Cryogenic Technical Articles Options

[lmcchesney]

I have reviewed all the messages from the foum regarding cryogenic processing of engine parts. However, it lacks good/significant documentation regarding the different processes done.
Does anyone know the source of technical articles regarding this process.
There must be some University site with this information.
Yes, I have searched the MIT site without success.
Anyone have the information?
Thanks,
L. McChesney

[Jake Raby]

FYI, Right now I'm making a special fixture that will be capable of testing lifters and cams directly with variable spring tensions and Then I'll be able to accurately test lifters in an environment exacting the engine.. (its made from an engine case powered by a 10HP electric motor and has an "Oil heater" to get oil to running temps.)

I'm not doing this to test cryo, but rather to see what lifters and cams work and what don't when cycled the same amount of time.... Do you think I'll make a buck off of it- probably not because I don't make cams or lifters.... I'm doing it to create a device that I can run my cams and lifters in to cycle them before installation to look for wear and etc.... The severe issues with cams and lfters at the present are requiring us to use ceramic lifters in every engine to avoid failures and customers are not willing to pay the extra so we cannot do jobs!

When I'm done with it I'll have 4 lifters cryoed and 4 not cryoed and jack the spring tensions to over 500 pounds and run them in the same fixture and see what happens... if anything is gonna happen it will with that severe of spring tension. There are always variables so the only way to do it would be to run 4 lifters on one side of the cam and then at half way stop and run them, in the opposite sides and see which ones are worn mre when we are done....

My cryo"proving" has come from my personal vehicles (5 of them) and 7 different full race engines that have had it done. For instance I had a 1600 offroad engine that kept snapping valve springs. No matter what we tried the springs were breaking from the outrageous lift and fast ramps on the cam. (we did not want to change his arrangement because he had the strongest engine in the field and had the championship for 3 years running already with that combo- he just broke springs once a month) I had a set of the same springs cryoed and the issue simply stopped. That engine has not been apart now for 2 years..


Another example was in my bus engine. I adjusted the valves on the bench when I built it. It went through 3 days of dyno work and 15,000 miles before the first valve needed to be adjusted- I checked them every 1-2 thousand miles and they stayed spot on all the way to 15K, when one of them finally moved and needed backing off. That engine has 45K on it now and some valves still have not been adjusted- just checked.

I did 3 engines for a manufactrer of a special dune buggy kit car. The owner of the company wanted one engine for himself so he sprung for the cryo on just that one. All engines were set up exacting. He uses these for riding trails out west and puts tourist behind the wheel so hw wanted torque... When I dynoed the engines one of them ran almost 25 degrees cooler the entire time- it was the one that had been cryoed.

About the best example is a good friend of mine that is actually a professional "Go Kart driver" this guy goes through engines like butter. He built an engine, dynoed it and then tore it down and had the cryo guys treat it. Then he rebuilt it 100% the same way and redynoed it.. The difference was about 3 HP (But on a small engine thats alot)

I have never had the time to build an engine, dyno it, then tear it down and treat and then rebuild/test it... One day when I quit being 50% of the engine workforce here I'll do it and try to peove it..

what I have learned lately is that guys on the net will even argue with raw data, so that pretty much renders testing nil.... If someone has the initiative and drive and desire to test something and believe in it- have the common courtesy to listen. If not, we may find ourselves in a world where testing is not even done anylonger by anyone because its worthless (we're almost there now)

Testing is the most expensive and time consuming/nerve racking thing in the world- its multiplied 5 fold when people who have not tested, or even experienced doubt your data.

I just finished spending 5,847.00 in test work for type I cooling systems... The system that I sell did horrible in the testing but I continued anyway because had the dyno set up already and etc. When I was finished I posted a few comparisns and people wanted to question how it happened.. well to say the least that set me on fire.

In my professional opinion:
CRYOGENIC ENHANCEMENT WHEN DONE CORRECTLY IS A BENEFIT TO THE AIRCOOLED ENGINE.

I think the main issue is that guys cannot see or feel a difference in their parts after the process and that makes it hard to deal with....