bobcotkg Posted April 19, 2009 Share Posted April 19, 2009 I have a '88 Superliner that has a 350 E6 4 valve. Its got a Dynatard. I got a Jacobs brake setup given to me. The numbers say its for an E7 4 valve. Just wondering if it will fit, and what I am going to need to get before I put it on. Is it even worth monkeying with? I have been told that the Jakes work alot better that Dynatards, but, this is already setup and works. I was also told if it ain't broke don't fix it!Thanks,Bob Quote Link to comment Share on other sites More sharing options...
Lmackattack Posted April 19, 2009 Share Posted April 19, 2009 its been a while but I recall the jacobs being stornger than the dynatards on the 6 cyl macks. the truck that I drove with a dynatard would have slowed better if I tide a log to a chain and let it roll off the back of the truck. it was also a poorly maintaind truck so that could have alot to do with the performance? But like mentioned if the dynatard is holding you back fine why mess with it? Quote Link to comment Share on other sites More sharing options...
bobcotkg Posted April 20, 2009 Author Share Posted April 20, 2009 I would agree about dragging a log to slow down would work just as good as my Dynatard. For Stage 2 on my truck I have a big foam hand with the word stop on it I stick out the window. LOL! I would compare the Dynatard to 1.5-2 power on my N14 Cummins. It works but was hoping a Jake would work better. Never drove a Mack with a Jake so...Also I have heard Dynatards are hard on the cams. IDK,Bob Quote Link to comment Share on other sites More sharing options...
bobcotkg Posted April 20, 2009 Author Share Posted April 20, 2009 *Cam. Not cams.Bob Quote Link to comment Share on other sites More sharing options...
Gambi80 Posted April 20, 2009 Share Posted April 20, 2009 I've been wanting a better engine brake for my Mack too...If you decide against using that Jacobs setup, let me know because I have an E7 motor.Anyone know what it takes to swap out the dynatard(stealth) for the Jake...?? Quote Ever wonder how a blind person knows when to stop wiping? Link to comment Share on other sites More sharing options...
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