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Discussion Starter · #1 ·
Just had my '98 R42 with Cummins and 2200hrs in for some service work and had them put it on dyno to check HP. I have always thought it was kind of gutless. They checked it at 145 HP and adjusted it to 185 that it was supposed to be. He didn't act surprized said they dyno every combine they sell and not at all unusal for them to be low HP from the factory, umm.
 

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I would imagine EVERY one he checks are low!!.....that's because the 185 rating doesn't have any hydraulics or a radiator fan pulling against it...in other words BARE engine HP is 185 (supposed to be). He basically turned it up 40 HP to match an R52 (185 to 225).
 

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Discussion Starter · #3 ·
I do have a question for you concerning adjusting the HP. Does the 42 and 52 have the same pump and injectors? Is HP just a matter of tweaking the pump? Any effects from doing this? Thanks, Dr.
 

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I don't know for sure that the injectors and the pump are the same.....I assume that they probably are in this application. Is HP just a matter of "tweaking" the injection pump??? Not always....depends on the engine. Some engines require different injectors and turbos and in rare cases even different pistons.
 

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Discussion Starter · #5 ·
Yes, you are correct that is what they did. I also have to correct myself. That 145HP was read off the MAIN SHAFT. I believe he said the range on that was 145 to 152HP. So it was actually doing within specs, just at the low end. So the HP is stepped up to equal a 52 and hopefully I won't be hearing the shaft monitors going off like they where in tough beans or pulling a full tank up hill!
 
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