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Question on '87 6V92 TA Muffler JR 2-18-03  
Is the muffler that is used on an 87 NJT MCI-9 with a 6V92 TA DDEC II different from what may be found on a truck with a similar engine? Another way to ask the question is: What parts are different in a "clean air technology" bus compared to buses without the clean technology? What makes it so "clean"? I have been told that the mufflers are really restrictive. Is this so? My muffler looks new, so I wouldn't want to replace it unless there is something to be gained HP wise. Thanks for any info. JR
Re: Question on '87 6V92 TA Muffler Joe 2-20-03  
The clean air has to do with cam timing, injectors, and blower ratio. My best advice to you is to use what you have the way it is. You can't change one thing without changing many things.
Re: Question on '87 6V92 TA Muffler JR 2-21-03  
Yep, I afraid you're right. I can't figure what exactly I have. The electronics that are mounted on the engine is not the DDEC IV..so its not the very latest design. And, the newest style timer is not installed on the cam balancer?? Maybe its half a "clean air"..or maybe NJT cheated just a little. Next winter I'll pull the engine if necessary to increase the HP. The bus is off getting skin and caps, so I cannot do much to sort it out. It runs good enough to get around NCl. As long as you don't get in a hurry. I've called several Detroit shops in this area to see what it would cost to increase the HP. Most don't seem to know much about 2 cycles..or don't want to know. How much trouble did you say it would be to install a "60" series into my MCI9? Just joking. Thanks, Joe
Re: Question on '87 6V92 TA Muffler Joe 2-21-03  
It would be less trouble to install an 8V92. Anyway I like the two stroke engines. I installed a 500HP electronic 92 series in a glider last year and it is a screamer. The owner loves it. The engine alone cost somewhere around $18,000 wholesale.
Re: Question on '87 6V92 TA Muffler Ranto 6-11-06  
Please,sent to me all data about muffler engine diesel Detroit 6V-92.
Complete with the picture on installated.
Re: Question on '87 6V92 TA Muffler JR 2-22-03  
What do you do to squeeze it in? Move the trans forward and shorten the driveshaft? I don't think I'd want to stretch the bus. I also like the 2 strokes. I don't have any problem with the 6V92..if its producing about 350 HP. This will be next winter's project. And, was the 8V92 you refer to a new engine? Will the Allison 740 handle the HP OK? Thanks, JR
Re: Question on '87 6V92 TA Muffler Joe 2-25-03  
Yes, the engine was new. I would guess your transmission would work, but first check with DDA. I'm sure with some work you can get 350 HP from your engine. More than likely yours is derated to about 260 hp. It was called a "fuel squeezer." Some of the NJT busses we worked on were even 230 HP.
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