Installation of Jake Brake on 88 8V92 DD

[towanda692006@...]

Thanks Curt, This confirms what I was told as well, We haven;t bought the set yet, so I think I will pass. I haven't found very many technicians who have any knowledge with the old DDEC I system. We were offered a Jake set, minus wiring for $600, which seemed worth reserching. Thanks for your response. Ken and Patti Marsh 89 WB40 Towanda --- On Thu, 7/23/09, Curt Sprenger wrote: From: Curt Sprenger Subject: Re: [WanderlodgeForum] Installation of Jake Brake on 88 8V92 DD To: WanderlodgeForum@yahoogroups.com Date: Thursday, July 23, 2009, 11:41 PM Ken, There is no upgrade to a Jake Brake from the Transmission Retarder that I know of. The two units are independent. You use one or the other. I'm in no way an expert here, but I believe you turn OFF the Retarder (switch) and then use the Jake Brake. That is what I have done on our Mechanical Detroit 8V92, and I've been in touch with an Allison dealer to confirm this. My research tells me that you install the Jake for the DDEC, then take the coach to a dealer for re-program utilizing the Jake Brake and making the ECU work properly. Hope this helps. Curt Sprenger 1987 PT38 8V92 "MacAttack Racing" Anaheim Hills, CA Read all about Southwest Bluebirds and Friends (SWBB) at http://www.SOUTHWES T-BLUEBIRDS. ORG ...Then Join us. "Host of the Annual Bluebird Quartzsite Rally" On Thu, Jul 23, 2009 at 3:43 PM, KP Marsh <towanda692006@ yahoo.com> wrote: --- To the forum: We have an 89 WB 40 coach that was built with an 88 DD 8V92 engine. This model has the firstmodel of DDEC I which featured a 2 part ECM and required a DDR Reader by Ragen called a "T" bone tester. This coach is also equipped with a transmission retarder that we would like to up-grade to a Jake Brake. Does anyone of the forum know whether this modification can be done on this model of DDEC or couldit be wired as a strictly electro-mechanical set-up with a switch on the dash?I would appreciate any information. We have not purchased the Jake set-up yet, just doing my research. By the way if thereis any owner of these old DDEC units that need to borrow our tester feel free to contact me. Ken and Patti Marsh 89 WB Towanda and our 6 cats Full-timing currently at Carson National Fish Hatchery, Carson, WA