12-07-2013, 12:06 PM
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#1
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Registered User
Join Date: Nov 2004
Location: New Jersey
Posts: 8,709
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underdrive pulley: best option
I'm putting my replica boat anchors on for winter also known as winter wheels on winter tires that run four months a year. I'm thinking a wee bit more oomph can help move the dead weight in the rear.
Which UD pulley should I get? Granted not a very complex piece. ..
Maybe group buy? These are said to be the best bang for the extra HP buck.
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GT3 Recaro Seats - Boxster Red
GT3 Aero / Carrera 18" 5 spoke / Potenza RE-11
Fabspeed Headers & Noise Maker
BORN: March 2000 - FINLAND
IMS#1 REPLACED: April 2010 - NEW JERSEY -- LNE DUAL ROW
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12-07-2013, 12:51 PM
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#2
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Registered User
Join Date: Apr 2011
Location: Alabama
Posts: 487
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Was contemplating one also.
Does anyone know if the revised version of the BBI pulley corrected the problem that allowed some of the early units to shear off at the spokes? Or is this still an issue?
Thanks to anyone with knowledge.
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12-07-2013, 01:10 PM
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#3
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Registered User
Join Date: Nov 2009
Location: mass
Posts: 731
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I went with the RSS version and a new belt . It has been on my S for over 1 year now with no problems . getting one for my 996 also . just remember you have to make a little cut to the engine to fit it . no big deal .
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12-07-2013, 01:26 PM
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#4
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Yellow986S
Join Date: Apr 2013
Location: Bay Area
Posts: 191
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I would be interested in a group buy for the RSS underdrive pulley.
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12-07-2013, 04:38 PM
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#5
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Engine Surgeon
Join Date: Aug 2008
Location: Cleveland GA USA
Posts: 2,425
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Don't buy the one thats designed for fashion.
__________________
Jake Raby/www.flat6innovations.com
IMS Solution/ Faultless Tool Inventor
US Patent 8,992,089 &
US Patent 9,416,697
Developer of The IMS Retrofit Procedure- M96/ M97 Specialist
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12-07-2013, 04:55 PM
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#6
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Registered User
Join Date: Jul 2013
Location: Montreal QC Canada
Posts: 222
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Remember me the different disadvantage of the UDP ?
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2003 Boxster S
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12-07-2013, 05:22 PM
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#7
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Registered User
Join Date: Apr 2013
Location: Duncan, BC
Posts: 94
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Quote:
Originally Posted by The French Dude
Remember me the different disadvantage of the UDP ?
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Translation: remind me of the disadvantages of the UDP
(Go Habs Go)
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03 boxster
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12-07-2013, 05:25 PM
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#8
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Registered User
Join Date: Dec 2006
Location: shoreham, ny
Posts: 1,619
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I've had the rss for over 3 years. It's a fine product.
__________________
996 3.4 engine with 2.7 986 5speed transmission
Ebay Headers, Fabspeed high flow cats, JIC Cross, IPD Plenum, H&R Coilovers, B&M Short Shifter, AEM Uego Gauge Type Analog, Apexi S-AFC Select, 987 air box, Litronics, 2000 Tails and side markers, painted center console, 18" 987 S-Wheels, GT3 Front bumper with splitter.
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12-08-2013, 04:26 PM
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#9
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Registered User
Join Date: Jul 2013
Location: Montreal QC Canada
Posts: 222
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Quote:
Originally Posted by Rickinduncan
Translation: remind me of the disadvantages of the UDP
(Go Habs Go)
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Thank you
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2003 Boxster S
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12-08-2013, 09:20 AM
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#10
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Registered User
Join Date: Apr 2011
Location: DFW
Posts: 713
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Quote:
Originally Posted by Jake Raby
Don't buy the one thats designed for fashion.
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Great advice JR. I've seen the pic.
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12-09-2013, 09:03 AM
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#11
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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Quote:
Originally Posted by Jake Raby
Don't buy the one thats designed for fashion.
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For those of you who missed class that day, Jake is talking about the UDP in this thread that failed:
Underdrive pulley recommendation
I also recommend the RSS UDP. There is a link to buy the pulley and belt in the above thread.
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
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12-08-2013, 06:52 PM
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#12
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I am my own mechanic....
Join Date: Feb 2013
Location: Salt Lake City, UT
Posts: 3,432
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Great mod. Love mine.
__________________
'04 Boxster S 50 Jahre 550 Spyder Anniversary Special Edition, 851 of 1953, 6-sp, IMS/RMS, GT Metallic silver, cocoa brown leather SOLD to member Broken Linkage.
'08 VW Touareg T-3 wife's car
'13 F150 Super Crew long bed 4x4 w/ Ego Boost
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12-09-2013, 09:30 AM
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#13
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Registered User
Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,243
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RSS UDP on mine. Best mod for that feeling of more torque and HP around.
I say "feeling" because I've not dyno'd the car to see if it's actually more powerful, but it sure does feel stronger pulling off the line than before.
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12-09-2013, 07:32 PM
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#14
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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It seems that a lot Boxster owners do the UDP mod and all seems happy with no down sides. Issues I've seen on other cars is that charging becomes a problem and when things get hot (I'm in Phoenix) the cooling and A/C system struggle unless rpms are consistently up. I ask my indie about this mod and he indicated that he would recommend this mod for race cars only. Any thoughts from those that have done this mod.
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03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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12-10-2013, 12:31 PM
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#15
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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Quote:
Originally Posted by Porsche9
It seems that a lot Boxster owners do the UDP mod and all seems happy with no down sides. Issues I've seen on other cars is that charging becomes a problem and when things get hot (I'm in Phoenix) the cooling and A/C system struggle unless rpms are consistently up. I ask my indie about this mod and he indicated that he would recommend this mod for race cars only. Any thoughts from those that have done this mod.
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I was also worried about cooling, charging, and steering. See this thread below.
http://986forum.com/forums/general-discussions/37563-underdrive-pulley-questions.html#post307968
In my experience on my Boxster street car (before it was converted to a race car), the cooling system worked exactly the same in all conditions including 110F days in the desert. The charging system worked fine and there was no change in power steering feel. This is one of the very few street upgrades that do not seem to have a downside or tradeoff.
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
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