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Ahh the eternal question of power versus economy. You didn't indicate if the 6V92 is a turbo or not. Called a 6V92T or 6V92TA. The turbo engine will increase power and improve fuel economy. ^The rare non turbo will be worse than the 8V71. The turbo engine will not like life with a 4 sp manual gear box. The 92 series seem to want to live above 1500 rpm and loose liners and cranks below that. I have seen very few 92 series engins in busses survive to teardown as the tour drivers like to short shift and load the engines at low RPM. In an extreem case we were over hauling an 8V92TA ever 6 months due to this abuse till a driver got on it that kept his foot out at low RPM and kept his revs up. It lasted almost two years with him untill the bus was sold. There all sorts of technical chalenges doing this as a low cost swap. 1ST is matching trans, alternator and air compressor to the new engine. Secound the 6V92 is shorter. So you need to line up the rear pully to the fan drive box and re build the mounts to work. Drive shafts, shift linkage etc etc. ANd last but not least the 92 series engine puts much more heat into the coolant than the 71 series. It has to do with how they cool the intake air. Change the rads and go to the highest capacity you can fit in the holes. A fellow I helped do this swap on a MCI 5 C built his own cooling system with the masive rad out of a truck to cure this problem. Good luck. |
RV and bus conversion info since 1996.
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