850GLT Topic is solved

Bartman · Post by **Bartman** » 13 Jun 2003, 22:09

I recently purchased a 1987 GLT Sedan. This may sound stupid, but is it a turbo? If so , where is the turbo located? Also, can you purchase Headlight wipers anywhere but a Volvo Dealer?

William · Post by **William** » 13 Jun 2003, 22:49

I have an 93 GLT and I don't see anything that even remotely resembles a turbocharger on the engine. I have had a couple of people tell me that it is a "light turbo" but it think its just trim package option designation.

Post by **matthew1** » 14 Jun 2003, 01:58

The 97 GLTs were light pressure turbo. 190 hp. Go figure.

Bartman · Post by **Bartman** » 14 Jun 2003, 06:53

I can probably look it up, but what's the definition of light pressure turbo?

By the way, This site is great and I love my new Volvo

Post by **matthew1** » 14 Jun 2003, 11:22

Thank you

for your kind words and congrats on owning a Volvo. LPTs have a smaller impeller, and thus spin up faster than regular turbos. That in turn reduces turbo lag and provides power without the adrenaline-rush boost feeling. It's a compromise basically, meant for around-town driving... what 90% of a car's life is spent doing.

Another characteristic is lower psi. Perhaps someone will chime in the exact numbers. Also, I believe in the US market anyway, that the follow-on modell -- 70 series -- kept this LPT in the lineup as the base model.

iLLuZi0n · Post by **iLLuZi0n** » 14 Jun 2003, 13:20

Bartman wrote:I recently purchased a 1987 GLT Sedan.

do you mean 1997?

Bartman · Post by **Bartman** » 15 Jun 2003, 07:08

Oops! Still living in the '80's. It is 1997

iLLuZi0n · Post by **iLLuZi0n** » 15 Jun 2003, 12:02

AutoX47 · Post by **AutoX47** » 17 Jun 2003, 22:32

Yes, the 1997 850 GLT model has a turbo, a light pressure turbo as stated. If you cannot find it that is because there is a heat shield on the side of the engine nearest the cockpit held on by a few bolts. The GLT models before 1997 do not have a turbocharger.

The difference between the LPT and HPT (high pressure turbo) models besides the turbo is the displacement and cylinder sleeves. The LPT model is 149 cubic inches as opposed to the HPT motor's 141. This is because the Turbo and R models have thicker cylinder sleeves which allow for better cooling. The lack of cooling for the LPT motors makes higher boost applications harder to achieve not only because of the factory turbo being smaller but because of high temperatures which will cause your ECU to ease back on power.

There are benefits to the LPT, as stated earlier, because it has a smaller turbo. The lighter parts spool up faster, so off the line acceleration is improved over the HPT models