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Should I weld the IMS shaft? Need advice

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

Discussion summary

YOUR RESEARCHShould I weld the IMS shaft? Need advice

Leading reported evidence

Install with the ims solution and plug

Performed · outcome unconfirmed

No successful repair reported for this finding.

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Reported fixes
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Unsuccessful attempts
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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.

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

In fact, most intermediate shafts (with exception of one fitted with the IMS Solution and plug for the tube), fill up with oil, so balancing it wouldn't help much.

Original post Read captured discussion
Should I weld the IMS shaft? Need advice
Frequently discussed work

Inspect ims

No successful repair reported for this finding.

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Reported fixes
0
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

We pin the main IMS sprocket after inspecting the IMS for runout and taper.

Original post Read captured discussion
Should I weld the IMS shaft? Need advice
Read full discussion summary

Leading evidence: 'Install with the ims solution and plug' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'decade and we've never had any issue' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Inspect ims' (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.

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1 matching discussions · 4 captured posts examined · 0 partial discussions

Compare 4 other evidence results

decade and we've never had any issue

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
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 suspect a cause
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.

Suspected cause

We've been pinning IMS shafts for probably a decade and we've never had any issue with balance.

Original post Read captured discussion
Should I weld the IMS shaft? Need advice

Inspect ims

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

We pin the main IMS sprocket after inspecting the IMS for runout and taper.

Original post Read captured discussion
Should I weld the IMS shaft? Need advice

Set screw

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 also seen some people using a set screw, but there seem to be mixed views on this one.

Original post Read captured discussion
Should I weld the IMS shaft? Need advice

Use ln engineering ims solution bearing

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 intend to use the LN Engineering IMS Solution bearing.

Original post Read captured discussion
Should I weld the IMS shaft? Need advice
Frequently discussed actions (5)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Inspect ims

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

We pin the main IMS sprocket after inspecting the IMS for runout and taper.

Original post Read captured discussion
Should I weld the IMS shaft? Need advice

Install with the ims solution and plug

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

In fact, most intermediate shafts (with exception of one fitted with the IMS Solution and plug for the tube), fill up with oil, so balancing it wouldn't help much.

Original post Read captured discussion
Should I weld the IMS shaft? Need advice

Set screw

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 also seen some people using a set screw, but there seem to be mixed views on this one.

Original post Read captured discussion
Should I weld the IMS shaft? Need advice

Use ln engineering ims solution bearing

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

I intend to use the LN Engineering IMS Solution bearing.

Original post Read captured discussion
Should I weld the IMS shaft? Need advice

Use with anything other than an ims solution

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

Any shat with more than .005" of runout is disqualified for use with anything other than an IMS Solution.

Original post Read captured discussion
Should I weld the IMS shaft? Need advice
Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

decade and we've never had any issue

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
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.

Suspected cause

We've been pinning IMS shafts for probably a decade and we've never had any issue with balance.

Original post Read captured discussion
Should I weld the IMS shaft? Need advice
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.

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

  • Pelican Parts: 1 discussions

0 evidence records excluded for query context · 1 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T075545Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi guys, I'm just in the process of putting back together a 99 M96 engine post IMS bearing failure. I got the engine ultrasonic cleaned and purchased a replacement IMS shaft. The old shaft looks to be in good shape, but I've read reusing the shaft after the bearing failure is a bad idea. Now, should I have the replacement IMS shaft welded? I can't find much info on this online. How is this done properly? Does the shaft need to be balanced after? Can I just do this at any good welding shop (I'm in the Bay Area). I've also seen some people using a set screw, but there seem to be mixed views on this one.

POST 2Original post

Chain drive gears should be tig welded in place

POST 3Original post

Hi The web link below has Flat 6 Innovations stating that they "weld and/ or pin every sprocket and drive. Overkill does not exist when I assemble one." https://rennlist.com/forums/996-forum/928373-has-anyone-had-their-ims-gears-welded.html My M96 IMS shaft has the larger sprocket pinned 9 and 3 weld points on the two smaller sprockets. Each weld length is pretty much equal and spaced roughly equally around the sprocket circumferences What is not clear is whether or not the shaft would need to be balanced after the tig welds are applied. I intend to use the LN Engineering IMS Solution bearing. Not sure if that would make a difference as to whether the shaft should be balanced after welding or not ? Your expert advice would be very much appreciated. Thanks

POST 4Original post

Quotes source post: 10445286

We pin the main IMS sprocket after inspecting the IMS for runout and taper. Any shat with more than .005" of runout is disqualified for use with anything other than an IMS Solution. We've been pinning IMS shafts for probably a decade and we've never had any issue with balance. In fact, most intermediate shafts (with exception of one fitted with the IMS Solution and plug for the tube), fill up with oil, so balancing it wouldn't help much.

This is a source reference. Confirm exact model applicability in the original material.