[Rick Cabell]

Hello everyone.
Kiwiokie just invited me onto this thread because he spotted a 77 3.0 Carrera on another thread that I converted to MFI.
First Kiwiokie, that set up you just posted from the PMO set up is a completely differant ball game. I think the idea is to deal with Porsche parts to duplicate the 74 3.0 RS.
After reading the thread, Jeff Higgins has pretty much covered it. And yes, 69-73 MFI parts are becoming harder to find. There are out there, but the price is higher than the old days.
My only disagreement with Jeff is the possible use of CIS pistons. I wouldn't even try it.
My approach was to copy the MFI system from a 71-73 MFI car and build it into my engine. I started by installing J&E 9.5:1 pistons the 69-73 911S MFI cams. I used the 69-73 cams housings so in would be less hassle down the road. I 'd hate to be stuck looking for a custom seal if needed. I saw a set of mag housing throttle bodies and stacks from a 69-71 car here on Pelican. They were already bored for a abandoned 3.0 RS project. I sent them to Eurometrix to be rebuilt and double checked. The bore matched the port size of the 3.0 carrera. (same as early SC). I then sent a used 2.4 liter pump to Gus and told him to build me a 3.0 RS pump.($1600). I think I used a distributor from a 2.7 RS. To make it simple, I built a 2.7 RS engine onto a 3.0 aluminum case. (original engine to the car.) SSI heater boxes and stock muffler. The most important issue was drivability. I didn't want a high strung finiky running engine. The engine came out better that expected. No bugs to work out, and it ran stronger that anything I've ever driven in the same class. It had to have 250 HP. I forgot the heads. I build a jig to bolt the head to, and bored and threaded a MFI port into the head. I didn't weld up the cut out for the old CIS injector.
If you want Kiwiokie, you can paste a photo of the engine from the other thread. It's beyond my capability. As far as cold start, I used the 69-71 air cleaner with the squirter tubes built into the top of it. Except for the J&E pistons,every part is from a 69-73 MFI car.