[TR] TR6 Master cylinder alternatives

[Bud Rolofson]

I did the Toyota caliper and larger rear wheel cylinder conversion on my TR6 long ago and over the years have developed what I call the “Triumph Tap” method of braking. I give a little tap on the brake pedal before fully apply the brakes, which gave me a less travel on the pedal. It got to be such a habit that I had to learn to stop doing it when driving the race car because it’s a detriment when heel/toe braking. 

Most of the pedal travel seemed to be in “waking up” the caliper pistons as they tended to spread a bit from some flex in the whole wheel/caliper/rotor system. It was more apparent when auto crossing as that system got flexed a lot more than normal driving. I got used to it and never bothered with a larger brake MC.

Bud Rolofson

Extreme Parts Racing (more than just a haircut)

71TR6 CC57365 (Good 6)
71 Spitfire MK IV Race Car #3
69 Spitfire MK III (back up FE engine/dinghy car)
93 Minnie Winnie Race Support Vehicle 
77 Z-50A Hardly Davidson Honda Mini-Trail Bike (Triumph Pit Bike)



> On Apr 17, 2020, at 7:02 AM, Greg Lemon <grglmn at gmail.com> wrote:
> 
> I looked into this a while back, did the conversion, never liked the extra pedal travel, I think maybe there is a 70s or 89s Jag MC with a slightly larger bore that works.
> 
> Greg Lemon
> TR250
> 
> On Fri, Apr 17, 2020, 7:55 AM Jerry Van Vlack <jerryvv at roadrunner.com <mailto:jerryvv at roadrunner.com>> wrote:
> Folks,
>  
> I’ve converted my TR4A to the dual TR6 with booster braking system. Recently I did the Toyota front caliper and larger rear wheel cylinder conversion. Braking is great but I don’t care for how far the pedal travels before engaging the brakes. I know I’m moving more fluid due to the increased size of the combined piston areas over the stock system.
>  
> My question is has anyone who has also done the Toyota caliper and larger rear wheel cylinders found a larger displacement master cylinder that is a bolt in replacement for the TR6 master cylinder and what is your result?
>  
> JVV
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