I have a Volvo 740 Turbo '87. It has close to 210.000 miles on it and the engine still runs great. Only the turbo got damaged now. Since the Turbo was made by Mitsubishi I was wondering in which other car models this Turbo was used (Mitsubishi, Mazda, Honda)? That would make my search on the junkyard much easier. I've also found some turbos on the internet but these have after the "TD05" some other numbers like G16 - now i guess that this number stands for the diameter of the compressor? Would these ones also fit on my car and would i get an increas of power with a bigger compressor diameter?!?
If anyone could answer my questions - that would be great!
ALOHA - Volvo rules!!

Try www.turbocity.com. They can rebuild your mitsu for under $300 and the turn around is usually 48 hours. They rebuilt two of mine, one for an '87 765 and an '88 765. This is better then looking for one at the yard, unless you're just looking for a temporary fix.

If you go bigger, you are increasing the turbine and turbine housing as well as increasing the compressor and compressor housing.

Bigger = increased power? No way. Bigger on a turbo will hurt you more than it will help you.

My OPINION is to stay with what the factory engineers came up with. If you go bigger, you will need more exhaust gasses to spin up a bigger turbo in the same amount of time as yours is spinning up now.

What does this mean to you. Since your engine can't just up and spit out more exhaust gas then it already does, if you go with a bigger turbo, you will experience more TURBO LAG, or the time it takes for boost to "roll on".

This can end up hurting your performance rather than helping it.

There are plenty of modifications that can be done to increase boost with a stock turbo that will put a smile on your face. I recommend you take a look at http://www.turbobricks.org/ if you haven't already, and read old (archive) and new (main board) posts. You can learn an aweful lot about "hot rodding" your brick.

Good luck

You are so correct! I saw this years ago as a Diesel mechanic, the truckers would install a turbo for a 420HP on their 290HP and there just wasn't enough fuel to spin the turbo and they ended up with no power and black smoke, not to mention a bill for another turbo! Sometimes engineers know what they're doing!

FYI, "Turbo+" is usually thought of as the upgrade kit to 760 Turbos. It's a wastegate line bleeder kit that was an original volvo part, dealer installed, upon the initial purchase of the vehicle. I know you're post had little to do with this, but the title did. I have only seen those kits installed on Garret turbos, and would also recommend the garret over the mitsu. I can't be sure that you can just drop one in, or perhaps even use one at all--the port on the manifold might be different, and some of the vacuum layout is different as well...just if you find out that you can use a Garret, I like them better than the mitsu...

I wouldn't recommend trying to install a plus kit, but if you are looking to buy a volvo ever, and see one that has a plus kit (check the airbox) it does seem to make a little difference.

With all the trouble it is to install a turbo, why would you ever take one from the salvage yard? If you do the work yourself, you can buy new ones for a rather good price. It's the labor that runs up the cost of a turbo repair. Broken studs, etc. A new one is good for at least 100,000 if the oil is kept clean.