Hello all,
Ever since I inherited a former track car from my father, I've been a huge fan of this forum. My dad converted his 2.7 liter '77 911S to a 3.2 liter engine from an '89. The car is fast, fun and surprising reliable so far, given the conversion. Unfortunately, he has few memories of the conversion process, so any problems I encounter send me scurrying to this treasure-trove of information. I would be seriously screwed without you all.
I've searched at length for a solution to my specific issue without much success, so here it is: the fuel pump buzzing was getting progressively louder, especially on hot days, so to avoid the stranded-by-the-side-of-the-road issue I decided to replace it. But with which model? The 1977 version (911-608-102-00-M14) or the 1989 model (944-608-102-04-M14)? Several Pelicanites stated that it doesn't really matter, the 3.2 will chug along happily with the higher pressure of the older pump, allowing the pressure regulator to keep things in check. Others recommend going with the younger, lower pressure model. I chose the latter because it seems like the pump should match the engine and it's management system. Besides, it was cheaper. But therein lies the crux of my problem. The newer pump has a check valve, the diameter of which is larger than both the banjo fitting on the existing fuel line, and the end cap (see photos).
I've tried swapping the ends between the two to no avail, they're different sizes on the pump side as well. I don't have a lot of money, so buying a new fuel line ($88) from our hosts is a last resort, and besides, I don't even know if the other, non-pump end of the line will need to be converted to a different size as well! Can I buy a different banjo fitting (sure hope I'm using the right term here) and attach it to the fuel line, then buy the right end cap from our hosts?
This car is new to me and, if I'm honest, I have no business owning it from a financial standpoint. But I absolutely
love it, and I want to keep it on the road. That means doing the work myself and relying on you wonderful people for advice. It is very much appreciated.
