News:

This forum is run by RPM and donations from members.

It is the donations of the members that help offset the operating cost of the forum. The secondary benefit of being a contributing member is the ability to save big during RPM Holiday sales. For more information please check out this link: Membership has its privileges 

Thank you for your support of the all mighty FJ.

Main Menu

Pistons; Cast or Forged?

Started by SkyFive, February 10, 2011, 05:09:47 PM

Previous topic - Next topic
Print
Go Down Pages1
User actions

SkyFive

February 10, 2011, 05:09:47 PM

When I built my engine last year I reused the old Wiseco pistons, rings and cylinders dispite knowing they were scored and out of tolerance. I've been getting some smoke on acceleration and besides that I'm having trouble sleeping ever since so I've decided to do the top end this spring with new pistons, rings and cylinders. I've done some research on cast vs. forged, both having positives, negatives and price is almost equal. My main concern with forged is the weight and shrinkage. Can someone tell me how much heavier than cast they are, how much do they shrink and how fast do they shrink. 

ribbert

#1
February 10, 2011, 07:57:42 PM
I rebuilt my motor 15,000k's ago with Wiseco forged pistons and have none of the "rattle" I was told I could expect, especially when cold.  I weighed the old (original) and new pistons and the forged ones are approx. 40g LIGHTER - each!
Noel
"Tell a wise man something he doesn't know and he'll thank you, tell a fool something he doesn't know and he'll abuse you"
Print
Go Up Pages1
User actions