Volvo RWD 140-160 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 11/2014 140-160 INDEX

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b20s 140-160

uid 37336's pic
posted by  B20Paul. on  Sat Sep 19 19:39 CST 2009
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last visit: Mon Oct 20 10:54 CST 2014
[RELATED]

Using stock valves, it's pretty easy to increase intake flow by 10% & exhaust by 25%. Going from +10% to +20% flow on the intake is where cost really increases because it takes time to get the most out of the head without hitting water. Core shift is a problem too.

I'd ask for actual flow figures that you are going to get, not percentage increases from what the stock head is because stock head flow varies wildly.




--
Three 164's, Two 144's, One 142 & a partridge in a pear tree.






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New b20s [140-160]
posted by  someone claiming to be confused  on Sat Sep 19 17:22 CST 2009 >
  • New b20s [140-160]
    posted by  B20Paul. subscriber  on Sat Sep 19 18:25 CST 2009 >
    • New b20s [140-160]
      posted by  someone claiming to be confused  on Sat Sep 19 19:05 CST 2009 >
      • New b20s [140-160]
        posted by  B20Paul. subscriber  on Sat Sep 19 19:39 CST 2009 >
      • New b20s [140-160]
        posted by  B20Paul. subscriber  on Tue Sep 29 22:27 CST 2009 >
  • New b20s [140-160]
    posted by  walrus3 subscriber  on Sun Sep 20 09:30 CST 2009 >


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