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alex687 wrote:what does clipping the turbine involve? cutting a bit off each turbine blade?
I think I need a new turbine wheel before I look at that option!
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Yes mate
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![Mr. Green :mrgreen:](./images/smilies/icon_mrgreen.gif)
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Does not work so well with ceramic turbines
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alex687 wrote:what does clipping the turbine involve? cutting a bit off each turbine blade?
I think I need a new turbine wheel before I look at that option!
mr2magic wrote:Due to the nature of the modification, it cannot be done on ceramic turbines.
alex687 wrote:so wouldn't porting the wastegate have the same effect by allowing the gases in their quest![]()
without sacrificing the turbine efficiency??
2mad wrote:Thats what i did.
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can post picks
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made my wastegate ports massive
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alex687 wrote:2mad wrote:Thats what i did.
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can post picks
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made my wastegate ports massive
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Go for it.how far back into the housing did you have to enlarge them?
alex687 wrote:Wow nice job.Not sure I have the patience to do something like that!
mr2magic wrote:Re porting the wastegate and thereby improving flow:
In a word no.The wastegate has the job of divertung the exhaust gasses before they've imparted their energy on the turbine and has no impart on the capacity of the turbine.
Increasing the wastegate area by too much will hurt transient respons and top end because more of the fixed amount of exhaust gas available from combustion will go through the wastegate if it opens.
mr2magic wrote:Was it a standard ct26?
mr2magic wrote:Hmmm I really believe that your being mislead.We know the ct20b has the perfect exhaust housing, turbine and compressor combo.
Porting the wastegate would mean, that more gas bypasses the turbine from the moment the flapper cracks open.
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.less gas at the turbine means less power.
But as with any theory, the real world numbers will tell the whole story.
mr2magic wrote:Boost creep or boost spike points to a mismatch aswellBasically the wastegate cannot divert enough exhaust gas to stop the increase in turbine speed
- ergo the wastegate is to small.
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So you're not really making more power, you're making the correct amount