Engine Install / Transmission question
 

I am re-installing a 3.0 engine into a 911SC w/ 915 transmission. The transmission is still in the car. Using our hosts jack plate, lining up the engine to the transmission was easy, and from the top of the engine as I pushed the engine in I was able to watch that the throwout fork hooked up to the plate ( though I have not verify by looking through the starter hole, so I guess it could have come off ). Before I go start hooking everything back up and put oil in, I want to make sure that the transmission hooked up correctly to the engine so I did the following with the car still on jack stands.

- With transmission in neutral, I spun a rear wheel, and the other wheel did not move.

- With the transmission in gear, I spun a rear wheel, and the other wheel spun in the opposite direction.

- With the transmission in gear, but the clutch pedal depressed, I spun a rear wheel and the other wheel did not move.

I am concerned on how easily the wheels turned with the transmission in gear. I would think that they would not want to move, as I leave it in gear when I park so it doesn't role away if the parking brake decides to fail.

This just does not seem right, is this to be expected?

Thanks.

How did the clutch action feel?

If it was smooth it probably is connected. If not, I would make a visual check before going forward.

I have only connected the combo while out of the car but I believe they won't even mate up correctly when not right.

Action feels the same as when I took it out.

While the engine was out I did not mess with the clutch, I was dealing with oil leaks and cracked vacuum hoses on the CIS, so I shouldn't have messed up anything in that area.

If the transmission / engine won't mate if the throwout is not right that is good to know. Thanks

The Answer from another forum where I asked the same question. I confirmed that when I try to move both wheels the same direction, I can't move them.

This is the expected operation of an open differential as far as I can tell. If you don't have a limited slip diff, then it shouldn't be too difficult to have the opposite wheel turn when the transmission is in gear. When the transmission is in neutral, you're probably just turning the input shaft instead of the opposite wheel. All of this assumes you have an open differential..

Did you try turning both rear wheels at the same time (in the same direction)? *That* should be difficult because now you're turning the engine crankshaft.

All is well:)

The engine/transmission WILL mate with the fork NOT correctly in the release bearing. :)

Visual inspection is the ultimate confirmation. SmileWavy

and this is another reason why you remove and install them both as a unit.