external wastegate
#1
external wastegate
has anyone on here ever heard of using the old eclipse trick of welding a flange and tial 38mm wastegate to the manifold? I am thinking of trying this on my evo to eliminate as much taper as possible. I already have a tial wg and will not be out any money to do this. I have been told all you have to do is weld the wg flapper shut and rerun boost control lines. Thank you for any input.
#5
I can´t see increased WG valve area helping to alleviate your taper. On the other hand, an overboost situation, such as boost spike, might be helped by using a larger external gate though. Taper is by definition is a diminution of boost pressure with the flapper valve fully opened. Improving WG flow will only further decrease, not raise, boost pressure. Just my opinion.
#6
I believe Buschur tested an EWG setup on a stock turbo and lost a ridiculous amount of torque and made the same horsepower... this was LONG time ago, try doing a search, although you probably wont find it. I thought about external setup and its effect on the setup. Id like to see one tested over again on a stock turbo or Green.
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#8
Proof?
I know Dynoflash posted about an EWG. (I do NOT take everything he says to be fact) In that post I believe that he had said that it didnt show any improvement nor diminishment of power. He provided the video and dyno graph of that car. I am going to go search for it again. I will try to post a link if I find it....
I know Dynoflash posted about an EWG. (I do NOT take everything he says to be fact) In that post I believe that he had said that it didnt show any improvement nor diminishment of power. He provided the video and dyno graph of that car. I am going to go search for it again. I will try to post a link if I find it....
Last edited by sabastian458; Aug 23, 2007 at 01:09 PM.
#9
Proof? I know Dynoflash posted about an EWG. (I do NOT take everything he says to be fact) In that post I believe that he had said that it didnt show any improvement nor diminishment of power. He provided the video and dyno graph of that car. I am going to go search for it again. I will try to post a link if I find it....
He is a clown and typed that wrong. He was using an extneral dump off the 02 housing. I dont know why he wrote "EWG" because it was not.
#12
Well the thing is, what Al wrote was misleading (not intentionally though). EWG means EXTERNAL WASTEGATE. Using an 02 housing with a dump still uses an INTERNAL WASTEGATE, its just a modification to the 02 housing, not the wastegate itself. I have a dump and its great
#13
I think you should go into business making/selling them because I, along with many other members really want one
#14
It crossed my mind. The one huge limiting factor is that just about everyone has different lower intercooler pipe setups and that directly impacts the shape of the dump tube itself. A lot of different LICPs run inches different and there is very limited room in there so it has to be pretty precise. I dont think there could be a "one size fits all" like there is on the 1st generation and 2nd generation DSMs. They have a lot of room to play with on the 02 housing side which allows for many different configuration of the dump tube.
#15
I have an AMS lower piping Hell, if you can make the housing with just a few inches of dump tube and seen some spare tubing detached from the housing, I can have the rest plumbed arround to where it needed to be