1973 Jaguar Brake Master Cylinder
#1
1973 Jaguar Brake Master Cylinder
Seems the reman units have gone up in price over the years like everything else, $150 is the best price I have found. When I look at it, it seems so small and simple - has anyone found a simple GM/Ford master cylinder that will work instead? Maybe with an attached reservoir? The parts description mention a 15/16 bore
I suppose it is not just the $150, but I wonder if it works as well as the one on a Chevy truck?
I suppose it is not just the $150, but I wonder if it works as well as the one on a Chevy truck?
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Roger Mabry (01-01-2020)
#5
No offense taken, and what I was really concerned about has come true - that 40 year old design for $150 does not have as effective stopping power as a $14 Chevy master cylinder with its matching booster. I regret not making more effort to modernize the system,.... maybe in a few months. But I have a daily driver now and that is good.
The car is worth the effort and money, it has wonderful styling and just enough Chevy parts to make it at least start, run and not leak.
The car is worth the effort and money, it has wonderful styling and just enough Chevy parts to make it at least start, run and not leak.
#7
Another good possibility is to have your original MC sleeved and rebuilt... Relatively inexpensive as well.
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#9
Master Cylinders are designed to be used with specific brakes and the design is based in the principles of hydraulics. It's the MC's bore diameter for a given caliper/slave cylinder that influences how the brakes perform. The quality factor is purely how well its manufactured and what type of seals it uses. The Jaguar setup is made by Girling (I think) who have been in the braking game from the start!
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yachtmanbuttson (01-07-2020)
#10
Master Cylinders are designed to be used with specific brakes and the design is based in the principles of hydraulics. It's the MC's bore diameter for a given caliper/slave cylinder that influences how the brakes perform. The quality factor is purely how well its manufactured and what type of seals it uses. The Jaguar setup is made by Girling (I think) who have been in the braking game from the start!
#11
Interesting. I have just fitted Series 2 four piston callipers with ventilated discs to my Series 1 rebuild. Now you have got me worried in that maybe the S1 M/C is not suited to the task. I have yet to inspect the condition of the said M/C, so maybe the time is ripe to upgrade that as well. Any thoughts appreciated.
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LT1 jaguar (01-14-2020)
#12
The danger is that the swept volume of your master cylinder is insufficient to supply the bigger-pistoned brake calipers before the master cylinder runs out of fluid to push. Think of a syringe coming to the end of its travel before it has filled up a larger-volumed container. The best plan would be to measure the volume of both the S1 and S2 master cylinders; and if the newer one is larger, use that.
I noticed that on the Series 2 ($500 parts car) I cannibalised for the discs etc. the brake lines are much more involved, the ones in the engine bay that is, maybe because the later model incorporated some warning device. Not sure if I'm chewing off more than I can digest with this, so further research required! Cheers.
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