People really need to stop making this comparison.

You are a good man, Tips, butt I already knew that, buttofcourse! :D


Why - it's both fitting and funny?

The idea that a woman's value is tied to her chastity is disgusting.

Back on topic for a change ... my take on executive summary of thread, two approaches:

• NA hotrod with cams, carbs, slight displacement/compression increase, etc: Relatively modest HP gains. Sounds and looks shiny. Really bad fuel economy and tricky setup with carbs. Can be very expensive.

• Turbo: Dial your desired tradefoff between HP and engine/transmission grenading, much more power dangerously on tap. Not as exciting and shiny for sound and appearance. Maybe not as commonly done? Not sure if many shops could pull off a conversion now days, you are more on your own. Maybe less expensive per HP than above.

Comments?

seems there's also a third track that sal (scarceller) and others are focusing on -- namely, going to 3.4l or 3.5l using the existing 3.2 induction system with hotter cams and twinplugs. This is a lot less "shiny" than the carb/itb solutions and looks to avoid the fuel economy/tricky setup issues caused by carbs and the complexity of converting from motronic to efi. My take is that the extra power gained by the displacement bump, cams and timing/compression advances allowed by twinplugs provides a demonstrable (but pricy) gain under this scenario.

I like to keep my decklid closed (don't really care about engine appearance), but do enjoy the immediacy of n/a power (vs even the slight lag created by a modern turbo system).

Agreed. Never said anything about chastity. Could be talking about long walks on the beach. Point is, i want to have fun with a girlfriend/car (or substitute girlfriend with boyfriend, or both, i wont judge), i am not going to sit quietly holding hands for years when we can be out living life and having fun (on the track).

To me cars are like relationships. I like relationships that are more involved... And long term. I invest in my relationships and manage the ups and downs for the long game.

Back on task... My build decisions did not involve an unlimited budget, and reliability and drivability were key. I kept motronic and stock induction, sort of. I added a MAF from sal carceller and it should do well for my intake needs, without the fuss of carbs. I am aiming for 275 hp with 91 gas, single plug, and smog (964) cams. I want reliability and drivability and my build is pretty plug and play, so could be done as a diy as long as you farm out machining. Combine that with guard short gears and 400lbs weight loss and me and a local 2400lbs 3.6sc should be about neck and neck.

Mind you, i started my project thinking budget... Then eventually threw that out the window. So follow your heart. The 3.6 will be easier to get more power from. Just build a strong gearbox or expect to pay if you plan to drive it like you should.

One other thing to consider between the two options that Jeff summarized is what "type" of performance someone is looking for - a turbocharged engine, even with relatively low/safe(er) boost levels, will blow (literally) the attachments off of a big bore n/a 911 engine in terms of "holy shart" acceleration and so forth. And as others have mentioned, with proper turbocharger choice and fueling, lag is almost non-existent, so low RPM driving manners (like around town) are very "normal".

So if one enjoys the "pull yer arms out of the sockets" feel of power, then the choice is pretty easy.

Turbo is a great option if done properly... No question. Probably better bang for buck. But with everything going turbo... I want to preserve my NA engine. Some things are about more than power. But that is just me.

3.6 swap

Hot 3.4 or 3.5

Turbo 3.2

Keep er stock

All good options.

(And these threads always go there, but if max power and lowest cost are key... Sell the 911, buy a new mustang GT and get ready to poop yourself)

^^^

Good point about the "if done properly", and looking back, I see that the OP said he would probably pay a shop to do the work, so maybe turbocharging would not be a good option there unless the dude's pockets are very deep. I would want a fortune to build, install and tune a custom turbo system on someone's 911. :)

This is a really good thread, lots of useful stuff!! Good work Pelicaners. :)

Sounds like the OP would be a good candidate for a small supercharger. I ran a Paxton SN2000 on the same 3.2 before going turbo. It was awesome. It basically made the 3.2 feel like a 3.8 with a very linear power curve. I ran it behind a 915 for years going full throttle in every gear no problems, which is due to the fact that the Paxton is a centrifugal unit unlike a roots type. The SC was virtually undetectable other than the whine at high rpm's, but driveability was like a normal 3.2 until you hammered it and the 3.2 felt like a big 3.8, building torque just like a na engine in a very smooth liner fashion.

Then the obvious question ... why did you abandon it and go turbo?

Turbo delivers much more power, but the SC still delivers a nice punch for those who want to get their 3.2 in the 315 to 325 hp range. Im just greedy like lots of others on this forum. :D In hindsight, the SC is actually very well matched to the car. Yes the turbo is relentless in its pull but that now creates a new set of problems, like the 915 gearbox. If you want a nice 80-100 hp bump without changing the feel of the car in any way, the SC is hands down the better way to go. Here is the link when I sold the set-up which shows all the components. Kinda wish I kept it....


http://forums.pelicanparts.com/porsche-911-used-parts-sale-wanted/623428-paxton-supercharger-kit-3-2-a.html

I would walk 3.6 conversions all the time when I ran that unit. :D To put things in perspective. Back in 2011 when I ran this unit the car was about even with a Z06 Corvette of that year. (2010/2011) With the turbo I recently ran up against a ZRI and I put a car length between us. That is the difference.

Yep, better on 915's!

Ha ha - no doubt about that, Rod! I see the power levels that Tippy (just the) and others have and my bowels quiver with envy! One of these days Imma get me some of that really big bang, too! :D

I'm in the midst of building a 3.8L (3,746cc) based on my '87 Carrera 3.2L I'm hoping for a conservative 380Hp on the crank (my engine builder expects it to be over 400).

I'm curious,
- What's the bore and stroke on this build?
- What cyls and pistons?

That's a big jump in displacement.

The cylinder studs need to be moved for this, right?

Always a bigger fish