Combines R 62 Horsepower

[Hyper_Harvest_II]

A lot of unknown facts to give an accurate answer to your question. What year of machineIJ The 93' models were rated at 240 hp. and the 94' and later were increased to 260 hp. I assume before having engine dynoed that you checked and changed the obvious such as air filters and fuel filters(Also checking fuel flow from tank to make sure that there is no restrictions). Normally the mainshaft HP is about 15% under rated engine power so if you have a 260 hp. rated engine then you are shy about 10 hp which isn't that much. Did you pull the engine 200 rpm below rated speedIJ This will give you an indication of torque rise and governor response. Does this engine have a waste-gated turbochargerIJ If so you can install a air pressure regulator and hook up to waste-gate actuator and check it for leaks and also for proper setting and movement. We usually set pressure at 26 psi. and attach a dial indicater to check actuater rod movement. No movement at the 26 psi. setting and then .013-.051 movement as pressure is increased to 29 psi. We have had to re-set several waste-gates and also replace some that were leaking. If waste-gate is leaking air externally you will not only lower HP by losing manifold pressure but also you will affect anaroid system in injection pump which will not allow proper fuel delivery. If everything checks out above we also have had some earlier 8.3 Cummins that needed to have the governor re-adjusted to combine specs. instead of tractor specs.(ie;Governor on combine setting should come to life strong and hang where as the tractor setting would give you a wider RPM range of power allowing peak power down in the 1500-1700 rpm range.)Hope this makes sense and helps you determine if you for sure have a power problem. Hyper Harvest II

 

[BFD]

before i got the machine a 97, those were the numbers. complete filter change, guess i was so used to my older 94 TTdeutz powered with a 10 % boost. supposedly set this one @ 10% also when the pump was redone.

 

[NDDan]

So your saying it dynoed at 210hp before you got it. 210hp is within specs but surely none to hot. I can only find record of one mechanical C series that I dynoed. It had 790ft.lbs of torque at 1421RPM (rated speed) which is 214HP. It had 900ft.lbs of torque at approx 1350RPM (2100 engine RPM) which is about 232HP. It had 980ft. lbs. of torque at approx 1300RPM (2000 engine) which is about 240HP. This calculates into 14% torque rise when lugged 100 engine RPM below rated and 24% torque rise when lugged 200 engine RPM below rated. This is factory stock fuel pump and when comparing to dyno specs on Deutz powered R62 I find this: Deutz powered machines generally have approx 5% more power at rated RPM than equally rated mechanical fuel Cummins. Now this is where Hyper mentioned torque at 100RPM below rated. This is important for I have found that Deutz powered machines rarly had more than 10% torque rise at that 1st 100 engine RPM drop below rated where the Cummins had 14%. It really all boils down to how the pump is set. I would like to know what torque is at mainshaft 100 and 200 engine RPM below rated. I think if it were me I would go to pump shop and tell them I want as much torque rise as posible within 100 RPM of rated and give it a little extra fuel when at it. My mechanical fuel Cummins with 214 clutchshaft HP at rated speed was running 25PSI fuel pressure and wastegate started letting out excess boost at 26PSI. I hope some info hear will help you decide what you want to do.