Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Cylinder diameter VS. piston diameter
View Single Post
  #13 (permalink)  
Old 01-29-2010, 01:47 PM
Intense RT Intense RT is offline
Engine machinist/builder/cnc
Join Date: Jan 2010
Location: Mooresville, NC
Age: 44
Posts: 51
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by sbchevfreak
Believ it or not, they do run a slight interferance. From the engine mechanical specs for the 6.2L LS3:

Piston - Piston to Bore Clearance - Production
-0.036 to +0.016 mm
-0.0014 to +0.0006 in

They fit them from a rather tight interferance to a slight clearance. Different...
Thanks for the tech specs. Never got around to checking into it. I was also vague on purpose, lol, if I said a full thou or more (and I didn't know exactly) someone would have argued. I was just generally informed with no exacts given.

Just to add, people have to keep in mind the cyl diameter itself expands also. In a marine app running ~70* coolant you need more piston to bore clearance(~.005 with 2618 pistons) due to the cool temp coolant keeping the cyl diameter from increasing.

Last edited by Intense RT; 01-29-2010 at 01:54 PM.
Reply With Quote