Spacer or no spacer when mounting Wilwood's brake and clutch master cylinders

[beijing_ken]

Hi All,

When mounting your aftermarket Wilwood's brake and clutch master cylinders do you use the factory spacer that was in place with the original equipment ?

I have seen one photo on the internet using the spacer with the Wildwood products on a Tiger.

Thanks,

Ken

 

[PROCRAFT]

Depends on what you want for your application,we're using wilwood cylinders 1.25 spacer on the brake .75 on the clutch we've done this to allow the masters to be further forward moves the pedals forward also which is what we're looking for.

 

[PROCRAFT]

Here's a shot of what we speak

 

[Charles Johns]

Just make sure the plunger rod is matched to the piston travel in the master. Some spacers work as "fishplates" (firewall stiffeners) while others work as limiters for the rod.

 

[PROCRAFT]

Just make sure the plunger rod is matched to the piston travel in the master. Some spacers work as "fishplates" (firewall stiffeners) while others work as limiters for the rod.

Not in this case either Alpine or Tiger has a firewall stiffener!

 

[beijing_ken]

Perhaps I can clarify things.

Have an aftermarket clutch master cylinder and clutch slave, both from Wilwood.

The stroke on the clutch master cylinder is 1.4 inches, and on the slave it is 1.38 inches; can someone please tell me the stoke on factory clutch master cylinder and slave please ?

My car is an automatic so I have nothing to check ?!

The data from Wilwood is attached.

Thanks,

Ken

 

[PROCRAFT]

Your original question was about weather or not to use a spacer not sure what the rest of this stuff has to do with that??????

 

[beijing_ken]

The need or lack of need for spacers has a lot to do with how far the original equipment travels in terms of its stroke.

If someone has the data please pass it on.

Thanks,

Ken

 

[260Alpine]

The pushrod should be adjusted for a little wiggle room in the master. I like around 1/4" free play at the pedal. Same with the slave pushrod, just making contact but not pushing on the throwout bearing until the clutch pedal is depressed.

 

[beijing_ken]

Thank you for the advice 260Alpine,

In an effort to help myself, I found an original brake master cylinder and it has a stroke of 1.625 inches; is the clutch master cylinder the same as the brake master cylinder on a stock Alpine ? If so that solves one issue, but I do NOT have a slave cylinder as my car is/was an automatic ~ can anyone tell me the stroke of the stock slave cylinder please ?

With this information I can determine the ideal spacer size, and avoid over stroking or under stroking the clutch hydraulic system and avoid damaging my pressure plate and not need to install a clutch pedal stop.

Thanks,

Ken

 

[beijing_ken]

A quick update if you are curious:

Brake Master Cylinder
Factory stroke length: 1 3/8”

Wilwood(.75 bore ~ 260-1304) stroke length: 1.4”

Clutch Master Cylinder
Factory stroke length: 1 ½”

Wilwood(.7 bore ~ 260-6579) stroke length: 1.4”

Clutch Slave
Factory stroke length: 1 ½”

Wilwood(pull type ~ 260-1333) stroke length: 1.38”


Note: factory parts based on chassis # B39502287-on.


A special thanks to Kristine G. at Victoria British for the data on original equipment.

 

[beijing_ken]

Just an update, I have heard from another person at Victoria British who says the clutch and brake master cylinder have the same stroke length of 1 3/8".

Both measurements are with 1/8' so not so dire a situation.

Ken