850 T5 Blue Smoke after a couple hours of sitting

[fantajuice]

Do all of them have cracks inside the manifold, turbo side?
I've seen 8 and all of them do.

[fantajuice]

The heater fan decided to give up. Will it only fit from a 850 or will the first gen v70 work too?

[RickHaleParker]

The heater fan decided to give up. Will it only fit from a 850 or will the first gen v70 work too?

Did you check to make sure it is the blower and not the resistor pack. Pull the wire off the blower and connect +12V to the blower.

1993 - 1997 850 only. Volvo part numbers 6820812 and 6849562. In the US Volvo OEM is ~$270.00 .

You can save a bundle if you can locate the motor only then use it to rebuild the blower. You will end up a blower that has OEM performance. The motor is Bosch 0130111134. In the US we can get the Bosch 0130111134 for ~$60.00. A difference of $210.00.

[fantajuice]

I think I found a second hand one from a scrapper.
The old one melted fuses before it died.

I got rid of all the turbo leaks and the car happily burns rubber in third gear. However - how long does the 15G turbo last at 1.5 bar boost and a ECU tune? Starting to get worried I might kill the thing.

[Sommerfeldt]

I got rid of all the turbo leaks and the car happily burns rubber in third gear. However - how long does the 15G turbo last at 1.5 bar boost and a ECU tune? Starting to get worried I might kill the thing.

22 psi? Who told you that was a good idea on a 15G?
As to how long... not very. You're probably making mostly heat running a 15G at that level, so if you're really after performance, a turbo upgrade along with new IC should be up top of the list.

- S

[abscate]

I think I found a second hand one from a scrapper.
The old one melted fuses before it died.

I got rid of all the turbo leaks and the car happily burns rubber in third gear. However - how long does the 15G turbo last at 1.5 bar boost and a ECU tune? Starting to get worried I might kill the thing.

The turbo will last forever

The connecting rods, your first full throttle 22psi pull.

[Sommerfeldt]

The turbo will last forever

The connecting rods, your first full throttle 22psi pull.

Will it, though?

22 psi is quite nuts on a stock setup in any case. Boost will kill the connecting rods, or the 15G will make nothing but heat and cook the whole thing... It's up there on 19T levels, after all.

- S

[fantajuice]

I got rid of all the turbo leaks and the car happily burns rubber in third gear. However - how long does the 15G turbo last at 1.5 bar boost and a ECU tune? Starting to get worried I might kill the thing.

22 psi? Who told you that was a good idea on a 15G?
As to how long... not very. You're probably making mostly heat running a 15G at that level, so if you're really after performance, a turbo upgrade along with new IC should be up top of the list.

- S

Thing is, I didn't tune it there, it was like that when I bought the car and I have no idea what has been done to the car. Boost takes ages to build anyway. And it did make 1.5 bar unless the gauge is way off.

[Sommerfeldt]

Thing is, I didn't tune it there, it was like that when I bought the car and I have no idea what has been done to the car. Boost takes ages to build anyway. And it did make 1.5 bar unless the gauge is way off.

Sorry about the slow reply.

Your car shouldn't see anything above ~0.8 bar stock, so someone did something, or your gauge is off. I wouldn't call 1.5 bar a safe level either, and on a 15G, boost is normally quite quick - even on a 16T, you shouldn't really have significant lag...

It seems to me that there might be some things going on with either the turbo or the control mechanisms - your wastegate or actuator could be stuck or jammed in some way, to make it slow to boost and then not stopping at the correct level. I'd expect other problems if you're boosting that much over stock without other changes, so someone may have done it on purpose...

Check your codes, check the gauge, check your boost management and then ponder flashing your ECU with a stock map, just to reset things since you don't know what's been done before. That last one is involved, though, so unless you're having other engine issues, it might be a bit over the top if you're not planning on tuning it yourself or upgrading things.

- S

[Sveedy]

So now I'm curious - When Sveedy was completely stock I noticed that the stock dash turbo gauge didn't rise above about 3/4 of the way into the white under wot. Now with mods I've made I see the gauge go all the way to the far right, basically burying the needle. Any idea what the stock gauge is calibrated to ? I'm I developing too much boost when it goes that far into the white zone ?