9A1 engine news

[BoxsterGT]

Anyone have new info on the Direct Injection 9A1 engines?

Are these being used in the new turbo and GT3?

450 hp normally aspirated is quite a punch for street use.

Len

[Steve@Rennsport]

Len,

The 91A is now being used for all models except the GT-3, and Twin-Turbo/GT-2. Next year, the turbo cars will get the 9A1.

[BoxsterGT]

By "next year" do you mean 2010 model year or 2011?

What does the 2010 GT3 RS that was just announced use?

Len

[Steve@Rennsport]

Originally Posted by BoxsterGT

By "next year" do you mean 2010 model year or 2011?

What does the 2010 GT3 RS that was just announced use?

Len

PCNA said that the 2010 Turbos will get the new 91A: the GT-3's retain the current GT-1 based engine.

[BoxsterGT]

Any news on these engines?

Now that they are they being raced have any weak areas or failures surfaced?

Just like to be informed.

Len

[Steve@Rennsport]

Len,

These engines are not yet raced by the factory; the GT-3 Cup and RSR's have the older 962-based motor that makes 480-525+ HP.

The new 997TT's have the new motor and they do make big power.

In a few years, we'll know how durable they are and what weak points need to be addressed.

[Flieger]

I think the 997 GT2 RS is still using the Metzger motor.

[GrantG]

Originally Posted by Flieger

I think the 997 GT2 RS is still using the Metzger motor.

It definitely is and in only 3.6L displacement (new GT3/RS using Metzger 3.8L)

[GrantG]

Originally Posted by Steve@Rennsport

In a few years, we'll know how durable they are and what weak points need to be addressed.

Steve - when do you expect to see the 9A1 raced (added to the GT3)? Do you think they'll add a real dry sump with separate oil tank or continue with the multiple oil pumps and "integrated" dru sump? I also wonder if they'll still use Ti conrods in the 9A1 version of the GT3.

I guess it's also possible that the next (991) GT3 racecars will continue on with the old Metzger motors and then only the RS versions of the next GT3 will have them for the road (for homologation).

[Steve@Rennsport]

Originally Posted by GrantG

Steve - when do you expect to see the 9A1 raced (added to the GT3)? Do you think they'll add a real dry sump with separate oil tank or continue with the multiple oil pumps and "integrated" dru sump? I also wonder if they'll still use Ti conrods in the 9A1 version of the GT3.

I guess it's also possible that the next (991) GT3 racecars will continue on with the old Metzger motors and then only the RS versions of the next GT3 will have them for the road (for homologation).

Hi Grant,

Good question,.... Porsche invested a ton of money into the current race engine to help keep it competitive and they would need the same durability and performance to consider a switch. Iif history is any guide, I'd guess they are testing the 91A to destruction to find the limits and developing the whole package to see if it can make the same power, reliably.

I too, wonder if the integrated "dry" sump system will be used for competition. That was primarily designed to reduce fuel consumption and save production expenses.

JMHO, but I think the cars powered with the Metzger engines will be collectible, due to their heritage and successes.

[BoxsterGT]

Its almost the end of the 2010 race season, and at least a few Cayman race cars have competed this year.

Any news on their performance & durability?

Len

[BoxsterGT]

Anyone know of upgrades to these motors for the coming race season?

How are they holding up?

Len

[BoxsterGT]

Any of these 9A1 motors showing up with issues now that a few are being raced?

Len

[BoxsterGT]

Whats the latest on this motor? Any issues since it has been raced?

Any chain or bottom end issues?

I hope to own one some day.

Len

[KNS]

Weren't they experiencing some direct injection issues?

Perhaps no news is good news...

[BoxsterGT]

Methinks the Cayman race cars are using the new motor.

Any issues w them? Is "Direct Injection" an asset or a drawback?

Len

[Matt Monson]

This engine is in the Interseries Caymans. I don't know of any failures of them.

We've seen some of them pop in Grand Am (you can see BGB losing one quite spectacularly on their GX class Cayman during the 6 Hours of the Glen a week ago). But it was a high hour engine and for GA usage they get tuned to the ragged edge with reflashes. They blow every now and then, but there is no engine in Motorsports that doesn't pop on occasion.

On the whole they have proven to be quite durable. 3 of them completing the 24 Hours if Daytona is a pretty good testament to their longevity.

[howard freeman]

Coking intake valves, causing misfire codes are one issue as well as timing chain wear. MA 1. engines are much better than the M96/97 engines, but it isn't a Mezger.
Howard

[hyatt]

The new 991 GT3 gets rid of the Mezger motor and goes with a slightly modified 9A1. 9k rpm and a warranty. These are great times we live in!

[BoxsterGT]

Thank you.

Does the new 991 GT3 have a dry-sump system?

Len