoping to be GT30/37ed over winter.

jspecracer7 05-27-2004 02:38 AM

wahwahwah...bunch of babies you guys are. Ask IGY how much all that cost him...wahwahwah

FikseRxSeven 05-27-2004 02:40 AM

well as long as you're prepared to spend on your wet dream..... hehe j/k







oh yeah.... dont forget about your engine, cant slap that on a stock engine, you wont see boost til tomorrow morning....... hmmm slap on another 5k for ito to build you something that will spool that **** up and handle that much power

FikseRxSeven 05-27-2004 02:44 AM


Originally Posted by jspecracer7' date='May 27 2004, 02:38 AM
wahwahwah...bunch of babies you guys are. Ask IGY how much all that cost him...wahwahwah

van, not everyone has their own shop and has the knowhow that igy has to fabricate things, and fabricate them the right way. and can also afford to take apart his engine if something in his experiment doesnt work right...... well i guess that goes for you too..... hehe, not just igy

Dramon_Killer 05-27-2004 02:46 AM


Originally Posted by Srce' date='May 26 2004, 11:12 PM
Does anyone know, and I don't plan on drag racing the car. This thing will get most pulls on the highway and road course.

From what everyone has said, it sounds a lot like a drag racing setup. And i'm not sure how well that much power with that kind of powerband would really work on a road course.



You say you like to plan things out before you do them which is good. But what are your goals for this car?

Srce 05-27-2004 02:59 AM

My goals? Hmm, road racing, occasional drag run, and highway driving. BTW, just to make this a bit more impossible, this car will be my daily driver. https://www.nopistons.com/forums/pub...1047683785.gif

FikseRxSeven 05-27-2004 03:01 AM


Originally Posted by Srce' date='May 27 2004, 02:59 AM
My goals? Hmm, road racing, occasional drag run, and highway driving. BTW, just to make this a bit more impossible, this car will be my daily driver. https://www.nopistons.com/forums/pub...1047683785.gif

hehehe, ill try out 500hp at the wheels as a daily driver, and tell you all about it before you go doin this setup.... hehe

Srce 05-27-2004 03:16 AM


Originally Posted by FikseRxSeven' date='May 27 2004, 03:01 AM
hehehe, ill try out 500hp at the wheels as a daily driver, and tell you all about it before you go doin this setup.... hehe

Good ****. https://www.nopistons.com/forums/pub...IR#>/bigok.gif

j9fd3s 05-27-2004 08:59 AM

you cant really use that kinda power roadracing, unless you're a really good driver and even then.....



that being said

j9fd3s 05-27-2004 09:00 AM

i believe those were gt3035's but i'm not sure. the guy really hasnt gotten the car running yet either

FikseRxSeven 05-29-2004 01:59 AM

is that guy seriously putting those turbos in that engine bay?

Dysfnctnl85 05-29-2004 09:40 AM


Originally Posted by j9fd3s' date='May 27 2004, 10:00 AM
i believe those were gt3035's but i'm not sure. the guy really hasnt gotten the car running yet either

I can take a guess as to why he hasn't gotten the thing running.

Dysfnctnl85 05-29-2004 09:42 AM


Originally Posted by jspecracer7' date='May 27 2004, 03:09 AM
you know with IGY's setup he was boosting 8 psi...let me say it again...<span style='font-size:21pt;line-height:100%'>8 PSI</span> and was making over 400 rwhp.



How in the HELL is that minimal? His wastegate would barely open in 1st Gear!

You can make 400HP on a single for a lot cheaper than his proposed twin setup. That was my point. https://www.nopistons.com/forums/pub..._DIR#>/sad.png

j9fd3s 05-29-2004 11:21 AM


Originally Posted by FikseRxSeven' date='May 28 2004, 10:59 PM
is that guy seriously putting those turbos in that engine bay?

yep they were there for sevenstock 2 years ago, they painted the car soon after those pics were taken.

jspecracer7 05-29-2004 11:51 PM


Originally Posted by Dysfnctnl85' date='May 29 2004, 11:42 PM
You can make 400HP on a single for a lot cheaper than his proposed twin setup. That was my point. https://www.nopistons.com/forums/pub..._DIR#>/sad.png

But Scre isn't going for "only" 400 rwhp or the "cheap" route. He's doing it to be different and make lots of HP...plus bragging rights of having a very unique setup.

FikseRxSeven 05-30-2004 12:08 AM


Originally Posted by jspecracer7' date='May 29 2004, 11:51 PM
But Scre isn't going for "only" 400 rwhp or the "cheap" route. He's doing it to be different and make lots of HP...plus bragging rights of having a very unique setup.

yup very unique...... turbo setup without a car

Dysfnctnl85 05-30-2004 09:24 AM


Originally Posted by jspecracer7' date='May 30 2004, 12:51 AM
But Scre isn't going for "only" 400 rwhp or the "cheap" route. He's doing it to be different and make lots of HP...plus bragging rights of having a very unique setup.

Unique and unreliable.



Hey if he wants it, more power to him. https://www.nopistons.com/forums/pub...IR#>/smile.png

rdavidsrx7 05-30-2004 03:40 PM

srce,

have you talked to Howard Coleman about his setup? His name may have been mentioned early on in this thread, but what was stated was not up to date. He is trying out a twin t-04s setup right now and is just now breaking in the motor. He told me that he saw 5 psi of boost however by 2100 rpm. He has been working with majestic turbo, and I can't wait till his engine is broken in and then tuned so we can see what he gets out of that setup.



Bob

jspecracer7 05-30-2004 08:02 PM


Originally Posted by Dysfnctnl85' date='May 30 2004, 11:24 PM
Unique and unreliable.



Hey if he wants it, more power to him. https://www.nopistons.com/forums/pub...IR#>/smile.png

Explain to me How it's UNRELIABLE? What exactly makes it UNRELIABLE? Parts will break REGARDLESS of how many turbos you strap to the engine....500+ hp tends to do that. If anything, the engine will be MORE reliable. Remember I said IGY had 400~ hp at 8 psi...most single T-04S cars were making 400~ hp at 14 psi....so He does NOT have to run more boost because he has more air flow.

Dysfnctnl85 05-30-2004 09:22 PM


Originally Posted by jspecracer7' date='May 30 2004, 09:02 PM
Explain to me How it's UNRELIABLE? What exactly makes it UNRELIABLE? Parts will break REGARDLESS of how many turbos you strap to the engine....500+ hp tends to do that. If anything, the engine will be MORE reliable. Remember I said IGY had 400~ hp at 8 psi...most single T-04S cars were making 400~ hp at 14 psi....so He does NOT have to run more boost because he has more air flow.

Chill, I'm not trying to start a war. https://www.nopistons.com/forums/pub...IR#>/smile.png



The amount of boost doesn't really have much to do with reliablity in my mind, it all comes to how much air you're flowing, so you can't really base reliability on the amount of boost someone is running...



For instance...a Y2K running 6psi is going to flow a lot more air than a T28 at 6psi. So, you could make the observation that the Y2K will cause the motor to be more unreliable simply because of the amount of air it is supplying to the motor.



Look, I'm no expert, it's not a secret. I'm just trying to make common sense out of "reliability" and "2 big singles" describing the same motor, let alone being in the same sentence.

jspecracer7 05-30-2004 09:26 PM


Originally Posted by Dysfnctnl85' date='May 31 2004, 11:22 AM
Chill, I'm not trying to start a war. https://www.nopistons.com/forums/pub...IR#>/smile.png



The amount of boost doesn't really have much to do with reliablity in my mind, it all comes to how much air you're flowing, so you can't really base reliability on the amount of boost someone is running...



For instance...a Y2K running 6psi is going to flow a lot more air than a T28 at 6psi. So, you could make the observation that the Y2K will cause the motor to be more unreliable simply because of the amount of air it is supplying to the motor.



Look, I'm no expert, it's not a secret. I'm just trying to make common sense out of "reliability" and "2 big singles" describing the same motor, let alone being in the same sentence.

Your confusing yourself too much young Padawan. Yes airflow is what makes HP. However, how many engine failures do you know are from LOW boost? With high boost engine's(19 psi+) tuning becomes CRITICAL. Low boost...they'll run forever. So he'll have the best of both worlds...Low boost and high air flow. Downside is COST and COMPLEXITY. https://www.nopistons.com/forums/pub...IR#>/smile.png

Dysfnctnl85 05-30-2004 09:28 PM


Originally Posted by jspecracer7' date='May 30 2004, 10:26 PM
Your confusing yourself too much young Padawan. Yes airflow is what makes HP. However, how many engine failures do you know are from LOW boost? With high boost engine's(19 psi+) tuning becomes CRITICAL. Low boost...they'll run forever. So he'll have the best of both worlds...Low boost and high air flow. Downside is COST and COMPLEXITY. https://www.nopistons.com/forums/pub...IR#>/smile.png

Padawan, LOL.



See conceptually to me that doesn't make sense. Wouldn't it have more to do with the sheer volume of air you are forcing into the engine?

jspecracer7 05-30-2004 09:31 PM


Originally Posted by Dysfnctnl85' date='May 31 2004, 11:28 AM
Padawan, LOL.



See conceptually to me that doesn't make sense. Wouldn't it have more to do with the sheer volume of air you are forcing into the engine?

No https://www.nopistons.com/forums/pub...IR#>/smile.png

Dysfnctnl85 05-30-2004 09:32 PM


Originally Posted by jspecracer7' date='May 30 2004, 10:31 PM

Okay, well explain to me why.



Why would an engine blow simply because someone was running 18psi on something like a t-28, when that same volume of air could be made from a T-66 at 8psi? I don't understand the difference...why would the motor blow if it is receiving the same amount of air, but with a more efficient turbo?

jspecracer7 05-30-2004 10:53 PM

COMPRESSION RATIO.

Dysfnctnl85 05-31-2004 12:22 PM


Originally Posted by jspecracer7' date='May 30 2004, 11:53 PM
COMPRESSION RATIO.

https://www.nopistons.com/forums/pub...1047683561.gif

Dramon_Killer 05-31-2004 02:20 PM


Originally Posted by jspecracer7' date='May 30 2004, 06:26 PM

On that same thought though i'm probably wrong but wouldn't the whole complexity thing in turn make it less reliable? I suppose it would be different if you did your own twin turbo setup, but mazda kinda ruined it for me with the their version of the twin turbo system on 3rd gens.

Srce 05-31-2004 02:48 PM


Originally Posted by rdavidsrx7' date='May 30 2004, 03:40 PM
srce,

have you talked to Howard Coleman about his setup? His name may have been mentioned early on in this thread, but what was stated was not up to date. He is trying out a twin t-04s setup right now and is just now breaking in the motor. He told me that he saw 5 psi of boost however by 2100 rpm. He has been working with majestic turbo, and I can't wait till his engine is broken in and then tuned so we can see what he gets out of that setup.



Bob

Sorry, I don't even know who he is. When did he start his project and where can I get more details?



Thanks

Dysfnctnl85 05-31-2004 02:54 PM


Originally Posted by Dramon_Killer' date='May 31 2004, 03:20 PM
On that same thought though i'm probably wrong but wouldn't the whole complexity thing in turn make it less reliable? I suppose it would be different if you did your own twin turbo setup, but mazda kinda ruined it for me with the their version of the twin turbo system on 3rd gens.

That's what I was trying to say. https://www.nopistons.com/forums/pub..._DIR#>/sad.png

93 R1 05-31-2004 04:01 PM


Originally Posted by FikseRxSeven' date='May 30 2004, 12:08 AM
yup very unique...... turbo setup without a car

Now thats funny

j9fd3s 05-31-2004 04:03 PM

theoretically more power = higher combustion pressure, so a 400hp 13b should have a certain amount of combustion pressure, we'll call it bo. when you compress air it gets hotter; hotter = more prone to detonation. we'll call that luke.

and we'll call airflow daisy duke.



so



the less luke you have the more daisy duke you can have for the same bo!



or airflow isnt the reliabilty problem its heat, or heat induced detonation



detonation is somewhere along the lines of 10x more pressure (plus a shockwave) than normal combustion, this is why it does so much damage

93 R1 05-31-2004 05:10 PM

nice analogy

jspecracer7 05-31-2004 05:13 PM

I think what Mikeypoo is trying to say is that higher compression(more boost) will raise the intake temperature higher and thus increase the chances of detonation. When a turbo is in it's effeciency range(and below) the air it blows into the engine will be of a lower temperature than a high boost turbo.



Did I get Daisy, Sally, Jessie, Bo and Luke right? https://www.nopistons.com/forums/pub...1047683561.gif

Dysfnctnl85 05-31-2004 06:04 PM


Originally Posted by j9fd3s' date='May 31 2004, 05:03 PM
theoretically more power = higher combustion pressure, so a 400hp 13b should have a certain amount of combustion pressure, we'll call it bo. when you compress air it gets hotter; hotter = more prone to detonation. we'll call that luke.

and we'll call airflow daisy duke.



so



the less luke you have the more daisy duke you can have for the same bo!



or airflow isnt the reliabilty problem its heat, or heat induced detonation



detonation is somewhere along the lines of 10x more pressure (plus a shockwave) than normal combustion, this is why it does so much damage

Thank you. It all makes sense! https://www.nopistons.com/forums/pub...IR#>/bigok.gif

j9fd3s 05-31-2004 07:36 PM


Originally Posted by 93 R1' date='May 31 2004, 02:10 PM
nice analogy

i could have used x, and y but thats no fun

rdavidsrx7 05-31-2004 07:56 PM


Originally Posted by Srce' date='May 31 2004, 11:48 AM
Sorry, I don't even know who he is. When did he start his project and where can I get more details?



Thanks

he is on the other forum...not sure if he is on nopistons at all. Not sure when he started this project. I know he has been working closely with kevin at majestic turbos though. Look him up his screen name is howard_coleman, so it's pretty easy to remember. The have been doin stuff like machining wight off the bolt that holds on the exhaust turbine, and putting a bullet shaped nut on to hold on the compressor wheel for increased flow. Also I think much work went into the manifold design. PM him though he would have better details than I, obviously.



Later



Bob


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