Episode 32 - 1986 Porsche 944 Turbo Restoration - Pistons & Crankshaft 

My favorite Saturday evening TV!

Hello Russ,,,I am guessing who the car is for!!

I know its the Weekend when the 944T/951 parts are flying!

It Looks like it is an M44/11 or an M44/12 2,7 Liter engine. But that one is an HC . An NA engine whitout a Turbo. The 2,7 Liter was built in 11/88 until 11/89 . It Is a 3 Liter block with an crankshaft from an 2,5 . M44/12 Is for an automatic gearbox . PS : Your Videos are great. Regards from Austria 🙋‍♂️

Those pistons looked like they were just bare aluminum. In an Alusil block such as this one (not Nikasil), the pistons must have a coating on the piston skirt to protect them from scuffing and galling. Stock 944 piston skirts are plated with iron.

Lindsey racing in Oklahoma City is who I’m going to have rebuild my 951 engine. All they know and do is 944’s for over 20 years now. They really know the 944 like no other. Anything from stock rebuilds and mods to make the engines better to full race 944’s.

Same lower end geometry as the 1989 factory 2.7l, - 104 mm bore x 78 mm stroke. Looks like this engine suffered from poor service maintenance, - remember the sludge in the bottom of the oil pan that you removed in an earlier video. Surprising amount of carbon build-up on the connecting rods. Fortunately, the engine uses stock crank and connecting rods, only the pistons and rings are custom. Good example of why you need to frequently change the oil on a turbo engine that is subjected to boost pressure and high operating temperatures.

YOU

My son had a 82 928 I almost kept it

104mm is the bore size of the 3.0L cars. Interesting.

What was wrong with the engine to take it down to this point? Out of zero?

Do the turbo 2.5L engines have a larger bore and shorter stroke than 2.5L N/A 944s? IIRC 951s came with lower compression

How many miles on that engine?