Page 2 of 8 FirstFirst 12345 ... LastLast
Results 11 to 20 of 75
  1. #11
    Gold Member Katahdin's Avatar
    Join Date
    Dec 2010
    Posts
    454
    Location
    Scarborough, ME
    Tractor
    Yanmar LX4500, Toro z420

    Default Re: What motor lasts longer

    I was trying to install the thought that if you run a gas engine at the same design rpms, stroke, etc of a diesel it may last a lot longer than the perception most people have.

    Please define "same amount of work."

    I'm not biased either way, I have a diesel engine, gas engines, and a multifuel engine that will run on gas or diesel. I just know that the characteristics of each are very different and I need an all-things-equal comparison criteria so I can put my head around it.

  2. #12
    Elite Member Baby Grand's Avatar
    Join Date
    Nov 2007
    Posts
    3,284
    Location
    Windsor, CT.
    Tractor
    L3240GST, B2320HST, B5100D & G5200H

    Default Re: What motor lasts longer

    Quote Originally Posted by murphy1244 View Post
    Everything being equal what motor will last the longest, Diesel or gas???
    If displacement & task to be done are equal, then diesel.
    There's a reason class 1 & 2 trucks are almost all diesel.
    I had the misfortune to drive a gas sheetrock truck many years ago.
    20 speed gearbox and no 'nads at all.
    It's theme song was "I Love a Parade".
    Had to flog the daylights out of it just to crest a gentle hill in low range.
    Similar diesel truck we had would almost idle over the same hill in road gear.
    That's the problem with trouble.
    It always starts out as such fun."
    - Randall Brown

  3. #13
    ATP
    ATP is offline
    Bronze Member
    Join Date
    Nov 2012
    Posts
    79
    Location
    Land Between the Lakes
    Tractor
    John Deere 3038e

    Default Re: What motor lasts longer

    We had an old gleaner combine f model that had a 262 gas motor...in line 6cyl that ran forever.... never the first issue.....
    and 4 diesel tractors that never gave us a engine related problem...
    usually... a gas motor works better for varying rpm applications... and the diesels shine at constant rpm apps..(in the field)...

    and usually the diesel is more effecient at a given work load...


    John Deere 3038e
    Kentucky

  4. #14
    Super Star Member murphy1244's Avatar
    Join Date
    Nov 2011
    Posts
    15,844
    Location
    Ohio
    Tractor
    Kioti DK 40-Massey ferguson 135-Ventrac 4500 Diesel

    Default Re: What motor lasts longer

    Quote Originally Posted by Katahdin View Post
    Define equal. If stroke, rpm, compression, etc are the same then the characteristics that make a diesel engine last longer no longer give it an edge.....likewise, ramp up a 3000rpm diesel engine up to 6500rpm, or whatever the average small block gas engine runs at, and watch how well the diesel holds together, just don't stand too close!
    My gosh we have too many lawyers on this thread. Let me explain equal. As in proper maintenance as per manual. Yea lets run the gas engine the same compression as a diesel.
    Murph ------------

  5. #15
    Veteran Member
    Join Date
    Dec 2009
    Posts
    1,808
    Location
    S. W. Virginia
    Tractor
    Kubota B3200, Ford NAA, IH 454D, Case 1845C

    Default Re: What motor lasts longer

    While generally a diesel will last longer, here are a few things that will increase the longevity of both (things that are being lost in a lot of today's engines):

    -bigger displacement for given hp
    -bigger bore/shorter stroke
    -lower rpm
    -inline vs V
    -greater oil and cooling capacity
    -naturally aspirated
    Kubota B3200
    Ford NAA Jubilee
    International 454D
    Case 1845C skid steer
    JD 265

  6. #16
    Epic Contributor Soundguy's Avatar
    Join Date
    Mar 2002
    Posts
    46,372
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: What motor lasts longer

    Quote Originally Posted by Monster5601 View Post
    Equal would be the engine doing the same amount of work.

    Why you suggested taking a diesel past its design RPM is mystery to me and does not offer a comparison.
    i agree.. and i don't see too many diesel with a 6.5:1 compression ratio either.. so again.. no comparison.

    I have plenty of vintage gassers at home.. but I also would have to bet on diesels.

    the diesel in my 99 f350 is doing alot better than the gasser in my 2000 gmc yukon or the 98 dodge ram i sold.. and all were at or nearing 200k.. actually my 7.3psd has more miles than the other 2...

  7. #17
    Elite Member
    Join Date
    Dec 2003
    Posts
    3,960
    Location
    NC
    Tractor
    Kubota Grand L3830

    Default Re: What motor lasts longer

    Quote Originally Posted by murphy1244 View Post
    My gosh we have too many lawyers on this thread. Let me explain equal. As in proper maintenance as per manual. Yea lets run the gas engine the same compression as a diesel.
    That is a good answer "murphy1244" We can't find gas that will not spark knock in gas engines running the low compression ratio of today. Increase the compression ratio to 22:1 fill the tank with that wonderfull ethanol blend and tow to the front yard for good "Yard Art" that used to be a motor vehicle and the gasser will last for years and years.

  8. #18
    Super Star Member murphy1244's Avatar
    Join Date
    Nov 2011
    Posts
    15,844
    Location
    Ohio
    Tractor
    Kioti DK 40-Massey ferguson 135-Ventrac 4500 Diesel

    Default Re: What motor lasts longer

    Quote Originally Posted by Gator6x4 View Post
    That is a good answer "murphy1244" We can't find gas that will not spark knock in gas engines running the low compression ratio of today. Increase the compression ratio to 22:1 fill the tank with that wonderfull ethanol blend and tow to the front yard for good "Yard Art" that used to be a motor vehicle and the gasser will last for years and years.
    ? Did you mean diesel?
    Murph ------------

  9. #19
    Gold Member Katahdin's Avatar
    Join Date
    Dec 2010
    Posts
    454
    Location
    Scarborough, ME
    Tractor
    Yanmar LX4500, Toro z420

    Default Re: What motor lasts longer

    Thanks for clarifying the comparison criteria. Yes, I would agree a diesel typically lasts longer then a gasoline engine per intended applications. The diesel engine has fewer firing cycles and rotations in a given timeframe, so of course it would last longer.

    However, I have a 22:1 compression ignition engine that will run on today's gasoline and its 1960s technology. Would love to see a modern production version of it if the EPA allowed.

  10. #20
    Elite Member
    Join Date
    Aug 2004
    Posts
    3,119
    Location
    North of Mtl,Que,Can (Ste Adele)
    Tractor
    MT180D

    Default Re: What motor lasts longer

    Shucks, just look at the mileage they get on municipal buses and hi-way rigs! and also note that they do oil changes at unheard of miles.
    It seems that oil analysis is a big key to mileage (and other maintenance).
    Shucks I have heard of numbers like 200, 250,000 miles and those rigs and buses do shift gears a lot.
    But then I gather that the best overall engine is propane powered as it is the cleanest running fuel.

Page 2 of 8 FirstFirst 12345 ... LastLast

Similar Threads

  1. 0% was but is no longer truly 0%
    By JOHNTHOMAS in forum Kubota Buying/Pricing
    Replies: 29
    Last Post: 04-04-2011, 12:26 PM
  2. Not much longer.
    By Thomas in forum Related Topics
    Replies: 18
    Last Post: 10-16-2009, 08:09 AM
  3. Longer Top Link or Longer 3pt Tractor Bracket
    By stevenf in forum Owning/Operating
    Replies: 8
    Last Post: 06-26-2006, 08:54 AM
  4. Replacing Drillpress AC motor with DC motor?
    By VinnieNC in forum Related Topics
    Replies: 13
    Last Post: 05-18-2006, 09:29 PM
  5. Not much longer.
    By Thomas in forum Related Topics
    Replies: 6
    Last Post: 07-30-2000, 10:32 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2013 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.