17 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHDyno with motec & 5 litre experience?
Leading reported evidence
Use heap more fuel
Performed · outcome unconfirmed
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0
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1
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Performed · outcome unconfirmed
I had the opposite with mine, running way too lean, it was much better after fixed but of course used a heap more fuel....
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Suggestion · Original poster
The cam belt covers have been removed to allow ease of inspection (I'm getting mixed advice about the wisdom of this...been running for about 10 yrs like this with no problems/debris).
Leading evidence: 'Use heap more fuel' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run about 10 yrs like this' (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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Suggestion · Original poster
The cam belt covers have been removed to allow ease of inspection (I'm getting mixed advice about the wisdom of this...been running for about 10 yrs like this with no problems/debris).
Run like this without issues...so still thinking about
Suggestion or failed attempt
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Suggestion · Original poster
And yes, the open belts is somewhat of a concern...but ten years of running like this without issues...so still thinking about that one.
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Suggestion · Original poster
After a few weeks of running around in our newly acquired 928 I'm pretty sure it's running quite rich.
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Suggestion
What year is yours and is it running standard injectors?
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Run about 10 yrs like this
No successful repair reported for this finding.
0
Reported fixes
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Unsuccessful attempts
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Read evidence and context
Discussions that contain suggestions
1
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Suggestion · Original poster
The cam belt covers have been removed to allow ease of inspection (I'm getting mixed advice about the wisdom of this...been running for about 10 yrs like this with no problems/debris).
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.
17 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Forum Australia: 1 discussions
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Generation: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
After a few weeks of running around in our newly acquired 928 I'm pretty sure it's running quite rich. So it might be nice to find a good dyno/tuning option but the engine's on a motec...which I assume means we need somewhere with the capacity to work with it (m48 system). Does anyone have any recommendations for workshops in the Sydney basin? I'm not really looking to squeeze every last hp out of it (more is always nice but it's hardly lacking)...it's more a case of not having it so 'fumey' or even just determining whether it is running rich or whether that's just how they are.... It was extensively dyno'd some years back but that was in the context of production cup campaigning so my usage is a little different.
I had the opposite with mine, running way too lean, it was much better after fixed but of course used a heap more fuel....
What year is yours and is it running standard injectors?
The chassis's a 78 but the block is a 5 litre m28/44 so quite a bit later. Given the amount of work done on the engine I'd doubt the standard injectors are still there...but I'm certainly no 928 expert so lets see what the boys at prtech have to say (or a dig through the receipt folders might turn something up).
I think we need to see some pics of your car Gavin, including the engine
I am assuming that your engine is "based" on the LH-Jetronic engine heads and intakes?
Now that makes me very curious.....
Looks like you only have one distributor, so the dual system has been done away with.....
It looks quite stock, even has a standard radiator. wonder why the cam belt covers are removed? Also looks to be minus an air filter?
checking out your FB page what light weight panels does it have, tailgate maybe?
Liking this, not many 928 racers in Aus
I think the radiator may be larger (it's got two quite large fans on the back that are manually controlled in the cabin. The cam belt covers have been removed to allow ease of inspection (I'm getting mixed advice about the wisdom of this...been running for about 10 yrs like this with no problems/debris). Could you post a pick of your engine bay for me - would be interesting to see a stock bay.
Radiator looks stock to me, even has the standard plastic end tanks, obviously this work though. I would be worried about something getting into that belt.... and with the mods to yours it would be an interference design now.....
Just checked - it's a Bergh 928 radiator...according to receipts. Happy to be corrected if this is not accurate
And yes, the open belts is somewhat of a concern...but ten years of running like this without issues...so still thinking about that one.
Maybe a Behr? If so that would be the factory original one. I have 3 standard radiators here and they look very similar to yours. Yours may have a thicker core, hard to tell in the pics.
