1973 MFI vs 1973.5 CIS

[76_rookie]

Y'all got too complicated. Just answer which is more fun to drive?

[RSTarga]

Once the MFI is properly set up it is very reliable and the throttle response is addictive. As Boba said they do not tolerate fiddling by the untrained mechanic.
From what I hear it;s harder to get CIS parts than MFI parts these days.

[porwolf]

I had a '72T with MFI before I got my present '79SC. The '79SC has more power and much smoother torque over the full RPM range. And I find it much more fun to drive because I can totally depend on the engine under all conditions. I always had trouble getting the '72 MFI to work evenly in all RPM ranges. I was constantly adjusting it and never got it right. So, for whatever it is worth, I was not impressed with my '72 MFI performance.

[E Sully]

I find my CIS to be a very reliable set up compared to what I've read about MFI, and it needs very little maintenance. Cost wise, MFI is quite a bit more expensive than CIS. Parts for my CIS are much cheaper than what I've seen for MFI. I have bought a few complete intake systems for much less than what is being asked for just for just an MFI pump that needs a rebuild. The fuel tank design is superior and prevents fuel starvation during cornering. I love my '73 CIS and would never trade it for an MFI car.

[cmcfaul]

How cool is that (MFI) compared to CIS. The MFI is the most reliable part of the car.

Chris

73 911 E

[copbait73]

.............. it looks cool.........geez. How about a more technical report when you actually get it running?

[Matt Monson]

Quote de Matt Monson

Your question is like asking which is better, a penis or a vagina? They each have good things and bad things about them.



But point if fact there was never a 73.5 911S with CIS. The 73.5 was T only. Given the premium on E's and S's these days your question only makes sense if both cars are T's.

I think M491Cabriolet meant 911s, plural. not 911S.

Yeah, I followed his meaning. I was attempting to refine the discussion. I should have ended my post by saying that I would take a '73 E over a 73.5T but I would take a 73.5T over a '73T to make my intent clear.

I would personally rather drive an MFI car, but if we are talking long term values, I think the 73.5T will trump all other LWB T models except for maybe the '72. The '72 might end up being more valueable.

[gearya]

Originally Posted by 76_rookie

Y'all got too complicated. Just answer which is more fun to drive?

MFI, by a landslide

[M491Cabriolet]

I agree the 1972 is an interesting T (that's the year of my car). I stupidly sold my 1972 911E a long time ago and this was the closest thing I could find and afford.

Anyway, because the 1973.5 has never been considered the most fun, thanks to the really tame injection , cams, etc., I'm not convinced that it will ever really be considered the best and most valuable T -- just because it was the last one. A possible analogy is the 1973.5 is like a quarterback retiring past his prime.

I had a 1973.5 and liked it, no doubt, but it's character was very different. The interesting thing is that this tame character is what I am after now as a lazy driver to the office grind. I'm waiting for another one to show up on my radar...

[Bammer]

Originally Posted by M491Cabriolet

. . . All things being equal on original 1973 911s . . . which car would be more desirable, a 1973 2.4 with MFI, or a 1973.5 2.4 with CIS? . . .

Along w/ its 'looks,' and all-'round straight-forward mechanicalness . . . there is no more signal feature of the Early 911 than the MFI --- regardless of tune

CIS = driveability, economy, smoothness . . . . . . bah!

Next to the dog-leg 901 'box --- already missing, by then . . . nothing oozes the true character of these cars like the coo-coo clock fuel pump, with the steel lines snaking hither-&-yon, and that boom/rasp/wail of Porsche's flat-six on charge . . . ears back + claws out

Want civility?

Buy a Camry . . .

. . . or a bus pass . . . .



. . . or a nice sweet CIS 'T'





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