Original thread posting:

"Gents,
Today I installed a new slave cylinder and I noticed that the spring comes close or is right against the rubber boot on the the slave cylinder. Is this correct? I have the spring attaching at the end of the clutch fork (near the pin joint attaching the slave cylinder rod) and the other end attaches to a bracket that attaches to the lower bolt used to mount the slave cylinder. Also, how much spring tension should there be when the clutch pedal is NOT pushed in? Finally, the line that runs from my clutch master cylinder to the slave cylinder has a loop in it right before it bends down and goes vertical to the slave cylinder. Is this correct? I'm assuming the loop is there to help get rid of air when bleeding the system. I've never seen this loop before on other hydraulic clutch systems and wonder if it's really needed.
Thanks as always for your advice
Mike M"

My comment relates to those questions: "That hydraulic line coil also acts as a surge loop to prevent hammering in the system & help prevent aeration."

"So please explain just HOW a small loop of tubing is going to arrest hammer, or prevent aeration? Also, describe WHERE the air would come from that this loop supposedly prevents from getting into the fluid in this closed system. While you're at it, explain what is going to cause hammer in the first place.
This has got to be your all time most RIDICULOUS, ABSURD and IRRELEVANT post!

The following description explains: "Basic fluid dynamics: speed of a liquid in a bend, requires calculations for exact answer. Hammer caused by fluid motion, sudden shock in medium. Aeration caused by same. Surge coil helps prevent aeration over time."

"I wanna see the Mopar documentation about coils, hammering etc??????? I don`t think even the Chrysler engineers were concerned about any of that but what do I know,, I have read a lot of wild stuff on this forum. Is nuclear physics next???? haha!!

George"

Come on, George! The Chrysler Engineers assigned to designing brake systems certainly were very well educated and this stuff mentioned is rudimentary fluid dynamics. The science of it is the bahavior of a fluid, in this case in a 'closed system'. Yet we all know that this same 'closed system' has to have air bled out, is subject to water entrainment, contamination, foaming, aeration etc.

The fact that we cannot hear the hammering or see it as we drive has nothing to do with its possible occurrence. Think of having the clutch pedal depressed all the way, then sliding your foot off the side: something happens to the fluid forced suddenly into swift motion and that can be hammering, as a shock wave transmitted through a fluid medium, if no surge coil is in place.

Length of circuit has little to do with it, constant diameter of pipe does, combined with the bends which reduce the velocity of fluid in motion. That shock wave has an effect on the soft rubber seals, possibly causing them to deform. It's not often a perfect world inside a hydraulic brake system so such things can have negative & severe effects, causing malfunction from design parameters. As usual, Chrysler looked far ahead of the curve in their designs.

"Absolutely NONE of which applies to the brake and clutch systems on a vehicle!"

On the contrary it is directly related because it's the fluid dynamics that govern the system. It's malfunctions that cause us so much grief and Chrysler designed out some problems before they could occur.

Some of us in our younger days could stab a clutch motion in about 1/6 to 1/8 of a second or faster, critical on the drag strip or possibly a road course with a manual tranny. That rapid, forced fluid speed far exceeds granny's shifts on the way to market, but Chrysler knew that other folks took their vehicles & engineered systems far beyond 'normal' events to the ragged edge.

Fluid dynamics forms the basics of several systems in these Dodge trucks from the gas tank to the combustion chamber to the exhaust and also the brakes & clutch hydraulics, even the windshield washer.

Instead of rejecting & ridiculing all things you don't understand as RIDICULOUS & ABSURD take some time to learn of them. It's much more rewarding and may save others from suffering through your insulting diatribes, demands & outbursts.