I can see another reason for people performing carb swaps, Part availability Options

[nditiz1]

I love carbs, they are simple in terms of parts.
I love CIS/djet/ljet/efi because hot/cold it starts and runs, doesn't need to be baby'd when first starting in cold weather.

Anyway - I'm just finishing up installing this nice 76 912e engine running pretty much the same ljet in the 914 and I hit a snag that makes it so I can't even get to hear it's first fire up. My car had its dual relay stripped. Yes, if it was still there I could fire it up, BUT it made me think, what if someone running ljet has one go out? So while I began my search for what I thought was a simple yet specific part I found tons of OOS. Wait, why?! It's a dual relay right? 2 relays glued together housed in the same unit (yes I realize more to it then that). So if these parts are unobtainable, then yeah it would make me want to remove it and go with something where parts are fruitful. So while most of the time the black arts of djet and ljet confuse some to swap to carbs, the unavailability of specific parts can also make that a thing.

Ok im done ranting.
(IMG:style_emoticons/default/beerchug.gif)

[wonkipop]

according to my quick search you can still get it?
the 912 E has the same dual (Double) relay.

at AA
http://www.autoatlanta.com/Porsche-Dual-Do...2361510100.html

not cheap.

but it wasn't cheap in 1989 either.
cost $87.85 USD back then = approx $216 US these days.
i looked up my reciept from the old days, because you got me worried. (IMG:style_emoticons/default/biggrin.gif)

they are not a direct replacement for the original metal relay.
the wiring in is slightly different.
i think @Van B has his head around that. there is a little mod that is done.
of course i never did mine back in 89, the wonderfull mechanic i went to in chicago back then took care of it.
what i can tell you is that already in 1989 these black plastic relays were the superceding part for the original metal case relays. my metal one was thrown out and the black plastic one installed.

its also a common part i think with the VW beetles that were fuel injected and maybe some buses but not 100% on that. i am just a dumb north antarctican and we didn't do this advanced fuel injection stuff back in the 1970s so not up on all the details of north american VW EFI installations across the model range.