Thats a good point.

Thats kind of what I am planning to do if its not too exspensive.

I am hoping the place I am getting the qoutes from can answer that question too.

I already have a spare LS short block in the garage with a new B16 head I plan to put on it, whenever I get around to it or when the LS thats in the car now blows, which evercomes first.

The plan was originally to move to the LS/Vtec motor and look for 300WHP .... but like I said I have seen at least one LS/Vtec making 350 on a stock bottom end and I would think cryo treated rods/pistons could only increase the longevity of the set up. And since I already have the stock rods pistons to spare I would only be out the cost of the cryo treatment and then the cost of remachining if needed .... I just need to find out if thats enough of a savings over forged rods/pistons to merrit trying it.

Not that forged internals are in my price range .... if this proves too pricey I will be LS/Vtec on a stock bottom and hopefully 300whp ....

 

a couple things, I imagine it would be pretty expensive, but that is just a guess
you don't want to do this to pistons, they are aluminum
any time you make any given material harder, you make it more brittle, and brittle fracture is what happens when you detonate.
the overall strength of something depends on the material, for example you can cryo treat a piece of poop and its just going to be cold poop
If you can get it done cheaply, to rods and crank it might not be a bad idea, but I have a feeling that getting rods done might cost more than a decent set of rods

 

Some decent info from the H-T thread :
"CRANKSHAFTS AND RODS: Reducing the stress from the large mass made up of the crankshaft and rods can help them stay more in balance allowing for improved performance with reduced wear and breakage.


PISTON ASSEMBLIES: The piston assemblies should not be treated with the rings installed on the pistons. Wrist pins should not be treated at all. Treating the piston assembly will help the pistons and rings remain round therefore maintaining a better seal which translates to more constant compression , improved performance and reduced breakage.


HEADS: Heads both cast and aluminum are less prone to distortion and breakage following the Cryogenic treatment. If you have a set of good heads that are cracked send them to a good head repair company. They will grind out the crack, build up that portion that was cracked and machine it back to original specs. All these steps put stress back into the head, left untreated this will cause distortion and cracking can occur. Cryogenic treatment should be applied to the heads following repair then the finish machining can be done. "

I'm not sure if they're speaking of aluminum pistons or not , but they reccomend treating aluminum heads

 

You guys are wrong about some of what happens in cryo treatment. The heat treatment forces metal molecules to reorganized themselves, thus destressing the piece of steel. Doing so, this dramatically increases wear resistance and considerable increases both compression and tensile strengths. This wont make the metal brittle, it will actually makes things less brittle. Either way, pistons and rods are see serious compression and tensile pulls; since they are in a block that wont allow for them to sway, so they can be plenty brittle.

I guess cryogenic processors arent very expensive since they sell for under $70k

I found a place that will do cryo treat pistons and rods for $30 per piston and per rod.
I'll contact them on Monday and let you guys know.

 

 

Wrist pins defintely are treated just as the pistons and rods.
I dont understand why anyone would want to have the head treated. The head iteslf isnt exposed to stresses that steel or aluminum cant handle. The valvetrain would obviously be benficial to treat, but not the actual head.

 

I would like to know who does them for 30 per, I am still waiting for a quote from 300below.com

 

this was done to my lsvtec pistons, company in portland did it. ive heard about not doing the rods because you actually want the rods to not be stiffer than ----. all it does to pistons is ensure that the ring langs r a bit stronger. in my opionion unless you get everything done for less then 30 bucks its a waste of time, might as well just get some scat rods or somthing.

 

4 rods + 4 pistons = $75 .... Ima do it.

Probably not for a little while, but might as well.

I think I am gonna run this LS motor for what its got , hopefully by the time it gives out I'll have the B16 head on the spare LS bottom end I have and swap that in and shoot for 300-310 WHP and while thats goin I plan to teardown the original LS motor and attempt my first rebuild of a Honda motor. With cryo treated rods/pistons. Swap that bottom end in and see how long it will hold ...... 350whp maybe try out 370 ....IDK...we'll see

I figure if a stock bottom end can hold 350whp then a rebuilt one with cryo'd rods/pistons definately can. Mainly wanting to use that motor to test out my ability to build a honda motor, and see if it would be wise to build a forged bottom end myself in the distant future , or if that would be a waste of time/money/forged internals.

 

Hey man, thats awesome.
I'm really excited to hear the results.

Make sure you keep us updated.