>From: "Pooley, Trevor" <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
>Subject: RE: brakes
>Date: Thu, 24 May 2001 13:20:54 +0930
>
>Andrew,
>
>Caliper Bolt spacing, Yes the same for 200B, 240K (253mm disk) and 240K
>(270mm disk). (88.9mm rings a bell)
>
>Disk and caliper offsets were different on the 200B SX / 240K (253mm disk).
>
>240K (253mm disk)(early) and 240K (270mm disk)(later) calipers can be
>different. AFAIK Early have 2 piston simitomos (48mm diameter pistons) and
>late (270mm disk) I have seen only with single piston calipers at wreakers
>(51mm diameter pistons). Andrew Greenbury (Ozdat list) showed me some later
>struts with 2 piston calipers. So this may have been an option or possibly
>someone has done a conversion to 2 pots.
>
>The Caliper bolt holes on the later 240K struts are further away from the
>center of the stub axcels. This mean you can not run early 240 K (253mm
>disks) and 2 piston simitomos on a later strut. You can run the 2 piston
>simitomos on the later strut with the 270mm disk.
>
>AFAIK hilux and volvo four pots have pistons which are only 30mm diameter.
>So from my sums SQ cm total piston area for four pots is 28.27. For the
>simitomos 36.19. So I believe the simitomos have 28% more clamping
>potential
>than the hilux/volvo combos.
>
>I run 240K Later struts with new RDA disks (270mm), simitomo calipers and
>bendix ultimate pads for sprints.
>
>Regards
>Trev
>
Trevor,
Would'nt the larger surface area of the Hilux/volvo/200B/Commodore pad have
a effect on clamping force? If not clamping force,what about heat
dispertion? If there so efficient, why don't more people use them instead of
the typical Magna/Commodore, 200B, or Hilux/Volvo/Nissan 4-spot conversions?
Just a thought.....
Damien
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