99 911 engine swap

[shamrock99]

I am swapping out the engine in my 99 911 C4, I have a used engine with 71k coming in the end of this week. My question is I know I should check the IMS bearing and the RMS, and probably do the clutch while it's apart, but is there anything else recommended while it out and apart I should be looking for or doing ? Also my car is a 6 speed and the engine is coming from a tiptronic, are all the vacuum lines and everything going to be the same ?

[tonythetarga]

Glad you found an engine for your car. You might want to have a look at the hose that goes to the slave cylinder. If it is moist or has any cracks it should be replaced. They are a bear to get while everything is in the car and while it's out you could just replace it. I think they are under 30 bucks. I don't know about the vacuum lines but the water pump and AOS should be replaced if you do not have records of when they were done.

[BYprodriver]

The Cam chain tensioner wear pads should be replaced with the updated material parts that wear much better & cost $40 since at 70K+ miles they look like this: this:

[EBS_Don]

Good call Bill! That is a chronic issue with the early motors and when they do fail it's really bad. In fact, all of the chain rails are likely looking pretty sad...

[shamrock99]

Thanks for your input guys, made the appt today to have the following done, the ims bearing, rms and the cam chain tensioners, i am going to do the water pump and the aos myself, doesn't look that hard to do....

[BYprodriver]

Originally Posted by shamrock99

Thanks for your input guys, made the appt today to have the following done, the ims bearing, rms and the cam chain tensioners, i am going to do the water pump and the aos myself, doesn't look that hard to do....

WP & AOS is fun to replace while the engine is out!

[shamrock99]

So the engine hasn't been delivered just yet, trucking delays of some sorts, But over the weekend someone brought up and interesting point maybe someone could clarify.
my car is a 99 C4 6 speed, the engine I am getting is from a 99 C2 with tiptronic, it's complete, does anybody know if the wiring harness on the engine the same ? or should I swap that out ? couple of people have said yeah it's the same, and a 1 person said no it's not... Better to be safe than sorry and change it out ?

[txhokie4life]

Not sure on wiring harness -- but your connection near the thermostat is different between
a tip and stick

m

[BYprodriver]

You are adapting the "new" engine to fit your car so drop your engine with harness & put it side by side with new engine & transfer your harness to "new" engine along with any other parts missing from "new" engine. There may be wires etc you don't need on the Tip harness.