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Ben Perry

Mk2 cortina brakes+clutch

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Hi all wondering if any one can help me firstly I’m gunner run two remote reservoirs one for clutch (7.0 with rx8 box)? But my next question is what size shud I run on brakes I’m obviously gunner run a hydraulic bias valve, but I want to go rear discs and princess venteted front calipers since they are peanuts my worry Is will it work? 
cheers

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Firstly having two reservoirs are generally required / fitted with hydraulic clutch / brake systems! What I think you mean are Master Cylinders - whether a 0.7" master for the clutch will be correct is guesswork and subject to pedal ratio, slave cylinder and how you want it to actually feel!

If you aren't using a brake bias box with twin brake masters (a better solution IMO although more complicated) I assume you are retaining a std master cylinder and servo arrangement - i'd use a RS type, although the use of AP calipers on the front and discs on the rear will likely Gerbil up the pressures / feel / efficiency of the brakes. What you term a 'hydraulic bias valve' isn't, its a fluid flow restriction device and a 'Band Aid' solution for a mismatched brake set up - it just makes the rears work less efficiently. Ultimately, IMO, i'd forget the front / rear adjustment and put even bigger brakes on the front so you can use a twin port, single master into a diagonally split system that would be balanced front to rear - This is not easy, but the car manufacturers are very good at it - the average car fettler not so!

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2 hours ago, katana said:

Firstly having two reservoirs are generally required / fitted with hydraulic clutch / brake systems! What I think you mean are Master Cylinders - whether a 0.7" master for the clutch will be correct is guesswork and subject to pedal ratio, slave cylinder and how you want it to actually feel!

If you aren't using a brake bias box with twin brake masters (a better solution IMO although more complicated) I assume you are retaining a std master cylinder and servo arrangement - i'd use a RS type, although the use of AP calipers on the front and discs on the rear will likely Gerbil up the pressures / feel / efficiency of the brakes. What you term a 'hydraulic bias valve' isn't, its a fluid flow restriction device and a 'Band Aid' solution for a mismatched brake set up - it just makes the rears work less efficiently. Ultimately, IMO, i'd forget the front / rear adjustment and put even bigger brakes on the front so you can use a twin port, single master into a diagonally split system that would be balanced front to rear - This is not easy, but the car manufacturers are very good at it - the average car fettler not so!

Cheers for your reply I meant master cylinders lol and thanks for your help so you think to use a bias pedal box ?

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4 hours ago, Ben Perry said:

Cheers for your reply I meant master cylinders lol and thanks for your help so you think to use a bias pedal box ?

That's what I did - but I sort of didn't have a choice what with fitting a Zetec, the induction used all the space available! Don't if its right yet and wiring not finished but feels ok on the pedal!

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1 hour ago, katana said:

That's what I did - but I sort of didn't have a choice what with fitting a Zetec, the induction used all the space available! Don't if its right yet and wiring not finished but feels ok on the pedal!

Yeh tell me about it I’m zetec with k series inlet it’s very tight lol did you use mk2 box? If so pretty straight forward bracket fab? 

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T9 in mine and tried the Retroford bracket but couldn't make it work so fab'd up a mount - it's a bit gash but should do the job!

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