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40th missing a third radiator

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6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCH40th missing a third radiator

Leading reported evidence

Check engine serial number

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No successful repair reported for this finding.

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Suggestion · Original poster

Tomorrow I will check my engine serial number with Porsche NA to see if it is a standard C2 motor or a 345 hp motor.

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40th missing a third radiator
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Leading evidence: 'Check engine serial number' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check engine serial number' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

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Suggestion

The ones in my Turbo used to run all the time when I parked it.

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40th missing a third radiator
Frequently discussed actions (2)

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Check engine serial number

No successful repair reported for this finding.

0
Reported fixes
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Unsuccessful attempts
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Discussions
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Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

Tomorrow I will check my engine serial number with Porsche NA to see if it is a standard C2 motor or a 345 hp motor.

Original post Read captured discussion
40th missing a third radiator

Run time

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

The ones in my Turbo used to run all the time when I parked it.

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40th missing a third radiator
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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

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Generation: 20261027T060112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

The 40th Anniversary 911 comes standard with the power kit, which according to my research includes a third radiator. Guess what's not under the grill in the middle of the turbo bumper? The local Porsche dealer has another 40th on the lot and I had my salesman check under the bumper and it also does not have a third radiator. Fellow 40th Anniversary owners need to look for their third radiator. Power kit owners. Do you have a third radiator? Did anything change in 2004? Did Porsche conclude that the M96-03 motor did not need a third radiator with the X-51 kit and fail to inform anyone? Tomorrow I will check my engine serial number with Porsche NA to see if it is a standard C2 motor or a 345 hp motor.

POST 2Original post

I added the x51 package to a 3.6L. As I recall the third radiator was optional. I passed since I had already added one.

POST 3Original post

I have read in "Excellence Was Expected" that engine cooling is improved on the C4S nose enough that it doesn't need the third radiator. The 40th shares the same basic nose. But TTs have the third radiator, and I'm sure the GT3 does too, go figure.

POST 4Original post

DJ996 is correct the C4S does not get a 3rd radiator with an X51 package. As a matter of fact it is specifically called out in the X51 install instructions that C4S does NOT get the 3rd radiator.

POST 5Original post

Probably doesn't need one. My auxillary fan in the engine compartment never runs either. Even at 108 degrees outside temp. The ones in my Turbo used to run all the time when I parked it.

POST 6 / ORIGINAL POSTEROriginal post

Thanks for the rapid response! I suspected the same after seeing that the dealer's other 40th had no center radiator. I'm going have to speak to the service manager at the dealership again. He told me yesterday that I should have a third radiator. It will be interesting to see where this leads.

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