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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: lostagain on September 30, 2015, 06:33:00 AM

Title: What engines fit into a MC5C?
Post by: lostagain on September 30, 2015, 06:33:00 AM
Speaking of re-powering 5Cs lately, does anybody know what engines would fit in a 5C, other than the 6V71 and 6V92?

JC
Title: Re: What engines fit into a MC5C?
Post by: bevans6 on September 30, 2015, 06:38:38 AM
8V-71, 8V-71 T etc, 8V-92, S50 with some work.  I think most of the 6 cylinder four stroke truck engines are too long.  Recall that a 4 stroke engine runs a lot cooler than a 2 stroke, so you can easily contemplate raising the roof of the engine compartment.  If I was doing a repower I would probably look hard at the S50 unless I stumbled on a NOS rebuilt 8V-71T for next to no money.   ;D  I measured, and a S50 will fit.  You'd have to think about how to get the valve cover off, though.

Brian

Title: Re: What engines fit into a MC5C?
Post by: TomC on September 30, 2015, 06:40:31 AM
Either the 6.7 Ford Powerstroke or GMC/Chevrolet 6.6 liter Duramax V-8 would get her down the road since both have ratings in the 800lb/ft torque now. Unfortunately, U.S. has no V-6 Diesels currently being made. The only other way would be to extend the back a couple feet. Good Luck, TomC
Title: Re: What engines fit into a MC5C?
Post by: lostagain on September 30, 2015, 06:44:17 AM
Brian, are you saying that the S50 would fit without raising the blower compartment floor? How about length? In terms of what transmission could be used. I have seen MC7s with the S50, but the engine compartment is bigger than in a 5.

JC
Title: Re: What engines fit into a MC5C?
Post by: luvrbus on September 30, 2015, 06:48:19 AM
A  L10 Cummins will fit, they are not good engines but there is a MCI 5 running around with V555 Cummins I haven't seen in years but it was out there with a turbo  
Title: Re: What engines fit into a MC5C?
Post by: lostagain on September 30, 2015, 06:53:29 AM
The 6.7 Powerstroke is a great engine, in a pick up. I have one and like it. I don't know about it in a bus... Although when you think about it, with a 18000 lb goose neck hooked on to the truck, it is getting close in weight to a bus...

JC
Title: Re: What engines fit into a MC5C?
Post by: luvrbus on September 30, 2015, 07:03:39 AM
They sell low clearance valve covers for 50 series,I removed 1 from a Eagle that had those
Title: Re: What engines fit into a MC5C?
Post by: Boomer on September 30, 2015, 07:17:03 AM
Why reinvent the wheel, just use a 8V71N with A timing and 70 injectors.  With updated rads of course.
Title: Re: What engines fit into a MC5C?
Post by: bevans6 on September 30, 2015, 10:55:48 AM
When I was in SC at one of Kyle's non-rally's there were a bunch of MC-9's with S50's.  I measured carefully, it would fit with about an inch of clearance.  Obviously you can lower it a bit when you fabricate the engine mounts.

Brian
Title: Re: What engines fit into a MC5C?
Post by: TomC on October 01, 2015, 09:10:20 AM
I know that Detroit made an interesting low profile oil pan for the 4-71 (and most likely other models). It had two oil pumps, one in the front and one in the rear with a low pressure cut out valve to allow the oil pump with the most pressure to do the pumping. Worked in high tilt type applications-like dozers, military vehicles, etc. I don't know if the S50 has a low profile oil pan since it has twin counter rotating balancing shafts in the crank case. Good Luck, TomC