Alan C.

I didn't find the 964 series to be a low point. Both my 93 RSA and my 94 3.6 turbo were bullet proof. Both were tracked and the RSA had more track than street miles.

rodsky

I sorta found it to be a low'ish point. I had one for 3 years. It was my least favorite Porsche. The 993 that came out was simpler, better, faster and easier to maintain. The 964 seemed to be overly engineered, too complex, too many points of failure - but thats coming from a simple guy.. 993 was a big step in Porsche's recovery.

Alan C.

The RSA was consistently quicker than either my 95 or 96 993. Maybe it just suited my driving style better than the 993.

ADias

The 964 was the last of the classics, albeit a very evolved classic. The 993 has a big aura as the last of the air-cooled, but it is the start of a major departure from the classic concept - heavy too.

Between a 964 and a 993 I would get a 964.

rodsky

I'd take my old 3.2 over my 964. However, if you said it was a RSA, I'd pick the RSA.

BC-997

Isn't your post, by definition, 'conjecture'? Just saying...

SteveFromMN

I had a 99 996 for 12 years with no problems but was curious also as I read all the bad stuff over the years.
What I have learned is this:
When Porsche introduced the water cooled engine they also tried to reduce mfg cost and improve efficiency. They hired Japanese consultants. The new engine had 408 parts vs 480 for air cooled engine. They went to Locasil block. This required high pressure casting with silicon cyclinder liners. This also produced a block with an open deck. They used the IMS which had bearing problems. I think this engine design might have met the cost target by was a marginal design. Porsche chose not to use this engine in the Turbo or GT cars but instead used the Mezger engine. This engine has been bullet proof which tells me it is a stronger engine.
The new engine introduced in the 997.2 has no IMS uses Alusil block with low pressure casting technique. It has a closed deck. The vendor for both blocks is KS. They have write ups on both types on their web site. Porche is now using this new engine in the Turbo. I think that says it all.

Ahsai

Hi all, any update on this thread? The last post was 1 yr ago so I assume no news is good news?
Also, any more info on the 9A1 design itself? Googled didn't turn up much other than no IMS, DFI, pseudo dry-sump, etc. Any articles giving more details explaining the engine itself? TIA

slicky rick

Its the engine that will carry the 911 through the next decade at least..for all variants of the 911.

Ahsai

Yea, a know a lot is riding on it. I guess no news is good news here as most happy users will not come back here and rave about how reliable their engines are.

jhbrennan

Yep - the usual posters are those having problems.

wwilliams88

Well, as a single data point, I now have 49.5k miles on my 09 Carrera base with no engine issues. PDK seems reliable as well. Fuel pump was replaced as part of the campaign, but the old one was working fine. So far, so good. I am the original and only owner.

wwilliams88

Regarding more detail on the engine, you can get the 997.2 technik book from Suncoast or donate to Renntech.org and download it. It discusses the engine with emphasis on the differences compared to the 997.1.

kouzman

the only two issues i know with the DFI engines is the fuel pump as other people said and in some cars, a bearing going on the water pump or something and changing the water pump under warranty...

Other than that i haven't read anything else...

Ahsai

Nice to know and thanks for all the info and tips! Oh and congrats on a bullet proof platform!