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PNachtwey (Electrical)25 Aug 22 18:30 The problem I have with the books is that they will do anything to avoid using electronic control. Peter - this made me smile! Certainly we have all had to deal with people that desperately cling to their paradigms! Good luck in your retirement! ISZ

Not to mention you would always want a return spring in case the system fails. ISZ

There is also the assumption that there is no air in the oil, but that is rarely the case. How much air is very difficult to predict as it depends on the oil, temperature, amount of time it has to let air release, etc. ISZ

I cant see using DC unless there are other DC components on the machine. And like John said you should be able to trace the wires back to the control panel. Looking at some DO3/DO5 catalogs it is likely that they are 110-120vac. ISZ

usually can find interchangable filters from multiple manufacturers. Cheap. Difficult to inspect for debris. Low cost filters are of dubious quality. Leakage highly susceptible to installation torque error. Can get filters cross threaded during install (this burned up one of our big tractors...

My initial thought is that you would use the same cam for gas or propane, assuming the same CR. My reasoning is that with either fuel you are air limited, not fuel. I am also assuming that you would have roughly the same combustion efficiency and thus about the same volume of exhaust gases. As...

I am not that familiar with JD tractors. It appears that the 9220, 9320 and 9420 (at least) share that same wheel base. That suggests that they used the same transmission and axles but it is tough to tell unless you can get a good look at a parts book. Often times the axles are the same family...

I have not seen such a switch. The closest I have seen is the float type with externally adjustable contacts sold by Murphy. I liked these because I could fine tune the trip point so that a failure would only result in a little bit of oil loss. To further elaborate on Bud's idea, I would make...

Thanks for the answer Tony. I am glad to get reliable info from someone that knows, not someone who heard from someone..... Have a good '07. IceStationZebra

First - valve actuation (SOHC, DOHC, cam-in-block, etc) has no bearing on the matter directly. Second - I doubt that you will find any measurable difference with port fuel injection UNLESS you change the throttle area or are correcting for some really bad plenum inlet geometries. (i.e. a 90deg...

I'm can't even guess what you are trying to do. Three decades is a lot of time, especially when the manufacturers were changing things every two years! Then add in wood and steel cabins, etc. You would probably be better off stating what you are looking for.

On my last project we "created" a standard termination resistor using a deutsch DTM connector, a resistor connected to two pins, and a bit of shrink tubing. Crude, but it worked well.

I agree with Fabrico - but the only caviat is that if something is cracked/leaking and they use the engine they could ruin a lot of good parts. If it is an ocean going vessle it is probably just good insurance to tear it appart for a proper inspection. And than if it is bad they can reuse most...

A little off topic, but I saw an air compressor that was made out of a surplus WWII jeep engine. The engine was reworked with a new head and manifolds so that the inner two cylinders ran on gas and the outer two pumped air. The pumping cylinders were equipped with reed valves and a seperate...

Thanks for the clarification, and it seems you have your answer. Related to this subject - how does changing the fuel rail pressure, say +25%, change the atomization characteristics? I am curious because some people do this to get higher fuel rates out of their existing injectors. My guess is...

You did not mention if this is indirect or direct injection - but I will assume direct. The piston design has a lot to do with what injector design will work best, as it is the combustion chamber. mexican hat vs. toroidal. You also get into the amount of swirl present, steady state vs variable...

CosRush - I don't think that you can do much worse than the production pretzel of on intake you have! Pat's recommendation mirrors mine above. You already have a split plenum - just make a new cover for it and give it a try. You can always unbolt it for fine tuning. I also like Pat's idea of...

CosRush, the Isuzu manifold has some of the same design issues that we have been discussing. The middle two runners are a straight shot for the incoming air and are shorter than the outers. The outer two also have more aggressive bends. The plenum is not very big, so it won't help high RPM...

Sorry everyone, my bad. I obviously misread generator as dyno - too late at night :) As far as bearing damage goes, as long as the engine always has a load on it and it doesn't oscillate too fast I don't think it will harm the bearings. In general a slowly varying load is better for components...

What good information are you going to get from a dyno that oscillates enough that it kills your bearings?