Weird External Wastegate Mod
#1
Weird External Wastegate Mod
Hi guys!!! Some friends of mine have been doing this modification to their evos, I told her that this change is not quite correct since due to the evo have twin scroll turbo and with this mod they are only releasing two-cylinder pressure. The comic is that it has been successful, they have good control of boost pressure.
My question is, may have some implications with this rare modification?
This is a picture of the modification they make:
My question is, may have some implications with this rare modification?
This is a picture of the modification they make:
#5
Evolved Member
iTrader: (1)
Join Date: Mar 2005
Location: Mesoamerica/ SF Bay Area
Posts: 7,905
Likes: 0
Received 5 Likes
on
5 Posts
So, what turbo is your friend using along with this setup? Also, what is the reason for doing this WG mod in the first place? I prefer Ratty's suggestion of plumbing in a second remote gate.
#6
I said that this is not a good modification, but they keep making this modificación that has worked well for them.
Trending Topics
#9
Then we can conclude that there are no implications in this modification and is a good way to have external wastegate without much modification.
My friends do not even removed the exhaust manifold, only made a hole, welded one flange and put the wastegate, is a job of one or two hours max.
My friends do not even removed the exhaust manifold, only made a hole, welded one flange and put the wastegate, is a job of one or two hours max.
#12
Evolved Member
iTrader: (42)
Join Date: Aug 2005
Location: St. Charles, IL
Posts: 2,502
Likes: 0
Received 0 Likes
on
0 Posts
If you drill the hole while the car is running, you should keep the shavings out of the turbo.
It is pretty ghetto the way you are describing and they are only doing it for sound. Easier to add a externally dumped turbo outlet.
It is pretty ghetto the way you are describing and they are only doing it for sound. Easier to add a externally dumped turbo outlet.
#13
To me what you say is harder to do, you must remove the turbo to do a externally dump tube in the turbo outlet and this job going to look ugly.
honestly I had not done any of the two jobs.
#14
Evolving Member
iTrader: (9)
Join Date: Aug 2006
Location: Alma AR
Posts: 348
Likes: 0
Received 0 Likes
on
0 Posts
DSM guys have done this mod for years. But you also have to remember 1g/2g mannys are not devided. weld the stock flapped up and your ready for solid boost control for the most part.
#15
Evolved Member
iTrader: (1)
Join Date: Mar 2005
Location: Mesoamerica/ SF Bay Area
Posts: 7,905
Likes: 0
Received 5 Likes
on
5 Posts
I am curious as to how they have gone about keeping the internal gate always closed. Did they weld the flapper valve to its seat on the turbine housing? Did they hook a chain or cable onto the flapper valve's pivot arm to keep it shut? Or did they wire the flapper valve shut? Just wondering?