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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Meth: Staggered Injection anyone?



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      07-13-2010, 03:52 PM   #23
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Damnit, someone just do it.
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      07-13-2010, 03:56 PM   #24
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i'm sure someone that's exhausted all mod options will step up to this soon
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      07-15-2010, 05:26 PM   #25
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Ok Guys, Found some great info.

I tallked to the director of the Turbo Lab (old professor of mine) at A&M and he refered me to a world renoun expert on mist cooling of Gas Turbines Cyrus B. Meher-Homji who works for Bechtal in Houston and is a cheif engineer on turbine technology for ASME (American Society of Mechanical Engineers). I sent him an email today and I am waiting for him to reply but in the mean time I found this great paper on the topic.

http://www.meefog.com/downloads/308_...sideration.pdf

The important section on erosion is on page 3 section 5.1 which basically says that several studies have shown there is nothing to worry about, as a matter of fact it can take a dust particle up to about 10 microns in size without errosion, so it can clearly take a water droplet of much larger size so the conclusion so far for me is do it but I will continue to research this and see what Homji replies because I gave him the specs to our turbo and rpm we operate at and the meth systems we use.

Now I want to research how much the intake charge will cool from a notrous mist shot and what effects that will have on the metalurgy, becasue Notrous colling > meth colling
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      07-15-2010, 06:01 PM   #26
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as i understand "pre-compressor" is the nozzle in the intake pipe. but we have twin turbochargers, so you would need 2 nozzles "pre-compressor" and 1 nozzle "pre-tb". is that ok?
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      07-15-2010, 06:36 PM   #27
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Quote:
Originally Posted by apkraven View Post
as i understand "pre-compressor" is the nozzle in the intake pipe. but we have twin turbochargers, so you would need 2 nozzles "pre-compressor" and 1 nozzle "pre-tb". is that ok?
Yes, thats the idea
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      07-16-2010, 01:22 AM   #28
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Quote:
Originally Posted by SlickSilver View Post
Ok Guys, Found some great info.

I tallked to the director of the Turbo Lab (old professor of mine) at A&M and he refered me to a world renoun expert on mist cooling of Gas Turbines Cyrus B. Meher-Homji who works for Bechtal in Houston and is a cheif engineer on turbine technology for ASME (American Society of Mechanical Engineers). I sent him an email today and I am waiting for him to reply but in the mean time I found this great paper on the topic.

http://www.meefog.com/downloads/308_...sideration.pdf

The important section on erosion is on page 3 section 5.1 which basically says that several studies have shown there is nothing to worry about, as a matter of fact it can take a dust particle up to about 10 microns in size without errosion, so it can clearly take a water droplet of much larger size so the conclusion so far for me is do it but I will continue to research this and see what Homji replies because I gave him the specs to our turbo and rpm we operate at and the meth systems we use.

Now I want to research how much the intake charge will cool from a notrous mist shot and what effects that will have on the metalurgy, becasue Notrous colling > meth colling
Sweet... I can't wait to see this. Someone do it right in front of the compressors and don't be panzies... Worst case scenario you just upgrade to some RB Turbos.
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      07-18-2010, 05:44 PM   #29
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OP, how about changing the name of the thread to "pre-turbo meth/water injection - big turbo potential" since that is what we are really debating, it will help to get more exposure And discussion I think, maybe not, Just a suggestion
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      10-13-2010, 05:03 PM   #30
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Originally Posted by dzenno View Post
Interesting..
I did but I don't think it reflects that way in the turbo forum...
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      11-19-2010, 10:44 PM   #31
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So when is someone gonna do this
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