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Master cylinder bore.

Thgil

Thgil

Tuned and Synch'ed
GT Famiglia
Joined
Oct 27, 2008
Messages
60
Location
UK
Hi.
On my griso 1100,
I want to update/change my clutch and front brake master on cylinders more like the V11 set up with separate resivoirs rather than integrated ones.
But I need to know the bore sizes of both .
Any help on this would be greatly appreciated.
 
Thgil said:
Hi.
On my griso 1100,
I want to update/change my clutch and front brake master on cylinders more like the V11 set up with separate resivoirs rather than integrated ones.
But I need to know the bore sizes of both .
Any help on this would be greatly appreciated.
Click to expand...
Did you ever get an answer?
 
Hi Todd - sadly they are usually but not always marked on the bottom - this particular clutch pump (casting marks as Brembo inside and out) only has the letters "3X" engraved in the bottom.
It looks like the OEM part that came on this 2008 (2007 manufacture) Griso.

By sight it looks like a 12mm PSC12 and that would agree with what OPP racing have posted . In which case a 13mm would make the clutch about 17% heavier (although better mechanical leverage my cancel that out)
 
Jon Green said:
Hi Todd - sadly they are usually but not always marked on the bottom - this particular clutch pump (casting marks as Brembo inside and out) only has the letters "3X" engraved in the bottom.
It looks like the OEM part that came on this 2008 (2007 manufacture) Griso. By sight it looks like a 12mm PSC12 and that would agree with what OPP racing have posted . In which case a 13mm would make the clutch about 17% heavier (although better mechanical leverage my cancel that out)
Click to expand...
So I'm confused. Was your post to make me wrong, or to link people to another site for purchase?
Hyperlinks to competing products and sites are not welcome here. Please read both paragraphs in red above.

Folks I think I'm done on the site everywhere but the paid 'Ask the Wrench' section for tech questions.
 
GTM® said:
So I'm confused. Was your post to make me wrong, or to link people to another site for purchase?
Hyperlinks to competing products and sites are not welcome here. Please read both paragraphs in red above.

Folks I think I'm done on the site everywhere but the paid 'Ask the Wrench' section for tech questions.
Click to expand...
Sorry if i offended you - I was definitely not trying to "make you wrong" or "link people to another site for purchases"

I am not looking for any upgrade

I am just trying to find what master-cylinder or "clutch pump" I actuallyhave fitted
 
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