Planet-9

Motorsport AOS and IPD Plenum Problems

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2 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

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YOUR RESEARCHMotorsport AOS and IPD Plenum Problems

Leading reported evidence

Check hose and it appears

Performed · outcome unconfirmed

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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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've periodically checked the hose and it appears to maintaining its structure just fine.
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Motorsport AOS and IPD Plenum Problems

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Leading evidence: 'Check hose and it appears' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check hose and it appears' (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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1 matching discussions · 2 captured posts examined · 1 partial discussions

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Install 987 motorsport aos

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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 installed a 987 Motorsport AOS on Sunday and I'm having some issues.
Original post Read captured discussion
Motorsport AOS and IPD Plenum Problems

Use 1" id heater hose

Performed · outcome unconfirmed

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
I ended up use a 1" ID heater hose to connect the Motorsport AOS to the plenum.
Original post Read captured discussion
Motorsport AOS and IPD Plenum Problems

Frequently discussed actions (3)

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

Check hose and it appears

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
I've periodically checked the hose and it appears to maintaining its structure just fine.
Original post Read captured discussion
Motorsport AOS and IPD Plenum Problems

Install 987 motorsport aos

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
I installed a 987 Motorsport AOS on Sunday and I'm having some issues.
Original post Read captured discussion
Motorsport AOS and IPD Plenum Problems

Use 1" id heater hose

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
I ended up use a 1" ID heater hose to connect the Motorsport AOS to the plenum.
Original post Read captured discussion
Motorsport AOS and IPD Plenum Problems

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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.

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

Planet-9: 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: 20261027T064914Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Hey everyone, I installed a 987 Motorsport AOS on Sunday and I'm having some issues. Looking for feedback. Background: I purchased a the 987 Motorsport AOS kit from Suncoast and installed it on Sunday. With the larger IPD Plenum, I could not fit the Y hose ( 987 107 946 0) from the AOS to the plenum. I ended up use a 1" ID heater hose to connect the Motorsport AOS to the plenum. B efore the install, I could distinctly hear the variocam actuation kick in at 5200 RPM. After the installation I could no longer hear the variocam actuation. Tuesday, I noticed a sound very similar to a lifter tick (sounds exactly like this: https://www.youtube.com/watch?v=qLkoENrBmck ). I immediately suspected an issue with my AOS install and opened the engine compartment and noticed the heater hose had collapsed on itself due to the vacuum (the hose was still firmly connected with two hose clamps). I turned off the car, purchased a sturdier wire reinforced fuel line hose, and installed it. I've periodically checked the hose and it appears to maintaining its structure just fine. Initially after installing the new hose, the lifter tick has subsided. But it comes and goes. I had one drive yesterday where the lifter tick was completely gone at idle and through the whole rev range. I've had the car start up with the tick immediately both at idle and low (sub 2200 RPMs). The car is also blowing a moderate amount of white smoke at start up. The car rarely blew smoke at start up with the stock AOS. I broke the stock Y hose so I cannot install the stock AOS to determine if the lifter tick is a coincidence or not. I've already ordered a replacement stock Y hose to rule out coincidence. My current theories are: 1. The motorsport AOS was a defective unit. 2. The collapsed heater hose created too high a vacuum and damaged the motorsport AOS internals. 3. The motorsport AOS install is independent of the lifter tick. I think 3 is unlikely due to timing of the lifter tick as well as the white smoke at start up. I've also started the car and removed the oil cap. The cap was removed with a moderate of force and I observed, what I consider, a normal amount of vacuum. Based on my basic understanding of the PCV systems, I don't see how the AOS could affect variocam and the lifters. I'm taking the car to my local mechanic on Tuesday for more diagnostics. But I'm open to any feedback or advice. -Thanks for reading Credit The current install with the wire reinforced fuel line hose:

POST 2Original post

Any update on this? I want to change out the plastic lower line for a real hose.

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