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Under-drive pulley

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

Discussion summary

YOUR RESEARCHUnder-drive pulley

Leading reported evidence

Recommend .5 inch shorter belt

Suggestion or failed attempt

No successful repair reported for this finding.

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Suggestion

I see 3.5-4HP consistently from ours on our engines and during developmental testing, but I do recommend .5 inch shorter belt when using this and you will see a slight reduction in battery level especially when using the A/C, etc..

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Under-drive pulley
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Leading evidence: 'Recommend .5 inch shorter belt' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend .5 inch shorter belt' (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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Use a/c, etc

Suggestion or failed attempt

No successful repair reported for this finding.

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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 see 3.5-4HP consistently from ours on our engines and during developmental testing, but I do recommend .5 inch shorter belt when using this and you will see a slight reduction in battery level especially when using the A/C, etc..

Original post Read captured discussion
Under-drive pulley
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.

Recommend .5 inch shorter belt

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 see 3.5-4HP consistently from ours on our engines and during developmental testing, but I do recommend .5 inch shorter belt when using this and you will see a slight reduction in battery level especially when using the A/C, etc..

Original post Read captured discussion
Under-drive pulley

Use a/c, etc

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 see 3.5-4HP consistently from ours on our engines and during developmental testing, but I do recommend .5 inch shorter belt when using this and you will see a slight reduction in battery level especially when using the A/C, etc..

Original post Read captured discussion
Under-drive pulley
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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.

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

  • Rennlist: 1 discussions

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Generation: 20261026T161109Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

has anyone tried this product as a "mod" from Tarett Engineering? It replaces the standard power steering pulley and the manufacturer describes it as follows: Designed to slow down the power steering pump to prevent it from overheating in racing conditions, this pulley will quickly pay for itself by not just saving your pump, but also your weekend at the track. The pulley is fully balanced and is a 16% reduction. An added benefit is increased power and torque across the entire RPM range. Pete

POST 2Original post

Quotes source post: 6383525

Pete, This is typically a track mod for Boxsters, Caymans, and 996s to keep the power steering fluid from overheating. http://www.mantissport.ca/tabid/55/P...3/Default.aspx - $190 (CND) [pulley only] and http://www.tarett.com/items/996-997-...udp-detail.htm $240 US [includes pulley, bolt and tensioning tool] Possibly increased HP and TQ - likely minimal gains, but present. Will likely require power tools to modify engine to fit. I think you have to saw of an engine tab. -td

POST 3Original post

We also offer one of these, and it does help lessen power steering temperatures. I see 3.5-4HP consistently from ours on our engines and during developmental testing, but I do recommend .5 inch shorter belt when using this and you will see a slight reduction in battery level especially when using the A/C, etc.. If you are worried about the PS pump, we also have some fixes for the overheating issues including a fully updated pump with coated internals, altered clearances and a couple of other tricks.

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