What is in a 964RS motor?

pbs911 · pbs911's Garage

In my quest for a 3.6 conversion I have come across a 964RS motor. Does anyone know the differences between the 964 and the 964RS motors?

k9handler · 12-05-2002, 11:24 AM

I have been doing some research on this...www.instant-g.com will give you many answers.

M64/03 or 964 Carerra RS motor had 260 HP, with a lightweight flywheel and more impressive to me is 339.5 lb/ft @ 4800 rpm.

Bruce Anderson's book has a small section on these motors.

Bill Verburg · Bill Verburg's Garage

M64/03, 964 RS, 3600cc, 11.3, 260@6100, 325nm@4800, 226kg, single pulley

Eric Mckenna · 12-05-2002, 11:47 AM

I tell ya fella's if you can score one the Euro RS 3.6 is a super way to go!...

k9handler · 12-05-2002, 11:59 AM

Eric,

The only Eur 964 RS or RSR were both 3.8 motors...that's where the street version gets 300 HP...while the racing versions were 340 HP for the RS and 350 for the RSR.

Just a little insight from the Bruce Anderson book.

Eric Mckenna · 12-05-2002, 12:02 PM

Smitty,
Are ya sure.... I am pretty sure that the 92 Euro 964 RS was a 3.6 Ltr.. I'd bet my Life on it and I am not one to Gamble unless i know the outcome.. Ask Harald.... I like B.A. and all but i think he may be wrong. I think
Eric

GeorgeK · 12-05-2002, 12:04 PM

The 3.6 engine from the 964 RS, has nothing special, apart from a lwt flywheel, and a single pulley setup.
Every engine goes on the dyno at the factory, and they would simply keep the better ones for the RSs.
I have seen so many rebult by my mechanic, and there is not one difference.
GeorgeK

Eric Mckenna · 12-05-2002, 12:08 PM

george,
But the mere weight loss of the RS couldn't be all it is.. Don't they have more Tourqe and higher Rev limit?

k9handler · 12-05-2002, 12:10 PM

Eric...checked the engine vin guide, and no specific euro 964 RS motor in 1992...the M64/03 was the only RS motor at the time. I will check with Harald as well to make sure...you can never have enough sources.

Eric Mckenna · 12-05-2002, 12:20 PM

Please do.. I am SURE that those bad mothers came out in 92 as i have an old Mag that has a review on one talking about how NO ONE liked it back them. as the ride was too harse.. well now they all love it.. go figure.. what a diff 11 to 12 years can do .. hahaha crazy people.. I loved it as soon as i read about it..

Eric

pbs911 · pbs911's Garage

Thanks for the insight. The motor came out of a 93 if that makes a difference. I do not know if it is a Euro motor yet. I'm just wondering if additional $ is worth it.

Eric Mckenna · 12-05-2002, 12:26 PM

I would have to say yes.. in my humble opinion.. just for the pure and simple fact it is an original Euro RS 3.6 Ltr and there were not many Produced.. so that is cool plus .. and most importantly it should make your Black Bird Fly!!!!!!!!!!!!

HAHA Eric

Bill Verburg · Bill Verburg's Garage

The 260hp 964RS M64/O3 was available in 92 and 93. As George stated there is nothing special about them except the single pully, lightt f/w, and the selection from the extreme end of the bell curve. Cams, cr, pistons, DME, intake were the same as all other versions. You can get more power fromany normal version w/ a chip.

There was also an M64/04 350hp@6900, Carrrera RS w/ 6 individual throttle bodies and 3.8 liter displacement . The ebay engine is not that one.

k9handler · 12-05-2002, 10:15 PM

Eric,
Harald sent me an email and stated the M64/03 was the only RS motors, and there were low production numbers.
He did say the engine would sell for over $9k though!

Eric Mckenna · 12-06-2002, 03:02 AM

Thats the one I am saving up for!! I knew there were 964 Euro RS 3.6 ltrs.. otherwise I wouldn't have bet my life on it! HAHAHAHAHAHHA

i think i am pretty sure I NEED ONE! hahaha I'd better get to saving.. so keep yer eyes for one open for me while yer over there. ok..

Eric

GeorgeK · 12-06-2002, 03:09 AM

I sure hope you are not going to pay 1K over for a 964 engine because it came out of an RS. No difference.
GeorgeK

Eric Mckenna · 12-06-2002, 03:17 AM

George,
Would it cost me more to buy it out right having a bit more Torque and higer rev limit.. or to buy a standard 3.6 Ltr and but the parts to do the mods my self?

Eric

GeorgeK · 12-06-2002, 03:49 AM

Eric,
Every engine is bench tested at the factory, and the best ones went in the RS. That doesn't mean the engines in the Carrera 2 and 4 were bad. There are definitely engines in 964 that are as good as those in the RS.
Money wise, you put a Cup exhaust tube, a lwt flywheel, and a single pulley, and you are at RS level, if not above. I doubt there is 1K in these mods.
The point is, selling a 964 engine for significantly more because it comes from a RS doesn't make sense.
GeorgeK

12-06-2002, 06:37 AM

Here's a very nice German RS enthusiast/owner site: http://home.t-online.de/home/320014143490/

Nice pictures and good info.