10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHIMS shaft not aligning to case bore 2000S - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Check ims and it is straight
Performed · outcome unconfirmed
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 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.
IMS shaft not aligning to case bore 2000S - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary
Leading evidence: 'Check ims and it is straight' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check ims and it is straight' (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 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
I installed the crank carrier but the intermediate shaft is not lining up with the case bore.
IMS shaft not aligning to case bore 2000S - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Install without tensioner arm and still doesn't make it
Performed · outcome unconfirmed
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 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
I even installed without tensioner arm and still doesn't make it.
IMS shaft not aligning to case bore 2000S - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace chain gears as well
Performed · outcome unconfirmed
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 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
When Porsche changed the chains, they also changed all the chain gears as well, so using either design requires ALL matching gears on the cams was well in order for everything to align.
IMS shaft not aligning to case bore 2000S - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace chains, they also
Performed · outcome unconfirmed
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 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
When Porsche changed the chains, they also changed all the chain gears as well, so using either design requires ALL matching gears on the cams was well in order for everything to align.
IMS shaft not aligning to case bore 2000S - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace chain gears as well
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
When Porsche changed the chains, they also changed all the chain gears as well, so using either design requires ALL matching gears on the cams was well in order for everything to align.
IMS shaft not aligning to case bore 2000S - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace chains, they also
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
When Porsche changed the chains, they also changed all the chain gears as well, so using either design requires ALL matching gears on the cams was well in order for everything to align.
IMS shaft not aligning to case bore 2000S - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Use either design requires all matching gears
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
When Porsche changed the chains, they also changed all the chain gears as well, so using either design requires ALL matching gears on the cams was well in order for everything to align.
IMS shaft not aligning to case bore 2000S - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Coverage and how to read this overview
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.
10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 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: 20261026T191851Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I'm in the process of rebuilding my 2000S motor. I installed the crank carrier but the intermediate shaft is not lining up with the case bore. It's like the timing chain is a link or 2 too short. I had to get a donor crankshaft, but sprocket is same size as original. I tried both new and original chain with same result. I even installed without tensioner arm and still doesn't make it. I checked IMS and it is straight. Crank carrier is fully seated on dowels.
Anyone have any ideas what's going on?
Sent from my SM-J700P using Tapatalk
Are all the components from the same engine? Reason I ask is that Porsche changed both the gears and chain design, and mixing them will cause this exact issue.
Crank came from a donor motor. Seized a rod bearing due to oil starvation on track. So my crank has am over heated rod journal. I was told it was fine but needed to be ground to make sure it was straight. I bought the donor crank since I couldn't find oversized bearings
Sent from my SM-J700P using Tapatalk
Thanks, I found this after I ordered the crank. Still thought the crank was a way less expensive option until now at least.
I am sure based of what JFP said I mixed the chain types. I guess I need to figure out where to go from here. If I get the IMS from the donor engine I assume I need to change the cam chains and sprockets out to? Not even sure how to specify what chains I need??? I didn't see a distinction between chains when I ordered all my rebuild parts.
Sent from my SM-J700P using Tapatalk
When Porsche changed the chains, they also changed all the chain gears as well, so using either design requires ALL matching gears on the cams was well in order for everything to align.
Read this and you will understand more:
https://www.pelicanparts.com/techarticles/Boxster_Tech/16-ENGINE-Camshaft_Swap_and_Chain_Tensioner/Gp1800.pdf
So I haven't had time to get back to my engine since I was on vaca the past week, but looking at the JFP link the 2 drive "sprockets" in the illustration look very different. One company had them listed as "sprocket style" and "paddle style" when I was purchasing the used crank. Will the updated style even fit a dual row chain on it?
Here are photos of the 2 cranks I have (sorry they are just photos I took documenting the teardown/rebuild):
original setup - dual chain sprocket on right side of crank
Here is the replacement crank - sprockets on left - look the same with 2 sprockets rather than the almost timing belt pulley look of the tooth type chain in the pelican link
image from Pelican link
This is a source reference. Confirm exact model applicability in the original material.
