kslb Posted March 27, 2008 Share Posted March 27, 2008 Could anyone let me know the part number for J-Spec brake Calipers? Is there more than one sort of J-Spec Caliper? Thanks Keith Link to comment Share on other sites More sharing options...
merckx Posted March 27, 2008 Share Posted March 27, 2008 Surely you aren't going to buy a new one, they're very cheap and readily available secondhand with quite a few owners fitting the larger ones. Link to comment Share on other sites More sharing options...
Homer Posted March 27, 2008 Share Posted March 27, 2008 It seems there might be a difference, in EPC it lists the following, but only "up to chassis 0035274" 47750-14250 - CYLINDER ASSY, DISC BRAKE, REAR LH 47730-14240 - CYLINDER ASSY, DISC BRAKE, REAR RH If anyone can supply a chssis and frame number for a model later than 0035274 I can check it on EPC Link to comment Share on other sites More sharing options...
kslb Posted March 28, 2008 Author Share Posted March 28, 2008 Surely you aren't going to buy a new one, they're very cheap and readily available secondhand with quite a few owners fitting the larger ones. No am not buying new and I already have replacements but they are larger 2pots than the early J-Spec and I wanted to get the part numbers for them both so I could find out what the differences are. It seems there might be a difference, in EPC it lists the following, but only "up to chassis 0035274" 47750-14250 - CYLINDER ASSY, DISC BRAKE, REAR LH 47730-14240 - CYLINDER ASSY, DISC BRAKE, REAR RH If anyone can supply a chssis and frame number for a model later than 0035274 I can check it on EPC Thanks Homer you don't know the part numbers for the fronts do you? Link to comment Share on other sites More sharing options...
Homer Posted March 28, 2008 Share Posted March 28, 2008 For some reason I thought you only needed rears - doh! See the attachement for the numbers, I can't make out which ones are correct... Looks like theu changed them in '04 Link to comment Share on other sites More sharing options...
colsoop Posted March 28, 2008 Share Posted March 28, 2008 I seem to remember them being made of different materials and being a one piece design after a certain period of time. See this thread(post 11 onwards) http://www.mkivsupra.net/vbb/showthread.php?t=64963&highlight=brake Link to comment Share on other sites More sharing options...
kslb Posted March 28, 2008 Author Share Posted March 28, 2008 I take it the change in material had something to do with the old ones constantly cracking the housing around the bleed nipple. Thanks guys, it is just confusing me that the late J-Spec calipers I have fitted on the front do not allow the stock 16" rims to fit. I really wanted this one to remain stock looking and now cannot put the wheels on. Did they change the wheel size on the later models as well, i take it they must have to allow the new caliper design it's just not something i was aware of and they look identical in size. Link to comment Share on other sites More sharing options...
kslb Posted April 3, 2008 Author Share Posted April 3, 2008 I seem to remember them being made of different materials and being a one piece design after a certain period of time. See this thread(post 11 onwards) http://www.mkivsupra.net/vbb/showthread.php?t=64963&highlight=brake Yep the replacement ones are cast iron not alluminium and are slightly larger and do not allow the stock 16" rims. They are not a one piece design though still the same join. Learn something new every day. Thanks Keith Link to comment Share on other sites More sharing options...
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