Im running out of room...
Thread Starter
Staging Lane
Joined: May 2012
Posts: 70
Likes: 0
Im running out of room... Im running out of room in the AMC to mount the wastegate where it should be, what is preventing me from running it like this guy?
http://image.carcraft.com/f/techarti...ine_guide+.jpg
If he can, why cant I? Like I said, I know where it should be, but space is at a premium. What is the drawback to this? Anyone mount theirs like this? How was the experience?
http://image.carcraft.com/f/techarti...ine_guide+.jpg
If he can, why cant I? Like I said, I know where it should be, but space is at a premium. What is the drawback to this? Anyone mount theirs like this? How was the experience?
Staging Lane
Joined: Oct 2009
Posts: 97
Likes: 0
From: Frederick, Maryland
do you mean mount the waste gate backwards (bad idea) or basically mount the WG in a way that it only really dumps exhaust off one bank of the engine? (good idea as long as your WG is large enough to control the boost)
I basically did the same thing on a single turbo V6 project, I modified a stock manifold to be my turbo manifold and used a completely stock manifold on the opposite side and a very simple crossover (wish i had a pic) very similar to a 98-02 F-body Y pipe but a "U" pipe from one manifold to the other (stock locations) I mounted my Waste gate on the "U" Pipe.
You waste gate just has to be big enough to dump enough exhaust to control boost. If your gate is OPEN and the other 1/2 of your engine still has enough exhaust gas pressure to spool the turbo or even just keep the turbo spooled, then your gonna have boost control issues.
I basically did the same thing on a single turbo V6 project, I modified a stock manifold to be my turbo manifold and used a completely stock manifold on the opposite side and a very simple crossover (wish i had a pic) very similar to a 98-02 F-body Y pipe but a "U" pipe from one manifold to the other (stock locations) I mounted my Waste gate on the "U" Pipe.
You waste gate just has to be big enough to dump enough exhaust to control boost. If your gate is OPEN and the other 1/2 of your engine still has enough exhaust gas pressure to spool the turbo or even just keep the turbo spooled, then your gonna have boost control issues.
That wont work, you'll have boost creep like no tomorrow, im not sure even if you had good placement on that one side if it would work, id still think that since the other primary has priority, it'll still run that turbo...
The wastegate needs to be on the outside of a bend ideally, in this pic, you could almost make a small "Y" between the two primaries for the wastegate.
The wastegate needs to be on the outside of a bend ideally, in this pic, you could almost make a small "Y" between the two primaries for the wastegate.
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Staging Lane
Joined: Oct 2009
Posts: 97
Likes: 0
From: Frederick, Maryland
Yea your talking about EXACTLY what I did. But to keep it is perspective I was using a mid sized turbo making 400WHP on a 3.0L V6 and using a single TiAL 44mm wastegate. and like the others have said boost creep can become an issue if your wastegate cant dump enough exhaust gas.
Depending on engine displacement, turbo size and desired boost levels.... Bla Bla Bla you see what im getting at. if you do your math right and you run a wastegate that can flow enough or dual WG's on the same pipe (don't laugh is works on RX7's & S2000's :p )
But ideally very similar to what "TheBeast" said. is there any way to get perhaps a short 2" "J" pipe welded in to the merge collector area just before the turbo flange with a waste gate flange on the end of it.
Here is a Pic to give you an idea.
#1 no not my build and #2 I don't know why they added that 2nd 90deg bend to the waste gate tube. I woulda left it with the wastgate outlet pointed up into the exhaust pipe. but hey ill assume the steering shaft was in the way
Depending on engine displacement, turbo size and desired boost levels.... Bla Bla Bla you see what im getting at. if you do your math right and you run a wastegate that can flow enough or dual WG's on the same pipe (don't laugh is works on RX7's & S2000's :p )
But ideally very similar to what "TheBeast" said. is there any way to get perhaps a short 2" "J" pipe welded in to the merge collector area just before the turbo flange with a waste gate flange on the end of it.
Here is a Pic to give you an idea.
#1 no not my build and #2 I don't know why they added that 2nd 90deg bend to the waste gate tube. I woulda left it with the wastgate outlet pointed up into the exhaust pipe. but hey ill assume the steering shaft was in the way
Next time you do one think of it like this. If possible, the exhaust gas should flow to the wastegate just as easy as the turbine. If you could have used a 90 right where it attaches to the merge it would have been much better but it should work as is seeing the setup isnt too crazy.
Staging Lane
Joined: Oct 2009
Posts: 97
Likes: 0
From: Frederick, Maryland
Looks good to me, and I think that's the lesser of the two evils. obviously not ideal, but if you don't have the room you don't have the room.
Quick question though. What are you doing with the exhaust?
Quick question though. What are you doing with the exhaust?
