Gramps46 Posted May 20, 2020 Share Posted May 20, 2020 (edited) 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 Quote Link to comment Share on other sites More sharing options...
Force Posted May 30, 2020 Share Posted May 30, 2020 (edited) Nice photos...but it's a normally aspirated flat-12, no turbos. Edited May 31, 2020 by Force Quote Link to comment Share on other sites More sharing options...
Matt Bacon Posted May 30, 2020 Share Posted May 30, 2020 If it’s a 917/30 engine as billed, then it’s turbocharged... best, M. Quote Link to comment Share on other sites More sharing options...
vintagerpm Posted May 30, 2020 Share Posted May 30, 2020 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. Quote Link to comment Share on other sites More sharing options...
Force Posted May 30, 2020 Share Posted May 30, 2020 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. Quote Link to comment Share on other sites More sharing options...
DonW Posted May 30, 2020 Share Posted May 30, 2020 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. Quote Link to comment Share on other sites More sharing options...
Matt Bacon Posted May 30, 2020 Share Posted May 30, 2020 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. Quote Link to comment Share on other sites More sharing options...
Force Posted May 31, 2020 Share Posted May 31, 2020 (edited) 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 Quote Link to comment Share on other sites More sharing options...
Matt Bacon Posted May 31, 2020 Share Posted May 31, 2020 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. Quote Link to comment Share on other sites More sharing options...
vintagerpm Posted May 31, 2020 Share Posted May 31, 2020 For reference, this is what a normally aspirated 917 engine looks like. Quote Link to comment Share on other sites More sharing options...
Force Posted May 31, 2020 Share Posted May 31, 2020 (edited) 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 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.