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B20 won't rev enough 140-160 1973

posted by JohnH on Sun Mar 30 09:45 CST 2003
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last visit: Mon Oct 6 00:29 CST 2014

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Hi,

I got my 142 back from the panel shop at the weekend - al looking very nice. I had a 2 1/4" exhaust put onat the same time.

The problem is that it won't really rev past about 4000rpm - 70mph? I got between 135 and 150 psi compression, and it does puff a little blue smoke on overruns. I fitted a new Pertronix and cleaned the disributor, timing advances to about 35 degrees, tappets all set at 21thou, plugs cleaned and gapped, distributor cap looks new (and I cleaned it anyway), and the plug leads looked good. No sparking or mistracking when I ran the motor in the dark.
Is this the dreaded worn cam syndrome, or has anyone any suggestions for anything else to look at?

Help me! I want to use the car for a TSD rally next weekend!

Regards

JohnH

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B20 won't rev enough [140-160][1973]
posted by JohnH on Sun Mar 30 09:45 CST 2003 >

B20 won't rev enough [140-160][1973]
posted by brettsutherland subscriber on Sun Mar 30 11:11 CST 2003 > V
- B20 won't rev enough [140-160][1973]
  posted by JohnH on Sun Mar 30 11:23 CST 2003 > V
  - B20 won't rev enough [140-160][1973]
    posted by brettsutherland subscriber on Sun Mar 30 11:33 CST 2003 > V
  - B20 won't rev enough [140-160][1973]
    posted by Phil S. on Sun Mar 30 12:02 CST 2003 > V
  - B20 won't rev enough [140-160][1973]
    posted by walrus3 subscriber on Sun Mar 30 13:47 CST 2003 > V
    - B20 won't rev enough [140-160][1973]
      posted by JohnH on Sun Mar 30 15:57 CST 2003 > V
      - B20 won't rev enough [140-160][1973]
        posted by JohnMc on Mon Mar 31 02:36 CST 2003 > V
      - B20 won't rev enough [140-160][1973]
        posted by brettsutherland subscriber on Mon Mar 31 06:13 CST 2003 > V
    - B20 won't rev enough [140-160][1973]
      posted by someone claiming to be Big slimmy on Sun Mar 30 17:22 CST 2003 > V
      - B20 won't rev enough [140-160][1973]
        posted by JohnH on Sun Mar 30 17:29 CST 2003 > V

B20 won't rev enough [140-160][1973]
posted by someone claiming to be cdu on Sun Mar 30 15:07 CST 2003 > V
- B20 won't rev enough [140-160][1973]
  posted by JohnH on Sun Mar 30 16:00 CST 2003 > V
  - B20 won't rev enough [140-160][1973]
    posted by someone claiming to be cdu on Sun Mar 30 17:16 CST 2003 > V
    - B20 won't rev enough [140-160][1973]
      posted by JohnH on Sun Mar 30 17:27 CST 2003 > V
      - B20 won't rev enough [140-160][1973]
        posted by someone claiming to be cdu on Sun Mar 30 17:44 CST 2003 > V

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Volvo RWD 140-160 Forum

B20 won't rev enough 140-160 1973