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Author Topic: Cryogenic hardening of engine parts  (Read 6861 times)

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Offline 2budzracing

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Cryogenic hardening of engine parts
« on: April 10, 2011, 10:48:48 am »
ran across this yesterday and did a little research,most of the big engine builders do it on high revving engines and also drive components like brake rotors,drive shaft yokes,splined shafts etc. Would this not work to solve 'soft' cams etc.? there is a video showing them doing blocks ,cams, cranks,and all kinds of stuff.Has anyone tried this? I also spoke with one of my high end engine guys and he says instead of this for 1/2 the cost he does this thing called 'spray coat' that he puts on everything that moves and after bakeing it in he says its better than teflon coating by far.He also ceramic coats piston tops but since we don't run nitrous or race fuel thats not needed.Really interested in this Cryo stuff chime in if you know anything about it....
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Offline Huffy044

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Re: Cryogenic hardening of engine parts
« Reply #1 on: April 10, 2011, 11:12:30 am »
I considered this for my shift keys, it was pricey enough I drcided to put the money into new keys! Grubdigger did some stock rods years ago and as far as I know they are still in the engine and working. I definiately see the benifits,
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Offline sandsnipe

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Re: Cryogenic hardening of engine parts
« Reply #2 on: April 10, 2011, 12:24:32 pm »
After some reading this company does cryogenic traetment at a reasonable rate.
They have a rate schedule on the web site, there is a 50.00 min order. But with
the size of our parts, you could theoretically get springs, push rods, rockers, piston,
rod, and crank done. They also do sleeves, and blocks. If the process toughens aluminum
enough you might not need a sleeve.
www.nitrofreeze.com/cryogenic_treatment.html?
www.nwcryo.com/index.htm
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Offline Lambo

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Re: Cryogenic hardening of engine parts
« Reply #3 on: April 10, 2011, 05:56:50 pm »
Did it to my gearbox. Don't have enough time on it to tell yet, but so far, so good.

Lambo
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Offline 2budzracing

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Re: Cryogenic hardening of engine parts
« Reply #4 on: April 11, 2011, 10:27:21 am »
I was wondering if you could do EVERYTHING in the whole motor? I think if you were to polish all journals before you did it then everything should last forever.....well maybe....the video I saw on u-tube said it makes parts last 60% longer??? There is one place in so-cal that does it gonna call them today for prices.
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Offline 2budzracing

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Re: Cryogenic hardening of engine parts
« Reply #5 on: April 11, 2011, 12:47:58 pm »
WOW I found THE place to do mower engines for cheap! NW Cryogenics will do a complete 16hp briggs (for instance) for $125.This guy does all the mini dragster, m/x ,snowmobile etc. engines.Very familiar with the briggs motors.He says that doing this procedure usually yields about 20% more hp on the dyno with bone stock motors! He says it's better to get them polished AFTER it's done because it turns out way better.
check out thier website it has price list and all kinds of info there!


other places I checked want $300ish to do the same thing and don't know squat about our motors....

NW cryogenics 661-349-7889 talk to Rick .......very informative guy.tell him I sent you!
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Offline BIG AL 202

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Re: Cryogenic hardening of engine parts
« Reply #6 on: April 11, 2011, 10:15:06 pm »
CERAMIC COATINGS DO MAKE A DIFFERANCE, ALONG WITH TEFLON ON THE SKIRTS. THE CERAMIC ON THE PISTON TOPS KEEPS HEAT [HORSE POWER] IN THE COMBUSTION CHAMBER WHERE IT BELONGS. ALL THE MOTORSPORTS AT THE PRO LEVELS AND FOR THAT MATTER COMPETIVE NON PRO RACERS HAVE BEEN USING THAT WITH GREAT SUCCESS. I HAVE A FRIEND THAT OWNS A COATINGS PLANT AND HAVE SEEN DYNO SHEETS, AND OTHER TESTING. THIS STUFF REALLY WORKS!!! HE COATS INSIDE HEADS TOPS OF PISTONS, EXHAUST PIPES, INSIDE AND OUT, VALVES, AND EVEN PORTS. ANYWHERE YOU NEED TO CONTROL HEET. WHILE HARDENING IS BEING TALKED HAS ANYONE USED KASENIT. ITS FOR CASE HARDENING  .O15 DEEP?
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Offline 2budzracing

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Re: Cryogenic hardening of engine parts
« Reply #7 on: April 12, 2011, 10:02:49 am »
dunno but cryo hardening isn't like surface hardening it does the entire part not just the outside.Talked some with Rick yesterday and we have alot of mutual friends including Bobby Cleveland.He was at bonny on the last run with him.
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Offline BIG AL 202

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Re: Cryogenic hardening of engine parts
« Reply #8 on: April 12, 2011, 01:16:22 pm »
do you know what rockwell  cryo hardens to? wouldn't think you would need it all the way through for what we do.
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Offline GRUBDIGGER

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Re: Cryogenic hardening of engine parts
« Reply #9 on: April 12, 2011, 05:23:48 pm »
IVE DONE THIS TO MY STOCK RODS. THEY SAID THEY WILL TURN 10,000 RPMS. 2 YEARS LATER NO PROBLEMS. VERY HAPPY WITH THIS SINCE NO ONE HAS RODS FOR A KAWASAKI V TWIN.
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Offline sandsnipe

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Re: Cryogenic hardening of engine parts
« Reply #10 on: April 13, 2011, 11:11:52 am »
Cryogenic treating of parts is more of a toughening reather than hardening.
Like oak is a fine grained wood is stronger than pine a corser grain.
The process alligns and tightens the particles of the metal, making it tougher.
Much like a forged part is tougher than a case part.
Not like surface hardness, it works through the whole part.
If there are weaknesses in the part it won't cure that.
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Offline BIG AL 202

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Re: Cryogenic hardening of engine parts
« Reply #11 on: April 14, 2011, 12:36:57 pm »
SO IS THE PART MACHINABLE? I DO UNDERSTAND WHAT IS HAPPENING TO THE PART AND IT SHOULD BE MACHINABLE, CORRECT?
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Offline sandsnipe

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Re: Cryogenic hardening of engine parts
« Reply #12 on: April 14, 2011, 12:44:09 pm »
From my understanding yes it is machineable.
The recomendation is to machine first, treat and polish last.
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