Underdrive pulley recommendation - 986 Forum - The Community for Porsche Boxster & Cayman Owners

thstone · 05-06-2013, 05:08 PM

I installed the RSS UDP. Worked great. You can also buy the smaller/correct size serpentine belt at the same time.

RSS Under Drive Pulley for Porsche Boxster, Cayman, Carrera, Targa

Homeboy981 · 05-07-2013, 06:51 AM

Quote:

Originally Posted by thstone

I installed the RSS UDP. Worked great. You can also buy the smaller/correct size serpentine belt at the same time.

RSS Under Drive Pulley for Porsche Boxster, Cayman, Carrera, Targa

Had to go with RSS because of it was too important to fail.

ccstud17 · 05-08-2013, 10:17 PM

stupid question maybe, but how are UD pulleys not universal? I can see cam diameter varying in sizes, but there should be a lot of UDPs that fit the box, that does not make you pay the premium...

stephen wilson · 05-09-2013, 04:50 AM

Quote:

Originally Posted by ccstud17

stupid question maybe, but how are UD pulleys not universal? I can see cam diameter varying in sizes, but there should be a lot of UDPs that fit the box, that does not make you pay the premium...

There are more variables than it may seem, besides diameter; bolt size, number of bolts, bolt circle diameter, pulley offset, center hole size, keyway/pin size & location, V-groove width/depth (this may be fairly standard?), etc.

EssexPorsche · 05-09-2013, 05:01 AM

Good monring gentlemen

Being that we are all having a nice friendly chat about UDP's - how easy is it to change/install.
Not looking for a full blow by blow account but can a fairly unskilled person do it or does it require a higher level of knowledge and does half of the interior need to be removed or can access be gained with seats and console in place.

EssexPorsche · 05-09-2013, 07:55 AM

don't worry chaps.
Done some searching and have my answers, just need to find the cash!

Kenny Boxster · 10-23-2013, 08:30 PM

Quote:

Originally Posted by EssexPorsche

Good monring gentlemen

Being that we are all having a nice friendly chat about UDP's - how easy is it to change/install.
Not looking for a full blow by blow account but can a fairly unskilled person do it or does it require a higher level of knowledge and does half of the interior need to be removed or can access be gained with seats and console in place.

Hello Essex,

The install is fairly straightforward and wasn't too difficult. I did mine with seats and console in place, just move them forward and you do it with the top down.