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Volvo RWD 140-160 Forum

INDEX FOR 11/2009(CURRENT) INDEX FOR 6/2009 140-160 INDEX INDEX (NO RELOAD) [<<]  [>>]

VIEW    READ ONLY    PRINT   SAVE   A    A  B20E 140-160 posted by  JohnMc on  Mon Jun 29 17:07 CST 2009 Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS]     [IGNORE ALL POSTS] last visit: Sat Nov 21 14:54 CST 2009 [RELATED] Ruins the squish, and it will make it ping worse. Actually, 10.8:1 isn't *that* bad with modern 93 octane pump premium as long as you build it with nice tight squish. Get a good measurement on the deck height of the pistons at TDC, then get a gasket (Cometic MLS or copper) of the right thickness for a tight .032" clearance to the head. The piston *almost* touching those flat sides of the head rather violently snaps the air into the combustion chamber area, which creates a lot of swirl that helps prevent detonation. Alternatives include enlarging the combustion chamber. One no brainer is to take the sides out to match the bore. Then make a little more clearance around the intake (unshrouding). Possibly shrink the island around the plug some, but bear in mind that those flat shelves are there specifically to promote squish. Here's what I did to an R-sport head I got on eBay. It came to me ridiculously shaved down, to something around 12.5:1 on top of a 2.0L bottom end, even worse on my 2.1L. I enlarged the chambers as much as I felt I could, and even then had to team it up with dished pistons (B21FT) that gave me another 12cc. Ended up in the mid 10's CR. With a nice tight squish it doesn't want to ping at all on 93 octane. With 87 octane regular, it will ping some. -- '63 PV544 rat rod, '93 Classic #1141 245 +t Mark this post as an answer to my question<- Use this feature to mark quality replies to your post. Select, copy to buffer, and paste anywhere: <a href="http://www.brickboard.com/RWD/volvo/1357295/140-160/b20e.html">B20E</a>

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• B20E [140-160]
  posted by  B20Paul.  on Wed Jul 1 01:53 CST 2009 > V

• B20E [140-160]
  posted by  walrus3  on Tue Jun 30 09:47 CST 2009 > V

• B20E [140-160]
  posted by  Chris Mullet  on Mon Jun 29 15:07 CST 2009 > V
  • B20E [140-160]
    posted by  JohnMc ONLINE  on Mon Jun 29 17:07 CST 2009 > V
    • Tight Squish is an internet myth [140-160]
      posted by  B20Paul.  on Wed Jul 1 01:36 CST 2009 > V
      • Tight Squish is an internet myth [140-160]
        posted by  Phil S.  on Wed Jul 1 11:24 CST 2009 > V
        • Tight Squish is an internet myth [140-160]
          posted by  B20Paul.  on Thu Jul 2 14:07 CST 2009 > V
          • Tight Squish is an internet myth [140-160]
            posted by  Phil S.  on Thu Jul 2 16:04 CST 2009 > V
            • Tight Squish is an internet myth [140-160]
              posted by  B20Paul.  on Fri Jul 3 02:26 CST 2009 > V
              • Tight Squish is an internet myth [140-160]
                posted by  Phil S.  on Fri Jul 3 15:37 CST 2009 > V
                • Tight Squish is an internet myth [140-160]
                  posted by  B20Paul.  on Tue Jul 7 06:32 CST 2009 > V
                  • Tight Squish is an internet myth [140-160]
                    posted by  Phil S.  on Tue Jul 7 15:58 CST 2009 > V
                    • Tight Squish is an internet myth [140-160]
                      posted by  B20Paul.  on Wed Jul 8 10:12 CST 2009 > V
                    • Tight Squish is an internet myth [140-160]
                      posted by  Charlie142  on Tue Jul 7 21:53 CST 2009 > V
                      • Tight Squish is an internet myth [140-160]
                        posted by  Phil S.  on Wed Jul 8 15:08 CST 2009 > V
                        • Tight Squish is an internet myth [140-160]
                          posted by  B20Paul.  on Thu Jul 9 14:28 CST 2009 > V
                          • Tight Squish is an internet myth [140-160]
                            posted by  Phil S.  on Thu Jul 9 15:02 CST 2009 > V
                            • Tight Squish is an internet myth [140-160]
                              posted by  B20Paul.  on Thu Jul 9 17:41 CST 2009 > V
                      • Tight Squish is an internet myth [140-160]
                        posted by  B20Paul.  on Wed Jul 8 10:24 CST 2009 > V
                • Tight Squish is an internet myth [140-160]
                  posted by  Charlie142  on Mon Jul 6 21:38 CST 2009 > V
                  • Tight Squish is an internet myth [140-160]
                    posted by  B20Paul.  on Tue Jul 7 06:39 CST 2009 > V
    • B20E [140-160]
      posted by  Phil S.  on Tue Jun 30 10:48 CST 2009 > V
      • B20E [140-160]
        posted by  B20Paul.  on Wed Jul 1 01:42 CST 2009 > V
        • B20E [140-160]
          posted by  rawits  on Thu Jul 9 12:41 CST 2009 > V
          • B20E [140-160]
            posted by  B20Paul.  on Thu Jul 9 14:18 CST 2009 > V
            • B20E [140-160]
              posted by  rawits  on Thu Jul 9 15:44 CST 2009 > V
              • B20E [140-160]
                posted by  B20Paul.  on Thu Jul 9 17:24 CST 2009 > V
                • B20E [140-160]
                  posted by  Phil S.  on Fri Jul 10 09:19 CST 2009 > V
                  • B20E [140-160]
                    posted by  B20Paul.  on Fri Jul 10 10:46 CST 2009 > V
                    • B20E [140-160]
                      posted by  Phil S.  on Fri Jul 10 12:53 CST 2009 > V
                • B20E [140-160]
                  posted by  rawits  on Thu Jul 9 17:33 CST 2009 > V
                  • B20E [140-160]
                    posted by  B20Paul.  on Thu Jul 9 18:05 CST 2009 > V
      • B20E [140-160]
        posted by  Charlie142  on Tue Jun 30 20:42 CST 2009 > V
    • B20E [140-160]
      posted by  matt b  on Mon Jun 29 22:09 CST 2009 > V
      • B20E [140-160]
        posted by  benski  on Tue Jun 30 09:50 CST 2009 > V

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