downpipe idea
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
Never really looked to see if you could grind out enough metal to go a pipe size larger or not.
I don't think there is enough metal there to go all the way to 3", but even 2.5" ID pipe would be better than the 2.25" ID stock pipe.
Look at this picture.
I don't think there is enough metal there to go all the way to 3", but even 2.5" ID pipe would be better than the 2.25" ID stock pipe.
Look at this picture.
Postmaster
Joined: Oct 2005
Posts: 3,724
Likes: 0
From: Clarksburg WV
Dave I think you forgot the picture.
But, rupejosh- if you got a 2 1/2" V-band flange, and then stepped the pipe up to 3" after the flange, you could attach it to your factory elbow with the factory clamp and have a larger downpipe. It'd be better than the stocker at least, but not as good as having a 3" elbow too.
But, rupejosh- if you got a 2 1/2" V-band flange, and then stepped the pipe up to 3" after the flange, you could attach it to your factory elbow with the factory clamp and have a larger downpipe. It'd be better than the stocker at least, but not as good as having a 3" elbow too.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
Trending Topics
Post Fiend
Joined: Oct 2008
Posts: 8,513
Likes: 2
From: concord ca
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Posting Guru
Joined: Dec 2008
Posts: 2,347
Likes: 1
From: Maysville, Kentucky
I've got access to a mill and about what ever i need. If i machined a piece of flat steel and made it to the bolt pattern i could put a 3" downpipe. The only problem is i would loose my wastegate. There's no way to weld that cast that i know of. How do u think the factory turbo would do without the wastegate. Would it overspool easily?
Postmaster
Joined: Jun 2007
Posts: 2,621
Likes: 1
From: Sweetwater Texas
The other Dean is correct, heat it with a torch until it makes spit "dance" if the spit hits it and immediatly boils off, its too hot, but if the spit just sticks and fizzles its too cold.
Sorry, I know its the most technical info, but thats just how I learned to weld cast.
Sorry, I know its the most technical info, but thats just how I learned to weld cast.
Posting Guru
Joined: Dec 2008
Posts: 2,347
Likes: 1
From: Maysville, Kentucky
I learned how to weld by listening for eggs frying so i know what u mean.
So my next question is any one have an old eldow. I wanna try to modify it to 3 inch. If i can weld to that cast i wont have to machine a new piece and can still keep my wastegate which would be a good thing.
I found a site with the elbow breakdown it looks like the waste gate is just a flap style valve. If i cut it off right were it begins to narrow and opened up the flow as much as possible and welded on a 3" pipe from there on how do think it would perform or would it just mess up the turbo?
So my next question is any one have an old eldow. I wanna try to modify it to 3 inch. If i can weld to that cast i wont have to machine a new piece and can still keep my wastegate which would be a good thing.
I found a site with the elbow breakdown it looks like the waste gate is just a flap style valve. If i cut it off right were it begins to narrow and opened up the flow as much as possible and welded on a 3" pipe from there on how do think it would perform or would it just mess up the turbo?
Posting Guru
Joined: Dec 2008
Posts: 2,347
Likes: 1
From: Maysville, Kentucky
Cargo Master
Joined: Mar 2006
Posts: 2,789
Likes: 5
From: Sand GAp, KY
If your welding to cast you better be useing a good nickel wire or rod. Also not a bad idea to pean after welding till it cools, the weld material will cool faster than the cast causing it to crack. (20 years welding fabbing for a living,both grand dads were and my dad is still at it 
)
)