Cryogenic Treatment of Parts

Hi everyone,

I know this question was been asked before, but it has been a few years. In an alcohol application, what are the pros and cons (cost) of cryogenically treating the short block, head assemble, flywheel, hat and driveline parts? Is anyone doing it on a regular bases and if so what kind of results are you receiving?

Thank you in advance for any comments.

Mark

 

If memory serves me I posted on this subject before.
Did a steel crankshaft and was very happy with the results.
I do not see much purpose in doing a block or heads.
Ring and pinion That could prove worth while ? but I think leaving a little spring in the alloy of the gears is probably a better way to go. That is why racing gears have higher Nickle in them. Better to have them wear and flex then break.
Same with axles and driveshafts I would perfer to barber pole the part than sheer it.
Think about rod bolts, head studs they need to stretch to function properly.
Now I have no experance with cryogenically treating aluminum but if doing so would reduce flex on a set of blower rotors that would be a big help.
The flywheel and hat are SFI so doing that is a BIG no no.

 

We do Cryo here at Ace, but generally we only cryo steel cranks, steel rods, and steel tranny gears.

As far as cryo treating clutch parts(and blocks), with aluminum and titanium, it isn't worth it. The parts are plenty strong enough and cryo doesn't do much for aluminum or Ti. As far as cryo treating steel heat shields and floaters, it isn't worth the cost offset. I have never seen a difference in a cryo'd floater or heat shield vs. a regular stress relieved one. Mostly because the steel in a clutch in a blown car gets red hot when it runs. I've seen heat treated/black oxided 4140 HUBS in discs that have been in a top fuel car that come back purple. The HUBS!

 

We cryoed alot of aj parts and never seen a big differance we did all of the parts including bearings we only seen improvements in valve train parts we sent the rods back to brooks after we had them done they wanted to see if they could find any advantage by it and didnt really see much actualy we seen the most improvement in lash caps and we never broke another one even if they flew out the guy who did ours is a buddy of mine and he builds racing airplane engines and he does the whole engine and he says he can tell a differance in machining a cryoed part

 

Mondello does all mine and I wouldnt do a motor without it now. Rotor's, valve springs, rods, cranks, block, heads, all critical componets. I tell you for sure do a set of brake rotors and see if they dont last better. My car is heavy 3500 lbs and before doing my rotors I would warp a set in a season, I stopped the car with no chutes @ pbir this year on one run over 190 and never warped a rotor all year.
We do bearings as well. If you have something you want done, give Bret a call @ Mondello's we are getting ready to run some more parts soon.
931-459-2760
Great stuff for sure.