Blown Motor, Engine Rebuild/Replacement.

COSMO · 02-27-2014, 09:32 PM

I spoke with bobby at vsr regarding my cracked gtm manifolds and he recommended shipping them down to his shop to have them welded and cryo-treating the manifolds. The cost would be $100 per set.

jwick · 02-27-2014, 10:11 PM

Quote:

Originally Posted by cosmogirl

I spoke with bobby at vsr regarding my cracked gtm manifolds and he recommended shipping them down to his shop to have them welded and cryo-treating the manifolds. The cost would be $100 per set.

I'm no metallurgist but I don't know if cryo-treating is what you want. As I understand it cryo-treating increases strength and hardness of the material. Harder material has a tendency to be more brittle. In a location that is going to constantly heat cycles, I'm not sure you want to have it be harder. I know we are very selective where we use high strength materials offshore.

I used to work with an engineer that knows a bunch about steel make up and thermal expansion. I'm going to try and get in touch with him and see if I can provide you with any additional information.

Nixlimited · 02-28-2014, 11:00 AM

Quote:

Originally Posted by jwick

I'm no metallurgist but I don't know if cryo-treating is what you want. As I understand it cryo-treating increases strength and hardness of the material. Harder material has a tendency to be more brittle. In a location that is going to constantly heat cycles, I'm not sure you want to have it be harder. I know we are very selective where we use high strength materials offshore.

But do consider that people (like Cosmo) cryo-treat their blocks, pistons, rods, etc, and all of those endure tons of heat cycling.

O&G · 02-28-2014, 11:12 AM

Quote:

Originally Posted by Nixlimited

But do consider that people (like Cosmo) cryo-treat their blocks, pistons, rods, etc, and all of those endure tons of heat cycling.

GTM manifolds are cast iron, non of the parts you listed are made of cast iron. We need a metallurgist to chime in, lol!

jwick · 02-28-2014, 12:32 PM

Quote:

Originally Posted by O&G

GTM manifolds are cast iron, non of the parts you listed are made of cast iron. We need a metallurgist to chime in, lol!

Beat me to the punch. Cast iron is a whole different animal compared to the steel used in the engine itself

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02-27-2014, 09:32 PM	#1 (permalink)
COSMO A True Z Fanatic Join Date: Dec 2012 Location: FL Posts: 1,816 Drives: 2012 Touring GTM TT Rep Power: 20	I spoke with bobby at vsr regarding my cracked gtm manifolds and he recommended shipping them down to his shop to have them welded and cryo-treating the manifolds. The cost would be $100 per set.