| Author |
Message |
jay matlin (216.78.39.103)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 15, 2002 - 10:23 pm: | |
I have a MCI-7, which had a 8V71 and a four speed
transmission in it. The 8V71 needs to be replaced
and the transmission is gone. I would like to
get a motor and transmission for it, and get it
going again. I woud like to know if there are any
options I have on the motor and transmission which
I install. I know the 8V71 will go back in, but
is there some other motors that will fit without
alot of modifications. I would also like to
install a 10 speed transmission or maybe and
automatic Allison. Whats the best way for me to
go if you were in my shoes? |
Fred B. Batie (Fred) (216.231.138.81)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 15, 2002 - 11:02 pm: | |
I have repowere my bus which had a 8v71 and 4 sp manula with a 8v92TA and 4 speed allison. I tell you if I had it to do over again I would put a fresh 8V71 back in with the allison automatic. No mount to change , No exhaust to change. No bigger radiator. No new fan and clutches. I think you will find if you ask around that the 8V71 is one of the best GM v motors. I would stick with it>
fred |
jmaxwell (66.42.92.55)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 15, 2002 - 11:58 pm: | |
I would agree w/Fred that it would be much easier to just put the 8v71 back in, but I would 'discuss' that it is better than an 8v92. Personally, I would look for a 4 cycle. There are a lot of very good 2-3 yr old truck take-outs on the market available at almost any truck wrecking yard (seems as though truckers are increasingly having problems keeping them on the road. I know a guy currently putting a 3 yr old DD S60 and Fuller 10spd semi-auto into a Prevo Champion that he bought for 11K; less than 150k miles on it. Go to any truckstop and pick up some of the buy & sell papers, you'll find lots of sources for very good used engines and trans out of wrecks. But, a lot of work, including extending the back of the bus 22". |
RJ Long (24.127.8.58)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 16, 2002 - 12:41 am: | |
Jay -
IMHO - B4 you start this project, you've got to ask youself "is it worth it to get this coach running?"
MC-7s have virtually NO resale value in today's market, and for the cost of installing a full powertrain, you can pick up a complete running coach. Additionally, the drop-center aisle presents interesting challenges to the converter, which is a consideration.
With that said, I'd recommend an 8V71 /HT740 Allison combination.
Most of the inline six cylinder truck motors (Cummins, DDA S60s) are too long to fit w/o major body reconfiguration.
10-spd RoadRangers are pretty wide, and some folk have had to modify the cradle to make them fit. You'll also have to deal with a "backwards" shift pattern. And do you really want to go thru seven gears just to get to 35 mph??
Food for thought, anyway. . .
RJ
PD4106-2784
Fresno CA |
Mark Radius (24.247.233.200)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 16, 2002 - 9:12 am: | |
RJ has a good point, Jay. For the same money you could pick up a newer MC-9 with a pretty fresh engine and transmission in it. Perhaps even one of those NJ MC-9's with a newly rebuilt engine and transmission. Either way, the 8v-71/HT740 combination is pretty bulletproof and relatively easy to maintain.
FWIW... MR |
degojoe (152.163.194.203)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 16, 2002 - 11:58 am: | |
just happen to have an 8v71 w/ allison good running condition if you aqre interested |
Jim Alexander (63.42.72.61)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 17, 2002 - 5:59 pm: | |
Degojoe (152.163.194.203)
Would like to know more on your 8V71 w/allison.
jrgold@sunnyfl.net |
realty4s@bellsouth.net (216.78.35.38)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 17, 2002 - 10:57 pm: | |
CAN YOU E-MAIL ME ABOUT YOUR 8V71 W/ALLISON OR
CALL ME AT 770 843 9999. JAY |
evolution custom coach (Mcibus2002) (63.188.38.73)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, April 19, 2002 - 2:08 pm: | |
6v92 8v92 |