Ring gap on KB Hypereutectic pistons
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 952
Likes: 44
From: NC
Ring gap on KB Hypereutectic pistons
On the sheet that came with the pistons it stated the top ring needs to be gapped at 26 thousanths, but I cant find what the second ring should be. Does 16 sound about right? I know the keith black hypers are different because the top ring is placed so close to the top of the piston. Higher heat causing the ring to expand more. I didn't know what the second ring should be.
Thanks for the info, back to studying for finals...
James
PS Sorry for my spelling errors
Thanks for the info, back to studying for finals...
James
PS Sorry for my spelling errors
Drifting
Joined: Apr 2002
Posts: 1,716
Likes: 4
From: New Baden Illinois
Keith Black's website does not mention any special clearances for the 2nd ring. Here is their info on the top ring.
http://www.kb-silvolite.com/clearance_pop.php
http://www.kb-silvolite.com/clearance_pop.php
Drifting
Joined: Feb 2005
Posts: 1,738
Likes: 2
From: San diego ca
Keith Black's website does not mention any special clearances for the 2nd ring. Here is their info on the top ring.
http://www.kb-silvolite.com/clearance_pop.php
http://www.kb-silvolite.com/clearance_pop.php
Right on that page it says " NOTE: Second ring end gaps do not need extra clearance"..
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 952
Likes: 44
From: NC
Thanks for the info and on that page.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
For 4" bore street-performance 350sbc:
Set the top ring gap to KB specs ... wide ... because of KB's bastard short top land.
Set the 2'nd ring gap to 0.020"-0.022" ... (0.005" gap per 1" of bore) ... this well-established spec in accordance with recently-published procedures (2005) by speed pro/federal mogul/sealed power.
as an ME student ... I strongly suggest you apply for membership in SAE ... they have special rates for students ... lotsa GREAT contacts to be made ... very good publications ... and ready access to all SAE standards ... including ring specs. Wish you continued success in your studies & hobby. www.sae.org
Set the top ring gap to KB specs ... wide ... because of KB's bastard short top land.
Set the 2'nd ring gap to 0.020"-0.022" ... (0.005" gap per 1" of bore) ... this well-established spec in accordance with recently-published procedures (2005) by speed pro/federal mogul/sealed power.
as an ME student ... I strongly suggest you apply for membership in SAE ... they have special rates for students ... lotsa GREAT contacts to be made ... very good publications ... and ready access to all SAE standards ... including ring specs. Wish you continued success in your studies & hobby. www.sae.org
Last edited by jackson; May 4, 2007 at 11:37 AM.
