Crack in Exhaust Manifold...

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10-26-21, 12:02 AM

#376

ChpEng

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Quote:

Originally Posted by itsmike177

Ditto here now, 2011 ISF with 101k miles and noticeable exhaust smell when the HVAC recirc is outside air. I prefer to have OEM due to strict smog checks in CA since they check for cats now.
Anyone know of a shop in SCAL that will repair/weld the OEM header flanges? Thanks for anyones input.

The challenge with re-welding this part is that the floating-flange design does not leave much parent material at the failure location. The tube wall there is very thin. My mechanic advised against a re-weld repair.

Floating flange rotated away from failed weld.

Another view of failed weld, showing flange-side detail.

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10-26-21, 10:52 AM

#377

lobuxracer

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Sure a mechanic will say that. Talk to a welder...I know plenty of guys who'd have no issue at all welding this flange, and they're not even the ones who could weld an aluminum can back together. Those guys can weld anything.

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10-26-21, 11:11 PM

#378

Meraki Autoworks

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We have PPE headers in stock for anyone that needs to replace their cracked OEM ones

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10-26-21, 11:36 PM

#379

93MSB

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Quote:

Originally Posted by lobuxracer

I have mine re-welded sitting on the shelf, I'll grab some pics tomorrow. He decided to weld it on the inside of the flange/runner.

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10-27-21, 12:32 AM

#380

DaveNL

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Quote:

Originally Posted by 93MSB

I have mine re-welded sitting on the shelf, I'll grab some pics tomorrow. He decided to weld it on the inside of the flange/runner.

That's exactly how this should be done. If you do it right it will be a full penetration weld. Just clean it very well and mate the the loose piece exactly on the old fracture. Check with a ruler for straightness.

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04-07-22, 05:59 PM

#381

CCColtsicehockey

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Recently bought my ISF back from a friend I sold it to six and a half years ago. I noticed the other day I have a weird tapping or ticking sound. I can't hear it from the engine bay or at startup. After driving for a while and coming to a stop you can hear it when you open the door and from the back of the driver side wheel area the most.

Here is a video I took. Those that have had this problem is this the sound you hear from it?

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04-07-22, 06:29 PM

#382

svtec

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Quote:

Originally Posted by WReuroR

Not the headers and why are your comments disabled?

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04-07-22, 06:32 PM

#383

CCColtsicehockey

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Quote:

Originally Posted by svtec

Not the headers and why are your comments disabled?

No idea why comments are disabled. I uploaded it from a phone as I have always done.

And that sucks it isn't the headers. Now onto more digging.

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04-07-22, 06:38 PM

#384

svtec

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Quote:

Originally Posted by WReuroR

No idea why comments are disabled. I uploaded it from a phone as I have always done.

And that sucks it isn't the headers. Now onto more digging.

I believe it’s one of the cam phasers.. may want to check out the stickied thread near the top.

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04-08-22, 05:45 AM

#385

CCColtsicehockey

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Quote:

Originally Posted by svtec

I believe it’s one of the cam phasers.. may want to check out the stickied thread near the top.

Wouldn't that noise be coming from the engine bay and up too? If I open the hood and listen you hear nothing. It's only once I get to the side of the car.

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