Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Farmall & IHC Tractors Discussion Forum
:

change over from gas to diesel

Welcome Guest, Log in or Register
Author 
ole farmall

02-14-2007 17:12:55




Report to Moderator

I dont know if this question is stupid or not..but i was just wondering if you could convert a gas motor on a M to a diesel running motor...i know you would probly have to use a diff head..and put glow plugs in..also all the fuel pump stuff...i think it would be cool it some one made a M diesel that was a gas...but didint make the start up on gas..so it would be a true diesel..this could be made with some custom parts right??

[Log in to Reply]   [No Email]
Jason Simmerman

02-14-2007 20:30:51




Report to Moderator
 Re: change over from gas to diesel in reply to ole farmall, 02-14-2007 17:12:55  
I honestly think it would be easier if you wanted a direct start diesel to convert the existing gas/diesel motor to a direct start. You would have to add glow plugs and figure out what to do about the distributor ect ect, but that would be by far the easier way to go.



[Log in to Reply]  [No Email]
RayP(MI)

02-14-2007 18:26:23




Report to Moderator
 Re: change over from gas to diesel in reply to ole farmall, 02-14-2007 17:12:55  
Ask anyone who owned a Oldsmobile 5.7 diesel engine. They tried to make a diesel out of a gas design. Many,many failures. Suprisingly if they didn't fail, they were pretty dependable!



[Log in to Reply]  [No Email]
MN Scott

02-14-2007 18:22:38




Report to Moderator
 Re: change over from gas to diesel in reply to ole farmall, 02-14-2007 17:12:55  
IH did it with the D282 6 cylinder diesel. The crankshaft in a 282 diesel is the same as in a C263 gas. Thats why a D282 has head gasket problems, the gas block does not have enough head bolts per cylinder.



[Log in to Reply]  [No Email]
Owen Aaland

02-15-2007 13:03:38




Report to Moderator
 Re: change over from gas to diesel in reply to MN Scott, 02-14-2007 18:22:38  
Although the crankshafts are dimensionly the same you need to be careful when interchanging them. There are five different shafts used. Early diesel shafts are not regrindable. A couple of the gas shafts will break if used in a diesel. Any shaft can be used in a gas engine.



[Log in to Reply]  [No Email]
Bob M

02-14-2007 18:03:50




Report to Moderator
 Re: change over from gas to diesel in reply to ole farmall, 02-14-2007 17:12:55  
Would indeed be cool. But it's not unlikely it could be made to work. The M gasoline block and crank, while robust, are simply inadequate for the higher stresses of diesel operation.

Just compare a few spec's for M gas and M diesel (MD) engine crankshafts:

Number of main bearings: gas = 3; diesel = 5
Main bearing diameter: gas = 2.80"; diesel = 3.75"
Crankpin diameter: gas = 2.55"; diesel = 3.25"

As you can see the diesel M engine is built MUCH heavier...

---

Incidentally direct electric start diesel M's DO exist in the form of the the British built BMD. But the BMD diesel is also much more heavily constructed than it's gasoline counterparts.

[Log in to Reply]  [No Email]
HAS

02-14-2007 19:16:10




Report to Moderator
 Re: change over from gas to diesel in reply to Bob M, 02-14-2007 18:03:50  
Not to mention the compression ratio difference.



[Log in to Reply]  [No Email]
Steven@AZ

02-14-2007 18:00:32




Report to Moderator
 Re: change over from gas to diesel in reply to ole farmall, 02-14-2007 17:12:55  
Would be easier to convert a diesel to a gas.

The gas engine will never handle the stresses and pressures of compression ignition...

If you want a direct-start diesel in your M retro-fit it with a 4bt Cummins or find one of those Sheppard conversions... or even the 2-71 GM diesel was put in some of them!



[Log in to Reply]  [No Email]
old

02-14-2007 17:56:46




Report to Moderator
 Re: change over from gas to diesel in reply to ole farmall, 02-14-2007 17:12:55  
I agree with Gary, been tried and when done it would blow the bottom right out of them in a heart beat



[Log in to Reply]  [No Email]
Gary in Mozarks

02-14-2007 17:40:04




Report to Moderator
 Re: change over from gas to diesel in reply to ole farmall, 02-14-2007 17:12:55  
The best answer I can give is to compare it to GM. GM tried to made a diesel engine out of a gas (350) and spent millions on the project before producing one of the worst engines they ever built. Just to many things have to be beefed up to make it work. Even though they made it work, the engines failed so fast that most of those cars were reengined within a few years. Better to use an engine designed from the ground up to handle the compression (at least 4 times greater)

[Log in to Reply]  [No Email]
Allan In NE

02-15-2007 02:22:07




Report to Moderator
 Re: change over from gas to diesel in reply to Gary in Mozarks , 02-14-2007 17:40:04  
The only thing wrong with that old 350N was the nut behind the wheel.

I always am a bit amused by the old wives’ tale about the Olds 350 diesel being "converted" from its gasoline counterpart. That's just plain bunk; nothing was "converted". The 350N is/was a totally different engine.

The two engines share the same general overall appearance. I.E. They "look" the same in general configuration, but that's just about as far as it goes.

Parts that can be interchanged from the gas engine to the diesel are as follows:

1. Oil pump body and the oil pump drive shaft. 2. The rod bearing 'inserts' and rod fastening bolts only. 3. Push rods and rockers out of a gasoline engine will indeed “work” in a diesel.

Everything else is diesel specific down to and including the wing nuts on the air cleaner.

Allan

[Log in to Reply]  [No Email]
Gary in Mozarks

02-15-2007 06:05:17




Report to Moderator
 Re: change over from gas to diesel in reply to Allan In NE, 02-15-2007 02:22:07  
Alan, Living in Lansing Michigan at the time, I had a friend who was an engineer on that project. I agree with you in that it was not a "converted" gas engine. But they did start out with the basic blueprint (Spacing, layout) of the gas engine,(as they had tooling for it) By the time they got done beefing up what was needed, there was very little in common with the 350 gas engine anymore, and that was my point. It's not pratical to make a diesel out of a gas engine.

[Log in to Reply]  [No Email]
Allan In NE

02-15-2007 09:08:42




Report to Moderator
 Re: change over from gas to diesel in reply to Gary in Mozarks , 02-15-2007 06:05:17  
Oh Yeah,

I see where you're coming from now.

It's so darned hard to "read between the lines" on this Internet. :>)

Allan



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy