Duuuudee, YOU were NOT the one that was being called the smartass! Do you still think that?

 

The question in the OP has been answered, now this thread can be closed.

 

Jakes have been used on pushrod engines for many years

 

This is from Jacobs Vehicle Systems web site.

Do you make a product for the Ford 7.3L Powerstroke or Navistar International T444E engines?

ANSWER:

No, Jacobs does not offer an exhaust or engine brake for these engines in fact, Navistar and Ford have requested that we do not develop one for these engines.

The primary concern with putting a retarder on these engines is their use of hydraulic lifters. Most engines with hydraulic lifters have fairly low exhaust back pressure limits so the performance of an exhaust brake would not be substantial. More importantly the use of an exhaust brake on an engine with hydraulic lifters can cause engine damage. The problem is that the increased back pressure resulting from the operation of the exhaust brake will cause some degree of valve float. This valve float can cause the hydraulic lifter to re-set with the valve still open (not seated). This phenomenon is known as lifter jacking. Lifter jacking could also result if a traditional engine brake were used on these engines. The results of lifter jacking can be anything from low positive power (because the valves stay open) to engine damage caused by valve to piston contact.

 

Thats why you run solid lifters

 

Thats what I was told..

 

Is the EBPV brake safe to use on our trucks and does it help.I tow heavy loads almost everytime my truck cranks up and any little bit helps?