engine: tuning more HP?

[TSO]

The Massey 1652, 1655, 1660 all use a 3.0L 4cyl Iseki diesel, but produce 52, 55 & 60 HP. Haven't received a real answer from the Massey dealers I've contacted, and no responses in the MF forum, so..........

Anyone know if (and how) the 1652 could be tuned to make 55 or 60 HP?

Thanks in advance.

 

[Johnny g]

I don't have a definite answer but could be camshaft with different lift and or duration or larger valves and or smaller compression chambers to create higher compression ratio.

 

[oldnslo]

Are all of these HP figures taken at the same RPM? Is this engine HP or PTO HP?

 

[TSO]

I don't have specs for the 1660...

But the 1652 & 55 are as follows:

Compression Ration (same): 21.5-1
Bore (both): 97mm
Stroke (both): 100mm
Displacement (both): 180.29cu/in
Rated speed (both): 2500
Max Tq @ 1500 rpm: 1652=128.7 ft/lb, 1655= 134 ft/lb
Max Tq @ 2500 rpm: 1652=109.7 ft/lb, 1655= 117.8 ft/lb
Tq rise: 1652= 17%, 1655= 13%
Engine HP gross @ 2500 rpm: 1652= 52.2, 1655=56.1

Only other difference I can see between the 1652 & 1655 is the wheelbase. 1655 has +1" wheelbase. Not sure why.

Again, I don't have specs on the 1660.

 

[Gary Fowler]

Back during my farming days, HP was turned up by increasing the output of the injection pump. This is only good so far as the naturally aspirated engines can draw in enough air to burn the extra fuel. If you have a turbocharged engine, you can get a bit more power before it again starves for air.

An injection pump overall business should be able to turn your I.P. up to the max needed to produce at least 10 HP more than stock.

I was talking to a Mahindra dealer and their new tractors have an ECU (engine control unit) computer that might do the job just like diesel trucks do by reprogramming the computer controller.

 

[AGRIMAN]

Most small HP differences within the same engine family are done with the injection pump setting (T3) and within the software (T4).

If your tractor is T3, look on the back of the injector pump and you should see a set screw with a tamper proof wire through it. I don't recommend you do it, but turning that screw will add HP. Remember, if you cut that wire, your warranty is gone.

These HP jumps are done by the manufactures for pricing reasons and in MOST cases the tractors are the same. You may want to check and be sure there are no differences in the transmissions and front axles between the models.

 

[wmonroe]

Is the engine turbo charged? My guess is that the injection pump output is increased to give the hp increase. Instead of or in addition to injection pump output changes though there might be a different turbo, waste gate setting, injectors, delivery valves, timing, piston cooling jets, head gasket (to withstand higher boost). Just a few things that might be different but not easily detectable. I'm sure they try to make the engines as standard as possible though to keep production cost down.

 

[TSO]

Is the engine turbo charged? My guess is that the injection pump output is increased to give the hp increase. Instead of or in addition to injection pump output changes though there might be a different turbo, waste gate setting, injectors, delivery valves, timing, piston cooling jets, head gasket (to withstand higher boost). Just a few things that might be different but not easily detectable. I'm sure they try to make the engines as standard as possible though to keep production cost down.

No, those are all naturally aspirated.

 

[jaydee325]

The Massey 1652, 1655, 1660 all use a 3.0L 4cyl Iseki diesel, but produce 52, 55 & 60 HP. Haven't received a real answer from the Massey dealers I've contacted, and no responses in the MF forum, so..........

Anyone know if (and how) the 1652 could be tuned to make 55 or 60 HP?

Thanks in advance.

Sorry TSO, can't provide specific's you ask for. I've also goggled around on the different diesel engines used in CUTs and found scant info.

I can however provide a little historical experience.

I attended Ferris State University's heavy equipment service school back in the late 70's. I still remember my fuel injection professor recommending against "turning up the screw" to make more power in a diesel engine. There was even a fuel injection shop in western Michigan who would not do this. This may have had more to do with emissions requirements though (yes, emissions requirements were just getting started back then!)

I've seen many different engines used in equipment ranging from trucks, to equipment, to motorhomes which all have the same block/bore/stroke with wide differences in power output. But, having the same block/bore/stroke specifications does not mean in all cases that the design of the fuel delivery system is the only difference.

Making more power means more heat. Sometimes a lot of it. So, the higher output engines will have enhanced cooling systems such as oil jet cooling for pistons and larger radiators, heavier duty pistons, and more heat tolerant exhaust valves (just name a few).

My recommendation is to not "hot rod" your Massy for more power.

Looks like you need to upgrade again?:laughing:

 

[TSO]

My recommendation is to not "hot rod" your Massy for more power.

Looks like you need to upgrade again?:laughing:

I wouldn't tune up my 1648... It's a smaller engine, already tuned up from 43 horse in the 1643.

I love this tractor. The size, weight, capabilities... Are excellent for the work I do with it. However, I occasionally run out of HP (mainly while stump grinding). The next step up in HP in THIS tractor is the 1652/55/60, however only the 1652 came with HST, the others were shuttle (or PowerShuttle) only. There's a few used 1652's out there, but I would only consider upgrading if I could bump the HP higher, because in stock form, it's only a 3 PTO HP jump from my 1648, and probably not worth the jump.