Irv,
Another thought..maybe you have a leak in the booster diaphram that
shows up once it heats up the engine bay. Try a bolt in the vacuum
hose going to the booster. You'll still have brakes, just not
"boosted" brakes.
Had a booster go out pulling into the VTR parking lot in Portland,
Oregon for VTR2000, but someone pointed out that I still had brakes so
I autocrossed it and drove 1400 miles home and didn't replace it for
about a year. I kinda got used to driving it that way and almost
thought about disconnecting the vac line and plugging it to autocross
because I felt like I had a better feel for pedal pressure when
braking for cones.
Bud Rolofson
71TR6 CC57365 (Good 6)
66TR4A CTC57806 (The Wreck-Almost parts)
66TR4A CTC57529 (The Project)
71F-250 Camper Special (Triumph Support Vehicle)
Z-50A Hardly Davidson 1977 Honda Mini-Trail Bike (Triumph Pit Bike)
levilevi@comcast.net
On Aug 15, 2011, at 6:16 AM, Irv Korey wrote:
> My car, a 74 TR6, is experiencing a very long brake pedal after I
> have been
> on the road for a while. The pedal goes almost to the floor, just
> like the
> dreaded brake pad knockback. When I drive around town, this doesn't
> occur,
> only on a road trip (I am on my way to VTR). This doesn't happen
> after a
> hard corner, just some highway cruising. My current setup is
>
> new brake rotors
> freshly rebuilt Toyota calipers with new pads
> Uncle Jack front stub axle, wheel bearing kit, front hubs
> new ss brake lines
> new aluminum drums
> new 7/8" Morgan rear wheel cylinders
> new rear shoes
> new master cylinder
> rebuilt servo
> fresh DOT5 fluid, bled twice, no air visible
>
> Using the grab the wheels and shake test, the wheel bearings are
> tight. I am
> not losing any brake fluid. I was, and discovered that the o-rings
> in the
> PDWA were bad, and was losing fluid and I imagine brake system
> pressure from
> under the switch. I just discovered the source of that leak just
> before
> leaving for VTR, and didn't have time to replace the o-rings so I
> removed
> the switch and put a plug in its place. Other than this issue, the
> car stops
> great.
>
> Any thoughts/ideas/suggestions gratefully accepted.
>
> Thanks,
>
> Irv Korey
> 74 TR6CF22767U
> Highland Park, IL (now in Council Bluffs, IA)
>
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