Title: Re: [VAC] Re: Exhaust brakes - A word of caution
I haven’t had any experience using them, but the Jacobs Jake Brake is slightly different from exhaust brakes in that it changes the valve timing, whereas exhaust brakes restrict the flow of the exhaust to apply back pressure.   I believe Jake brakes make a lot more noise in operation than exhaust brakes.  

I have ridden on buses equipped with them, and they were set up the same way, i.e. when turned on, releasing the throttle activates the Jake brake.   As I mentioned in my previous post, it’s possible to activate it manually by turning it on or off with your foot off the pedal.  I don’t know how they’re set up in the big rigs.

Don

From: "Harvey Barlow" <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Date: Sun, 10 Jun 2001 10:27:06 -0500
To: Multiple recipients of VACList <[EMAIL PROTECTED]>
Subject: [VAC] Re: Exhaust brakes - A word of caution

I know that Jacobs, the original "Jake Brake" which has been used on 18 wheelers for 30 years or more is authorized by Cummins, the engine manufacturer for sale and installation on Cummins engines including Cummins powered Dodge Rams by either Cummins shops or Dodge dealers.  I checked and found that a local Dodge dealer can sell it through MOPAR parts and install it in their service department.

Has anyone out there had any experience with a Jacobs "Jake Brake"?

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