Need help with cracked turbo manifold

Blackcrimzon · 06-11-2020, 06:14 PM

Quote:

Originally Posted by Rusty

You have to find out if cast iron, cast steel, or stainless steel. My bet is cast iron.

For welding cast iron. The each end of the crack have to be drilled. The crack V'ed out. Ti welding would be best with Ni-Rod 99. Bolt the manifold to a thick steel plate. Pre-heat the manifold with a oxy-ace torch to about 600F and try to hold it there during welding. After done welding. Peen the weld with the ball end of a ball peen hammer. Wrap in insulation and allow it to cool to room temp before removing the insulation.

I am not sure what it is though I believe its cast iron. I am hoping that HKS will be able to tell me more. I'll be taking my car into a shop on Monday for them to fix it and they believe that they can get it welded up. I would like to find some that are made from stainless steel however so that this will less likely happen again. Maybe some of you can tell by looking at the parts that they are made of. This is the original for sale thread of the kit I have on my car One and only 370z complete hks demo car twin turbo kit.

Does anyone have experience with getting the manifold crack fixed through welding? As long as its done right will it hold up?

Rusty · 06-11-2020, 06:46 PM

See if a magnet will stick to the manifold. If it doesn't stick. It could be a 300 series of stainless steel. If it sticks. It could be cast iron, cast steel, or a 400 series of stainless steel. 300 series of stainless steel doesn't rust. 400 series of stainless steel will.

They have been weld repairing exhaust manifolds for decades. It all depends on the skill and knowledge of the guy doing it. I've done a lot of cast iron welding when I for for Elliott TubroMachinery. Some of it, we had to pre-heat to 1,200F before we could weld on it. It was glowing red.

Elmo370z · 06-11-2020, 09:58 PM

Quote:

Originally Posted by Blackcrimzon

I am not sure what it is though I believe its cast iron. I am hoping that HKS will be able to tell me more. I'll be taking my car into a shop on Monday for them to fix it and they believe that they can get it welded up. I would like to find some that are made from stainless steel however so that this will less likely happen again. Maybe some of you can tell by looking at the parts that they are made of. This is the original for sale thread of the kit I have on my car One and only 370z complete hks demo car twin turbo kit.

Does anyone have experience with getting the manifold crack fixed through welding? As long as its done right will it hold up?

Rusty is trying to tell you what to do.

Rusty · 06-11-2020, 10:16 PM

Quote:

Originally Posted by Elmo370z

Rusty is trying to tell you what to do.

I'm just telling him on how it should be done.

Elmo370z · 06-11-2020, 11:24 PM

Quote:

Originally Posted by Rusty

I'm just telling him on how it should be done.

He will go another route

06-11-2020, 06:46 PM	#2 (permalink)
Rusty A True Z Fanatic Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 70 Posts: 35,571 Drives: 2011 Nismo GM 6M Rep Power: 2684440	See if a magnet will stick to the manifold. If it doesn't stick. It could be a 300 series of stainless steel. If it sticks. It could be cast iron, cast steel, or a 400 series of stainless steel. 300 series of stainless steel doesn't rust. 400 series of stainless steel will. They have been weld repairing exhaust manifolds for decades. It all depends on the skill and knowledge of the guy doing it. I've done a lot of cast iron welding when I for for Elliott TubroMachinery. Some of it, we had to pre-heat to 1,200F before we could weld on it. It was glowing red. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

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