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Brettus turbo 111 (the ultimate Renesis turbo ?)

Old 06-19-2015, 05:33 PM
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Originally Posted by TeamRX8 View Post
1.25" Std/Sch 40 pipe is 35mm ID, 42.2mm OD

Typically 1.50" Sch. 40 pipe is considered minimum ID for shared turbo/wastegate flow. It will come down to which one is more restricted; wastegate or turbo feed
Just checked the 11/2" sample i have here and it's sch10s he uses ...... so looking at the chart the 11/4" will be 36.7mm ID = 1058mm2

For what I want to do with the car , response is more important than peak whp . I do want to get a great number at peak as well ............but I have to admit it's more for proving the concept than anything else.

Last edited by Brettus; 06-19-2015 at 05:49 PM.
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Old 06-19-2015, 06:00 PM
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Sch 10 will help, glad to hear it



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Last edited by TeamRX8; 06-23-2015 at 10:49 PM.
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Old 06-23-2015, 10:28 PM
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Brett - best of luck !!! I am very happy to see you trying an idea that's been kicked around and shut down mulfiple times...

Making me want to buy another rx8...
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Old 06-23-2015, 11:09 PM
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Originally Posted by stinksause View Post
Brett - best of luck !!! I am very happy to see you trying an idea that's been kicked around and shut down mulfiple times...

Making me want to buy another rx8...
Really ? Never seen it talked about before ? Unless you are referring to the twin scroll idea ?https://www.rx8club.com/series-i-maj...system-216109/

Thanks BTW

Last edited by Brettus; 06-24-2015 at 02:47 AM.
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Old 06-24-2015, 01:04 AM
  #80  
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Off to the fabricators in the morning !



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Old 06-24-2015, 10:35 AM
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Just an idea I had while reading about your interesting setup your working on...

Instead of using a WG on the Center ports, wouldn't something like a "Quick Spool" (butterfly) type valve to close those port be a better option??

Don't shoot, just a thought...

Last edited by Ekim; 06-24-2015 at 10:38 AM.
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Old 06-24-2015, 02:50 PM
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Originally Posted by Ekim View Post

Instead of using a WG on the Center ports, wouldn't something like a "Quick Spool" (butterfly) type valve to close those port be a better option??
..
Please explain .. don't understand why you would think that .
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Old 06-24-2015, 02:55 PM
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Pretty sure he means this....

https://youtu.be/_KNLKVgg8po
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Old 06-24-2015, 03:11 PM
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Originally Posted by stinksause View Post
Pretty sure he means this....

https://youtu.be/_KNLKVgg8po
Yeah ............. don't see it working any better/worse than a wastegate but interested to hear why Ekim suggested it .

Last edited by Brettus; 06-24-2015 at 03:30 PM.
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Old 06-24-2015, 04:10 PM
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Originally Posted by Brettus View Post
Yeah ............. don't see it working any better/worse than a wastegate but interested to hear why Ekim suggested it .
As far as i understand it, it's just for spool - butterfly directs all the flow to one scroll when spooling and then both scrolls when spooled - i've seen better designs were the valve works as a wall/hole between the runners

I think it may be overcomplicating it - if for some bizzare reason you have issues with spool, you can look into it
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Old 06-24-2015, 06:22 PM
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Originally Posted by Brettus View Post
Yeah ............. don't see it working any better/worse than a wastegate but interested to hear why Ekim suggested it .
Sorry for the horribly unclear post...

The thought in my mind is more like a combination of a exhaust cut-out and a "quick spool valve".

My thought would be have a your mid iron runner blocked with a "butter-fly" valve and actuated by an WG actuator. The valve mechanism is all metal and mechanical, so the issue of heat or over heating a WG diaphragm shouldn't be an issue. Also, in my mind, it could have better flow characteristics than a WG.

One thing I don't know is how well it would seal. If the "butter-fly" is like stainless, it might expand just a enough to prevent a leak causing exhaust to escape = loss of energy from main ports.

Hope you can imagine what I am mean. Not very good at explain things sometimes. Also this contraption would be built into the runner and run/exhaust into the main exhaust system... just put that in there just in case someone thinks I'm just saying to put a cut-out and exhaust to atmosphere...
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Old 06-24-2015, 06:41 PM
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Originally Posted by Ekim View Post
Sorry for the horribly unclear post...

The thought in my mind is more like a combination of a exhaust cut-out and a "quick spool valve".

My thought would be have a your mid iron runner blocked with a "butter-fly" valve and actuated by an WG actuator. The valve mechanism is all metal and mechanical, so the issue of heat or over heating a WG diaphragm shouldn't be an issue. Also, in my mind, it could have better flow characteristics than a WG.

One thing I don't know is how well it would seal. If the "butter-fly" is like stainless, it might expand just a enough to prevent a leak causing exhaust to escape = loss of energy from main ports.
Gotya ... yeah the sealing might be an issue .
Biggest issue so far though is space ... shoehorning everything in is a nightmare .
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Old 06-24-2015, 10:40 PM
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mostly because you're RHD. I couldn't understand why you had to use the smaller pipe until remembering that point ...
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Old 06-24-2015, 11:09 PM
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Originally Posted by TeamRX8 View Post
mostly because you're RHD. I couldn't understand why you had to use the smaller pipe until remembering that point ...
It's bad enough that space is limited ......... add RHD to that and you are doubly handicapped before you start !
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Old 06-25-2015, 04:39 PM
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So here is a little more on my thought... did a little light weight research on the interwebs and saw ATPs VES

VES-ASSEMBLY - out of stock again until unknown date due to production delays : atpturbo.com

VES-MAIN-VALVE-UNIT - out of stock again until unknown date due to production delays : atpturbo.com

Looks like this would hold better to the heat,locate easier, and seal.




MS Paint ftw!!

an "inline setup".

also if place further down the runner on the down-pipe side, you have more room and shouldn't change the F&R port flow. Flow is still going to follow the least path of resistance.... my 3.5 cents.

Really looking forward to what you come up with and your data.
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Old 06-25-2015, 05:23 PM
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Thanks for that.
It looks like it would do the trick ...Will explore that possibility if we cant get the WG to fit .

One thing I'm trying to avoid if possible is too much pipe volume between port and valve .
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Old 06-25-2015, 08:59 PM
  #92  
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Originally Posted by Brettus View Post
Off to the fabricators in the morning !



gotta love that jack haha Brett Speed
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Old 06-26-2015, 01:40 AM
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Originally Posted by Brettus View Post
Thanks for that.
It looks like it would do the trick ...Will explore that possibility if we cant get the WG to fit .

One thing I'm trying to avoid if possible is too much pipe volume between port and valve .
It's a bad idea on several levels, not to mention they don't make one anywhere near the pipe size you have and the lack of space to fit it
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Old 06-26-2015, 12:26 PM
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Originally Posted by TeamRX8 View Post
It's a bad idea on several levels, not to mention they don't make one anywhere near the pipe size you have and the lack of space to fit it

I understand the ATP VES is too large. I was using it as an visual example to go with my illustration.

Elaborate on why its bad on several levels?

Possible Issues: (I can think of)

Proper Seal (Tight Tolerance, shouldn't be an issue)

Carbon contamination

Fabrication
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Old 06-26-2015, 12:40 PM
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Any plans to run an oil scavenge pump?
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Old 06-26-2015, 03:02 PM
  #96  
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Originally Posted by stinksause View Post
Any plans to run an oil scavenge pump?
Turbo will be sitting higher than the Greddy ,which works fine without one , so can't see any need.
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Old 06-26-2015, 06:10 PM
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What is your plan for dealing with the turbine inlet piping and position? It will make contact with the stock engine mount.
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Old 06-26-2015, 06:17 PM
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Originally Posted by hoss -05 View Post
What is your plan for dealing with the turbine inlet piping and position? It will make contact with the stock engine mount.
Will be making a new mount ....
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Old 06-28-2015, 05:01 PM
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Converted back to NA (f**k it's sooooooooooooooooooo slow) and drove it in to fabricators this morning .
Feeling somewhat apprehensive I have to say .
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Old 06-28-2015, 05:05 PM
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Originally Posted by Brettus View Post
Converted back to NA (f**k it's sooooooooooooooooooo slow) and drove it in to fabricators this morning .
Feeling somewhat apprehensive I have to say .
Good luck with that.
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