Cryogenic Ring and Pinion Treatment

[eric90503]

Moving to 5.29’s and have been reading up on cryotherapy to increase durability. The latest thread I could find on cryo treatment is from 2013. Seems it was used a lot in the mid-2000’s for the 40 series.

Thoughts on cryo treatment of R&P or other parts such as bearings and axles? It seems cryo doesn’t help much for 4340 front axles, but might be a good treatment for the stock rear axle. Anyone using cryo these days? Thoughts?

Harrop FZJ80 488 Nitro Gear install

ZUK shares many close-up good pics of Toyota gear installs

gearinstalls.com

Here's a few pics of what got frozen on mine. It's been about 6yrs and knock on wood nothing broken. Just get it done, peace of mind.

 

[Three oaks 80]

Harrop FZJ80 488 Nitro Gear install

ZUK shares many close-up good pics of Toyota gear installs

gearinstalls.com

Here's a few pics of what got frozen on mine. It's been about 6yrs and knock on wood nothing broken. Just get it done, peace of mind.

Thank you for sharing. This snippet of the article really

Has anyone ever done a super finish on their gears? Because it seems that the main goal is eliminating contact fatigue and wear.

 

[Road Apple]

Thanks for bringing this up @Three oaks 80 . I’d never hear of super finishing.

Processes such as honing, tape polishing, super grinding, and vibratory finishing are a few of the methods that one can employ to achieve a superfinish.

Isotropic Superfinishing | Gear Solutions Magazine Your Resource to the Gear Industry

gearsolutions.com

 

[scottryana]

Like I said WPC and cryo. WPC is about as super as you can get. lol

 

[Road Apple]

Like I said WPC and cryo. WPC is about as super as you can get.

Thanks @scottryana. I glazed right over the acronym WPC in your earlier post. The video demo is impressive. Where are you going to have the WPC done?

 

[scottryana]

Thanks @scottryana. I glazed right over the acronym WPC in your earlier post. The video demo is impressive. Where are you going to have the WPC done?

I am pretty certain WPC can only be done by 1 place in the US.

WPC Treatment | Torrance CA

WPC Treatment, Torrance. 26,270 likes · 5 were here. WPC is a treatment that enhances the surface to reduce friction and strengthen metal parts. Explainer Video: https://youtu.be/vOSOYms7wiA Current...

www.facebook.com

 

[Road Apple]

I am pretty certain WPC can only be done by 1 place in the US.

WPC Treatment | Torrance CA

WPC Treatment, Torrance. 26,270 likes · 5 were here. WPC is a treatment that enhances the surface to reduce friction and strengthen metal parts. Explainer Video: https://youtu.be/vOSOYms7wiA Current...

www.facebook.com

Just talked to Izumi at WPC. Pricing is about $250 for the 9" ring and pinion set and $200 for the the 8".
Couldn't find anyone in the San Francisco area that knew what super finishing or WPC is.
Thanks Scott

 

[nukegoat]

You guys and your turd polishing

 

[Road Apple]

Dropped off a set of Nitro 5.29’s and bearings for Cryo treatment at Garner Heat Treating in Oakland, CA.

Their price is $95 up to 50 pounds, which covers both gears and bearings. They use a dry treatment process that lasts about 3 days. They typically run Cryo once a week.

Other SF Bay Area shops charge as much as $350 plus $2 per pound. Pricey!!

Here are a few pics of the tank at Garner.

 

[Dreamin Wheelin]

This past weekend I blew up my second set of ring and pinion in the front in less than 1 year. I am running 40s, rcv chomoly, 5.29 and no truss. I assume adding a truss will help. I keep burping grease into my front diff so I change the diff oil every big Offroad trip. Would a bent housing cause my ring and pinion to fail? I also assume I need to cryo my next set of 5.29s. I have had no issues with the rear.

 

[Road Apple]

This past weekend I blew up my second set of ring and pinion in the front in less than 1 year. I am running 40s, rcv chomoly, 5.29 and no truss. I assume adding a truss will help. I keep burping grease into my front diff so I change the diff oil every big Offroad trip. Would a bent housing cause my ring and pinion to fail? I also assume I need to cryo my next set of 5.29s. I have had no issues with the rear.

Your housing would have to be bent enough to cause extra bearing pressure and heat. Checking diff temperature with an infrared thermometer after driving would tell you right away. Even comparing temp by feeling the pumpkins after driving would give you a good indication.

Driving style could be a contributor. Are you spinning the tires often in rocky terrain? Using skinny pedal to get over obstacles or are you crawling? Pulling people off the trail or other repeated high load moments will cause failures too.

You’re right though. Blowing 2 sets of ring and pinions in a year is a sign something is wrong. Not sure cryotherapy will protect you from breakage until you find your gremlin.

 

[jcardona1]

I am running 40s

Here, I'll save you some time ^

 

[scottryana]

Yep, LC axles are fairly strong for their original intended purpose but it sounds like maybe you’re way beyond that.