original brake pipes

[Peter Barnes]

Help please. I refer to my copy of the Illustrated Parts List, Plate U, it states the front to rear brake pipe is 3/10th , I guess that would be 5/16 ".

Those of you who have seen the original cars can you confirm this? Also, if the pipe is 5/16" then the 4 way connector would have the one 1/2" connection.

As most of the parts on the original GT40s were used on other vehicles, can anyone tell me where to look for the 4 way union ?

Many thanks, Peter.

 

[Ryan L]

Don't know where the union was sourced from, but the mounting bracket on the chassis was on the Starboard side, inner rear edge of the rear horse shoe/mounting collar.....

I am keen to hear the answer as well. Maybe look and see if its a ford part from some of the UK fords. ie Zephyr rear differential union.

 

[Graham Endeacott]

Help please. I refer to my copy of the Illustrated Parts List, Plate U, it states the front to rear brake pipe is 3/10th , I guess that would be 5/16 ".

Those of you who have seen the original cars can you confirm this? Also, if the pipe is 5/16" then the 4 way connector would have the one 1/2" connection.

As most of the parts on the original GT40s were used on other vehicles, can anyone tell me where to look for the 4 way union ?

Many thanks, Peter.

Hi Peter,

You're overthinking this - 3/10" is a typo and is obviously meant to be 3/16" as the other brake pipes in the Parts List are shown.

So brake lines are 3/16" and clutch lines are 1/4". The 4-way brake pipe connector has 4 unions all of which are 3/8" UNF so you need a brake pressure switch which is 3/8" UNF. Both this and the union are readily available.

E-mail me if you need more info.

Regards,


Graham.

 

[Peter Barnes]

Hi Peter,

You're overthinking this - 3/10" is a typo and is obviously meant to be 3/16" as the other brake pipes in the Parts List are shown.

So brake lines are 3/16" and clutch lines are 1/4". The 4-way brake pipe connector has 4 unions all of which are 3/8" UNF so you need a brake pressure switch which is 3/8" UNF. Both this and the union are readily available.

E-mail me if you need more info.

Regards,


Graham.

Hi Graham,

That makes good sense.

I have a photo of originals with the 2 pipes running to the rear, clutch and brake, and the lower pipe appears to be larger.

This may be miss leading. I don't know which chassis this is .

Thanks for the info. Best wishes, Peter.

 

[Graham Endeacott]

The lower pipe is the clutch pipe but it doesn't go to the 4-way union, it's actually the clutch hose tucked out of the way; with the engine in place it would connect to the clutch slave cylinder.

Regards,

Graham.

 

[David mono]

The photo above is GT40 1085.