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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: jacc on February 26, 2015, 09:31:33 PM

Title: Looking for a Detroit 8V71 with Allison Automatic Transmission
Post by: jacc on February 26, 2015, 09:31:33 PM
I blew the engine (8V71) on my 1975 MC8 Bus Conversion.  Am looking for a rebuilt one or a good running one to replace it.  The bus is located in Bakersfield CA.  Hopefully I can find one in that area, but I am facing a deadline and am willing to have it shipped.  Would appreciate any info on where I can find one from  a source I can trust, as I live a long ways from Bakersfield.  We have used our bus for 16 years. It is a great conversion and in beautiful shape after all these years.  We want to keep it.  I am an evangelist and live in it during revivals in various churches (www.revelation-now.com (http://www.revelation-now.com)).  Not many problems over that time.  Time is of the essence since we have a revival booked in the Rapid City SD area in April.  Would definitely any help.
Thank you
Jac
Title: Re: Looking for a Detroit 8V71 with Allison Automatic Transmission
Post by: luvrbus on February 27, 2015, 04:50:48 AM
Delaney and Ahlf is your best bet,Fairchild closed his shop there
Title: Re: Looking for a Detroit 8V71 with Allison Automatic Transmission
Post by: Brett G on February 27, 2015, 05:52:35 AM
http://minneapolis.craigslist.org/hnp/pts/4889103631.html (http://minneapolis.craigslist.org/hnp/pts/4889103631.html)

https://www.youtube.com/watch?v=Wo7HnJNRhdM (https://www.youtube.com/watch?v=Wo7HnJNRhdM)
Title: Re: Looking for a Detroit 8V71 with Allison Automatic Transmission
Post by: Oonrahnjay on February 27, 2015, 06:06:02 AM
    If you travel a lot, have you asked yourself whether an 8v92ta would be a better swap?  It would be a little more fuel hungry but it would give you a lot better performance, particularly climbing hills, etc.  You might also think about a "World" transmission (if you're going to change), with an easy add-on throttle modulator, you could go to an Allison B400.  6 speeds and lock up to get your fuel mileage back.
Title: Re: Looking for a Detroit 8V71 with Allison Automatic Transmission
Post by: eagle19952 on February 27, 2015, 07:22:25 AM
Quote from: Oonrahnjay on February 27, 2015, 06:06:02 AM
    If you travel a lot, have you asked yourself whether an 8v92ta would be a better swap?  It would be a little more fuel hungry but it would give you a lot better performance, particularly climbing hills, etc.  You might also think about a "World" transmission (if you're going to change), with an easy add-on throttle modulator, you could go to an Allison B400.  6 speeds and lock up to get your fuel mileage back.

it would also complicate your cooling ... in most cases...
Title: Re: Looking for a Detroit 8V71 with Allison Automatic Transmission
Post by: Oonrahnjay on February 27, 2015, 07:49:38 AM
Quote from: eagle19952 on February 27, 2015, 07:22:25 AM
it would also complicate your cooling ... in most cases...

     And electrical stuff, and shifter, etc. -- but I'd do it, in spite of the fact that it would take a good bit of modifications.
Title: Re: Looking for a Detroit 8V71 with Allison Automatic Transmission
Post by: luvrbus on February 27, 2015, 09:51:36 AM
He shouldn't have much trouble finding a 6V92TA on a MCI cradle they have about the same heat rejection as the 8V71 N/A with more power and better fuel mileage than a 8v71.The 8v92 is a major ordeal to stuff into a MCI 8
Title: Re: Looking for a Detroit 8V71 with Allison Automatic Transmission
Post by: eagle19952 on February 27, 2015, 10:13:02 AM
Quote from: luvrbus on February 27, 2015, 09:51:36 AM
He shouldn't have much trouble finding a 6V92TA on a MCI cradle they have about the same heat rejection as the 8V71 N/A with more power and better fuel mileage than a 8v71.The 8v92 is a major ordeal to stuff into a MCI 8

:) :) :) :) :) :)
Title: Re: Looking for a Detroit 8V71 with Allison Automatic Transmission
Post by: Danr on February 27, 2015, 12:16:48 PM
Quote from: luvrbus on February 27, 2015, 09:51:36 AM
He shouldn't have much trouble finding a 6V92TA on a MCI cradle they have about the same heat rejection as the 8V71 N/A with more power and better fuel mileage than a 8v71.The 8v92 is a major ordeal to stuff into a MCI 8

I have a 6v92TA on a MCI cradle still in a mc8. for $3500.00 he can have the hole bus. it runs great. And I have all manuals with it .

Danr

cdroggen45@hotmail.com I am in Pahrump, NV
Title: Re: Looking for a Detroit 8V71 with Allison Automatic Transmission
Post by: jacc on February 27, 2015, 06:46:20 PM
Thanks for all the input. Very helpful.  I have a couple of possible options now.  But appreciate any more thoughts. 
Title: Re: Looking for a Detroit 8V71 with Allison Automatic Transmission
Post by: Lin on February 28, 2015, 12:12:49 PM
Another option would be a turbo 8v71 or putting a smoke turbo on a plain one before install.