ARH Header Install Tricks/ Help
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
If all else fails, you can use the mini-cat sensor bungs. The quality ones ($50/ea) aren't snake oil and actually work very well - I use those on the MINIs.
I'm sure this new batch of cats will take care of it, but it's an idea just in case.
I'm sure this new batch of cats will take care of it, but it's an idea just in case.
Thread Starter
Burning Brakes
Joined: May 2008
Posts: 1,146
Likes: 28
From: Aledo, TX
They installed the headers yesterday and gave me some feedback.
1. They said the gaskets sent with the kit shouldn't be used, they re-used the stock gaskets.
2. One of my O2 sensors wouldn't come out of the Catalyst and ended up stripping. They had to order a new, there was only one in the whole country....careful here.
3. My stock exhaust was leaking already where the mid pipe connects to the rear exhaust.
4. My exhaust is also being wrapped by the rear differential to keep temp's down.
1. They said the gaskets sent with the kit shouldn't be used, they re-used the stock gaskets.
2. One of my O2 sensors wouldn't come out of the Catalyst and ended up stripping. They had to order a new, there was only one in the whole country....careful here.
3. My stock exhaust was leaking already where the mid pipe connects to the rear exhaust.
4. My exhaust is also being wrapped by the rear differential to keep temp's down.
Melting Slicks
Joined: Jun 2012
Posts: 2,226
Likes: 1,029
From: Thomas Texas
As I posted yesterday, we installed theses new cats and I only have about 20 miles on them. I will post the results after 100 miles.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
I hit them with PB (or similar) and a little heat before getting them out now. The front passenger sensor was cross-threaded in my GM, so I had to re-chase the thread (not fun, but works).
Melting Slicks
Joined: Jun 2012
Posts: 2,226
Likes: 1,029
From: Thomas Texas
My friend had one O2 sensor with galled threads. Whoever installed them at the factory, over torqued it and galled the threads. We got it out, but the threads were destroyed on the O2 sensor. Heat with WD40 may prevent that. A shop owner said a regular propane torch won't get hot enough, so you may want to look for someone with a small acetylene torch. None of the parts shops we visited had the correct O2 sensor so he had to buy it the dealership. Not cheap either.
My O2 sensors came out fine with no problem.
My O2 sensors came out fine with no problem.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
If anyone here does get unlucky like that, grab a diamond file set and chase the threads - not fun, but it's doable, and will save you a bit of money and time since these are hard to find (even when cross-referenced to the other number).
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Lots of people around here with ARH LTs (far more than mid-lengths), never heard a bad thing about them.
I, personally, have a set, and have tried both the 1-3/4" and 1-7/8" sets with both catted and non-catted X-pipes. Very pleased with everything, and Nick/Steve/Phil provide some of the best service in the industry.
Lots of videos on here, tests and dynos, etc.
I, personally, have a set, and have tried both the 1-3/4" and 1-7/8" sets with both catted and non-catted X-pipes. Very pleased with everything, and Nick/Steve/Phil provide some of the best service in the industry.
Lots of videos on here, tests and dynos, etc.
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Drifting
Joined: Jan 2001
Posts: 1,326
Likes: 47
From: Tullahoma, TN
Perhaps the sensors would have been easier to remove if the motor was warm as per the installation directions shown earlier in this thread. Would be even nicer if the factory would use anti-seize on the sensor threads before installation.
Racer
Joined: Oct 2013
Posts: 398
Likes: 3
And finally, the cherry on top - the article detailing install ARH headers specifically: http://www.superchevy.com/how-to/exh...racing-headers
Melting Slicks
Joined: Jun 2012
Posts: 2,226
Likes: 1,029
From: Thomas Texas