5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHbumper swap, what to do with radiator ducts
Leading reported evidence
Replace ducts, or making modifications
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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.
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
I've read a few threads on bumper/front end swaps and never actually read anyone give feedback about running without ducts, changing ducts, or making modifications for original ducts.
Leading evidence: 'Replace ducts, or making modifications' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace ducts, or making modifications' (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.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
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.
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
I've read a few threads on bumper/front end swaps and never actually read anyone give feedback about running without ducts, changing ducts, or making modifications for original ducts.
Use aftermarket bumpers and not having the correct ducting
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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.
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
I have read of some members using aftermarket bumpers and not having the correct ducting and that has caused over heating issues.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace ducts, or making modifications
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
I've read a few threads on bumper/front end swaps and never actually read anyone give feedback about running without ducts, changing ducts, or making modifications for original ducts.
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
I've read a few threads on bumper/front end swaps and never actually read anyone give feedback about running without ducts, changing ducts, or making modifications for original ducts.
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.
5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T161109Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
so before I get flamed, I did a good amount of research on this. When I bought my 99 c2 it already had the 997 replica bumper on it. I didnt mind it so left it on the car. The issue I'm having is the radiator ducts dont line up (bumper comes out about 3-4" past where the factory 996 ducts terminate). I've read a few threads on bumper/front end swaps and never actually read anyone give feedback about running without ducts, changing ducts, or making modifications for original ducts.
if anyone wishes to share their experience with 997 ducts mounting to 996 radiators, or other ways they've accomplished good airflow to the radiators with a 997 bumper, I'd really appreciate it.
Welcome!
I have read of some members using aftermarket bumpers and not having the correct ducting and that has caused over heating issues. This was however only on the track, if you're having stable temperatures I wouldn't worry too much.
However do monitor the temps and if they increase or you have issues then you'll need to take action.
thank you, but the idea is to survive a track weekend. On the street, with my home brew duct work, it works ok for now but I'd like to get a proper duct set up on there.
Not having done any track time with my 996 myself but having read a fair bit about it cooling is very important.
Then as your skill progresses (not sure of your driving ability/experience) other things need to be taken into account like oil starvation at high G cornering amongst other things.
There is heaps of information on here about setting up a 996 for track work with some very experienced members on here who track their cars.
I'd say if you're doing regular or semi regular track time you should get a proper bumper setup with the correct ducting, it really can't hurt to have a proper front cooling setup with the correct airflow.
It would depend on what your bumper is made from. If it's fiberglass/FRP it shouldn't be too difficult (if you've done any fiberglass work before) to mock up some extensions from the bumper to the stock A/C / Radiator ducts out of cardboard/foam core and then glass them in place to the bumper...If your bumper is Polyurethane, it's a whole different ballgame...
This is a source reference. Confirm exact model applicability in the original material.
