The Rotary Extreme regular V mount is also featured in the same issue on another drift FD. It's pretty nice to get free exposure without paying a dime. https://www.nopistons.com/forums/pub...IR#>/smile.png



Chuck Huang

For this Turbo, I need 1200CFM+, I need a 4" core, 3" piping in and 4" piping out, I prefer vertical fins, needs to be setup for NO battery (remote battery), NO Y-pipe (single turbo), and NO intake. It would be nice if the sucker were as wide as possible, across the area where the intakes and battery goes.



Horizontal fins

[---------------]

[---------------]



Vertical fins

[|||||||||||||||]

[|||||||||||||||]



Yes, this of course means that the end tanks on the top and bottom rather the sides.

Tony:



If you want the top and bottom end tank, the core size will be greatly reduced and you won't be able to find a core that flows 1200cfm in that configuration.



The maximum length from top and bottom is 12". So if you want a 3" inlet pipe and a 4" outlet pipe, that will only leave you with 5" of core. You also need some space on the end tank to weld the pipe so that will leave you with a 4" core. I don't think any company makes that size and flows 1200 cfm.



Spearco does have a core that's 24" wide so you will need to relocate the battery to the back. Unfortunately, that core does not flow as much as the core I am using. The core I am using is the second highest flowing core made by Spearco. The highest one flows 1500 cfm but it's too tall.



I don't think a 4" outlet pipe will be a good idea. You will lose a lot of air velocity. Besides that, I can't find a place to mandrel bend 4" pipes.



What turbo are you using that requires 1200 cfm and 4" outlet?



Chuck Huang

I am working on a monster v mount II using a 1400 cfm core enough to support 900 HP. The core measures 11"x19.5"x4.5". There is no way you can out flow this one and best of all, I am keeping it at the same price. https://www.nopistons.com/forums/pub...IR#>/smile.png



Chuck Huang [/quote]

Chuck,



Do you think that the GT40R would outflow your original Monster V-mount setup at 20-22psi?? I thought that it would be more than sufficient. If not then please let me know. I do love the way your V-mount setup looks in the car though. I just can't decide between the mini battery and a battery relocation. But kudo's to you for your work with the FD!! Your products kick ass!! I have seen a few of them in person on people's cars and they are just as good in person as they look on the website. I'll be buying tons from you as well as A-Spec. Actually you two combined are going to get my next 2 years worth of paychecks pretty much!! Anybody up for a package deal for a hard working Air Force mechanic?? https://www.nopistons.com/forums/pub...1047683894.gif Laterz.



Zach

Tony:



If you want the top and bottom end tank, the core size will be greatly reduced and you won't be able to find a core that flows 1200cfm in that configuration.



The maximum length from top and bottom is 12". So if you want a 3" inlet pipe and a 4" outlet pipe, that will only leave you with 5" of core. You also need some space on the end tank to weld the pipe so that will leave you with a 4" core. I don't think any company makes that size and flows 1200 cfm.



Spearco does have a core that's 24" wide so you will need to relocate the battery to the back. Unfortunately, that core does not flow as much as the core I am using. The core I am using is the second highest flowing core made by Spearco. The highest one flows 1500 cfm but it's too tall.



I don't think a 4" outlet pipe will be a good idea. You will lose a lot of air velocity. Besides that, I can't find a place to mandrel bend 4" pipes.



What turbo are you using that requires 1200 cfm and 4" outlet?



Chuck Huang [/quote]

Chuck,



The one in the thread.



http://home.columbus.rr.com/dv8/GT40R_MAP.JPG



Notice that 75% of this thread is Zach's sig?

Okay, Chuck. How about 3" in and out?



So, the max is 12" of vertical space. What is the width of the large/hiflo core you're getting? Then add end tanks? How much wider than the current one on your site?



How about a group buy price with under 100% profit, too? https://www.nopistons.com/forums/pub...DIR#>/wink.png

Chuck you can't find anybody to bend 4" that's too bad for you, maybe we can work something out like you stay off my thread and I'll bend your 4" pipe https://www.nopistons.com/forums/pub...#>/biggrin.png



Tony 4" out wouldn't be that good of a idea you will lose velocity, you are right though in wanting a vertical setup instead of a horizantal one,Tube length is one of the biggest considerations, a tube twice as long as another will have nearly twice the drag at the same velocity. Entry and density also matter to a degree.The most ideal configuration is position the core to offer the shortest length tube and the most number of tubes. This would optimize core area but the way you would like and what you can do sometimes don't agree.



-Sean

Very funny Tony!! I have to advertise the TII. After all it is for sale.

I am working on a monster v mount II using a 1400 cfm core enough to support 900 HP. The core measures 11"x19.5"x4.5". There is no way you can out flow this one and best of all, I am keeping it at the same price. https://www.nopistons.com/forums/pub...IR#>/smile.png



Chuck Huang [/quote]

Chuck,



Do you think that the GT40R would outflow your original Monster V-mount setup at 20-22psi?? I thought that it would be more than sufficient. If not then please let me know. I do love the way your V-mount setup looks in the car though. I just can't decide between the mini battery and a battery relocation. But kudo's to you for your work with the FD!! Your products kick ass!! I have seen a few of them in person on people's cars and they are just as good in person as they look on the website. I'll be buying tons from you as well as A-Spec. Actually you two combined are going to get my next 2 years worth of paychecks pretty much!! Anybody up for a package deal for a hard working Air Force mechanic?? https://www.nopistons.com/forums/pub...1047683894.gif Laterz.



Zach [/quote]

Zach:



There is no way you can outflow the core with that turbo. Right now I am making 3 of them all for the HKS T51R Kai which flows 80 lb/min.



Let's do a little match.



The new core I use is 19.5" wide, 11" tall, and 4.5" thick. It flows 1400 CFM at 15 psi which is about 2 ATM.



1400 CFM stands for 1400 ft3/min = 37.8 m3/min (cubic meter / min)



The dry air density at ATM is 1.22 kg/m3 so at 2 atm, it is 2.44 kg/m3



You take the CFM and multiply the air density at 15 psi will be



37.8 m3/min x 2.44 kg/m3 = 92.23 kg/min = 203 lb/min



So with the calculation, it shows the core can flow 203 lb/min at 15 psi. I doubt your turbo can flow that much. https://www.nopistons.com/forums/pub...IR#>/smile.png



Chuck Huang

Tony:



If you want the top and bottom end tank, the core size will be greatly reduced and you won't be able to find a core that flows 1200cfm in that configuration.



The maximum length from top and bottom is 12". So if you want a 3" inlet pipe and a 4" outlet pipe, that will only leave you with 5" of core. You also need some space on the end tank to weld the pipe so that will leave you with a 4" core. I don't think any company makes that size and flows 1200 cfm.



Spearco does have a core that's 24" wide so you will need to relocate the battery to the back. Unfortunately, that core does not flow as much as the core I am using. The core I am using is the second highest flowing core made by Spearco. The highest one flows 1500 cfm but it's too tall.



I don't think a 4" outlet pipe will be a good idea. You will lose a lot of air velocity. Besides that, I can't find a place to mandrel bend 4" pipes.



What turbo are you using that requires 1200 cfm and 4" outlet?



Chuck Huang [/quote]

Chuck,



The one in the thread.



http://home.columbus.rr.com/dv8/GT40R_MAP.JPG



Notice that 75% of this thread is Zach's sig? [/quote]

It will be way more than enough for your turbo. See the calculation I did for Zach. https://www.nopistons.com/forums/pub...IR#>/smile.png



3" inlet and 3 " outlet is more than enough. Even if you use a 4" outlet but your throttle body is not 4", it's going to create turburlance. You ended up losing air velocity. I know it looks cool but things have to match.



The width of the core is 19.5" and with end tanks, the total width is 26.5"-27".



http://www.rotaryextreme.com/monstervmount-1.jpg



Group buy price is possible if we can get 4+ buyers.



Chuck Huang

Alright man, I will leave your thread alone. https://www.nopistons.com/forums/pub...#>/biggrin.png



If any of you have questions on the vmount, you can just email me at rotaryextreme@aol.com or you can post on the forum under the 3rd gen section.



BTW, if you are worry about pressure drop, I have the intercooler flow map that shows pressure drop diagram and efficiency. With this core, the pressure drop on a 13B will be less than 0.5 psi. This thing is recommended for a 7.6-8.5L engine. haha



Chuck Huang

Yeah, I don't think that I'll have to worry about outflowing Chuck's Monster V-mount setup!! That is good news!



Sean, will you be able to supply the IC pipes for the GT40R kit as well?? Or at least recommend a good place to pick up ones that I will need?



Zach

I dunno, Zach. Basic rule of thumb is 1.92 CFM per a RWHP. I would like to PLAN on 600, so its close to 1200 CFM. That is ~ what the IC core is rated as. I like more margin.

I dunno, Zach. Basic rule of thumb is 1.92 CFM per a RWHP. I would like to PLAN on 600, so its close to 1200 CFM. That is ~ what the IC core is rated as. I like more margin. [/quote]

Tony:



CFM does not indicate how much air is going into the motor. You have to account for the air density.



A engine's CFM rating is fixed but the higher boost you run, the more power you are going to make because the air density is higher at higher boost.



Beside that, the new core is rated at 1400 CFM, not 1200 CFM.



Chuck Huang

I dunno, Zach. Basic rule of thumb is 1.92 CFM per a RWHP. I would like to PLAN on 600, so its close to 1200 CFM. That is ~ what the IC core is rated as. I like more margin. [/quote]

Tony:



CFM does not indicate how much air is going into the motor. You have to account for the air density.



A engine's CFM rating is fixed but the higher boost you run, the more power you are going to make because the air density is higher at higher boost.



Beside that, the new core is rated at 1400 CFM, not 1200 CFM.



Chuck Huang [/quote]

You're preaching the the choir, Chuck. Air Density is THE thing I am worried about.



We all have benchmarks, gut-checks, reference points, sayings, that we use. Mine is 1.92cfm per a RWHP. Granted, this goes back to the days of getting small block V-8's into the low double digits, probably before you were born (me thinks). But I use it.



We can take it to the other extreme (Four Gas Law) and calculate it out. The net, is, what are it's dimensions, it's surface area, pressure drop, or better yet, it's graph showing all the pertinent details at once? That would be nice. Like this:



http://flathat.woodstream.net/ColumbusRacing/12x22.jpg

Ok, I'm back from the dead now. Near dead anyway, being sick sucks!! So, any updates from Sean or anyone else that may have pertinent info on this subject??



Zach

I will add this for you, I am stuck waiting for some clamps so I'm kinda idle right now but they should be here any day.



-Sean

I dunno, Zach. Basic rule of thumb is 1.92 CFM per a RWHP. I would like to PLAN on 600, so its close to 1200 CFM. That is ~ what the IC core is rated as. I like more margin. [/quote]

Tony:



CFM does not indicate how much air is going into the motor. You have to account for the air density.



A engine's CFM rating is fixed but the higher boost you run, the more power you are going to make because the air density is higher at higher boost.



Beside that, the new core is rated at 1400 CFM, not 1200 CFM.



Chuck Huang [/quote]

You're preaching the the choir, Chuck. Air Density is THE thing I am worried about.



We all have benchmarks, gut-checks, reference points, sayings, that we use. Mine is 1.92cfm per a RWHP. Granted, this goes back to the days of getting small block V-8's into the low double digits, probably before you were born (me thinks). But I use it.



We can take it to the other extreme (Four Gas Law) and calculate it out. The net, is, what are it's dimensions, it's surface area, pressure drop, or better yet, it's graph showing all the pertinent details at once? That would be nice. Like this:



http://flathat.woodstream.net/ColumbusRacing/12x22.jpg [/quote]

The dimension of the core is 19.5" (width) x11" (height) x4.5" (thickness)



Flow Rate is 1400 CFM at 15 psi. All those are given by Spearco.



The flowchart is here



http://www.rotaryextreme.com/flowchart.jpg



Chuck Huang

Thanks for the info, Chuck!



That the right chart?

chuck dont **** around..... of course its the right one

Hey, bro-who-has-the-same-kick-butt-wheels-as me! How you know? I thought since it don't show up to 1500CFM it might be the wrong one. Or didn't you look at it? No mention of the model/core size on the pic. Just thought it was a mistake. Maybe I made I mistake. Maybe Chuck did. Maybe you did. Mistakes happen. Like some posts that go off half cocked. https://www.nopistons.com/forums/pub...DIR#>/wink.png

I think flow is only one of the things in this puzzle that needs to be considered I could care less if it could flow 2500cfm if it can't cool down the charge air effectively it wouldn't mean diddly end tank design has alot to do with pressure drop as well. I would almost be more concerned with eff#'s than flow#'s.



-Sean

I think that the cooling efforts of the V-Mount are going to be just fine. Going by what I have seen from other V-Mount setups using similar parts, they work great. Plus Spearco cores are always a safe bet. Sean, sorry to hear that you are stuck waiting for parts to arrive. I know how frustrating that can be. On the good side of things, my TII will be sold my next week so my funds for the project FD are still on the rise!! I might be able to complete it sooner than expected.



Zach

It's the right one. You can request a turbonetic catalog and it's in there. Turbonetic bought Spearco just in case you are wondering.



Chuck Huang

Before this turns into a v mount thread, please open up another thread under "3rd gen" if you have more questions or just email me. Thank you.



Chuck Huang

Chuck,



Not to worry. This isn't going to turn into a V-mount thread. This thread was started by me so that I could find out more info on A-Spec's GT40R kit that is for sale. It just so happens that your V-mount setup was brought into the thread, also by me, and it was discussed. I am trying to keep the focus on the GT40R kit though. Funny enough, I'll be moving just north of Sacramento next year and will be within driving distance of your shop. I look forward to meeting you in person. Laterz.



Zach

Come on guys, don't let my my thread die!!!! What's the news??

Ok here are the pics of the kit



http://www.a-spectuning.com/fimages/GT40R.jpg

http://www.a-spectuning.com/fimages/GT40R-2.jpg

http://www.a-spectuning.com/fimages/GT40R-4.jpg

http://www.a-spectuning.com/fimages/GT40R-5.jpg

http://www.a-spectuning.com/fimages/GT40R-7.jpg

http://www.a-spectuning.com/fimages/GT40R-9.jpg



Let me know if you have any questions.



-Sean

isn't the ar on the compressor on the small side, as far as singles go?

It's just a ratio...can't compare it to other turbos.

ah, thanks michel.....

You and John have to come back down and come for a ride with me....my turbo has the same compressor as the A-spec kit (88mm). I'm still in the 10's a/f wise but she's a rocket. Stupid fast, just the way I like it :-)

Michel

wow, you mean next time i come down your car will actually be running like it should!!! hahaha, i'll do that next time i'm home. i need a new clutch and might switch manifolds and stuff too.... we'll see,



oh by the way, did you say rolo up here in orlando is a pretty good tuner? maybe i'll get my car dynoed there when i'm done fixing it....

There are two dynos in Naples that we can use. Yes, he's a great tuner though. Compact is in the process of making a mild steel fully divided manifold. You could always get that ceramic coated inside and out...



Yeah she's pretty healthy at the moment. I pulled a 996 twin turbo like she was sitting still today. My front seal is apparently leaking though so that's being changed out on Saturday. It never ends....

To Zero R

What is the size of turbine housing of turbo GT40R in your picture?

Is it 0.95 or 1.06AR?

I will put this turbo in my skyline gtr so which AR you recommend for rb26 (2600CC). My target power is over 600Whp with new piston, con rod and 272cam 10.8 lift at 1.6K boost.



thank you

It is .95 and I may have a better turbo for your skyline, I will put something together and get back to you, I'm actually working on a twin 35R RB30 setup right now. I may be able to help you with your skyline project.



-Sean

So which turbo you recommend to my skyline Sean?

What is your target WHP in rb30 twin GT35? (I guess 1200 hp ..Cool) and how you deal with the gearbox and front drive shaft? even holinger sequential may have problem at that level and hks front drive shaft will last for less than 5 drag run

How about your GT40r on 13b-rew, Have you test run turbo already?

Why you select .95 AR instead of 1.06 and what about exhaust temp?



Thanks Sean

On a GTR you can get 450-500 on stock turbines, so this turbine should get you to 600 easy. Gtr's with cam's and stock bottom end and t04r/ t78 size turbine get anywhere from 700-900. With all the supporting mod's of course.

Sorry for the late reply, I had a Idea I wanted to chase down for you but haven't had the time, the 40R with the .95 should be OK, my goals on the RB30 are not that lofty it is attainable but we'll see it all depends on the customer, as for going with the .95 on the kits, I sell both the .95 and 1.06 it's up to the customer really. If you want call me here 630.543.8890



-Sean

sorry, slightly off topic, but where does that "Performance Calculator Mazda RX7" computer program come from? (I searched)