Quote:
Originally Posted by hockeyjerk1
My MC is 1/8 bore on my 1/2 ton but I can get a really good deal on a 1/4 bore MC that is listed for a 3/4 ton truck. Does it really matter? Is anything affected by the larger bore? It will be mounted on a factory booster.
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Yeah; it kinda matters.
Bore affects line pressure, which translates into pedal feel, pedal travel and pedal force.
If you start playing with the bore you could get into situations where you can't generate enough line pressure, or the pedal travel is affected such that you don't get good pedal feel until the pedal is too close to the floor, etc, or the pedal is too high/rock hard. The engineers chose that bore size for a reason, after extensive testing.
Probably best to just pony up the bucks and get the correct master cylinder - especially when dealing with a safety item.
K