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Author Topic: Repower pix first trip out  (Read 3410 times)
mikelutestanski
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« on: July 07, 2008, 06:22:04 PM »

Hello:   
    Finally got the bus out and about  running the new (to me) motor and  tranny  1st 75 mile trip and visit to the truck stop(shocker that was) today .   
    The new rig is a Cummins L10 with a B400R tranny with 6 speeds.  The rear end was changed to 4.625 (which was original to the MCI 7 when they tried the Allison 70 6 speed tranny.  The R is retarder  which works well .  Have an optional foot switch for that .
     The whole package is 84 inches long  with the retarder and another inch or so for the #20 hose fittings on the back.
   SO I reworked a cradle to put the front mount 5 inches toward the rear of the bus  and the pulley is right where the old pulley was located.
    The cradle has side plates  that bolt into the frame rails at the rear . I also had to cut part of the tag center section out and replaced it with a .5 inch steel plate  . This allows enough  room to change the hose fittings on the back of the tranny if required.  The air cleaner system from the original transit bus was modified to fit into the 7  I had to make up a new air box that transistioned the air from the original opening to the top of the new filter box inlet.
    I completely reworked the cooling lines because the engine moving toward the back made it impossible to use the lines  coming down the side in the rear  so the new lines go across to the back  on top   and tee down into the tranny cooler  on the left side rear  behind the turbo (looking from the rear of the bus).
        So enough  of that   here are some pix.
              I have more pix if anyone is interested in a detail  let me know   happy bussin   Mike
     
« Last Edit: July 07, 2008, 06:28:59 PM by mikelutestanski » Logged

Mike Lutestanski   Dunnellon Florida
  1972 MCI 7
  L10 Cummins  B400R  4.625R
mikelutestanski
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« Reply #1 on: July 07, 2008, 06:23:52 PM »

hello   only one pix went so here ore more..   mike
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Mike Lutestanski   Dunnellon Florida
  1972 MCI 7
  L10 Cummins  B400R  4.625R
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« Reply #2 on: July 07, 2008, 06:24:43 PM »

and more
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Mike Lutestanski   Dunnellon Florida
  1972 MCI 7
  L10 Cummins  B400R  4.625R
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« Reply #3 on: July 07, 2008, 06:27:02 PM »

And  one more    mike
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Mike Lutestanski   Dunnellon Florida
  1972 MCI 7
  L10 Cummins  B400R  4.625R
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« Reply #4 on: July 07, 2008, 06:34:22 PM »

very nice work !   Nice job.
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6V71  V730 4:10
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« Reply #5 on: July 07, 2008, 06:35:36 PM »

Looks way cool, and so clean.  What was the performance like?
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mikelutestanski
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« Reply #6 on: July 07, 2008, 07:02:53 PM »

Hello    Not bad but remember it only has 270HP   so the top end is light.   but I don't go 80 anymore.
          I dont know enough yet to make a comparison; certainly in the lower gears it seems to be fine.  Not many hills in Florida  so I need to get out and about.     
     So far  runs about 10 to 12 pounds of boost  around 1500 to 1700 RPMs   around 55 to 65 MPH
           turbo temp is 900  . Outside temp was 90  and I run a dash air AC system off the blower pulley. bus is about 36000 lbs.
       Regards  and happy bussin  Mike
   
     
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Mike Lutestanski   Dunnellon Florida
  1972 MCI 7
  L10 Cummins  B400R  4.625R
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« Reply #7 on: July 08, 2008, 02:08:37 AM »

Mike, that is one nice and neat clean looking installation well done!
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skipn
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« Reply #8 on: July 08, 2008, 06:42:24 AM »


 Mike,

    Looks great....

   Couple of questions?

     1. In the third picture on the left side looks like the ends of 2 yellow cylinders....What are they?
     2. Do you have your valve cover vent routed back to the oil pan?

   Again enjoy the road........quietly sneaking up on those DD's Smiley

 Skip
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mikelutestanski
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« Reply #9 on: July 08, 2008, 01:14:50 PM »

Hello Skip;
   The yellow cylinders are an air compressor; 120Volt that is good for nail guns etc. In this case it is a spare in case of problems. Would probably get me home in case of problems  but with the Cummins  that may be questionable because the fuel pump is mounted tandem to the air compressor.
   The vent for the top of the engine is on the side by the fuel pump and vents to the ground.  The line on top going to the alternator I believe is a vent / oil return.  THe alternator has a large hose on the bottom for oil return.  On the other bus that top line fed into the oil fill pipe.  This engine came from a new flyer Marta Atlanta  and I changed the oil fill from the side to the rear/front .  I changed to the T drive pan but probably could have used the double pan.  Clearance is greater than I thought.   anyway  too late for that .
   Hope this answers your questions?
       Regards  and happy Bussin    Mike 
     
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Mike Lutestanski   Dunnellon Florida
  1972 MCI 7
  L10 Cummins  B400R  4.625R
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« Reply #10 on: July 08, 2008, 01:32:13 PM »

Mike,
    Congratulations!!  Glad to see you got it on the road.  Come down for a visit sometime.  Jack
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« Reply #11 on: July 08, 2008, 01:37:27 PM »

Great looking installation, Mike. Cliff and I will have to get over your way this winter and take a good look at it first hand. I DO admire a craftsman.

Bob
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« Reply #12 on: July 08, 2008, 02:16:57 PM »

Now that is one very cool professional installation!  Also the photographs are great.  Thank you for the great post.  Smiley Smiley Smiley
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Busted Knuckle
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« Reply #13 on: July 08, 2008, 02:26:32 PM »

As I said while you were working on it, AWESOME! Great job, and glad to see that it turned out so good. Grin  BK  Grin
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Busted Knuckle aka Bryce Gaston
KY Lakeside Travel's Busted Knuckle Garage
Huntingdon, TN 12 minutes N of I-40 @ exit 108
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« Reply #14 on: July 08, 2008, 07:16:46 PM »

Mike, I like. Looks good.  Tom Y
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