[tone]

Now you have me confused you said that I wasn't quite right in your reply yet now you state that a smaller diameter piston does not move the same fluid as a larger piston using the same stroke. if you read my post I said that the smaller diameter piston increases the stroke needed compared to a larger diameter piston to push the pads out the same distance.
Tmod

The confusion arises because you missed out the work NEEDED in your original reply

[HemiKat]

Okay, so I need a post master cylinder... I get that, but then why do all you post guys use Gsxr master cylinders?

[loudnlow7484]

Word is that the radial master cylinders give a better feel..... I've never tried one, so I couldn't tell you.

[Tmod]

I had a GSXR M/C and went back to the stock post 14mm.

Tmod

[mreedohio]

so does this mean i should switch to a post m/c on my pre kat with the busa front end?

[Tmod]

so does this mean i should switch to a post m/c on my pre kat with the busa front end?

If you like the brakes the way they are don't change anything. I have no idea what calipers or m/c you have.

Tmod

[Tmod]

Well the bolt spacing on the Nissan caliper did not match the Katana fork. At least it was only $5.00 I spent.

What is the bolt spacing on that caliper?

Tmod

[mreedohio]

If you like the brakes the way they are don't change anything. I have no idea what calipers or m/c you have.

Tmod

im running busa stock calipers and busa m/c on my busa front end setup on my pre kat,the busa m/c shown in the pic a few posts back is mine

[Tmod]

im running busa stock calipers and busa m/c on my busa front end setup on my pre kat,the busa m/c shown in the pic a few posts back is mine

If you went with the post m/c you would not have to pull on the lever with as much effort as your current setup, I am sure your current setup is fine but if you want more braking power you might consider that change.

Tmod

[scottynoface]

Word is that the radial master cylinders give a better feel..... I've never tried one, so I couldn't tell you.

They started putting those on the 636 in 2005. I couldn't really tell any difference from the limited time I spent on one.

[tone]

What is the bolt spacing on that caliper?

Tmod

Should be 90mm centres

[loudnlow7484]

Should be 90mm centres

Just what exactly are "centres"?

Strikes me the 90mm spaced calipers are pretty common. The 4-pots I have from an 89 GSXR750 are 90mm, I believe. I've got a set of Brembo's too that I'd like to fit up, but I'm pretty sure they're something like 65mm on center.

[tone]

[squiggy]

What is the bolt spacing on that caliper?

Tmod

From eyeballing the digital caliper on center, it is 62mm.

[loudnlow7484]

From eyeballing the digital caliper on center, it is 62mm.

Any idea what it came off of?