Frank
The springs are indeed different, along with the valve in the brake bore.
Larry
-----Original Message-----
From: Frank Clarici <spritenut@exit109.com>
To: Larry and Sandi Miller <millerls@msn.com>
Cc: spridgets@autox.team.net <spridgets@autox.team.net>
Date: Wednesday, September 16, 1998 8:18 PM
Subject: Re: 3/4 Master Cylinder
>Larry and Sandi Miller wrote:
>>
>> Can anyone verify for me that the push rods are the same between the 3/4
and
>> the 7/8 MC's. I'm looking at a 3/4 to put in one of my Bugeyes and
noticed
>> that the hole in the piston where the rod fits is only about half as deep
as
>> the hole in the piston for the 7/8. Seems to me that it would make the
end
>> of the piston sit about an inch deeper than it would on the 7/8. All
>> reference's seem to indicate that they are the same.
>>
>> Larry Miller
>
>Larry
>
>Yes indeed they (the holes in the pistons) are much deeper on the 7/8
>master.
>I never noticed this before and this would have been the reason my
>brakes were locked on when I first swapped out the 7/8 for the 3/4
>master but I did use the original 7/8 push rods (because they were
>already painted and srill in the pedal box) This drove me nuts for a
>couple of days since I thought my troubles were due to silicone brake
>fluid.
>In the end I just re-adjusted the pushrods (from the 7/8)and the brakes
>have been fine since.
>I don't know for sure if the push rods are different, I have a tray full
>of them and they are all the same length. I also have 3 or so of each
>master and will never know which rods went to which masters.
>I will look into this further tomorrow. The springs in the 3/4 may be
>different to accomodate the shorter piston.
>Either way, go ahead with the 3/4 bore, the only thing you will have to
>do is reset the length of the travel on the rods once it is installed.
>
>Thanks to your question I have answered my own question of "why" when my
>brakes were locked up back in April when I was going to sell em all!
>
>Always learning.....
>
>--
>Frank Clarici
>Toms River, NJ
>Lots of LBCs
>http://www.exit109.com/~spritenut
>
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