Date: Sat, 27 Aug 2005 11:14:02 -0400 From: "dave" <alofusblountmaybenospamel.net> Subject: Re: Massive Loss of Oil... Did I kill her? (loooong)
"Chris Campbell" <chrisfcnospaml.com> wrote in message news:430ea1b4$1nospam.sacoriver.net... > In response to the flood of messages from my post (I was SO excited to see > them today!) > > Pidgeonpost wrote: > > > ....one more suggestion for when you've fixed her up... > > > > ...don't let your friend near her again...! :o) > > > GOOD idea. The same friend that killed my car is looking at a NG900 after > he was so impressed with driving (and ruining) my Saab! > > > >The timing chain tensioner has a ratchet mechanism to prevent it from > >retracting once it has extended, so even if the oil pressure was low the > >chain should have remained close to the correct tension and should not > >have been slapping. > > > >I'm stretching a bit here.. but ISTR the balance shafts' chain tensioner > >might be oil pressure only. Not positive, but it is a much smaller chain > >with less stress on it. > > Ummmm... no clue > > > >But what on earth is this talk about fiberglass and putty? The crack > >should have been in the sump, which you should be able to get and > >replace. If you can't find or afford a new one the junk yards are > full >of old SAABs and almost all of them have the same oil sump pan. Get > a >new gasket and a replacement pan and you may be good as gold. > > No $$$... A new pan is like $300-400... used one is probably cheap. > but AFAIK, you need to cut up your exhaust to get it out, and that'd be > going beyond my mechanical skills (putting one back together, that it... > welding and such). And the epoxy came reccomended by a Saab mechanic who > had done it to his own car and drove it 5+ years without any problems... > So far, so good... no leaks. And I do plan on replacing the pan... I just > needed a cheap, quick fix. > > > >Doubtful, although it can't be "good" for the car. The oil loss is most > >likely through the dipstick tube, when the sump became pressurised. > > >Check > >the one-way valve on the vac line that comes off the crank case. > >Short of that, get it fixed ... Should be about 3.50 UKP for a new > >dipstick tube and only a few pence for a new one-way valve from an > >aquarium suppliers. > > (cracked oil pan... thats where my leak was, nothing wrong with my > dipstick) > 3.50UKP?! thats simply outragous! (what's that like $10+USD?) > > Also I've noticed that I don't have an 'idiot' light on my dash indicating > anything about oil. Either the bulb has burnt out, or its displayed on the > EDU, which doesn't show anything due to a burntout backlight that I've > been meaning to fix. > > Tomorrow I drive the car for its first real endurance trial after the > incident. Wish me well, and I'll report back with the findings (turbo > whine, lifter noise and what have you). Also... the MBC is no more (for > now)... I almost threw it away, but I figured I'll save up for a new BPC > (and possibly a rebuilt turbo, from the sounds of it), and set it up in an > SMBC arangement (meaning you still have the BPC/APC controlling the boost, > but the MBC keeps the wastegate shut until it reaches a certian level... > or something, anyways its supposed to give you much faster spool-up while > retaining all knock protection and stock pressure control). > > -Chris > > 1994 Saab 9000CSE Turbo > 2001 Saab 9-3SE (parent's) > 1994 Saab 900SE V6 (*RIP*) > 1987 Saab 9000S (*RIP*) It's been my experience that when a turbo has been run low on oil the seals will glaze over causing a small leak thru the carbon seating surface. It is not always a given that the bearings are toasted, but it's a fair bet. The turbo in late model Saabs are water cooled at the bearing. If you have been fairly regular about oil changes with Mobil synthetic there is hope. Given the same position I would turn the MBC all the way down, like you already have. If you baby the turbo and keep the revs on the turbine down the seals may re-break in. With luck the only permanent damage is having wiped out about 20k of miles off the engine. It sounds like you never ran completely out of oil, instead just took the pressure way low. If you had actually gone dry, there would have been far more indications. Having said that I have never played Evel Kinevel with a turbo Saab and punched a hole in the oil pan. My experience with boogered turbo's is mostly with rather large diesel engines and my younger brother's C900 (RIP, waste gate stuck shut, swallowed valve at full throttle). dave
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