3.6 conversion question
 

how much of a different will I see if I convert my 79SC to a 3.6 varoram motor. I have been debating whether to install a 3.6 or buy a new car with more power.

HP increase ~ +100 and several thousand $$$ likely missing from your wallet.

Dramatic difference in power and torque. If you sell the motor you have it will help defray the cost. No regrets here.

Its really fun to have an older car with more than stock HP.
My 77 targa has almost 100 hp more than stock and power to weight ratio thats close to waterpumpers.

I do a lot of track days with other Porsches and its so satisfying to hunt 996/997 cars, even GT3s if the driver is bad. Usually they are surprised when they can't shake you even on the straights! :D

All of the above :)
Not to mention,no more valve adjustments ...

Cheers
Phil

If you go with an air-cooled 3.6 993 motor you are getting one of the strongest, most reliable motors Porsche ever made.

If however, you find a newer 996/997/cayman you will end up with an M96/97 motor that has had a boat load of problems.

It is very expensive. I am doing it now. There are expenive parts other than the motor....I just spent $2000+ at Patrick Motorsports. And that is with my having the engine tin and some other parts.

Also, I wanted a brake upgrade to match the engine...another $2000.

However, for me to get my 3.0 engine rebuilt it would have been at least the cost of my 964 engine.

Spend it wisely...I'd redo the engine. Its more fun to put more HP on an old car
instead of buying one with a bigger engine, it gives the ole' car...balls :D

A thought on the matter, does all aircooled 911 engines 65-98 fit any bellhousing of the 901/915/930/g50 ofc disregaring the cluch. The reason i asked is that im keeping one eye open for a 3,2/3,6 at the same time im rebuildning my old engine. I have a 3,6 rs single mass flywheel collincting dust on a shelft, just for fun i tried to mate it to my 2,7 and it will hardly even clear the flange for the bellhousing(theeth for the cranktrigger sticks out but the bolt patter for the springplate looks the same) so im wondering if i can mate a 3,6 to a 915 transmission?

.
.
.
BIG difference -- more HP and more importantly lots more Torque

BUT, you need more oil cooling and a very sturdy (meaning rebuilt strong) transmission
- We used CMS for our 915 rebuild after breaking a pinion tooth and they added some
stronger parts.

Yes, 3.6 bolts up to 915 - but need a Patrick flywheel

Regards,

Yes, if you have the right flywheel. Depending on combination you may need a special flywheel such as 3.6->915.

But it's not advisable to mate a 3.2 or bigger to a 901.

Anyone got a max tourge figure for the 915? Made a iquiry at renaged and the clamed running 400hp smallblock on. 915 was no problem, of thats true its should be able to handle like 550Nm for normal aplications?

It's no problem right up to the point when it grenades.

I would say 300Nm in the long run if you don't abuse it to much. If you add parts that hold it together it can take more torque or abuse.

http://forums.pelicanparts.com/uploa...1317184645.jpg

Yes - Patrick Motorsports makes a flywheel
Patrick Motorsports | Porsche & Mid Engine Conversions

good info here too: InstantG's Home Page

3.6 in an earlier car makes for a fun package!

http://www.thehulltruth.com/attachme...-dl-13-193.jpg

Do it. You will have no regrets and it will be hard to drive the car while laughing so hard.
I have a 1975 911S w/ M64 3.6 Metzger engine. Owned it 8 years and still cannot sleep the night before i am going to drive it- it is that cool.
As far as differences between old and new: if you enjoy the process of the build, mechanicals of a true race engine with heritage, and a more convulsive experience go with the 3.6 in the SC.
If you are more new technology, gadget, less driver input, go with the Subaru motor cars (newer).

As far as the 915 trans- i have a magnesium cased 915 in mine.
It has run 200+ track days, 35+ GTS class races in NASA and PCA Club Racing.
I have a Setrab cooler with a Tilton pump that has helped keep the tranny cool.
But i will say, for DE/ TT/ you will be ok; for racing, i have had two failures / rebuilds of the 915 trans. It is a lot of torque for a weary mag cased box!

Thx guys, love the look of you car Jeremy i think om going to get a rsr spolier and loose the 930 wing before i repaint my car! Having a real hard time making my mind up whether i should get a 3,6 or go through with the supercharger conversion? Im sitting here stairing at a Vortech V5, im a desgin egineer by profession so i have designed pullys, mounts and beltdrive to mount it to Porsche engine. Just cant make up my mind if a 3,6 is more bang for the buck?
http://forums.pelicanparts.com/uploa...1380739020.jpg

I think I will be doing the swap. I would like to end up with 300 rwhp at some point in the future.

Hang on to that 3.6 single mass flywheel. I did my 3.6 swap into my '80SC way back in '92. Back then there weren't any fancy swap kits or conversion parts. Had to figure out
the wiring etc. I thought I was stumped when I tried to figure out how to hook up to a
915. The motor came with a single mass flywheel ('89 C4 only). My solution was to use the 3.6 flywheel and have a machine shop redrill and thread it to take a 915 pressure plate.
Twenty one years later, and the old girl still runs like a raped ape! So really, Patrick doesn't
have a monopoly on conversion flywheels. You could convert yours!

Here's my 95 3.6 bolted to a built 915 that used to live behind Spuggy's turbo engine.

http://img.photobucket.com/albums/v6...7DDE5E76DC.jpg

I am doing a 3.6 conversion on a 84 cab. I got the conversion kit from Steve at instant-G. If anyone is interested I will send pics this week.I think it is tough horsepower to beat for the money. Also a ton of torque. I will admit I do like the responsiveness of a short stroke motor though.

If you need any tips/help , my 3.6 conversion is still fresh in my memory,it's only been three months ... lol

Cheers
Phil

Both?:eek::D

Thx, ill keep that in mind.

P.s just saw that -big mac and fries motto, lauged so hard i spilled my beer, you owe me a carlsberg!

my sc went from swift to fast. now chasin cup cars.

Any one can help me please,what type of clutch you use for a 3.6 with 915 gearbox?any part# ..

Check out Patrick Motorsport for a conversion flywheel and a beefier clutch. I think they have a kit with everything.

A Sachs "Power Clutch" is what I used on my Instant G conversion.

My car is @ Aase motors for commissioning, here is a couple things to consider

Think about mounting the "puke tank" you will need in the left fender well to eliminate oil mist in the engine compartment.

Get yourself the proper race fuel compatible AN-6 sized poly tubed lines with stainless braid to replace the stock SC fuel lines. This thin wall poly tubing will allow both lines back through the tunnel as required.

The brake change you desire to due because of the conversion is the "slippery slope", proceed wisely and READ this forum

The 3.6 motor will sit lower after install with the IG motor mount, look at the tension on the drain line from the oil tank. I am replacing the 35 year old hose with a longer one

removed stock oil lines and had custom oil lines mounted for my 315 tires w/o spacers, again NO 35 year old oil lines to worry about

Big ass oil cooler with max air flow

old post
ok No one said that, after the conversion you or anyone including me
could not wipe off that smile:) the roar of that 3.6L intoxication

Yes, but new question!

enough
 

All of this sounds sweet but lets see a few more pics of these converted cars. Come on, you know you want to. We want to see them. I love the concept but have an un-cooperative CFO.

Here you go:

http://forums.pelicanparts.com/uploa...1426038143.jpg

http://forums.pelicanparts.com/uploa...1424031119.jpg

My conversion is about 15 years old. Still very happy with the power. Get the car down to 2500 pounds and the engine close to 300 hp and you're at a certifiable sweet spot, at least in this driver's opinion.

I have a 2500 pound M491 coupe with a 3.6. It is glorious. With close-ratio gearing, it is wicked fast. Quite a bit faster to 100mph than my E39 M5. It is so fast that I can't give it full throttle for more than a few seconds on any public street. I'm in the process of making it heavier, slower, and more civilized so that I'll prefer to drive it in more situations.

That said, I my E39 M5 was $18k, and is not depreciating over time. I think in 2016, a 3.6 swap will cost you quite a bit more. In fact, I think you could get an LS3 in there for less money [citation needed] and you wouldn't have to worry about a $15k rebuild 100k-200k miles down the road...I think there are also people getting similar power from 3.2 engines via modern fuel delivery and the tweaking of intake, exhaust, and ignition [citation needed]. Love mine, but I don't think I would spend the money to do it these days.

Even 912Es are fun to drive, so be clear on your goals. What would you use this car for 80% of the time? You have the opportunity to buy a 996tt or Corvette and call it a prudent financial move...

Ah, crap. Got sucked into a thread resurrection.

+1

My conversion is about ten years old with no problems. Lots of torque. Miss the engine braking deceleration from a lower mass piston/higher compression 2.8L, but you can have that as well with $$ mods from someone like Jeff Gamroth.

http://forums.pelicanparts.com/uploa...1451917250.jpg

What in the world is that intake?

Looks like an attack ship off the shoulder of Orion.

Varioram (early without script) with JRZ external shock reservoirs mounted on it...

I did a 3.6 964 conversion into my '80SC in 1992. Back then there were no fancy retrofit kits offered anywhere, had to figure everything out and craft the things that were needed myself as well as sort out the wiring. All in all, it wasn't all that difficult!
Lo 23 years later, having used the car as a DD for ten or so years and as a weekend car since then, I could not be more pleased with the outcome. The retrofit resulted in a
virtually trouble free car that is as dependable as any DD I've ever owned. Great upgrade from the original '80SC with that trouble prone CIS system!
My first step at an upgrade was to install a 3.2 Carrera motor, but it didn't give me
the "kick in the butt" that I was hoping for, so a 3.6 it was.
The added horsepower is great, but the torque is what rings my bell. A good friend
911 Carrera owner drove my car and came back saying "Man that thing pulls like a V8"
To anyone considering a 3.6 upgrade, go for it if you can financially pull it off, you'll
never look back!

I've had 3 different 3.6-3.8 motors in my '76

first was in '94
'93 964 3.6, it was nice but I wanted a little more power
http://forums.pelicanparts.com/uploa...1451953731.jpg

so in '00
'97 3.8 RS vram, this one was too much for the 915 in std form
http://forums.pelicanparts.com/uploa...1451954071.jpg

soo in '04
'95 993 3.6 w/ RS cams, this one is perfect
http://forums.pelicanparts.com/uploa...1451954160.jpg