V6 Kompressor
New member
Anyone try this mod on their stock downpipe? I removed the puck from the turbo housing, drilled and tapped a hole for a 38 mm wastegate 2 bolt flange and welded a dump pipe to the down pipe.
Stock Downpipe Mod for Boost control
- Thread starter V6 Kompressor
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It's just a six
Super Member
Re: Stock Downpipe Mod for Boost control
I thought about doing that on an extra DP I have,just have not done it yet..
That is how I am going to plumb my 3" DP, when I get around to making it,that's why I bought the flange from Mike Lee.
I think it is better than other designs I have seen.
It should control boost better & not slow down the turbo as other designs would IMO.
Only other thing I am going to add a devider wall between the turbine wheel & the wastgate valve, just to keep them separate until they merge back together in to the DP. Tip, merge the wastegate pipe as far back as allowable & re-enter the DP in as shallow angle as possible.
Got any pics of it installed yet? If you do post them up.:tup:
I thought about doing that on an extra DP I have,just have not done it yet..
That is how I am going to plumb my 3" DP, when I get around to making it,that's why I bought the flange from Mike Lee.
I think it is better than other designs I have seen.
It should control boost better & not slow down the turbo as other designs would IMO.
Only other thing I am going to add a devider wall between the turbine wheel & the wastgate valve, just to keep them separate until they merge back together in to the DP. Tip, merge the wastegate pipe as far back as allowable & re-enter the DP in as shallow angle as possible.
Got any pics of it installed yet? If you do post them up.:tup:
V6 Kompressor
New member
Re: Stock Downpipe Mod for Boost control
I'll post some pics after I install it. I will see how the acess to the spark plug goes too... I let the end of the added pipe extend into the downpipe about 1/4" to aid in pulling the exhaust through it, somewhat like the pipe nipples I've added to header collectors on race cars to help pull a vacuum on the valve cover breathers for crankcase evacuation.
I'll post some pics after I install it. I will see how the acess to the spark plug goes too... I let the end of the added pipe extend into the downpipe about 1/4" to aid in pulling the exhaust through it, somewhat like the pipe nipples I've added to header collectors on race cars to help pull a vacuum on the valve cover breathers for crankcase evacuation.
It's just a six
Super Member
Re: Stock Downpipe Mod for Boost control
Not sure if that idea is necessary,that's why I stated to route the wastgate pipe into the DP as shallow of an angle as possible. =less turbulence.
With your wastegate pipe entering the DP an extra 1/4" I would think you are creating more turbulence & actually making the 2.5" DP smaller inside @ that particular point.
@ least it's a 1/4" of round tubing entering the DP,, or having an o2 sensor,or other round objects in the exhaust stream/system seems not to hurt exhaust flow too much.
Just my thoughts & :2cents: anyways.
BTW, you are installing the Ty engine into a "G" body Elky? Nice!
Not sure if that idea is necessary,that's why I stated to route the wastgate pipe into the DP as shallow of an angle as possible. =less turbulence.
With your wastegate pipe entering the DP an extra 1/4" I would think you are creating more turbulence & actually making the 2.5" DP smaller inside @ that particular point.
@ least it's a 1/4" of round tubing entering the DP,, or having an o2 sensor,or other round objects in the exhaust stream/system seems not to hurt exhaust flow too much.
Just my thoughts & :2cents: anyways.
BTW, you are installing the Ty engine into a "G" body Elky? Nice!
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