Carter

they shove metal into metal where do you get your information from?


http://members.ozemail.com.au/~mtce/peeninfo.htm

Boosted2003

haha i dont know how to explain it.

ToyotaTechGeek

wrong. it's sort of like blasting whatever metal with some really hard BB's. this is supposed to create a sort of forging effect. it makes the metal more dense. polishing or stress relieving is what helps to reliev the stress. and when you do it, do it longitudinally in referrence to the rod.

Boosted2003

thats that i tought they used was bb's. And it sorta reforms the better on the surface.

Yeah, to get the rods cyro treated and peened cost is 300+ shipping. New pauter rods at 720. Im leaning to aftermarket still.

keyd

Shot-peening is used to "stress-relieve" parts. Tiny pellets are blasted at the surface of the part to relax sections of the metal. Stress is created when a part is machined, so shot-peening is used to relax those sections of the metal. A lot of times a part will get shot-peened multiple times (after each step in the machining process).

MORE IMPATIENT

after researching and comparing for about a week or so when i was considering doing the same thing , shot peening is just a band aid, buy some forged rods that are ready to get the crap beat out of them, youll be more satisfied with the lighter weight aftermarket internal and you can achieve a more efficient rotating assembly and youll have the mental happiness knowing your rods can take just about whatever you throw at them..........

audiophile24

so what about the crank most neglect o do anything to it so what should be done to keep the crank together? i know the rods can hold up but what about the poor crank?

keyd

Crankshafts need to be balanced. One with only two ounce-inches of imbalance at 2,000 rpm will be subjected to a force of 14.2 lbs. At 4,000 rpm, the force grows to 56.8 lbs. Double the speed again to 8,000 rpm and the force becomes 227.2 lbs.