Should I get new carbs on my /6 2.2l 911e motor? Options

[tornik550]

I recently purchased a 911e 2.2l engine. Befor I install it in my 914, should I change carbs? A previous owner at some point changed from MFI to zenith 40 tin carbs. From my understanding, this is probably not the best setup for a 911e 2.2? I have looked at the different options, which do you think is most appropriate taking cost, hp/torque gains, drivability...

1. Leave the zenith carbs
Pros- I already have them
Cons- probably better forming options

2. Change back to MFI
I probably can't do this one. I have no where to obtain the setup and I really am more comfortable with carbs

3. Change to weber 40 Ida's
Pros- ? Power?
Cons- expensive. Most likely between $2000-$2500 after rebuild

4. PMO carbs
Pros- improved overall performance compared with the zeniths. Easy setup. Is it worth the cost?
Cons- very expensive-$3600.

Here are some other things that I am doing to the engine other than basic maintenance. Pertronix for the distributor, new plug wires (clewett), msd 6al (I already had this), msds headers.

I do not plan on racing this car anymore, just spirited street driving.

[Tom_T]

IMHO if it were mine then I'd go back to the MFI cuz the 911E was set-up that way to provide the balance of the most versatility + best perfermance as a DD + sport driver! I always loved those early E's!

Most who changed the MFI & EFI on the 911/914 of that era did so cuz they didn't understand them & couldn't or wouldn't learn them, but they saved the royal PITA of carb balancing, twitchiness - esp. at idle, rejetting for altitude, etc. which multi-carbs demand in order to run well.

I also like cars of the era to represent that era & the technology then, unless you're dealing with a trashed or low resto value car that just doesn't waqrrant originality & the challenge of parts finding.

And the 911 MFIs are far better supported by Porsche & aftermarket than are the 914 EFIs! (IMG:style_emoticons/default/dry.gif)

BTW FWIW - Dave W./toolguy had a pain with PMO's he'd tried on his 70-6 IIRC, & have heard similar from other 911 owners in the SoCal area, they being not quite up to the quality of Webers.

[mepstein]

IMHO if it were mine then I'd go back to the MFI cuz the 911E was set-up that way to provide the balance of the most versatility + best perfermance as a DD + sport driver! I always loved those early E's!

Most who changed the MFI & EFI on the 911/914 of that era did so cuz they didn't understand them & couldn't or wouldn't learn them, but they saved the royal PITA of carb balancing, twitchiness - esp. at idle, rejetting for altitude, etc. which multi-carbs demand in order to run well.

I also like cars of the era to represent that era & the technology then, unless you're dealing with a trashed or low resto value car that just doesn't waqrrant originality & the challenge of parts finding.

And the 911 MFIs are far better supported by Porsche & aftermarket than are the 914 EFIs! (IMG:style_emoticons/default/dry.gif)

BTW FWIW - Dave W./toolguy had a pain with PMO's he'd tried on his 70-6 IIRC, & have heard similar from other 911 owners in the SoCal area, they being not quite up to the quality of Webers.

Tom - You have no idea what you are talking about