JohnH Posted April 2, 2008 Share Posted April 2, 2008 Can anyone here confirm the Porterfield pad part # as AP 137 for the SW12 caliper & 300ZX vented rotors conversion. Thanks. Quote Link to comment Share on other sites More sharing options...
280Z Turbo Posted April 2, 2008 Share Posted April 2, 2008 AP137 is for the S12+8 (vented or non) caliper. Quote Link to comment Share on other sites More sharing options...
JohnH Posted April 4, 2008 Author Share Posted April 4, 2008 This was my email to Porterfield. "I have a Datsun 240Z that has a front brake caliper conversion on it using the large SW12 four piston Toyota calipers found on the mid 80's Toyota trucks & the 84 - 85 300ZX vented rotors. I would like to equip them with Porterfield R4-S pads. Your catalog shows only 95 - present Toyota trucks. Do you know if Toyota used that caliper in recent truck models & what is the part # so I can order the R4-S pads for it. The pads used are the same size & pin spacing as the 84 - 85 Nissan 300ZX pads but without the bottom mid tab & bottom side recesses if that helps." This was my response back. "That is part number AP 137 R4-S $79.95" Quote Link to comment Share on other sites More sharing options...
jgkurz Posted April 4, 2008 Share Posted April 4, 2008 Can anyone here confirm the Porterfield pad part # as AP 137 for the SW12 caliper & 300ZX vented rotors conversion. Thanks. I run Toyota S12W calipers, aluminum spacers, 300ZX Z31 vented rotors and Porterfield R4S pads. The pad part number I run is AP 410. They are a perfect fit. Hope that helps.... Quote Link to comment Share on other sites More sharing options...
yellowoctupus Posted May 6, 2012 Share Posted May 6, 2012 Post GRAVEDIGGER!! What is the skinny on the aluminum spacers you mention here?? I'm doing the Toyota swap, the calipers bolt right on, but the offset of the rotors is about 3/8" ?? Are you using the spacer to get the rotor centered in the caliper? Thanks! Quote Link to comment Share on other sites More sharing options...
yellowoctupus Posted May 6, 2012 Share Posted May 6, 2012 (edited) And.....I just found my answer... good thing I dug up this 4+ year post. Grr.. The VENTED 4 piston caliper: This is the same as above, but uses an '84 300ZX vented rotor and a different caliper from a 89-95 4wd pickup or 4/89-91 4 Runner. This caliper is an S12W and is stamped as such. These parts do not just bolt on unfortunately. A spacer is needed between the rotor and the hub to line the rotor up with the caliper correctly. This spacer is available from www.modern-motorsports.com and is a different thickness for 240 and 280 hubs (260s as usual have 240 hubs in the early part of the year and 280 hubs in the latter part). This is a substantial upgrade from the solid rotor 4 piston caliper upgrade because the vented rotor can shed a lot more heat than the solid rotor. Fits most 14" rims. On the FAQ sticky. --> Brakes Edited May 6, 2012 by yellowoctupus Quote Link to comment Share on other sites More sharing options...
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