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Engine E458K piston ring set problem... large gap

  • Thread starter Thread starter Boricua86
  • Start date Start date Sep 24, 2018

Boricua86

Active Member
Jul 17, 2016
86
40
38
Milford, Michigan
Sep 24, 2018
#1
  • Sep 24, 2018
  • #1
I put the rings inside the cylinders, I squared them off, and measure the gap..... my problem is that I am getting .026 and up.... brand new set shouldn't be like this this... right?
 
Last edited: Sep 25, 2018

08GT500

5 Year Member
Jul 12, 2018
918
140
63
Massachusetts
Sep 28, 2018
#2
  • Sep 28, 2018
  • #2
Hi!
1) You have Rings for a Bored out 302, not as yours is.
2) Your Cylinder(s) is/are Worn, push the Ring to the very bottom of the Bore & measure the Gap there. When older, Bores tend to Bellmouth out. Bores get Tighter at the bottom, looser up Top.
3) You don’t have the Ring square in the Bore, try using a Piston to push it in, get it Square.
4) put an old Ring in and see what the clearance is.
5) put the new Ring over the old, on top, see if there’s differences.
6) rotate the Ring 90 degrees and see what happens, the old and new Rings.
One of these may help. Post what you find so you can receive more accurate responses. TX, John
 
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