| Author | Message | ||
| Alan Baker (64.12.96.235)
Rating: |
I'm thinking of buying a 6v92 turbo with 2 stage Jakes. It has aprox 100k on it and was rebuilt by Reliabuilt. It was delivered with 90mm injectors which have been changed to 100mm injectors. The present owner doesn't know if it has regular timing or advanced timing. I think this could be very important information with 100mm injectors,things like engine temp and engine life. I plan to replace my trusty existing 6v92T which in its present condition pushing an '84 Model 10 Eagle needs a little more grunt and I would like the security of having Jake breaks. All your imput will be appreciated. Thanks Alan Baker | ||
| Henry R. Bergman, Jr. (Henryofcj) (63.224.197.10)
Rating: N/A |
One would assume (dangerous word!) that since your hot 6V92T was rebuilt by the factory (or nearly soossss) that the timing would be correct for the application. I do not know for sures which timing is correct. Forgot. Sorry. As long as you kept your foot out of it until you really needed the power, I do not think you could hurt your driveline/radiator system. For for it and enjoy the Jake!!! | ||
| JimStacy (12.87.109.59)
Rating: N/A |
"Da Book" says ALL 6V92's were advanced timing as built. I can't imagine anyone changing that. FWIW Jim Stacy | ||
| Geoff (64.1.4.114)
Rating: N/A |
You don't say if your "trusty existing 6v92T" (or TA?) is running okay or not-- if it is, just put in bigger injectors and a jake brake at the same time. Why go to the trouble and expense of installing another identical engine? Both engines are standard timed-- that is the only way they are built (unlike the 71 series). Except for one thing-- I don't believe in installing size 100 injectors-- they are too big and make your bus exhaust smoke black. 9G90's (federal cams) will give you 350HP, 9G95's=375HP, and 9G100=400HP. I only run 90's in my 6V92TA and I am satisfied with the power-- it is a good size and you don't smoke. Do you know what size injectors you have in your engine now? --Geoff '82 RTS CA | ||
| Alan Baker (205.188.209.11)
Rating: N/A |
Great replies, here are my thoughts. My present engine runs like a swiss watch. It doesn't just have any gettieup, either from stop or pulling a hill. On the other hand I get pretty close to 8 mpg weighing 36k and pulling a 3200 lb car. I don't know what injectors are in my present engine, my guess would be 9H85's. Neither do I know its pedigree, it's the engine that was in the bus when I purchased it from ABC. "No history available." The engine I am thinking about comes with a good history from a reputable source. I called DD and asked about installing larger injectors in my present engine. They told me bad idea unless the timing was reset to the advanced position. So my assumption is that at least some 6v92's came with "R" timing Not knowing the history of my engine I would be be more comfortable doing an out of chassis rebuild before "hotting" it up. On the other hand I'm looking at an engine with a sterling reputation that's really priced right, less than 1/2 the cost of a professional rebuild and it comes with the jake. I'm this " close to to going forward but need an attaboy. Thanks Alan | ||
| Geoff (64.1.0.123)
Rating: N/A |
I don't know who you talked to at Detroit Diesel but they gave you the wrong information-- the only engine you advance time for bigger injectors is a non-turbo V71 series (the inline 6-71's can have advanced cam lobe positions). If you lack power from your present engine it is either from small injectors or a bad tune-up/rack adjustment. If your present engine is running fine and not using oil then it is perfectly okay to install bigger injectors and jakes. Just heed my warning that anything over a size 90 will create smoke and a shorter engine life (that goes also for the engine you are considering buying and installing-- 100,000 miles with size 100 injectors is hard on the engine-- its no spring chicken now). Even if you don't know the history of your present engine it doesn't matter if you know it is running good-- to me installing the other engine is a waste of money. You should install new rod and main bearings to either engine, whichever one you decide on. --Geoff | ||
| Alan Baker (205.188.209.11)
Rating: N/A |
Thanks Geoff, I guess I've got all the input I going to get from the group. Your advice is well thought and much appreciated. I have never had the valve covers off. So I am taking your advice and will proceed as per your recommendations. Thanks to all Alan | ||
| Geoff (64.1.0.180)
Rating: N/A |
After you get the valve cover off and get the injector tag number let me know what it is. --Geoff | ||
| Henry R. Bergman, Jr. (Henryofcj) (63.224.197.10)
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Another opinion is that unless you always use the extra power, having larger injectors in your mill will NOT really hurt it. It will only burn what fuel your foot gives it. However, larger injectors usually but not always result in some what lower fuel mileage unless the rack adjustment and overall tune up is perfect, if not some fuel is wasted. Go for it! |
