I'm building an MK indy with a ZX10R bike lump, its time to choose some brakes. I have my eye on the willwood kits, two of which look ideal but I need some help choosing.
The 1st option is a direct replacement for the seirra set up, using there 'midilite' caliper, with 286mm vented discs.
The 2nd option is much lighter and cheaper, uses there 'powerlite' caliper with 256mm solid discs.
I want the best braking power possible but also I dont want to get riducusly big brakes that will do nothing more than increase the unsprung weight!
What set up do most Indy builders go with?

And finaly, I have a rear drum set up,(which has been carefully removed :-) ) MK have supplied me with a bracket for rear discs, does anyone know if the bracket allows you to simply bolt on some standard seirra rear calipers + discs?
Thanks

option 2 will easily lock the front wheels solid, with little effort.

Al




i]Originally posted by marv
I'm building an MK indy with a ZX10R bike lump, its time to choose some brakes. I have my eye on the willwood kits, two of which look ideal but I need some help choosing.
The 1st option is a direct replacement for the seirra set up, using there 'midilite' caliper, with 286mm vented discs.
The 2nd option is much lighter and cheaper, uses there 'powerlite' caliper with 256mm solid discs.
I want the best braking power possible but also I dont want to get riducusly big brakes that will do nothing more than increase the unsprung weight!
What set up do most Indy builders go with?

And finaly, I have a rear drum set up,(which has been carefully removed :-) ) MK have supplied me with a bracket for rear discs, does anyone know if the bracket allows you to simply bolt on some standard seirra rear calipers + discs?
Thanks

I'm also interested in the 257mm kit- I'm planning on speaking with Rally Design (UK Distributor for Wilwood) tomorrow to inquire about a group buy. I've seen substancial discounts on other forums from successful group buys- will update tomorrow PM with details.


Alex

260mm solid discs and powerlites are plenty enough to stop a 7,. and yes the plates allow rear calipers and carriers to just bolt on with sierra discs

Powerlites are very capable and quite light too.

And finaly, I have a rear drum set up,(which has been carefully removed :-) ) MK have supplied me with a bracket for rear discs, does anyone know if the bracket allows you to simply bolt on some standard seirra rear calipers + discs?
Thanks

Curve ball: would it be out of the question to use the motorbike calipers?

PROS: light weight, 4 or 6 pot design, cheap
CONS: new mounting plate required, is there enough pad area, can they withstand "foot pressure" as opposed to hand pressure?

I think Jedi single seaters use(d) them.

Ahh - looks like an old chestnut:

chestnut

Thanks, looks like I'm set with option 2, the powerlite, no need for bigger.
1st time posting and very impressed with all your responses, thanks very much.

Marcus.

se7ensport - you've got a U2U

On a separate point has anyone upgraded from the normal Ford M16's to Powerlites say then needed to change their master cylinder due to different characteristics of the caliper?

I've only got a single master cylinder setup on this and the brake balance as is it about right.

I'd rather not faff around with either a bias box or proportioning valve or different sized master cylinders etc.

If I have to do this I might be put off swapping the calipers.

I know they'll give a good unsprung weight saving but the car stops just fine as it is.

They are vented though so even more weight to be saved as I would probably change to solid...

Group buy if interested
http://www.locostbuilders.co.uk/viewthread.php?tid=84701&page=1#pid706456