Author |
Message |
William J Kluge, Jr. (Flx_a_bill)
Rating: Votes: 1 (Vote!) | Posted on Tuesday, November 15, 2005 - 2:55 pm: | |
Is it that hard to convert 6V92 with mechanicals to a DDEC system, so you can possibly take advantage of the electrical interfaces, ie, take the DDEC system from a worn/blown newer 6V92, and put it on an older 6V92 that is in good condition, and re-calabrate the ECM. I believe I have the means for recalibration... |
Jim Shepherd (Rv_safetyman)
Rating: N/A Votes: 0 (Vote!) | Posted on Tuesday, November 15, 2005 - 5:14 pm: | |
Bill, as I noted in another response, I hope someone more knowledgeable chimes in here. The DDEC uses electronic injectors and several transducers, plus the ECM. I doubt that there is physically a place to put things like the crankshaft position sensor. I think you would be much better off finding an good DDEC 6V92. Either way you would have to make the harness and install various switches/lights/throttle/etc. in the driver area. I would suspect that several folks will suggest to you that it is not worth the effort to convert the mechanical engine (if it can even be done) and others will suggest you not go to DDEC. Personally I think the DDEC gives you a lot of good things and the argument that you can fix a mechanical engine in the field is wishful thinking in my opinion. Jim |
William J Kluge, Jr. (Flx_a_bill)
Rating: N/A Votes: 0 (Vote!) | Posted on Tuesday, November 15, 2005 - 5:41 pm: | |
Thanks, I've downloaded a few DDEC III and IVs in the buisness that I'm in, which is collision analysis, but in most cases, it is a Series 60 engine. And one thing I was wondering, since I don't have a manual, is if the DDEC equipped 6V92 used electonic injectors, or just controlled the rack electronically. The other stuff I was not to worried about. But if it has electronic injectors, then the heads are significantly different, which likely means, more internal parts are significanlty different. Yet its the electronc controls that help it talk to the newer transmissions with electronics and other stuff, and reduces the hardware running to the front of the bus.. which you know. This helps me a lot.. And I'm glad you got your trans and engine comminicating.. with those darn modern electronic devices... |
Sammy (Sammy)
Rating: N/A Votes: 0 (Vote!) | Posted on Tuesday, November 15, 2005 - 8:20 pm: | |
Best bet is to find a good used 6V-92 with DDEC. Many transits were re-powered with Series 50's.There should still be some 6V-92's with DDEC 2 around. I wouldn't go through the trouble of converting a mechanical engine to DDEC.Conversion cost is not practical. You'll need an electronic foot pedal assy, coolant level module (DDEC 2),wiring diagrams of your vehicle,and DDEC 2 wiring diagrams.You'll have to fabricate a power harness for the DDEC ECM. You will also have to provide a VSS ( vehicle speed sensor) signal to DDEC, from the trans. Hope this helps. Sammy |
Chuck Newman (Chuck_newman)
Rating: N/A Votes: 0 (Vote!) | Posted on Tuesday, November 15, 2005 - 9:00 pm: | |
William, I totally agree with Jim and Sammy. Forget about converting a mechanical engine to DDEC. Also, the higher the DDEC number, the greater number of engine parameters it uses. Which means more integration within the engine. I got an MCI intercity model used by a So. Calif. transit agency. They pulled out a 8V92 and repowered it with a S50 and DDEC III for EPA credits. Has only 400 K miles on engine. Runs like a top with no heating issues. I waited three years to find it. It's a 1989, and I suspect more of that vintage that were repowered with a 4 stroke will be on the market now. To find a good deal, keep looking and calling. When a good hit the open market it won't last long. Good luck, Chuck Newman Oroville, CA |
Dale L. Waller (Happycampersrus)
Rating: N/A Votes: 0 (Vote!) | Posted on Tuesday, November 15, 2005 - 9:07 pm: | |
To convert a 6v92ta to DDEC would be a very difficult task. The DDEC has electronic injectors with a wiring harness in the head. Just an example a part# for the DDEC injector is 5234960 if you want to do a search and find a pic. Although it appears it may fit a TA head, I don't have the part #'s for the heads at home. Also I don't believe the cams are the same they have different part #'s IMHO You should be able to find a 6V92 DDEC cheaper and EASIER than you can "make one". |
JR
Rating: N/A Votes: 0 (Vote!) | Posted on Tuesday, November 15, 2005 - 9:33 pm: | |
If you wish to go DDEC (DDEC II or higher) find a donor coach and buy the whole thing and drive it home. Now at least you have all the parts fo complete the conversion. Changing from MUI to DDEC will be way to tedious (you'll have to change the engines)....you'll also have to change the trans to an ATEC (Allison HT748 or B500)if you wish to eliminate all the mechanical linkages. Your trans would work with a DDEC as long as the ECM is not for an automatic. No cruise control without VSS. VSS is part of the ATEC units, and you would have free cruise control with the DDEC/ATEC combo. With a donor, you have everything...all you have to do is pull it and reinstall same. Don't really see why anyone would want to do this. All you'll gain is (perhaps not)a mile per gallon of fuel, and an easy accelerator and cruise control. Probably be easier to convert another shell with a DDEC engine. Keep your MUI and enjoy. On road repairs are not likely on either MUI or DDEC. Be careful and don't buy a DDEC 1 for a donor. They are essentially obsolete, but there are good many working without issues. I've got one. Thought about repowering, but just cannot find a reason to do so. Takes a lot of fuel savings to pay for repowering an old coach...? Good luck, JR |
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