Originally Posted by TeamRX8
(Post 4699496)
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 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. |
Sch 10 will help, glad to hear it
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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... |
Originally Posted by stinksause
(Post 4700415)
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... Thanks BTW :) |
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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... |
Originally Posted by Ekim
(Post 4700521)
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?? .. |
Pretty sure he means this....
https://youtu.be/_KNLKVgg8po |
Originally Posted by stinksause
(Post 4700635)
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Originally Posted by Brettus
(Post 4700638)
Yeah ............. don't see it working any better/worse than a wastegate but interested to hear why Ekim suggested it .
I think it may be overcomplicating it - if for some bizzare reason you have issues with spool, you can look into it |
Originally Posted by Brettus
(Post 4700638)
Yeah ............. don't see it working any better/worse than a wastegate but interested to hear why Ekim suggested it .
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... :D: |
Originally Posted by Ekim
(Post 4700679)
Sorry for the horribly unclear post... :yelrotflm
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. :D: Biggest issue so far though is space ... shoehorning everything in is a nightmare . |
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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Originally Posted by TeamRX8
(Post 4700723)
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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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. https://cimg9.ibsrv.net/gimg/www.rx8...fa0891091c.jpg 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. |
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 . |
Originally Posted by Brettus
(Post 4700435)
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Originally Posted by Brettus
(Post 4700957)
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 . |
Originally Posted by TeamRX8
(Post 4701021)
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 |
1 Attachment(s)
Any plans to run an oil scavenge pump?
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Originally Posted by stinksause
(Post 4701199)
Any plans to run an oil scavenge pump?
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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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Originally Posted by hoss -05
(Post 4701308)
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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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 . |
Originally Posted by Brettus
(Post 4701587)
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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