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YOUR RESEARCHSetting Timing on 2001 996
Leading reported evidence
Check camshaft timing -- twice -- very carefully
Performed · outcome unconfirmed
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Performed · outcome unconfirmed
All I can tell you is when I rebuilt an engine and reassembled it I left nothing to chance and checked the camshaft timing -- twice -- very carefully to ensure it was correct.
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 am not feeling confident about the chain tensioner in bank 4-6 so i am going to replace it (might as well while the engine is out of the car)....and then check/set the timing again on both sides...
Leading evidence: 'Check camshaft timing -- twice -- very carefully' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check /' (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.
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Performed · outcome unconfirmed · Original poster
I rotated the engine 7 times and checked the timing again.
While it is possible that upon reassembly you managed to get the timing just right -- at least to you it appears that way -- you should still double check the timing to ensure it is correct, for both cylinders and all 4 cams.
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 performed work without a confirmed outcome
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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.
Performed · outcome unconfirmed
I filled the thing not with grease -- I had a different gun filled with grease for those fittings that required grease -- but with the proper machine oil.
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 performed work without a confirmed outcome
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
I filled the thing not with grease -- I had a different gun filled with grease for those fittings that required grease -- but with the proper machine oil.
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 performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster
It was beautifully documented...anyway, that gentleman kept the plugs off for several cranks and then installed the plugs and coils and fired it up on the first try.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check /
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 am not feeling confident about the chain tensioner in bank 4-6 so i am going to replace it (might as well while the engine is out of the car)....and then check/set the timing again on both sides...
Discussions that performed work without a confirmed outcome
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.
Performed · outcome unconfirmed
All I can tell you is when I rebuilt an engine and reassembled it I left nothing to chance and checked the camshaft timing -- twice -- very carefully to ensure it was correct.
While it is possible that upon reassembly you managed to get the timing just right -- at least to you it appears that way -- you should still double check the timing to ensure it is correct, for both cylinders and all 4 cams.
Discussions that performed work without a confirmed outcome
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.
Performed · outcome unconfirmed
I filled the thing not with grease -- I had a different gun filled with grease for those fittings that required grease -- but with the proper machine oil.
Discussions that performed work without a confirmed outcome
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.
Performed · outcome unconfirmed
I filled the thing not with grease -- I had a different gun filled with grease for those fittings that required grease -- but with the proper machine oil.
Discussions that performed work without a confirmed outcome
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.
Performed · outcome unconfirmed · Original poster
It was beautifully documented...anyway, that gentleman kept the plugs off for several cranks and then installed the plugs and coils and fired it up on the first try.
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 am not feeling confident about the chain tensioner in bank 4-6 so i am going to replace it (might as well while the engine is out of the car)....and then check/set the timing again on both sides...
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.
16 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: 20261026T181445Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Question for the folks that know (Macster, Jake...) Is it common to have bank 1-3 timing allocation be correct after a total rebuild of the engine? My Bank 1-3 was dead on and didn't require any adjustment at all (first pic), and my 4-6 was only slightly off (2nd pic).
Sorry, I'd like to help but I'm no expert at this timing business.
All I can tell you is when I rebuilt an engine and reassembled it I left nothing to chance and checked the camshaft timing -- twice -- very carefully to ensure it was correct.
While it is possible that upon reassembly you managed to get the timing just right -- at least to you it appears that way -- you should still double check the timing to ensure it is correct, for both cylinders and all 4 cams.
That pic isn't slightly off.. Its a mile off.
Rotate the engine CW 7 times and re- check. Also, ensure the chain tensioners are pumped up when doing this.
Thank you for the advice. I will rotate 7 times and try again. Also, i had the chain tensioners pumped but had to relieve some of the pressure because i couldn't screw them in (as they were too tight). Is that okay???
I got them torqued to 59 ft lbs with no issues....what i mean to say is that when i pumped them in oil they got very stiff. So much so that i couldnt screw them in without draining off just a little bit of the oil so that the pin would go back a bit and let the thread on the screw reach the threading on the case.
jshalmo,
I am at the same rebuild stage as you. The issue that concerns me is how to carefully prime the entire oil circulation system before it runs.
In theory ,a dozen short bursts on the starter motor with the fuel relay/fuse removed should do it ? But this is an M96 - there must be some obscure 'gotcha' issue?
From what I've seen at the track that is what the racers do...run the starter, get about 10 full crank turns out of it, then hit the ignition switch and fire it up. I've also done that on a couple of engine rebuilds myself. Seems nerve wracking to just let the starter run and turn the engine over and over, but it works to get the oil primed and moving, particularly to the camshafts and lifters.
Hi Schnell...i was reading a really great thread a few months ago about another rennlister who did a complete rebuild. It was beautifully documented...anyway, that gentleman kept the plugs off for several cranks and then installed the plugs and coils and fired it up on the first try. He attached a video at the end of the post...
Jake, thanks for the tip. I rotated the engine 7 times and checked the timing again. Both banks were still perfect... i am not feeling confident about the chain tensioner in bank 4-6 so i am going to replace it (might as well while the engine is out of the car)....and then check/set the timing again on both sides...
In engines that allowed it I used a 1/2" drill motor to spin the oil pump with an extension to prime the oil system. This pumps oil throughout the engine's oiling system *without spinning the engine*.
The oil flows into and around and out each bearing interface.
In the case of the Porsche engine you can't spin the oil pump.
Thus my suggestion would be to explore rigging up a pump fed from a bucket of fresh oil that would feed oil to the engine through the hole the oil pressure switch screwed into. The pump could be driven/spun by an electric drill motor.
Another way would be to get one of those oil/grease guns used for greasing/lubing grease and oil fittings on heavy equipment and machine tools.
I used one in the shop where I worked to lube heavy/large machine tools. I filled the thing not with grease -- I had a different gun filled with grease for those fittings that required grease -- but with the proper machine oil. I would pump the handle until I spotted oil oozing out from between the machine ways.
Spinning the engine with the starter motor with the fuel pump fuse removed would be the last way I would try to lube an engine before starting. Who wants to spin the engine on possibly under lubricated bearings in order to generate oil flow and pressure using the engine's oil pump? Not me, that's for sure.
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