3.0vs3.2
 

Any input on this

3.0 is revier, 3.2 is torquier. SmileWavy

Assuming you are looking at the difference in and SC and a Carrera.

The entire car, or just an engine? The major difference, besides the obvious displacement is the type of fuel injection. The Carrera's DME is a much more modern system that the CIS of the 3.0 engine. Neither is perfect, but the DME allows for software mapping to customize the setting to match any changes in the engine.

Are you comparing 2 stock engines or the whole car? If so what year?
Just to expand on what Glen said,
3.2L engine management is relatively modern with no adjusting required. Get in, start the car and go. CIS not so much.

If this is a comparison of the cars that they come in, more info is needed, because there were huge changes over the course of the 3.2L years ('84-89). I don't think there were many big changes in the '78-83 years.

To get good info, you're going to need to give us more to go on. You "question" is kind of like

Water or beer. Any input?

Ford or Chevy. Any input?

This sort of vague post triggers many of us to imagine...

https://tf-cmsv2-smithsonianmag-medi...lls-mobile.jpg

My SC had an engine built by Jerry Woods in it. Had euro pistons (higher compression), 964 cams and was a nice rev'er for sure. I forget what it dyno'd at but it was a fair bit more than 'stock'.
I haven't had a chance to sample the 3.2L my brother has in his '74 Targa. He's working on getting the seats in it today so he can use it to go to the 356 meet in Paso Robles in a couple of weeks.

Why do you ask?

There is no replacement for displacement.


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

192hp vs. 270hp here. 3.2 wins.

270hp after $20,000

My SC was more tossable than my Carrera so it was more fun to drive.

Nope, only paid $4500 for that car.

My 2340#(with 17 gal fuel) 3.2 Carrera was pretty tossable. Of course, it didn't look like an 85 Carrera when I finished it.

I have always preferred 3.2's over 3.0s. Motronic is modern and reliable and Steve Wong/Sal Carseller chipable, which, other than weight loss, is the cheapest way to gain significant hp. You can also get to a 3.4/5 with a 3.2 case.

My most fun car is my 73 with a 3.2 with headers and "muffler" weighing in at 2174 lb.

Nothing beats the fun value of that car, you can slide it around on sticky little 205/225x15s all day long.

I have both (mostly stock)
The 3.2 is definitely a stronger, faster car.....but the 3.0 SC is more fun to drive.
I have a smile on my face all the while driving the SC.

I believe the pistons and bores are the same size, but the 3.2 has a longer stroke. So less revy.

However... a 3.2 short stroke is the business. Got the displacement and the shorter stroke.

If a 3.2 is better than a 3.0, then the 3.6 is better once again, in the same way.

I think the 3.0 makes a better platform for hot rodding than the 3.2.

CIS is too complex and unreliable. 3.2 is a solid platform, durable, great engine management, can be serviced without the use of voodoo or specialty Porsche software.
The 3.2 has been considered the best of the air cooled classics by many for the above reasons.
http://forums.pelicanparts.com/uploa...1662082371.jpg

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

CIS = Warm start problems for those who should not be effing with their cars.

Motronic - slightly different logic except only one bank pisses fuel in pulses vs all six cylinders all the time. The barn door air sensor is vastly superior to the CIS air sensor. Pfffft.

Both are dinosaurs. Good dinos each in their own way.

Fight me.

?
http://forums.pelicanparts.com/uploa...1662085433.jpg
(I cheated)

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

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.

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.

Is a turbo :D

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.

<iframe width="1280" height="720" src="https://www.youtube.com/embed/wpRYJ7C-y0s" title="M491 Goodness" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

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

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.

That is a beautiful wheel.

I even like the "bus" wheel.

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.

http://forums.pelicanparts.com/uploa...1662121782.JPG

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.

I far prefer
https://cdn.elferspot.com/wp-content...-1024x678.jpeg
(which was also the wheel used on the 959s)

to
https://www.picclickimg.com/d/l400/p...ke-Vintage.jpg
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.
https://cdn.elferspot.com/wp-content...g-1024x576.jpg

And the wheel that Joe posted is also very nice.

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

https://rennlist.com/forums/attachme...w-dscn5398.jpg

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

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.

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

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.

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.

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.

One of each! :)