Hi NickI had jakes installed on my 6V-92, they work great as I live in British Columbia lots of grades. I got a used set from a wrecker for $800 and paid $800 to have them installed.Gary
Brian -Whoever made that statement doesn't have a lot of "seat time" in a bus equipped with a two-stroke and a jake.IIRC, his comments were about an 18-wheeler loaded to 80,000 lbs, a whole different scenario compared to a 30K bus.Back in my charter driver days, I used to put 80K/year on buses with jakes, working CA, OR, NV, & AZ. Believe me, jakes work fine on two-strokes. Example:WB I-80 from Reno NV to Sacratomato CA has over 70 miles of 4, 5 and 6% grades once you crest Donner Summit. Flip the jake on at the summit, and the coach would settle in between 60 - 62 mph all the way down the mountain, never once having to touch the regular service brakes. Unless, of course, traffic conditions required you to. But your brakes were cool in these situations - not hot from having to control your downhill speed.Same thing coming off the Grapevine either NB or SB on I-5 - a jake-controlled 60 - 62 mph all the way down the hill, never touching the service brakes.Next time somebody claims a jake doesn't work with a two-stroke, ask them how much time they've had behind the wheel of a bus equipped with one.Nick -Spend the $$ to have a jake installed. It's well worth it, in terms of safety.Just make sure you've got a good two-stroke technician doing the installation, as some of the set-up is tricky (fast idle buffer switch, for example).FWIW & HTH. . .