Which under drive pulley to buy/use?

[Lobo1186]

I have the Precision chassis works UDP for about three years now on a daily driver, only issue is a slight skip in audio sometimes at low RPM.

[Porsche9]

Originally Posted by Lobo1186

I have the Precision chassis works UDP for about three years now on a daily driver, only issue is a slight skip in audio sometimes at low RPM.

I actually have this same issue. It's happens more frequently when the headlights are on. Otherwise no problems including one 99 degree day last Friday. A/C had no problems cooling the cabin quickly and the coolant temp stayed right on the number 8.

[kcpaz]

I have more of those pulleys available. They are being anodized black now and come with a new OEM bolt. I have 10 more left.

[kcpaz]

Porsche Boxster Cayman 996 997 Underdrive Pulley | eBay

[seningen]

Went with this one off of ebay.

Porsche 986 996 997 4" Under Drive Pulley with AC TRS Motorsports New | eBay

Based on comments from the forum I went with a solid one, I also liked that it had
the same groove pattern and was a complete kit.



If I have any issues -- I'll post, but so far so good.

Thank you for everyones guidance.

Mike

[seningen]

4.5 months in -- so far so good -- no real issues except my water temp will climb a little if I am idling and I do NOT have the AC on.

I think the AC kicks up idle a couple hundred RPM and this is sufficient to spin the H2O pump enough to keep up with cooling needs.

Mike

Originally Posted by seningen

Went with this one off of ebay.

Porsche 986 996 997 4" Under Drive Pulley with AC TRS Motorsports New | eBay

Based on comments from the forum I went with a solid one, I also liked that it had
the same groove pattern and was a complete kit.



If I have any issues -- I'll post, but so far so good.

Thank you for everyones guidance.

Mike