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Author Topic: First good run with my series 50 swap  (Read 3246 times)
hargreaves
1987 MCI 102A3
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« on: July 01, 2012, 08:29:32 PM »

Did a little run with my new series 50 B400 swap.  Went from Vancouver BC to Osoyoos BC . about 250 miles north  through the mountains.( Little golf trip with the boys)  Sorry Clifford but it is a 100% better than  the 6V92 I took out.  The 1150 lbs ft of torque was nice. The hills I was climbing before at 30mph, I was doing 45 with the series 50.  It is a way quieter, you could hardly hear it running compared to the 6V92. Milage was about 1 mile a gallon better, I was hoping it would be more, and the best thing of all was no oil consumption and the back of the bus was clean.Lol. Man what a difference going from the neck jerking 740 to the B400. awesome!  Going to do a longer trip this week and hoping the fuel milage improves as I learn to keep my foot out of it.    Cheers Gerry.



« Last Edit: July 02, 2012, 03:55:20 PM by hargreaves » Logged

now as of Feb 2012 series 50 B400  . Sunshine Coast British Columbia
luvrbus
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« Reply #1 on: July 01, 2012, 08:47:39 PM »

Great it should get you better than 2 mpg fwiw I am not a fan of the 6v92 never have been and never will be lol it should serve you well since you know how to rebuild the balance shafts that's the part I don't like about a series 50 the least bit of wear and they shake the bed sheets of the bed
« Last Edit: July 01, 2012, 08:57:53 PM by luvrbus » Logged

Life is short drink the good wine first
hargreaves
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« Reply #2 on: July 01, 2012, 08:53:35 PM »

Ya Clifford it shifted into 5th at 55mph . I don,t think that old gal has ever seen 85 before. Lol  Pretty scary at that speed .   Cheers Gerry
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now as of Feb 2012 series 50 B400  . Sunshine Coast British Columbia
lostagain
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« Reply #3 on: July 02, 2012, 07:24:12 AM »

Sounds great Gerry! I would like to see it someday. If you ever come by Invermere, BC, stop for a visit.

JC
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JC
Invermere, BC
1977 MC5C, 6V92/HT740
hargreaves
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« Reply #4 on: July 02, 2012, 08:16:46 AM »

sounds great JC , thanks for the invite.   Cheers Gerry
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now as of Feb 2012 series 50 B400  . Sunshine Coast British Columbia
Hard Headed Ken
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1988 Prevost Angola Conversion Repowered With 14L Series 60 & Eaton Ultrashift


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« Reply #5 on: July 02, 2012, 08:33:07 AM »

Do you have pictures of the engine compartmemt ?

Thanks,
Ken
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Link to my engine swap slide show

https://www.youtube.com/watch?v=oxAFFBcoTQI
hargreaves
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« Reply #6 on: July 02, 2012, 08:35:05 AM »

I do Ken , just have to figure uot how to post them. Lol   Cheers Gerry
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now as of Feb 2012 series 50 B400  . Sunshine Coast British Columbia
Gary W
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« Reply #7 on: July 02, 2012, 08:46:21 AM »

Gerry Sounds like a great combo, I met a guy from Merritt that had a102A-3 also with a series 50 . I think it a 740 tranney. If your ever in Vernon drop by.
The Bc Bus Nuts are having a rally in Barkerville on the 13th to 15th of July. If you can make it I can email you the registration.


Gary 
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hargreaves
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« Reply #8 on: July 02, 2012, 08:57:12 AM »

Thanks for the invite Gary . I will be at Green lake the week before but unfortunately have commitments and will be heading south towords Osoyoos.   Hope all goes well at the rally and the weather cooperates  Cheers Gerry
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now as of Feb 2012 series 50 B400  . Sunshine Coast British Columbia
Geoff
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« Reply #9 on: July 02, 2012, 09:53:47 AM »

It doesn't seem fair to compare the two engines if the 6V92 was worn out.  Was it a 6V92TA with 350HP and 1050 foot pounds of torque?  That is what I have and it is smooth, quiet, and doesn't use much oil in it's 60,000 miles or so.  Seven to eight mpg depending on speed and tow car.  All the Series 50 and 60 I have heard are very noisy if you are standing outside the engine compartment, unlike the 92 series.  Did you have a blown muffler with the old engine too?
Your story does not match my experiences, but I'm glad you are happy-- thats what counts.

--Geoff
'92 RTS AZ
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Geoff
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luvrbus
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« Reply #10 on: July 02, 2012, 10:38:39 AM »

yea bet it doesn't idle as smooth as the old 6v92 two stroke  the ones I have been around are shakers on idle 50 or 60 series
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CrabbyMilton
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« Reply #11 on: July 02, 2012, 01:02:31 PM »

That is the sad nature of a 4 cylinder engine. No matter how much power they can put out, they are still not going to be as smooth as a 6 or V8 and especially an old 71 or 92 series. I do hope you like your new engine and you ought to be proud of what you did.
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hargreaves
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« Reply #12 on: July 02, 2012, 02:03:33 PM »

The 6V92 had about 80,000 miles on it. 320 hp recently tuned.  Ya the series 50 rattles a bit at idle but how often are we doing that.  I can tell you that when traveling it is a way quieter in the bedroom than the 92 was.  coupled with the B400 with fifth gear it cruises at 1400rpm at 60 mph compared to the 92 /740 at 1850 rpm.  that's probably the nicest part. If I tried to run the 92 at that speed it would overheat.They don't like lugging.  Don't get me wrong , 71's and 92's were my life, 40 yrs of building and repairing them. I was hesitant in doing the swap, but it was to good of a deal to pass up.  Cheers  Gerry
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now as of Feb 2012 series 50 B400  . Sunshine Coast British Columbia
luvrbus
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« Reply #13 on: July 02, 2012, 02:11:16 PM »

The price you told me Gerry I would have bought 1 also lol and have no use for 1

good luck
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hargreaves
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« Reply #14 on: July 02, 2012, 03:55:47 PM »

the pics are up
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now as of Feb 2012 series 50 B400  . Sunshine Coast British Columbia
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