Adjustable surge port
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From: Norn Iron
Adjustable surge port This popped up on FB...
2 things surprising. How well a 76mm performed, and also the differences the port made. Although it would have been better to use a turbo that might be susceptible to compressor surge, which I doubt the little 76 would be in such a motor
https://borowskirace.com/blogs/news/...BDzulPSEX_1taI
2 things surprising. How well a 76mm performed, and also the differences the port made. Although it would have been better to use a turbo that might be susceptible to compressor surge, which I doubt the little 76 would be in such a motor
https://borowskirace.com/blogs/news/...BDzulPSEX_1taI
The power curves are identical, the power was a difference of less than 5%. It sounds like the problem of compressor surge would have been solve if a properly sized turbo would have been spec'd to start with. Saying that you can tune the map to hook up better at a crap track can also be solved several other ways, without a special turbo.
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From: Norn Iron
The power curves are identical, the power was a difference of less than 5%. It sounds like the problem of compressor surge would have been solve if a properly sized turbo would have been spec'd to start with. Saying that you can tune the map to hook up better at a crap track can also be solved several other ways, without a special turbo.
The curves were similar, clearly power and torque levels did vary, so it is making a difference. And surge would never be an issue on that setup anyway.
And saying choose a "properly sized" turbo is a bit daft, because on setups where surge occurs...there is clearly no "proper" size that meets power needs etc etc. You'd end up sacrificing performance somewhere to reduce airflow to prevent surge.
The adjustable notion is an interesting idea....but I wonder is a cheaper version on the likes of a Precision with the holes drilled....just fill in some of the holes to reduce the amount of air that can bypass.
Although I'm surprised that the zero gap didnt produce the most power.
They claiming the main gain is at a poor track....with boost by gear and electronic controllers that is a non-issue for most. Certainly easier to adjust from the cabin than to climb under the hood, loosen 4 set screws and start cranking on the compressor inlet....
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From: Norn Iron
But yes, it will be a very small market to require such a feature....and to go to the cost of patenting it sounds a bit hopeful of them as it will only be a patent on that actual design.
And blocking the surge port holes I already described, would be another just as easy cheaper method lol
It'd be interesting for someone to dyno a few turbos and run with/without the surge ports. Seeing as most compressors wouldnt be anywhere near surge in the first place, seems almost pointless for most to run them
Maybe you missed the dyno part ? Looks a piece of **** to adjust and monitor changes.
But yes, it will be a very small market to require such a feature....and to go to the cost of patenting it sounds a bit hopeful of them as it will only be a patent on that actual design.
And blocking the surge port holes I already described, would be another just as easy cheaper method lol
It'd be interesting for someone to dyno a few turbos and run with/without the surge ports. Seeing as most compressors wouldnt be anywhere near surge in the first place, seems almost pointless for most to run them
But yes, it will be a very small market to require such a feature....and to go to the cost of patenting it sounds a bit hopeful of them as it will only be a patent on that actual design.
And blocking the surge port holes I already described, would be another just as easy cheaper method lol
It'd be interesting for someone to dyno a few turbos and run with/without the surge ports. Seeing as most compressors wouldnt be anywhere near surge in the first place, seems almost pointless for most to run them
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Thread Starter
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Certainly would have been something to heavily test first...before worrying about a patent. It just seems very unlikely anyone would have any interest in copying, except China.
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Verdad Gallardo True, then all you have to work about is the threads stripping on the crap China casting lolol.