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Message |
Manny Montesino (Buscrazyinfl)
Registered Member
Username: Buscrazyinfl
Post Number: 4
Registered: 6-2006
Posted From: 24.26.9.146
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, July 11, 2006 - 5:50 pm: | |
In regards to the 8V-92TA, and the 6V-92TA engines,Which is the preferred engine to have? What are the pros and cons of each? looking to buy an MC-9 |
chad hill
Unregistered guest
Posted From: 74.32.92.48
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, July 11, 2006 - 6:57 pm: | |
Manny you will get different answers from different owners i have had a 8v92 for 14 years and love it from reading the posts they get about the same mpg,a 8v92 is a problem cooling in a mci i have a eagle and there is no problem with cooling, your best bet would be a 4 stroke engine |
john w. roan (Chessie4905)
Registered Member
Username: Chessie4905
Post Number: 285
Registered: 10-2003
Posted From: 69.162.3.30
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, July 11, 2006 - 9:29 pm: | |
Everybody has an opinion on this subject. If you get one with a 8V92, which was factory installed, you won't have to be sorry for not getting the bigger engine if you had gotten the 6v92.The smaller engines are nice, but some coaches can get pretty heavy with all of the stuff we start to carry with us.You aren't going to appreciably increase the power in the smaller one if you are unhappy with power later.Just remember that the 8v92's can be detuned quite a bit, if desired, which can significantly increase the miles to rebuild,have lower heat rejection to the radiator and increase fuel economy with proper gearing.8v92 rated from 350hp to 500hp-6v92 rated from 270 to 400 hp. |
Greg Peterson
Unregistered guest
Posted From: 71.228.18.37
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, July 11, 2006 - 9:36 pm: | |
It is difficult to find a MCI 9 with an 8v-92ta or a 4 stroke in it. The typical factory installed engine is an 8v-71 or a 6v-92ta. Sometimes you will find a Series 50 4 stroke that was retrofitted into the MCI9 but it is important to find out who did the install and if they did the radiator, aftercooler, and other modifications correctly. The Series 50 would also work better with a 6-speed transmission. The standard transmission was a 4 speed 740 and is not ideal when using a Series 50.
I like horsepower and torque in my engine. Before I bought a bus I was a so-called “lurker” on the BB and always read posts about guys needing more power or overheating when climbing hills. I bought an underpowered RV and experienced these problems first hand. I got to share the bad experience with a guy that had an 8v-71NA while parked at a campsite. He was wondering if he could turbo his engine. We talked to another guy that had a 450hp Cummins and he did not understand why we had any problems on that big hill before the campsite.
Based on these experiences I had a clear idea about bus engines.
I decided to buy an 8v-92ta because of the added power. I would have preferred a Series 60 4 stroke but I am too cheap to spend $100k on a MCI DL3.
I bought a MCI 102a3 because they are reasonable in cost and there are many for sale that have a factory installed 8v-92ta. I have no heating problems with the factory installed 8v-92ta in the MCI 102a3. Another benefit is the extra 6 inches you get inside the bus as compared to the MCI9. This gives you almost a full 8 feet of inside width that really makes a big difference especially if you do not install a slide out.
In my opinion nothing runs like a V8 in cars so why not in a bus. Give me lots of cylinders and cubic inches and then throw on a super charger and turbo for fun. |
Henry of CJ
Unregistered guest
Posted From: 74.32.168.91
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, July 18, 2006 - 4:55 pm: | |
In my humble opinion, (which is usually WRONG!!!) bigger in a bus is better. However, like all endeavors of mankind, there are tradeoffs of all sorts.
I wanted big Cummins power in my '74 Crown 10-wheeler, but calculations indicated about 400 hp was the most I could go without major updates to the radiator, tranny and perhaps U-joints and rear ends.
To answer your question, PROBABLY the 8V92TA would be a better choice....IF the coach did not overheat or chew up clutches or drivelines. Afterall, sometimes smaller is a better engineering choice. Good luck. |