Topic: master cylinder question

[DWhitaker]

I am currently working on a 65 coupe with power brakes. It needs a new master cylinder. I know the power m/c has a 7/8" bore while the manual brake m/c cylinder has a 1" bore. Has anyone ever used a non power m/c on a power application? Are there any consequences to doing this? I am considering doing this because this customer has terminal cancer and does not have much money to spend and the power m/c is considerably more expensive.  I am assuming it will make the brakes more touchy and powerful with the larger piston. Any experiences or advice would be appreciated.

[5F09CNot4Sale]

I found an rebuilt "original" rebuilt Power Brake Master Cylinder that just happen to be date code correct for my 64.5 at Autozone. Whopping cost 19.99 Might check the auto part stores for one.

[DWhitaker]

I checked Autozone first and they told me it was no longer available for p/b application. They had the manual brake cylinder in stock for 18.99. I checked Advance and they said they could order it for 87.99. Like I said these people don't have much money due to doctor bills and want to let their grandson drive the car and I was just wondering if the manual brake master cylinder could be used as a suitable replacement for the p/b one with no problems. Thanks for any advice or suggestions.

[5F09CNot4Sale]

Sorry it did not work out. I got lucky I guess.  Worth a try though. Good luck.

[JKWilson]

I don't know what the price range you were considering (obviously the less expensive the better), but if you check rockauto.com you can find the PB version for an average of about $38, that's also with NO core charge required. I've had good service from them, and on name brand parts. If you check their rebates or watch the closeouts you can get even better prices.

[DWhitaker]

Thanks for the suggestion on rockauto. will check them out.

[C5ZZKGT]

May be pull the booster off and install a dual m/c from a '74 Maverick like some have done-safer & perhaps cheaper.

[tomtri66]

I don't know what the price range you were considering (obviously the less expensive the better), but if you check rockauto.com you can find the PB version for an average of about $38, that's also with NO core charge required. I've had good service from them, and on name brand parts. If you check their rebates or watch the closeouts you can get even better prices.

+1 on Rockauto.  I have had good experiences with them for parts for all of my cars.

[DWhitaker]

Got one on the way from Rockauto. $44. shipped. Thanks for suggesting them guys. The dual m/c would be a great idea for safety reasons, especially on daily driven cars, but this will be a direct bolt on that will retain the original appearance, with no replumbing issues and it is just an occasional driver.