Volvo RWD 120-130 Forum

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B20 piston and conrod weight 120-130

posted by Bennie on Sun Aug 21 04:58 CST 2005
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last visit: Wed Nov 28 03:03 CST 2007

[RELATED]

Since I had some minor... problems with my B20 (see this post) I have the block completely apart. I plan on replacing main and con rod bearings.

The pistons are first oversize (0,15) and the piston ring end gap is currently 0,55mm. I plan on just keeping these, but when do you guys replace the rings?

Also, since this engine never has been realy smooth I will have the crank shaft balanced. I also measured the weight of the piston and rods:

#1 piston 579 grams, con rod 817 grams.
#2 piston 581 grams, con rod 822 grams.
#3 piston 579 grams, con rod 814 grams.
#4 piston 581 grams, con rod 822 grams.

This adds up to a total (including the piston pin (all 151 grams) of:
#1 1547 grams.
#2 1554 grams.
#3 1544 grams.
#4 1554 grams.

I know the conrods are marked but is there any harm in redistributing the rods so I have a better weight distribution? Currently the heaviest piston are on the heaviest conrods. I thought I might just match the heavy pistons with light rods and vice versa. But is it more important to have #1 and #4 have the same weight (and #2 and #3) or should #1 and #3 (and #2 and #4) match? (like it current)

cheers, ben

--
P131, '65, B20B+M47+DGV. P131, '69, B20E+AW71L+LSD. (www.tinustechniek.tk)

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B20 piston and conrod weight [120-130]
posted by Bennie on Sun Aug 21 04:58 CST 2005 >

B20 piston and conrod weight [120-130]
posted by Phil S. on Sun Aug 21 07:12 CST 2005 > V

B20 piston and conrod weight [120-130]
posted by walrus3 subscriber on Sun Aug 21 08:17 CST 2005 > V

B20 piston and conrod weight [120-130]
posted by CyaLater on Mon Aug 22 04:53 CST 2005 > V

B20 piston and conrod weight [120-130]
posted by JohnMc on Mon Aug 22 05:08 CST 2005 > V
- B20 piston and conrod weight [120-130]
  posted by Bennie on Mon Aug 22 08:32 CST 2005 > V
  - B20 piston and conrod weight [120-130]
    posted by JohnMc on Mon Aug 22 09:13 CST 2005 > V
    - B20 piston and conrod weight [120-130]
      posted by Bennie on Tue Aug 23 07:15 CST 2005 > V
      - B20 piston and conrod weight [120-130]
        posted by JohnMc on Tue Aug 23 09:36 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by Phil S. on Tue Aug 23 09:43 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by Bennie on Tue Aug 23 20:50 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
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        B20 piston and conrod weight [120-130]
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        B20 piston and conrod weight [120-130]
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        B20 piston and conrod weight [120-130]
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        B20 piston and conrod weight [120-130]
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        B20 piston and conrod weight [120-130]
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        B20 piston and conrod weight [120-130]
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        B20 piston and conrod weight [120-130]
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        B20 piston and conrod weight [120-130]
        posted by CyaLater on Thu Aug 25 04:12 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
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        B20 piston and conrod weight [120-130]
        posted by CyaLater on Thu Aug 25 21:58 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by Bennie on Thu Aug 25 03:34 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
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        B20 piston and conrod weight [120-130]
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        B20 piston and conrod weight [120-130]
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        B20 piston and conrod weight [120-130]
        posted by Bennie on Thu Aug 25 01:41 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by CyaLater on Thu Aug 25 02:00 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by Bennie on Thu Aug 25 03:32 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by CyaLater on Thu Aug 25 03:50 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by JohnMc on Thu Aug 25 04:09 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by CyaLater on Thu Aug 25 04:23 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by someone claiming to be cdu on Thu Aug 25 14:06 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by CyaLater on Thu Aug 25 20:38 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by Phil S. on Thu Aug 25 05:32 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by CyaLater on Thu Aug 25 05:53 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by Phil S. on Thu Aug 25 06:56 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by CyaLater on Thu Aug 25 19:21 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by jparker3 on Thu Aug 25 20:36 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by CyaLater on Thu Aug 25 21:43 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by jparker3 on Sat Aug 27 06:01 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by Bennie on Sat Aug 27 07:39 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by CyaLater on Sat Aug 27 22:47 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by Bennie on Sun Aug 28 06:05 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by CyaLater on Sun Aug 28 17:10 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by CyaLater on Sat Aug 27 22:57 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by Bennie on Thu Aug 25 05:14 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by CyaLater on Thu Aug 25 05:47 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by Bennie on Thu Aug 25 07:45 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by JohnMc on Thu Aug 25 08:11 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by Bennie on Thu Aug 25 08:24 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by jparker3 on Thu Aug 25 19:32 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by CyaLater on Thu Aug 25 20:05 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by JohnMc on Thu Aug 25 02:27 CST 2005 > V
        
        B20 piston and conrod weight [120-130]
        posted by Bennie on Thu Aug 25 07:58 CST 2005 > V

B20 piston and conrod weight [120-130]
posted by mjamgb on Thu Aug 25 12:11 CST 2005 > V

I just wanted to say: Thank you, [120-130]
posted by KLR142 on Sat Aug 27 21:01 CST 2005 > V

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B20 piston and conrod weight 120-130