Volvo RWD 120-130 Forum

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IPD headers 120-130

posted by  someone claiming to be Blue 67 on  Tue Jan 19 02:41 CST 2010 [RELATED]

Does the IPD headers give any kind of gain over the 2 port exhaust manifold from the b20?








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    IPD headers 120-130

    posted by  benski on  Tue Jan 19 21:19 CST 2010
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    last visit: Wed Oct 22 12:07 CST 2014
    [RELATED]

    From what I understand, the stock manifold is just fine until you've got a VERY serious (read unstreetable) street motor. Something that idles at around 2500 badly, and spends its productive time north of 5500 RPM. So, unless you like the headers for the looks (which I do, I'm afraid) and the gentle wow factor while we all stand around our cars bench racing at meets, I guess just stay with the stock late model manifold.








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    IPD headers 120-130

    posted by  someone claiming to be charlie on  Tue Jan 19 06:15 CST 2010 [RELATED]

    The current IPD header isn't very good. The older ones with longer primary tubes were ok for a 200 HP race engine but too large for a street motor.








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    IPD headers 120-130

    posted by  greendread on  Tue Jan 19 04:36 CST 2010
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    last visit: Tue Sep 2 08:56 CST 2014
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    Hello,

    All I've been told by some gurus is the oe set up is best unless head is highly modified.

    I have a stahl header on my big bore b20 and it did make a difference for me on the low end but now the car can't hit 100 mph.when it got there easily before.
    It may be unrelated but that's where it stands today. I am now trying to find a trustworthy machine shop to go over the head and have my dual intake manifold and SU's refreshed before going forward.

    good luck,
    greendread








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      IPD headers 120-130

      posted by  someone claiming to be John Hamilton on  Sun Jan 24 06:59 CST 2010 [RELATED]

      I have Stahl headers on my PV race car and they work better than anything else I have tried. Happy to share the name of my head guy - I have paid for mucho development time on his flow bench that you can take advantage of. Think you might want to consider Webers eventually. 42's and even 45's can be made quite streetable. Jere Stahl, by the way, bought a P1800 and will be racing vintage with us this year.







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