944 Turbo ?

[watracing]

To all that are 944 Turbo experts. I purchased a 1986 944 turbo cheap, the guy said that it had a new motor in it. Come to find out he had installed and 1989 Turbo S motor. I do know that the DME was different for that motor. Should he have changed the DME, or will the DME from the 1986 work?

Any help would be appreciated.

[Jad]

The 86 and the 89 Turbo S have the same motor I believe, the difference was in accessories like the turbo charger. There may be 1 or 2 sensors that changed, but you need more of an expert than me for that. Does the car run? If so, the DME works. If only the motor was changed, I would think the old DME would be correct and the 89 would cause problems.

[watracing]

Well, the car runs, but badly @ the moment. First issue is that I believe that the Turbo is blown. Puking oil into the exhaust like crazy. I also think that the vacuum lines are another issue. Just trying to clarify, or I should say, eliminate part of the issue being the DME.

Thanks.

[Jad]

If it runs, it probably isn't the DME. If the DME isn't happy, it shuts everything off and the car won't even start.

Good luck, sounds like you have a huge project ahead.

[Steve Grosekemper]

These cars can be hugely complex and expensive for problems like this.
Before jumping into this "adventure" I suggest penciling out what a new turbo installation will cost plus several days of engine management labor @ near $100/hr and see how committed to this car you are.
I have had several of these cars and love the way they drive, but I would hate to have to pay retail cost for the more involved repairs ...

About your question-
Remove all the intake plumbing off the turbo and run the engine by holding the AFM door open slightly. If oil is pouring out the compressor housing you need a turbo. If not, remove the oil supply and run the car to see if the smoking goes away. (Could be leaking to the exhaust side only-but unlikely) If not you may have an engine problem.

A few hundred dollars of professional advice may go along way to saving you a lot of money & heartache.

Good Luck

[watracing]

Not worried about labor, my husband is taking care of that. Just wanted to make sure that the DME couldn't also be part of the problem. Going to do a leak down test and compression check to determin if it's worth keeping or parting out of this car. It is kind of a shame to part out, because the body is straight. Oh well. Thanks for all the input.