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Old 03-08-2011, 11:53 PM   #1
TRSCobra
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Default Who's had their welded Perrin ELH crack?

The slip joints on my Perrin header are leaking, and even t-bolt clamps haven't completely stopped the leak. I've asked two different reputable subaru performance shops to weld them up, and they both insist they'll crack in no time.

I know people on here have welded their slip joints, but how many have cracked because of it?

The car is my DD and my OEM manifolds are currently on the other side of the country, so I can't just throw them on.
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Old 03-09-2011, 12:14 AM   #2
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i went to auto zone and got 2000 degree exhaust manifold sealent. i put about 3 layers on and then when you run the car it bakes it on. mine wasnt leaking and i have exhaust wrap so no way to tell but hey i thought id give it a shot. the stuff isnt cheap $15 for a little ass tube. PERMATEX® Hi Temp. Metal Repair Compound

Last edited by synolimit; 03-09-2011 at 12:23 AM.
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Old 03-09-2011, 02:14 PM   #3
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Thanks, I think I'll try that stuff next time I get a chance. Luckily, the removal and install of this header takes 20 minutes tops!
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Old 03-09-2011, 02:40 PM   #4
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I had my Perrin header welded like 2-3 years ago I can't remember exactly. As far as I know they haven't crack.

I tried everything to keep the slip joints from leaking. I try putting copper wire around them to fill the gaps, many diffirent Permatex pastes, T-bolt clamps and the slip joints were still leaking. I had my header tig welded and problem sold . One thing to keep in mind is that my header has been ceramic coated since I bought them.
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Old 03-09-2011, 03:35 PM   #5
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My Perrin's slip joints are welded and the headers are wrapped and sprayed.
No issues so far but I don't beat on the car on the street or the track.
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Old 03-09-2011, 03:47 PM   #6
Paidfor
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Quit buyin that perrin crap. Theres lots of other better options out there ya know lol If youve got to weld it to make it work, just make your own already!
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Old 03-09-2011, 04:00 PM   #7
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Not everyone has the resources to make there own nor the funds.... It's just the slip joint not the actual welds that are cracked/leaking
Quote:
Originally Posted by MyFucnSTi View Post
Quit buyin that perrin crap. Theres lots of other better options out there ya know lol If youve got to weld it to make it work, just make your own already!
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Old 03-09-2011, 04:02 PM   #8
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Like mentioned before I'd use the Permatex high temp , I haven't had this problem yet but if/when it happens Thats what I planned on doing.
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Old 03-10-2011, 06:44 AM   #9
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Quote:
Originally Posted by MyFucnSTi View Post
Quit buyin that perrin crap. Theres lots of other better options out there ya know lol If youve got to weld it to make it work, just make your own already!

I love some of the stupid crap people say on this forum...
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Old 03-10-2011, 08:52 PM   #10
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Quote:
Originally Posted by MyFucnSTi View Post
Quit buyin that perrin crap. Theres lots of other better options out there ya know lol If youve got to weld it to make it work, just make your own already!

A little late for the purchase advice, don't you think?

BTW, it would cost me way more than the ~$750 I paid for the header (a year ago) to buy a welder, a pipe bender, 304 stainless piping in two different sizes, the 1/2" thick 321 stainless flanges, and go to welding school to make my own.

Not counting all the necessary R&D time and the dyno runs to prove that it doesn't take away power...
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Old 03-10-2011, 09:09 PM   #11
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Welded & wrapped my set approx7 months ago, I beat the living snot outta her every time she's driven .. which is 2-3 days a week on avg .. no leaks.
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Old 03-10-2011, 09:17 PM   #12
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I have been testing the same customer returned (from a bad slip fit) welded slip fit header for more than 3 years with ZERO issues. Previous to this, i had another set on my WRX and an another STI all welded. We have been testing this to see how long this really lasts and then potentially make a change to how the header is made. Just something else to think about!
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Old 03-11-2011, 12:27 AM   #13
TRSCobra
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Quote:
Originally Posted by PERRINJeff View Post
I have been testing the same customer returned (from a bad slip fit) welded slip fit header for more than 3 years with ZERO issues. Previous to this, i had another set on my WRX and an another STI all welded. We have been testing this to see how long this really lasts and then potentially make a change to how the header is made. Just something else to think about!
This is good to hear. I'd have returned them under warranty, but I bought them while I was in Afghanistan and can't find the receipt. I keep having people tell me they will crack, but have NEVER heard any stories of it actually happening. I'm just going to get them welded and be done with it.
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Old 03-11-2011, 01:25 AM   #14
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Been running mine for 1 year/ 10k miles with no issues. They are swaintech ceramic coated and wrapped.
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Old 03-11-2011, 06:23 AM   #15
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^^^Just wondering why you felt the need to wrap on top of Swain coating?
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Old 03-11-2011, 05:35 PM   #16
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In terms of function I would take wrap over a coating anyday, however A coating is a protectant to prevent moisture from damaging the header under wrapping.

Quote:
Originally Posted by A-man07 View Post
^^^Just wondering why you felt the need to wrap on top of Swain coating?
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Old 03-11-2011, 07:41 PM   #17
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For function, coat it, wrap it, wrap it again and paint it!

The only issue is wrapping can deform the part. I have seen a few where customers wrapped them and unbolted the OEM turbo brackets and it caused the turbo to move because the headers got hot and stayed red hot(which is when they are soft and plyiable)and it moved. Then it cooled in this position. Then they don't fit after they come off the car.

We have been working on something i think you guys will be interested in. Its going to be a couple more months, but you will see!
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Old 03-11-2011, 07:51 PM   #18
aboothman
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Quote:
Originally Posted by A-man07 View Post
^^^Just wondering why you felt the need to wrap on top of Swain coating?
wrap is ALWAYS better than coating, any coating.

Main reason was because the header was melting my radiator shroud. So I went ahead and wrapped the headers, uppipe, and 2 ft of the downpipe.

Quote:
Originally Posted by boost4life View Post
In terms of function I would take wrap over a coating anyday, however A coating is a protectant to prevent moisture from damaging the header under wrapping.
And this too


Quote:
Originally Posted by PERRINJeff View Post
For function, coat it, wrap it, wrap it again and paint it!

The only issue is wrapping can deform the part. I have seen a few where customers wrapped them and unbolted the OEM turbo brackets and it caused the turbo to move because the headers got hot and stayed red hot(which is when they are soft and plyiable)and it moved. Then it cooled in this position. Then they don't fit after they come off the car.

We have been working on something i think you guys will be interested in. Its going to be a couple more months, but you will see!
Give us a hint!! My car has so damn many of your parts it could pass for a Perrin shop car lol
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Old 03-11-2011, 07:52 PM   #19
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I just unwrapped my perrin headers after 2 years of them being wrapped with Thermotech heat wrap and inspected them thoroughly for cracks.

There were no cracks to be found. They had deformed a bit similar to what Jeff mentioned above, but I had all the OEM turbo bracket bolts installed and tight. A slight adjustment to the slip fitting and they again fit great.

The one complaint I have about these headers is where the tubes connect to the flange for the uppipe it is a very rough transition. Some work with rounding out the end of the collector before bringing it into the flange would give a much smoother transition and help with flow. Granted it is not a big deal, but every little bit helps.

Overall I'm very happy with these headers.
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Old 03-11-2011, 07:57 PM   #20
TRSCobra
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Quote:
Originally Posted by PERRINJeff View Post
We have been working on something i think you guys will be interested in. Its going to be a couple more months, but you will see!
Teaser pics?

Quote:
Originally Posted by speedyHAM View Post
The one complaint I have about these headers is where the tubes connect to the flange for the uppipe it is a very rough transition. Some work with rounding out the end of the collector before bringing it into the flange would give a much smoother transition and help with flow. Granted it is not a big deal, but every little bit helps.
IIRC, Perrin addressed this in their newer version of the header, but I might be confused.
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Old 03-11-2011, 08:06 PM   #21
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Quote:
Originally Posted by aboothman View Post
Give us a hint!! My car has so damn many of your parts it could pass for a Perrin shop car lol
Its blue...

Quote:
Originally Posted by speedyHAM View Post
I just unwrapped my perrin headers after 2 years of them being wrapped with Thermotech heat wrap and inspected them thoroughly for cracks.

There were no cracks to be found. They had deformed a bit similar to what Jeff mentioned above, but I had all the OEM turbo bracket bolts installed and tight. A slight adjustment to the slip fitting and they again fit great.

The one complaint I have about these headers is where the tubes connect to the flange for the uppipe it is a very rough transition. Some work with rounding out the end of the collector before bringing it into the flange would give a much smoother transition and help with flow. Granted it is not a big deal, but every little bit helps.

Overall I'm very happy with these headers.
Yup, we sure did address that. While this does make the transition smoother and better, all dyno work was done on the version you have. So its not like they don't work, just not as pretty.
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Old 04-25-2013, 05:09 PM   #22
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Sorry to bump an ancient thread, but did Perrin ever address the cracking/leaking headers? I can't find any other threads announcing improvements made to the product, and there seems to be a number of people with cracking problems.
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Old 04-25-2013, 08:40 PM   #23
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Quote:
Originally Posted by Wraith View Post
Sorry to bump an ancient thread, but did Perrin ever address the cracking/leaking headers? I can't find any other threads announcing improvements made to the product, and there seems to be a number of people with cracking problems.
Perrin ELH now come from the factory with no slip joints, they are already welded. Mine works great.
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Old 04-25-2013, 09:32 PM   #24
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My welded, coated and wrapped set still have not cracked...3 years and 30k miles later.

They were also on the GST L for at least a season before they became mine
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Old 04-26-2013, 09:33 AM   #25
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I bought a set of used Perrin EL headers to go on my DD ~275-300whp WRX; they're in like new shape and already wrapped over the slip-joints. Can I just bolt these on and not worry at my power levels? Do I need to re-adjust that slip joint once bolted to my car? And if they crack will I hear the typical tick-tick sound or does the wrap muffle the problem?
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