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big nut master cylinder


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#1 LC69GTR

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Posted 14 April 2006 - 06:52 PM

Can someone please tell me what these are from

Thanks in advance
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#2 LC69GTR

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Posted 15 April 2006 - 08:06 AM

Anyone help?

#3 _Dirty Deeds_

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Posted 15 April 2006 - 10:15 AM

Im not 100% certain but the one on the right ( with the 2 round humps ) looks like LC GTR/XU1, the one on the right looks like LJ GTR/XU1 and perhaps HT-K-G M0naro.

Do they have a cast date or stamps on the big nut?

#4 LC69GTR

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Posted 15 April 2006 - 11:23 AM

Thanks Dirty Deeds

I will have a look tonight for cast numbers or dates and post them

#5 Dr Terry

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Posted 15 April 2006 - 02:42 PM

Hi Guys.

The booster is LC/LJ 6 cyl to suit disc brakes (except XU-1, they're bigger).

The m/cyl mounted on the booster is the original GM-H cast iron type to suit LC/LJ 7/71 onwards. The other m/cyl (with the rounder ends) is the correct unit for HK, HT & HG as well as LC 6 cyl up to 7/71.

The m/cylinder will have 'DISC' or 'DRUM' stamped into the face of the big hexagon nut on its front, but the only difference between disc & drum is the residual pressure valve in the outlet for the front brake line.

Dr Terry.

#6 LC69GTR

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Posted 15 April 2006 - 06:00 PM

Thanks For that Dr Terry.
At least i know now what i have?

#7 _Dirty Deeds_

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Posted 15 April 2006 - 07:56 PM

What you have are 2 highly sort after master cylinders, Ive been chasing one for 4 months. Have got one now, but what a shit fight.

If you need them put them away, if you dont - now is the time to sell them as they are in hot demand.

DD




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