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wastegate type

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wastegate type - 2/29/2008 6:13:11 AM   
tjbiker031


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so i was getting my turbo set up list ready for a when i start buying the parts really soon and came across a question i couldnt really find an answer for. so i know i want to get a evo3 for my gst but wasnt sure if it should have a internal or external wastegate. its going to be a daily driver but also a part-time track car every now and then for fun. and if i do go external, is it better to have to wastegate on the o2 housing or the header?

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RE: wastegate type - 2/29/2008 6:49:48 AM   
sk8dudety


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well an external would be better in any situation because it eliminate's boost creep... you could get away without one with the evo3 but if you have the money i'd say why not, right?  as far as where you mount i would probably say on the header, even though i'm not sure if it makes a difference...

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RE: wastegate type - 2/29/2008 7:56:46 AM   
TheEngineer



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external is definetly better. If you have the money then i would do it. But obiously its alot more money because you need to buy the wastegate, and manifold that can mount the wastegate up to and then the dump tube either to the atmosphere or welded back into the exhaust. And you have to have the wastegate on the manifold. Because it has to be able to dump the air prior to reaching the turbine

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RE: wastegate type - 2/29/2008 8:40:02 AM   
sk8dudety


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oh duh, haha my bad... and you can have a outlet welded onto ur stock manifold for the wastegate

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RE: wastegate type - 2/29/2008 10:54:15 AM   
dorian7


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What kind of boost will you usaually be running? I just installed an E3 2 months ago, I upgraded to 34mm wastegate and ported the turbo and it runs great, I am on stock fuel so I am at 15psi, I have 0 boost creep, if you are going to run over 20 all the time it doesn't matter but the stock wastegate is fine.

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RE: wastegate type - 2/29/2008 1:59:59 PM   
lhausi2

 

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why do i hear that all the time, that it doesn't matter if you're gunna run aboe 20 psi all day long,everyday? just cuz you got enough force that boost creep gets eliminated? and yeah i conqur with everyone, i have a 16g and if i had the money i'd go with an external wastegate,might as well

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RE: wastegate type - 2/29/2008 4:37:40 PM   
dorian7


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Becuase due to the theory of fluid dynamics when you run under 20psi the exhaust is going to mostly go through which ever hole is easier to flow through but at higher PSI it comes to an equilibrium where you are pushing hard enough to overcome that.

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RE: wastegate type - 2/29/2008 4:45:27 PM   
TheEngineer



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way to try and sound smart

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Even tho My car looks great It will never be fast. Kinda like a hot girl that dosent give it up


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RE: wastegate type - 2/29/2008 5:12:05 PM   
lhausi2

 

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haha, he looked that sh** up somewhere to sound smart
and yeah if you go that route it's a good idea to port and polish and install a 34mm flapper if you get an internal wastegate

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RE: wastegate type - 2/29/2008 5:47:21 PM   
dorian7


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College Physics Baby Wooot! 

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