Max power from a 3.2 Carrera engine

[overbooost]

Whats the most powerful 3.2 carrera engine that anyone has either come across or got themselves? Also if possible list of mods and costs would be very helpful.

Many thanks - Sunny.

[Nine9six]

I installed a supercharged flux capacitor, with sequentially actuated dylythium crystal turbos for a little under $108K. However. its the cost and avalibility of plutonium that becomes the real issue.
I see power in the millions of lbs of thrust, with a relatively flat torque curve. This is very desireable when comming out of the slower turns strong, and launching down the straight.

[MotoSook]

Turbocharge it! How much power do you want?

[cgarr]

Originally posted by Souk
Turbocharge it! How much power do you want?

And how fast do you want to spend $$

[overbooost]

I don't want to turbo it as I would rather put a whole new turbo engine in there instead of rebuilding the existing high comp NA engine. What I want to know is what is possible using the stock engine. This is my daily driver. My other car is a 600bhp FWD street legal drag car.

Thanks - Sunny.

[MotoSook]

Without internal modifications, you will be lucky to get 240 using traditional external mods (cat bypass/pre-muffler, muffler and chip).

You mention stock, but in your original post you wanted a list of mods...???

[overbooost]

What I ment by stock was 'stock' engine...ie crank, pistons, block, head. Mods could be camshafts, air filters, ecu or dme chip etc.

Sorry about the confusion.

Thanks - Sunny.

[derickc]

Sunny,
Bruce Anderson's book will tell you the basics may get you to the high 220's to 230 or so (chip, headers, etc.). You can get maybe 250 with cams, webers and nice headers. Above that you have to rev it, increase displacement, etc. requiring significant bottom-end rebuilding. The euro cars are a little better on all fronts due to increased C/R.

-dc

[overbooost]

Thanks Derick.

The UK spec '89 3.2 Carrera's are supposed to be 231bhp out of the factory?

[JeremyD]

Porsche did a pretty good job of extracting the HP with stock means - I'll second Derick's response.

Now from a 3.2 (actually 3.3) pretty sure Juan Ruiz got close to 700 ponies with a big honking turbo....

[overbooost]

Holly $h!t, just done a search on Juan Ruiz!!!! Sure it's turbo'ed but.....jeeeeezzzz!!!








Done 140mph terminal down the 1/4 mile now that is POWER!!!!

[derickc]

Originally posted by overbooost
Thanks Derick.

The UK spec '89 3.2 Carrera's are supposed to be 231bhp out of the factory?

That's right, so you *may* be able to get another 10 to 15 with simple bolt-ons and 30hp with a full cam, weber, big header conversion. You won't get more than 260 hp max without more displacement and more revs (bigger P&C's and better rods, etc.).

The problem is that you spend $10,000 plus to get to 290 to 300 hp and you end up with an engine that peaks where the torque curve of a properly tuned turbo just begins...

-dc

[450knotOffice]

How true! IF I decide to keep the 3.2 instead of trading up for a 996 C4S, then I will most likely go the turbo route myself. It really seems like the easiest way to some good HP and TQ numbers. I'd be looking for HP in the 375 to 400 range if I go that route.

My biggest stumbling block is the fact that I'd need to reconvert the engine back to stock every two years for emissions inspection purposes. What a pain in the arse that would become.

[Steve W]

From a customer, not a turbo, but a normally aspirated 84 3.2:

single plug and had the "flapper box" intake
Mahle Euro p/c set w. 10.3:1
Webcam 20/21 grind cams
Sachs Power clutch w. alum pressure plate (-4lbs.)
Complete competition valve job w. 9k springs & Ti retainers
polished heads
headers & megaphones
K&N Cone airfilter
Custom chip for above and 93 octane

Power is put to the ground thru a custom 915 gearbox w. short 3/4/5 GT Racing gears & 80% lsd. Gear ratios determined by Hayden Burvill of WEVO.

Power is 247.6 at the wheels on a Dynojet 248c, so assuming a 15% transmission loss, that is around 290 at the crank.

[cmcfaul]

Why not just spray it (No2)? The amount of HP is up to you and how much the engine can take. HP / $ has got to be the best bang for the buck. DIYer is prob a few hours to install.

my 2 cents

Chris

73 911 E

[450knotOffice]

Not knowing anything about NO2, what are the drawbacks to its use? It seems to me I remember from my earlier days that the street/strip crowd used it only sparingly and frequently blew up their engines with the stuff.

[bigrubberjeep]

Want to go faster with a "stock" 3.2,

add SW Chip,
add a less restrictive muffler

add lighter body parts. F/G everything that bolts on, Fenders, Hood, Engine lid, bumpers, remove unecessary interior parts.

Then lower the car just a bit.

[Glasgow 911SC]

Originally posted by bigrubberjeep
Want to go faster with a "stock" 3.2,

add SW Chip,
add a less restrictive muffler

add lighter body parts. F/G everything that bolts on, Fenders, Hood, Engine lid, bumpers, remove unecessary interior parts.

Then lower the car just a bit.

It seems the 3.2 can be an expensive engine to get more juice from so what Bigrubber says would be my choice. Once you have removed all the steel parts they can be sold and some of the outlay recouped.
You only have to drive near a Lotus Elise to see the effect of lightweight!

[masraum]

make the car weigh 1800#s.

These engines are built to the max from the factory, so to get more power you'll need to speed cubic $. I saw an article about 5 years ago in "911 and Porsche World" where a company on the Germany/France border called something like "sportwagon systems" swapped the no cat exhaust for a high flow cat, the 993 hot wire MAF, and bigger injectors and dynoed the car at 254hp.

That's probably your best bet.

otherwise you could spend tons of money and probably get 300-350 na or a lot more with a turbo.

[greglepore]

I've been thinking turbo lately, but also have to wonder how much you need to spend to have a 915 that's up to 400hp reliably.