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98 s70 glt boosting S70

posted by  ML240 on  Thu Feb 10 23:14 CST 2011
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last visit: Thu Oct 1 14:35 CST 2009
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hey, im in the process of acquiring a 1998 s70 glt and have some upgrades planned for it. i have a 15 g turbo, the ipd reversed inter cooler pipes, forge atmospheric blow off valve from an srt4, ecu flash and some other things that are gonna go into it. anyways the question i have is this: how many psi of boost can this engine handle on a regular basis?

i have a friend with a 95 850 that runs 20 psi every day but i know the compression is different between the s70 and 850 and neither of us are sure what the max boost is for the s70 so i figured id ask around here.








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    98 s70 glt boosting S70

    posted by  tmannian on  Sun Apr 3 17:17 CST 2011
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    last visit: Sat Sep 20 10:31 CST 2014
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    If I were you I'd be looking for a t5 or R (s70 or 850), because the "smaller" engine will hold more boost. I wouldn't run the 2.4 above 12 if it were mine. Don't quote me, but IIRC the glt runs 13:1 compression ratio while the turbo is only 9.8:1. That's a pretty big difference.
    --
    If you're not driving it "like its stolen," are you really driving?








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    98 s70 glt boosting S70

    posted by  KlausC on  Fri Feb 11 10:39 CST 2011
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    last visit: Fri Oct 24 10:15 CST 2014
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    Let me see, your buddy has a 2.3L designed for high presssure boost and you have a 2.4L design for low pressure boost. If you turn up the boost to 15+, you risk breaking the wrist pins or the connecting rods on the 2.4L

    A better place to get technical info on the maximum amount of boost your engine can take is

    http://volvospeed.com/vs_forum/topic/86240-modifying-fwd-turbo-volvos-read-dont-comment/

    Just remember, the above article is for the 2.3L engine, not the 2.4L

    Klaus
    --
    Always willing to listen, just not able to take direction.







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