3.0vs3.2

[Por_sha911]

Originally Posted by Bob Kontak

Just look at your steering wheel. 1984 is the year Porsche stopped caring.

?

(I cheated)

[Shaun @ Tru6]

Originally Posted by Bob Kontak

Just look at your steering wheel. 1984 is the year Porsche stopped caring.

Bob, Porsche carried over the SC 3 spoke wheel into 84. 85 got the bus steering wheel.

[McLovin]

I’ve had both.
A brand new SC and a brand new 3.2 were comparable.
35-45 years later, the 3.2 is the better car to own, for one simple reason some have already mentioned:
Motronic.
CIS is ‘60s technology. And by 78 for the US was a bit of a Rube Goldberg-esqe system with a bunch of add on and compensators. Including the 78/79 air injection system, pump, octopus etc.
Motronic is the exact opposite. Elegant in its simplicity. Reliable and easy to diagnose and repair problems. Parts are all available and dirt cheap.
IMO it’s the peak injection system for DIY.
Digital, but with a minimum number of parts and can be diagnosed pretty much with a simple multimeter.

[island911]

nah, CIS is essentially a mechanical solution. EFI is more Rube Goldberg-esqe, but in a much smaller box using a crap-load of transistors.

The throttle response is much better in the 3.0 but the 3.2 pulls harder.

[dewolf]

Originally Posted by Tobra

There is no replacement for displacement.


Actually, that is not true. The replacement for displacement is more revs

Is a turbo

[Shaun @ Tru6]

On the subject of throttle response, I helped Ben McFarland, the original founder of M&K, develop the first muffler for a 3.2. 3 shipments of test fitting was all it took. The prototype was a long can vs. the short Ben went to for his whole line and I have used a short can as well. The long can had MFI/Weber like throttle response. It was instantaneous. It also had a true F1 shriek at high RPM. I sold the car with that muffler on it and years later after getting the short can (and disappointed it was different) contacted the owner and asked if I could borrow the muffler to be duplicated while his car was off the road for the winter. He would have none of it. Best I could do now is work with Brian and develop a new one. Would be worth it but on a different track had Ben develop this straight through "muffler" in exchange for rebuilding a steering rack. Connected to George's headers.

[astrochex]

^That sounds fantastic, Shaun! Seems puzzling that that particular long can cannot be developed again.

[Shaun @ Tru6]

Thanks, I do love it. One thing I have to change is the 2.5 outlet pipes to 3". Visually the 2.5 are too small.

Note the Paris Dakar ride height in the back from taking so much weight out of that end. Tail is back on the car now and finally lowering it with a whole new suspension and E50s with Turbo fans soon.

Ben didn't keep his original build specs. Now that I think of it, I wonder if the guy would just let me measure it. I also have to imagine it had no muffling inside since it was just a fitment prototype.

[Bob Kontak]

Originally Posted by Por_sha911

?

(I cheated)

That is a beautiful wheel.

I even like the "bus" wheel.

[Shaun @ Tru6]

I think the 85+ wheel is one of the most handsome modern wheels ever made and iconic Carrera. But it's huge. For driving, this wheel in the 73 is more my taste.

[GH85Carrera]

The factory wheel on my 85 is perfect for me. My hands had comfortable places to rest on 12 hour drives. I have done many dozen 10 to 12 hour road trips.

My wife's friends are always astonished to find we are going on a vacation in a 1985 car 186,000 miles on it.

[masraum]

I far prefer

(which was also the wheel used on the 959s)

to

If the "spokes" on ^that one^ had been half as wide as they are, it would have been a great wheel.

This is a great wheel too.


And the wheel that Joe posted is also very nice.

[masraum]

This was another great looking wheel that folks like to use to upgrade earlier cars.

[911 Rod]

Engine aside, don't the 3.0 and 3.2 weigh the same? Maybe the 3.2 had more options.

[Bob Kontak]

Originally Posted by island911

The throttle response is much better in the 3.0 but the 3.2 pulls harder.

3.2 has a longer crankshaft throw. It's marginally a stroker with the SC being a spinner.

I would like to feel the throttle response on an SC with webers or PMO's and a non CIS but slightly aggressive cam. I'll bet it would be a world of difference.

They are both exceptional automobiles.

[masraum]

Originally Posted by 911 Rod

Engine aside, don't the 3.0 and 3.2 weigh the same? Maybe the 3.2 had more options.

I think the theory is that between '78 and '89 weight mostly went up (slowly) and options were added.

[island911]

Originally Posted by Bob Kontak

3.2 has a longer crankshaft throw. It's marginally a stroker with the SC being a spinner.

I would like to feel the throttle response on an SC with webers or PMO's and a non CIS but slightly aggressive cam. I'll bet it would be a world of difference.

.

Yes, of course. MFI and carbs are especially snappy.

A component of the march towards cleaner and cleaner burning sacrifices the fast-fuel ...which dulls the throttle response.

[Bob Kontak]

Originally Posted by island911

Yes, of course. MFI and carbs are especially snappy.

My dentist pal has a complete MFI from a 72E in his basement. Chuck Stoddard installed webers on the E in 1973 or 74.

He knows the value of the kit, then guessing a couple thousand more to dial it in to a 3.0 and it becomes a whole lot of $$ for something cool to talk about.

[island911]

Yeah, a lot of people move away from MFI as it is a mechanical computer. (complex and difficult to understand)

Props to Jeff Higgins for remapping MFI to a 3.0 - carbs would have been so much easier.

[Baz]

One of each!