bolt on turbos on stock manifold

dbgt202 · Post by **dbgt202** » 20 May 2005, 10:21

Would like to install a turbo on my 850 on low boost for a few extra HP. Ive purchased a turbo manifold already.. Does any one know if there are any turbos that would bolt on to a stock manifold and downpipe and will not require any lines to be tapped into? If not where would i have to tap the oil lines into for a stock volvo turbo?

White850Turbo · Post by **White850Turbo** » 20 May 2005, 10:54

Lemme get this straight. You have an N/A 850 and you want to turbo it or you have an 850 turbo and you want to put a bigger turbo on it?

dbgt202 · Post by **dbgt202** » 20 May 2005, 11:16

well, its a N/A 850 and would like to put a turbo on it. I was wondering if there is a turbo that fits the stock manifold that does not require any lines to tap into.

White850Turbo · Post by **White850Turbo** » 20 May 2005, 12:04

*Sighs* Who told you that any such thing would be possible?

Let me take a moment and explain why it won't work:

First off, the N/A engine is a COMPLETELY different animal from the turbo engine. The turbo engine has a lower compression ratio to prevent detonation when under boost. This, along with turbo lag, is the reason N/A's are faster off the line. When you introduce forced induction into an already high compression engine, you'll have detonation city (i.e. bent rods, burnt pistons). Also, the transmission mated to the turbo engine has a different final drive gear than the N/A tranny. It won't be able to hold the extra power. The turbo engine also has specially designed valves designed to cool the pistons with oil, the N/A engine doesn't. The turbo engine has sodium plated exhaust valves to handle the heat; the N/A engine doesn't. The turbo engine has a different intake manifold and throttle body. The turbo engine uses a different radiator. You would also have to have the intercooler, which costs about $500, plus all of the piping, which is gonna cost around $300. You would also need a boost control solenoid ($100), and an ECU from a turbo model ($1000 new, $300 used if you're lucky). You'd also have to tap the block for the oil return line, which if you screw up, you can kiss the engine goodbye. I can go on and on, but it would cost WAY more than it'd be worth to turbo that car. If you want more power, you'd be much better off selling that car and picking up a turbo model or picking up a used engine from a turbo model, but even that would probably run you a good $3500 or so all said and done.

dbgt202 · Post by **dbgt202** » 20 May 2005, 12:30

Wow!!! That shows how much i know...

maltatrucker · Post by **maltatrucker** » 29 Jun 2005, 12:01

Hi all
Sorry to differ but it can be done and i'm in the process of doing it at this moment but mine is a complete engine rebuild and when finished shoud be in the range off 400-550bhp(when I can find the bloody pistons and con rods).
You can fit a low pressure boost turbo off the 850LPT and find the intercooler and piping from a breaker then YOU WILL have to conected the water and oil pipes to the engine the you do not have to change the ECU just install a piggyback ECU unit or if your volvo is with the mototronic ignition system i.e 1 ecu take the car to a reprograming shop and they will set it up for you.

Jot · Post by **Jot** » 29 Jun 2005, 14:49

On the 850 the Turbo was on a 2.3 liter engine not the 2.4 that is standard. The newer S and V series do use the 2.4 engine

maltatrucker · Post by **maltatrucker** » 30 Jun 2005, 03:46

Here you go.
1997 850 GLT
Chassis: 850sedan 850wagon , Engine: B5254FT Turbo-Mitsu
Transmission / final drive ratio: M56 / 0.00:1 AW42 / 0.00:1
Notes: 190 HP.
Known as the 850LPT using the 13G turbo and a lower compresion ratio of 9.0 : 1

White850Turbo · Post by **White850Turbo** » 01 Jul 2005, 05:41

maltatrucker wrote:Hi all
Sorry to differ but it can be done and i'm in the process of doing it at this moment but mine is a complete engine rebuild and when finished shoud be in the range off 400-550bhp(when I can find the bloody pistons and con rods).
You can fit a low pressure boost turbo off the 850LPT and find the intercooler and piping from a breaker then YOU WILL have to conected the water and oil pipes to the engine the you do not have to change the ECU just install a piggyback ECU unit or if your volvo is with the mototronic ignition system i.e 1 ecu take the car to a reprograming shop and they will set it up for you.

It is possible to do, but not practical I would say for most. For the cost that one would spend on all the parts, they'd be much better off selling their N/A car and buying an 850 turbo.