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Missing dump/bov valve? Or did it not have one originally?
Saab Saab Automobiles Discussions (alt.autos.saab)
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#1
 
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Missing dump/bov valve? Or did it not have one originally? -
07-31-2004
, 11:51 AM
#2
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My 1984 T16 doesn't appear to have any dump valve at all? Is this correct? I thought I'd read somewhere that all 16 valve turbos had them? My 1987 model did, but I've had all the pipes off and there is nothing at all where the dump valve should be. I presume it's easy enough to retro-fit one providing I get the rubber elbow and a length of vac hose? Or does the older car have some other mechanism that I'm not aware of already? cheers Mike |
#3
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My 1984 T16 doesn't appear to have any dump valve at all? Is this correct? I thought I'd read somewhere that all 16 valve turbos had them? My 1987 model did, but I've had all the pipes off and there is nothing at all where the dump valve should be. I presume it's easy enough to retro-fit one providing I get the rubber elbow and a length of vac hose? Or does the older car have some other mechanism that I'm not aware of already? cheers Mike Mine had had the hose that goes from the throttlebody to the dumpvalve |
sandwiched between the boost pipe (from air meter to turbo) and the
thermostat housing. that had been left in on mine.
--
Carl Robson
(The poster formerly known as Skodapilot)
http://www.bouncing-czechs.com
#4
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In article <2n1tfrFrul25U1 (AT) uni-berlin (DOT) de>, privacy (AT) privacy (DOT) net spouted forth into alt.autos.saab... My 1984 T16 doesn't appear to have any dump valve at all? Is this correct? I thought I'd read somewhere that all 16 valve turbos had them? My 1987 model did, but I've had all the pipes off and there is nothing at all where the dump valve should be. I presume it's easy enough to retro-fit one providing I get the rubber elbow and a length of vac hose? Or does the older car have some other mechanism that I'm not aware of already? cheers Mike Mine had had the hose that goes from the throttlebody to the dumpvalve cut and capped off with a very large torx bolt. the Valve itself is sandwiched between the boost pipe (from air meter to turbo) and the thermostat housing. that had been left in on mine. |
be, it just isn't there. I'm all nice and clean now so I'll have a root and
see if any pipes have been blocked/removed and if the outlet on the TB is
there..
Ta
Mike
#5
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"MeatballTurbo" <carl.robson (AT) bouncing-czechs (DOT) com> wrote in message news:MPG.1b75f73b7be8f921989fb0 (AT) news (DOT) individual.net... In article <2n1tfrFrul25U1 (AT) uni-berlin (DOT) de>, privacy (AT) privacy (DOT) net spouted forth into alt.autos.saab... My 1984 T16 doesn't appear to have any dump valve at all? Is this correct? I thought I'd read somewhere that all 16 valve turbos had them? My 1987 model did, but I've had all the pipes off and there is nothing at all where the dump valve should be. I presume it's easy enough to retro-fit one providing I get the rubber elbow and a length of vac hose? Or does the older car have some other mechanism that I'm not aware of already? cheers Mike Mine had had the hose that goes from the throttlebody to the dumpvalve cut and capped off with a very large torx bolt. the Valve itself is sandwiched between the boost pipe (from air meter to turbo) and the thermostat housing. that had been left in on mine. Thanks Carl. I replaced the DV on my the '87 car, so I know where it should be, it just isn't there. I'm all nice and clean now so I'll have a root and see if any pipes have been blocked/removed and if the outlet on the TB is there.. |
Had a quick look - there's defintely no valve, and no pipework or attachment
on the throttlebody either. Shame. Looks like
I'll have to get hold of a later one then and fit a standard bosch valve.
Mike
#6
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Had a quick look - there's defintely no valve, and no pipework or attachment on the throttlebody either. Shame. Looks like I'll have to get hold of a later one then and fit a standard bosch valve. |
about getting the DV mounted stright to that. Get an Atmo one, make sure
it is double spring.
normally only 8v turbos came without valves, and they were Pre APC ones.
--
Carl Robson
(The poster formerly known as Skodapilot)
http://www.bouncing-czechs.com
#7
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In article <2n2gbbFsfdomU1 (AT) uni-berlin (DOT) de>, privacy (AT) privacy (DOT) net spouted forth into alt.autos.saab... Had a quick look - there's defintely no valve, and no pipework or attachment on the throttlebody either. Shame. Looks like I'll have to get hold of a later one then and fit a standard bosch valve. If the pipe is on at the throttle body (or capped like mine was) see about getting the DV mounted stright to that. Get an Atmo one, make sure it is double spring. normally only 8v turbos came without valves, and they were Pre APC ones. |
Mike
#8
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"MeatballTurbo" <carl.robson (AT) bouncing-czechs (DOT) com> wrote in message news:MPG.1b774d0f3ff13016989fb9 (AT) news (DOT) individual.net... In article <2n2gbbFsfdomU1 (AT) uni-berlin (DOT) de>, privacy (AT) privacy (DOT) net spouted forth into alt.autos.saab... Had a quick look - there's defintely no valve, and no pipework or attachment on the throttlebody either. Shame. Looks like I'll have to get hold of a later one then and fit a standard bosch valve. If the pipe is on at the throttle body (or capped like mine was) see about getting the DV mounted stright to that. Get an Atmo one, make sure it is double spring. normally only 8v turbos came without valves, and they were Pre APC ones. My 88 8V T didn't have one, and that was APC.. :-) Mike Hmm, wonder if someone has fitted 8v parts to your 16v when they broke |
leaking?
--
Carl Robson
(The poster formerly known as Skodapilot)
http://www.bouncing-czechs.com
#9
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In article <2n52eiFsvrngU1 (AT) uni-berlin (DOT) de>, privacy (AT) privacy (DOT) net spouted forth into alt.autos.saab... "MeatballTurbo" <carl.robson (AT) bouncing-czechs (DOT) com> wrote in message news:MPG.1b774d0f3ff13016989fb9 (AT) news (DOT) individual.net... In article <2n2gbbFsfdomU1 (AT) uni-berlin (DOT) de>, privacy (AT) privacy (DOT) net spouted forth into alt.autos.saab... Had a quick look - there's defintely no valve, and no pipework or attachment on the throttlebody either. Shame. Looks like I'll have to get hold of a later one then and fit a standard bosch valve. If the pipe is on at the throttle body (or capped like mine was) see about getting the DV mounted stright to that. Get an Atmo one, make sure it is double spring. normally only 8v turbos came without valves, and they were Pre APC ones. My 88 8V T didn't have one, and that was APC.. :-) Mike Hmm, wonder if someone has fitted 8v parts to your 16v when they broke something and bodged it back together, or when the original DV started leaking? -- |
A-reg 1983 this looks to be the case - there's no tell tale signs such
as a plugged vac hose outlet on the TB, no plugged inlet etc. It would seem
a lot of trouble to go and fit 8v parts instead of a new DV - manifold and
all wouldn't it? I've got a later model spare TB kicking about, and a DV
somewhere, so I'm just going to stick that one once it's got MOT on it.
On another point - are the old style APCs just as tweakable as the later
ones?
Mike
#10
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I've read on Saabcentral that the early ones didn't have DVs, and being an A-reg 1983 this looks to be the case - there's no tell tale signs such |
16-valve didn't come out 'till '84.
Cheers!
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