Coolant leak.

A few months ago I noticed a bit of coolant pooling under the intake manifold. I was also able to smell it... that sweet nauseating smell.

It looks to be coming from between the block and the head..... No fluids don't seem to be mixing, no white smoke out the exhaust, and the compression numbers were really good.

After putting the clutch back together I was able to run the engine, and found that it was indeed the head gasket. An external leak, probably due to a deteriorating 27 year old gasket.

I made a video pinpointing the leak. Porsche 944 coolant leak from head.

Headgasket change.... it's a shame that I have to take the engine apart again.

The pintle caps one two injectors decided to stay behind.....

...but they clicked back in place with no problems.

Top dead center can be confirmed through a small viewing window in the bell housing. Luckily when the flywheel was off, I put a bit of red paint on the mark.

The engine code can also be seen to the left, stamped into the block.

Cam gear is also showing TDC, so we are definitely timed in.

After removing the cam tower, intake and exhaust manifolds, etc..... The two bolts from the fwd head to block coolant passage, gave me some problems. They are M8 bolts with a 6mm allen head.
One had its head sheared off, and the other got stripped.
 The one with the stripped head was easily removed after pounding a 12mm 12point socket on it. (these M8 bolts have a cylindrical head that is 13mm wide)

The other with the missing head I double nutted after taking the cylinder head off, and after much frustration, it finally came out...... along with all the threads in the block.

Yet another issue.... Chose to go with a timesert instead of a helicoil. It's a threaded bushing instead of a coil, and it won't back out since after it's interested it gets stretched open, and locks itself in place.

 Obviously new bolts were in order, so I will try these titanium ones.

Significantly lighter as you can see from the scales. Who cares about 10 grams, they are the same same strength as the steel ones, but will not corrode.

Whit this occasion coolant pipes and elbows that were neglected before, got a bit of paint.