Porsche 917 Turbo Engine detail photos

[Gramps46]

Link to detailed photos of a Porsche Turbo 917 engine.

https://www.msn.com/en-us/autos/enthusiasts/gallery-check-out-this-porsche-917-30-flat-12-rebuilt-to-glory/ss-BB14foKJ?ocid=spartan-ntp-feeds#image=11

Edited May 20, 2020 by Gramps46

[Force]

Nice photos...but it's a normally aspirated flat-12, no turbos.

Edited May 31, 2020 by Force

[Matt Bacon]

If it’s a 917/30 engine as billed, then it’s turbocharged...

best,

M.

[vintagerpm]

4 hours ago, Force said:

Nice photos...but it's a naturally aspirated flat-12, no turbos.

You can tell its a turbo by the tubes running down both sides o fthe top of the motor. However, there are no turbos attached to the engine.

[Force]

Well I did not see any turbos so that's why I reacted...a turbo engine should have a least one turbo don't they. 

[DonW]

 

6 hours ago, Force said:

Well I did not see any turbos so that's why I reacted...a turbo engine should have a least one turbo don't they. 

It is not turbocharged. If it was, as Håkan says, it would have one or more turbochargers attached to it. It just doesn't.

[Matt Bacon]

If it’s a 917/30 engine, it was built to be turbocharged. 

https://www.historicracingnews.com/Article/The-Record-Breaking-Porsche-917-30/2054

Whether or not the turbos are on it now, is neither here nor there: it doesn’t have a chassis or wheels on it now either. Given the issues they had getting the Can Am turbo engine to work reliably with intercoolers and the airflow from a car travelling 200mph, I’m not surprised that when turning over a static mechanical work of art they’re not doing it at maximum boost. 
 

best,

M.

[Force]

Built as a turbo charged engine mostly means lower compression ratio and some other stuff...all internal and not visible from the outside, the tell tale could be the plenums on top and the placement of the injection pump if the turbos isn't there.
It doesn't matter much...the 917 flat-12 engine is a gem in any case and the photos are great. 

With the turbos the engine looks something like this.

Edited May 31, 2020 by Force

[Matt Bacon]

Look at all those wires and fuel pipes! Not sure whether to be pleased or terrified that I have the Heller 917K, which comes with a full engine...

best,

M.

[vintagerpm]

For reference, this is what a normally aspirated 917 engine looks like.

[Force]

Porsche even did a normally aspirated 7.2 litre flat-16 intended for Can-Am but it was never raced.

Here is a picture of the car with the flat-16.

 

Edited May 31, 2020 by Force