manladypig
manladypig New Reader
4/22/19 5:52 p.m.

alright from a previous forum post I have decided to go with firewall mount pedals rather than floor mount pedals because reasons, and as of late I have not yet decided which pedals to get. I just got my new front calipers and now its time to actually buy the new pedals. I've been trying to find the right master cylinder and pedal combination all day and Im lost. I like these pedals: https://www.pegasusautoracing.com/productdetails.asp?RecId=28286&utm_source=google&utm_medium=cpc&utm_campaign=OBP-VIC04&gclid=CjwKCAjwzPXlBRAjEiwAj_XTEbbU6TCBoLGBIBTafF6sTB8ckD4OXFD6l32pVdSj_PdE1-HPVqiCUxoC9bkQAvD_BwE

but I have no idea what kinds of master cylinders would work with these or if master cylinders are generally universal? Also I can't seem to decipher what size master cylinders to get, The new calipers are bigger but they are designed for my car (fiat 124 1976) and they are designed to work with the stock size master cylinders. So now I will not have a brake booster, so I will obviously need different size cylinders, can anyone help with this? I don't know how calipers pistons are measured to find out and are master cylinders just measured by bore? 

 

P.S. the reason I like those pedals is because they come with a throttle pedal So i wont have to worry about finding a throttle pedal separately, so if you guys have any recommendations for some different pedals that would work better, which would be greatly appreciated, keep in mind I would prefer they include a throttle pedal

stuart in mn
stuart in mn MegaDork
4/22/19 6:10 p.m.

OBP also makes master cylinders, and sells pedal assemblies with them included.  http://www.obpltd.com  I'd look around their website, there may be some technical support information available there.

Ovid_and_Flem
Ovid_and_Flem SuperDork
4/22/19 6:21 p.m.

When I built my 240Z race car I used Wilwood fire wall mount pedal clusters. Actually they were mounted to the roll cage crossbar with remote reservoirs for the brake and clutch master cylinders. Throttle with cable operated. I assume you are not using vacuum boost. Wilwood technical department was able to configure what size Master cylinders I needed since I did away with vacuum assisted brakes. They make both hanging and floor mount pedal assemblies

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