afx Posted September 28, 2019 Posted September 28, 2019 (edited) The frame was pressurized, note the gauge on the dash bar. If the pressure dropped this signaled to the driver/mechanic that a weld had failed. Edited September 28, 2019 by afx
Ace-Garageguy Posted September 28, 2019 Posted September 28, 2019 Man, this is great. Thanks again to everyone who's posted photos and reference material. Not only is there a lot of stuff here in one thread, but it's a helluva jumping off point for anyone who wants to follow up with more in-depth research. I just wish the book Matt linked to wasn't almost $750. That's a little steep at the moment, though it looks like an invaluable resource.
afx Posted September 29, 2019 Posted September 29, 2019 (edited) 21 hours ago, Gramps46 said: JC, I checked four 917 books and three use the designation LH and one just the letter L. I did not find any "official" Porsche documentation, yet. I had assumed the L was a contraction for Langheck. I will keep looking. I have seen the Simeone 917LH and the #35 Martini 917K when owned by Bobby Rahal and they are amazing. Porsche-Excellence Was Expected lists "917L" for the long-tails, "917LH" does not appear. Here is my take on it. The original 917 was sold with two tail sections; long-tail and short-tail. Original long-tail: Original short-tail: I believe the "917LH" designation was adopted for the later 1970/1971 long-tail versions to differentiate them from the original 1969 iteration. Edited September 29, 2019 by afx
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