First off, I think volvo did a great job making the 850, its a great car. But for the life of me I can't understand why they would put a turbo in a car and then not have a boost gauge, that's just stupid.
I truly believe the reason I'm replacing the head gasket on my car is because the waste gate hose came off and over pressurized the head. Or maybe that simply can't happen because of a bypass or the computer shuts the car off or? At this point I think it can happen and I should install a boost gauge.
is it as bad as I think to run a turbo car with no gauge
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1ezliving4ume
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- Year and Model: 850 glt turbo 1997
- Location: indiana
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waffleshill
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- Year and Model: 2004 V70R, 2006 XC70
- Location: CT
Too much boost makes the car run lean and that will burn a piston or crack a cylinder. A brokem headgasket doesn't seem likely from that.
2004 V70R Mystic Silver Metallic/Nordkap M66 287,000 miles
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Sommerfeldt
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All my 850s w/turbos have had a boost gauge on the stock cluster as well. I've seen V70s w/o it, but never a turbo 850. That said, I've never had an LPT 850, so that might be it...
Anyway, overboosting wouldn't get you a blown head gasket - there would be a myriad other issues long before it, anyway. If anything, I'd wager you've been underboosting w/ the failed wastegate hose.
A gauge wouldn't necessarily help you, either. The stock ones aren't pillars of precision measurment. An aftermarket one would certainly let you keep an eye on things, but a boost controller might get you even more peace of mind. Though on an LPT, it seems a little bit silly. It's even a little silly on a stock HPT.
- S
Anyway, overboosting wouldn't get you a blown head gasket - there would be a myriad other issues long before it, anyway. If anything, I'd wager you've been underboosting w/ the failed wastegate hose.
A gauge wouldn't necessarily help you, either. The stock ones aren't pillars of precision measurment. An aftermarket one would certainly let you keep an eye on things, but a boost controller might get you even more peace of mind. Though on an LPT, it seems a little bit silly. It's even a little silly on a stock HPT.
- S
2018 S90 T8 Inscription - glossy black with amber interior and dark as night rear windows.
[Gone] '96 855 T5 - R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.
[Sold] '97 S70 T5
[Gone] '95 855 T5-R - one of the black ones... sadly stolen and wrecked.
[Gone] '96 855 T5 - R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.
[Sold] '97 S70 T5
[Gone] '95 855 T5-R - one of the black ones... sadly stolen and wrecked.
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1ezliving4ume
- Posts: 84
- Joined: 25 Jun 2015, 15:21
- Year and Model: 850 glt turbo 1997
- Location: indiana
That makes me feel a little better, I did have 5 burnt valves in the head. I guess I'm still scratching my head on why the head gasket let loose.
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