Is my brand new T4 flange warped from welding?
#1
TECH Regular
Thread Starter
iTrader: (20)
Join Date: Mar 2007
Location: NW Burbs of Chicago
Posts: 452
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I had to pull out my new T4 crossover pipe to get the coating repaired as it all flaked back off a couple weeks after install.
Now i have the newly coated piece back and as I'm looking it over I notice that the flange looks REALLY warped on the short sides while the long sides appear flat. Here's the pics I just took:
![](https://lh5.googleusercontent.com/-16FR5_x9txk/Td20YRpewmI/AAAAAAAAE2A/HLw_VyXNoxk/s512/2011-05-25%25252020.53.26.jpg)
![](https://lh6.googleusercontent.com/-Hd32ydbBrbI/Td20ScC_vVI/AAAAAAAAE18/QuWgJysncXc/s720/2011-05-25%25252020.54.44.jpg)
Yep, I had the .022, .023, and .024 feelers in there. That's .069 warp in 2.75"!??? That can't be right.
Does this mean that I'm going to have to get my flange milled flat? Because I'd guess that's what it SHOULD be... FLAT.
This is a welding issue, right? Or could something else cause this?
Now i have the newly coated piece back and as I'm looking it over I notice that the flange looks REALLY warped on the short sides while the long sides appear flat. Here's the pics I just took:
![](https://lh5.googleusercontent.com/-16FR5_x9txk/Td20YRpewmI/AAAAAAAAE2A/HLw_VyXNoxk/s512/2011-05-25%25252020.53.26.jpg)
![](https://lh6.googleusercontent.com/-Hd32ydbBrbI/Td20ScC_vVI/AAAAAAAAE18/QuWgJysncXc/s720/2011-05-25%25252020.54.44.jpg)
Yep, I had the .022, .023, and .024 feelers in there. That's .069 warp in 2.75"!??? That can't be right.
Does this mean that I'm going to have to get my flange milled flat? Because I'd guess that's what it SHOULD be... FLAT.
This is a welding issue, right? Or could something else cause this?
#4
TECH Regular
Thread Starter
iTrader: (20)
Join Date: Mar 2007
Location: NW Burbs of Chicago
Posts: 452
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
It's off pretty much that far using the feeler gauges themselves as well, I just needed to use them to measure how far it was off... thats why I added the 2nd pic with the feeler gauges flat against the flange too...
In any case, I guess this needs to be corrected. Great. Here I thought I'd have the car for the Memorial Day weekend.
In any case, I guess this needs to be corrected. Great. Here I thought I'd have the car for the Memorial Day weekend.
![MAD](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_mad.gif)
Trending Topics
#10
TECH Apprentice
iTrader: (3)
Join Date: Jan 2011
Location: Tacoma, Wa
Posts: 379
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
let me guess it is a stainless flange? that is why most builders use mild flange welded to the stainless pipe using 309 rod. you can use the 304 flange but you need a skilled welder that wont use to much heat and warp your flange.
#12
TECH Junkie
iTrader: (4)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
you know its warped... so you shouldnt just bolt it on.
I wouldnt weld on it more.. that wont really help.... plus its coated.
just have a shop deck it flat. it will then be perfectly flat. your coating is not effected. its still going to be thick enough... and it will seal correctly.
I wouldnt weld on it more.. that wont really help.... plus its coated.
just have a shop deck it flat. it will then be perfectly flat. your coating is not effected. its still going to be thick enough... and it will seal correctly.
#13
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Next time bolt it to a turbine housing when welding it up (if you can). This will act like a heatsink and draw some of the excess heat out of the flange and hopefully keep everything straighter. Another thing to try is to weld small sections at a time instead of trying to do the whole thing at once. This prevents heat buildup in the part and warping.
#14
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
that is why you bolt on a 1/2" plate when finish welding the flange. The plate will keep the flange "flatter" and pull heat out to keep it from getting too hot when welding.