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B20E Head height 140-160

posted by Gary L on Mon Aug 8 04:23 CST 2005
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last visit: Wed Oct 22 10:26 CST 2014

[RELATED]

Can anyone tell me what the minimum safe height might be on a B20E head (with respect to valve-to-piston clearance) using a stock "D" cam and 0.030 head gasket? I had to have the head on my ITB race engine resurfaced, and I want to make sure I'm not in parts-kissing territory. The block has been zero-decked, by the way... pistons are AT block deck height, NOT below. My preliminary measurements (I'm taking it back to the machine shop for a 2nd opinion) show the head is currently 0.050"/.3mm below the stock height of 3.33"/84.8mm.

On a separate but related subject... any educated guesses as to what compression ratio would result from the above numbers? Combustion chambers are unmodified, bore is .030" over.

Thanks in advance.
--
1971 142E ITB racer, 1973 1800ES, 2002 S60 T5

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B20E Head height [140-160]
posted by Gary L subscriber on Mon Aug 8 04:23 CST 2005 >

B20E Head height [140-160]
posted by Phil S. on Mon Aug 8 04:46 CST 2005 > V
- B20E Head height [140-160]
  posted by CyaLater on Mon Aug 8 05:33 CST 2005 > V
  - B20E Head height [140-160]
    posted by Gary L subscriber on Mon Aug 8 05:54 CST 2005 > V
- B20E Head height [140-160]
  posted by Gary L subscriber on Mon Aug 8 05:39 CST 2005 > V
  - B20E Head height [140-160]
    posted by CyaLater on Mon Aug 8 06:17 CST 2005 > V
    - B20E Head height [140-160]
      posted by Gary L subscriber on Mon Aug 8 11:52 CST 2005 > V
      - B20E Head height [140-160]
        posted by CyaLater on Mon Aug 8 22:25 CST 2005 > V
        
        B20E Head height [140-160]
        posted by Gary L subscriber on Tue Aug 9 00:20 CST 2005 > V
        
        B20E Head height [140-160]
        posted by CyaLater on Tue Aug 9 03:25 CST 2005 > V
  - B20E Head height [140-160]
    posted by Phil S. on Mon Aug 8 08:23 CST 2005 > V
    - B20E Head height [140-160]
      posted by Gary L subscriber on Mon Aug 8 11:48 CST 2005 > V
      - B20E Head height [140-160]
        posted by Phil S. on Mon Aug 8 12:18 CST 2005 > V
- Shot Peening theory (long - sorry!) [140-160]
  posted by walrus3 subscriber on Mon Aug 8 09:00 CST 2005 > V
  - Excellent! [140-160]
    posted by Phil S. on Mon Aug 8 10:57 CST 2005 > V
    - Still more..... [140-160]
      posted by walrus3 subscriber on Mon Aug 8 14:44 CST 2005 > V
  - Shot Peening theory (long - sorry!) [140-160]
    posted by Gary L subscriber on Mon Aug 8 14:10 CST 2005 > V
    - Shot Peening theory (long - sorry!) [140-160]
      posted by walrus3 subscriber on Mon Aug 8 14:21 CST 2005 > V

B20E Head height [140-160]
posted by blackjackmc on Mon Aug 8 13:03 CST 2005 > V

Actually... [140-160]
posted by CyaLater on Mon Aug 8 22:59 CST 2005 > V
- Actually... [140-160]
  posted by Gary L subscriber on Mon Aug 8 23:57 CST 2005 > V
  - Actually... [140-160]
    posted by CyaLater on Tue Aug 9 03:13 CST 2005 > V

And the CR is..... [140-160]
posted by Gary L subscriber on Tue Aug 9 13:29 CST 2005 > V
- And the CR is..... [140-160]
  posted by Phil S. on Tue Aug 9 13:50 CST 2005 > V
  - And the CR is..... [140-160]
    posted by Gary L subscriber on Tue Aug 9 14:57 CST 2005 > V
    - And the CR is..... [140-160]
      posted by CyaLater on Tue Aug 9 17:57 CST 2005 > V
    - And the CR is..... [140-160]
      posted by Phil S. on Wed Aug 10 06:43 CST 2005 > V
      - And the CR is..... [140-160]
        posted by Gary L subscriber on Wed Aug 10 13:18 CST 2005 > V
      - And the CR is..... [140-160]
        posted by jparker3 on Thu Aug 11 09:33 CST 2005 > V

B20E Head height [140-160]
posted by jparker3 on Thu Aug 11 09:48 CST 2005 > V
- Too True. [140-160]
  posted by CyaLater on Thu Aug 11 20:13 CST 2005 > V
  - Too True. [140-160]
    posted by jparker3 on Fri Aug 12 02:27 CST 2005 > V
  - My apologies to all [140-160]
    posted by Gary L subscriber on Fri Aug 12 02:30 CST 2005 > V
    - My apologies to all [140-160]
      posted by CyaLater on Mon Aug 15 01:26 CST 2005 > V
      - It's running, but.... [140-160]
        posted by Gary L subscriber on Mon Aug 15 03:32 CST 2005 > V

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B20E Head height 140-160