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X51 Replacement Engine Dual Row or Single Row IMS?

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

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YOUR RESEARCHX51 Replacement Engine Dual Row or Single Row IMS?

Leading reported evidence

Install irrespective of current bearing

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Performed · outcome unconfirmed

Best bet is to have the IMS Solution installed irrespective of current bearing.

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X51 Replacement Engine Dual Row or Single Row IMS?
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Leading evidence: 'Install irrespective of current bearing' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install irrespective of current bearing' (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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Replace oil every 3k or six months

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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.

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Suggestion

Pull the seal and change your oil every 3K or six months.

Original post Read captured discussion
X51 Replacement Engine Dual Row or Single Row IMS?
Frequently discussed actions (2)

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

Install irrespective of current bearing

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

Best bet is to have the IMS Solution installed irrespective of current bearing.

Original post Read captured discussion
X51 Replacement Engine Dual Row or Single Row IMS?

Replace oil every 3k or six months

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

Pull the seal and change your oil every 3K or six months.

Original post Read captured discussion
X51 Replacement Engine Dual Row or Single Row IMS?
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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.

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

  • Rennlist: 1 discussions

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

POST 1 / ORIGINAL POSTEROriginal post

I have been looking around at a few different vehicles and saw one had a replacement X51 engine put in after IMS failure and was wondering if anyone knows if the replacement X51 engine would have been fitted with the dual row IMS or the single row. I read somewhere that this might depend on the date that the new X51 was produced. The engine replacement was done in 2009 if that helps. Would love some more info on this topic!

POST 2Original post

It most likely would be the larger 997 IMSB if that date is accurate. But, no way to know for sure until you can see it.

POST 3 / ORIGINAL POSTEROriginal post

Quotes source post: 17039467

Thanks for the info! Whats the difference between the larger 997 IMS and the dual row IMS?

POST 4Original post

Quotes source post: 17039616

Diameter and number of bearings. The later (larger) IMS bearing has bigger bearings, but only one load surface; the dual row had more and smaller bearings with two load surfaces to more evenly distribute the loads. Best bet is to have the IMS Solution installed irrespective of current bearing.

POST 5Original post

Quotes source post: 17039806

Can't if it has the large 997 bearing, unless you split the case...Best to pull the grease seal on those.

POST 6 / ORIGINAL POSTEROriginal post

hmm interesting, thanks so much for the info. So is the Dual row IMS considered better than the bigger 997 IMS? Or vise versa?

POST 7Original post

Quotes source post: 17040025

No, not at this time. The larger has a very low failure rate. Pull the seal and change your oil every 3K or six months.

POST 8Original post

Oh boy! Another IMSB thread.....these are so fun.....

POST 9Original post

Quotes source post: 17039616

Watch this series... You Tube Then, watch this series... You Tube

POST 10 / ORIGINAL POSTEROriginal post

Sweet will do thanks so much!

POST 11Original post

Quotes source post: 17039862

d'oh! Forgot about that on the later engines...yep, you have to split the case. Don't even THINK about that foolish milling out of the case without disassembly.

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