JDemaris??

Hey,
Does your B275 have a diesel motor? If so, does it have a preheat chamber or is it direct injection?

Dave

They came in gas and diesel versions. Gas is the BC-144 engine and diesel is the BD-144 engine.

The diesel has indirect injection with precombustion chambers and slow-heat glow plugs. Based on the Ricardo Comet II system, I believe.

Early B-275 diesels have in-line CAV pumps with air governors, and later ones have CAV rotary pumps with centrifugal governors.

Do you know the advantages/disadvantages of the 2 (direct and indirect injection)?

Reason I'm asking is I need about 10 more HP but really like the tractor I have now because it fits everywhere I need it. I can get the same series with a 4cyl and 12 more HP butthe "experts" I talk to here say to stay away from the indirect injection but can't/won't say why. My 3cyl is indirect and I have no problem with it. Is yours gas or diesel?

Dave

I have gas and diesel versions.

There is no overall advantage to direct or indirect injection. They both have plusses and minuses. For bigger engines, DI tends to be more efficient. With low power apps, both can work well.

In-direct injection is still popular in smaller engines and can be very efficient. Especially in generator sets. But, in-direct injection requires glow-plugs and does not give instant starting. Also, there is more heat-loss to the coolant when the engines get big. So, big IDI engines need bigger radiators.

Direct injection has less heat loss to the coolant, can give instant starting (no glow plugs needed). Also tends to have a lower mechanical compression ratio and handles turbo-charging better then IDI engines. Most new big diesels are now direct injected.

I wouldn't stay away from either version. All depends on what make and what it's in.

My Ford F-250 truck with a turbo 7.3 is in-direct injected and has seen a lot of heavy use and many miles with no problems. Same can be said for my Dodge with the direct-injected Cummins 5.9. I like the Dodge better, but that's because of the super-long stroke and high boost.

I also have several in-direct injected Isuzu trucks, also fine. Also two little Chevy cars with the IDI Isuzu engines.

Like I said, depends on what it's used for. If a high-power, turbocharged, bigger unit, I'd prefer direct.

Thanks! Maybe I'll look that direction then cause I know just how these little tractors handle and I have all service and parts manuals for this series also. In this case it's a DD-148 motor.

Thanks, Dave

I'd be more concerned about the build-quality of engine, parts availability, etc. than I would in regard to direct or in-direct injected.

OK, some of these folks have a tendency to call anything they don't have junk. I can drop about a thousand bucks off the burden on the piggy bank by finding one of these (and they are only a couple years older).

Thanks again.

Dave

Hey! Do you have smarts on GM 6.5 turbodiesel? I have one on a one-ton tow truck and it is a 'runaway'. Started gradually having less and less throttle response and now is basically an off-on switch.
Also the engine revs to 2000rpm on startup.
Been on the computer...no dice.
I am looking at about $850 for a rebuilt Roosa-Master and a "PMD".
Comments? What the heck does a pmd do??

Thanks in advance, Brad

I don't run any, nor do I want any 6.5s after 1993. GM and Roosamaster/Stanadyne had many problems with the pump-drivers and it took them over 5 years to figure it out properly and finally fix.
1993 and older are 100% mechanical and don't have those issues.

I suggest somebody who can check the PMD and maybe, just sell you the remote-mount pump driver - instead of replacing the entire pump (like most dealers do) is the best way to go.

Thanks for the info. This truck is a '95. I have heard of a heat issue with the pmd but always thought they were matched with a pump.
With a remote pmd will it be a plug in or will I have to chase an adapter??
Also heard about an adapter to put a cummins 6-cyl into the chev truck.
Brad

There are kits to mount the driver in a different location where it will run cooler.

As to the Cummins in the Chevy truck? Yeah, there are bolt-in adapters that were made by Cummins for repower jobs - but they're not cheap.
Cummins made them for GM transmission bolt patterns and Ford. They were mostly used to repower bread-vans with the four-cylinder Cummins 4BT, but also work with the 6 banger. You're talking about a lot of work and money. It would be cheaper to just improve the 6.5, or buy a Dodge with a Cummins already in it, etc. Just a good Cummins 5.9 by itself often sells $1500-$3000, and same for the four-cylinder 3.9 liter turbo. I'd like to get a 3.9 turbo,but never found one yet that was cheap enough. The Cummins 3.9 turbo makes the same power and torque as a non-turbo 6.5, but gets quite a bit better fuel mileage. When put into a 1/2 ton pickup, and geared right, it can get around 25-26 MPG which is pretty amazing.

Outfit in Denver currently will repower your 6.0 ford with a Cummins and put a allison trans behind it. Price close to 20K.
Neighbor has one, both engine and tranny were out of his 2004 F 250, only offer 6000 on trade so 20k wasn't to bad for a near new truck.

(quoted from post at 20:51:13 10/21/10) Thanks for the info. This truck is a '95. I have heard of a heat issue with the pmd but always thought they were matched with a pump.
With a remote pmd will it be a plug in or will I have to chase an adapter??

Click to expand...

remote mounted pmd's can be purchased from companies on-line. I bought one from Heath Diesel several yrs ago. It was mounted on a large heat sink and came with a 5-6 ft line and plugged right into my wiring on inj pump. My experience on a bad pmd was no engine run or run/die,run/die not speed up to high rpm's. I think the governor is out in inj pump on your truck.

IMHO GM's idea of mounting a heat sensitive device under a hood and expect it to stay cool in Summer temps is crazy.