M108 from gas to multi

[sermis]

What is involved in changing the motor in a M108 from a gasser to a multifuel?
Are they a direct swap?

 

[Recovry4x4]

Can't be done Steve. LOL
http://www.steelsoldiers.com/index.php?name=PNphpBB2&file=viewtopic&t=4163

 

[Barrman]

Yeah, you don't have enough parts sitting around.

 

[Westech]

yeah looks like you have to be a real nut job to try and switch the engines

 

[nattieleather]

How much time and how much money do you have. Anything can be done if you have plenty of both.

I'm confused are you taking a GMC and wanting to put the M35 multifuel in it or are you talking about the conversion like recovery did? Because if it is a GMC you also have the automatic transmission to talk about.

You did post this in the GMC forum so you can see my confussion....

 

[Recovry4x4]

He wants to convert an M108 just as I did. In reality, it takes time but not too much work. Almost no fabrication was necessary. Having a parts truck on hand is a blessing.

 

[Stretch44875]

Come to my place, and convert mine, yours will go much easier after doing one!

 

[gringeltaube]

Wish I could lend you a hand....Done the gasser to MF conversion three times now, with no access to A2 parts...! (and no big money either… but prolly a bit more time and patience, yes... )
That means: fabricating the pass. side rear engine support bracket, create custom front engine mounts, cutting/modifying front cross-member and radiator support, switch positions btw. filler neck and inlet port to be able to use a new HD gasser radiator (only one case), modifying dash panel to accept the 2"-wider MF instrument panel, etc.

G.

 

[Barrman]

Joe,
This is a Duece wrecker based off a REO truck.

 

[tmbrwolf]

If you have a parts truck I would think it could be done easily! Remember many duece's were converted from gas to multifuel by the military, I've had several in the motor pool while on actiive duty.

 

[5_TON_TOMATOE]

Would the multi bolt into the 5 ton, or should I look for something with more poop? Anyone transplant a 3208 cat in one?

 

[Offroadfabworks]

5 ton tomatoe the M62 can take the LDS-multi, MACK, probly the 250 cummins. im looking for a "donor" just incase the ole gasser ever gives up.

 

[Barrman]

Tom, Spicer gear, put one of the CAT engines in his M35. It is tight, but it fits and drives great. Figure 34" between the frame rails. If it will fit that way, just about anything else can be made to fit.

 

[tmbrwolf]

I think a 250 Cummins in an M62 wouldn't fit (too long), but as with the 2 1/2 ton many 5 tons were converted to multifuel buy the military, easiest way is to get a doner parts truck and swap over the components.

 

[clinto]

250 Cummins won't fit in the M39 series trucks, has to be an 809 series to work.



Also, it appears Kenny isn't the only one with an M108A2..........

http://www.lonestar-mvpa.org/member_vehicles/member_vehs_Vietnam.htm

http://www.lonestar-mvpa.org/images/membervehs/m_mont01.JPG

Can anyone from Texas tell us about this truck?

 

[nattieleather]

Yep...the 800 serries 5 tons have a longer nose to allow for the cummins to fit. As I understand it the multifuel in the 5 ton is the same as the one in the 2.5 tons except that the 5 ton has the oil pan reversed and a bigger turbo, plus I believe either the IP is bigger or has been turned up allowing for more power in the 5 ton.

 

[Recovry4x4]

I can tell you about it Clinto, the oil tank and tool boxes are missing. I have that pic in my file but never contacted the owner.