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Put a summer on my CX turbo kit. Grabbed headers etc. Maybe 500 miles on it all street and beating the **** outa it. I pulled the hotside and removed the eBay header wrap as I知 in the process of coating everything with creakote ceramic coating. Found this on the pass front primary. It was cracked 3/4 of the way around in a clean break. I had no idea, no noise or carbon marks... still none on the piping as it hasn稚 been cleaned in the pics. The inside of the hotside looks very clean, very little carbon... maybe bc the meth is steam cleaning it when boosting? Either way I知 glad I pulled everything and removed the wrap. Looks like I知 not going to wrap after coating bs this would have been dead obvious with no wrap on it.
Did you not see lean condition and way positive short term fuel trims on that bank? I have had my hotside crack at a reducer portion (no weld there) of a cheap pep boys mild steel reducer that I used. Knew pretty quick because that bank got lean. I cleaned it up, sheathed it up, and migged it up lol
I agree, basically no filler rod. Scary is that most of the welds on the headers look like that. Hopefully no more cracks.
I didnt see anything but then again I never looked lol. I run the ultimate LS fitech EFI system so its constantly adjusting fueling (i have it set to global and not individual banks since it merges to single turbo) so it could have been compensating and I would have no idea. Car ran fine up to 15psi. I know why it cracked but what I dont get is that I couldnt see or hear the leak. The lack of carbon has me baffled and how it didn't blow through the wrap.
If you are worried about it breaking again just sheath it.
Be careful getting into boost when you get it back up and running again. You might have been bleeding off a few lb's from that hole.
"sheath it"? whats that?
I'm not worried about that part breaking... I Tig'd it up with some 308 rod ad I know my weld wont break. But there are like 20 welds that are there's on the headers that could go at any time lol. Each header has about 4-6 welds/pieces of primary tubes before the collector like they piece them together, and some I don't have access too if they crack as they are literally touching another primary.
Give it another season without coating so not to waste the money and to make it easier to repair if your chasing any more
the only way to get away without filler is to pulse at least 100 pps an back purge
those welds on all those offshore headers are only about 1.5pps
1.5 looks more pleasing but unless your heat setting are set perfect without filler this will happen every time
the company I buy my bends from does all sorts of work for beer and milk factories and they use mega high pps and back purge with no ditching at all as they polish the tubing inside and out after weld
the company is Rodger Industries
check them out sometime
I have used a couple of there truck kits both cracked in less than a year. that is why I started making my own manifold based kits. there newer cast manifold is a lot better.
11-28-2018, 11:46 PM
Hotside primary cracked 3/4 way around wtf 
