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  1. J

    boost

    Boost doesn't make horsepower fuel does. Boost supplies enough air to burn the fuel you put in the engine without smoking and it helps reduce EGT. High boost without additional fuel reduces power. Jim "99 ISB in a motorhone.
  2. J

    camper disapointment

    You only have 175 horsepower at best at the rated rpm. You might not be comfortable at 3000 rpm or more but I can assure you your engine will be. If you saw a horsepower X rpm chart for your engine you would be surprised how little horsepower it actually makes as you start down from 3000. I...
  3. J

    how to flush cooling system

    Be sure and put the correct amount of DCA4 in there for cavatation prevention. Jim
  4. J

    Another AT542 question

    I have been experimenting with several ideas and have not yet got what I want. Jim
  5. J

    Another AT542 question

    I don't want it to stay in 4, I want it to downshift to 3 when the pedal is at 0 throttle without me having to manually shift to 3. I have done some more research and it seems likely what I want it to do can be done. We are leaving for a week trip Thursday to Eastern Washington so any more...
  6. J

    Another AT542 question

    Do any of you have any technical knowlege of how the shifting is controlled on this transmission. Not the manual gear shifting with the shift lever but what controls the downshift from 4-3 when pushing the throttle down. I am curious if that shift signal is electric. If it is I would like to...
  7. J

    Allison AT542 Torque converter

    BD Diesel Performance has one they say has a stall speed 200 rpm lower than stock. I am considering one so I can have a at least partly effective Pac Brake in my motorhome with a ISB Cummins.. They build them in-house. They are located about 40 minutes drive north of me in Abbotsford, BC, Canada.
  8. J

    installing tranny coolers and gauge

    You will get varied ideas where it should go. I believe what you want to know is what is the temperature of the fluid as it goes into the working parts of the transmission. If that is what you want to know then the pan is the logical place. Jim
  9. J

    Fan clutch engaging too often?

    Sounds like its working (-: Jim
  10. J

    Best 6.9 N/A Muffler?

    When I was NA I built a 3" dual all the way to behind the duals system using Flowmaster 50 series. It was so loud it would rattle windows and give us a headache. It was TERRIBLE. It took 30" long round truck mufflers from NAPA behind the Flowmasters to get it quiet enough we could listen to the...
  11. J

    7.3 IDI HP mod's.....

    Tech, No one answered your question about cool air kits. Check with Hypermax. I have their cool air intake for E series and they also make one for F series. Jim
  12. J

    Cat 3208 in a Ford

    Why ruin a nice truck just to be different. After you do all the work and spend all the money to do the swap the truck likely won't be worth as much as it is now and for sure it will drive way worse with the extra weight on the nose. I am very familiar with the 1160, I worked in a Ford dealer...
  13. J

    6V71?

    The modern light weight diesel engines that are used in light trucks today are capable of making more power than you can possibly use with out the weight or having to butcher the truck all up.Cummins and Izuzu can both make over 1000 hp if you open your wallet far enough. One of them in a Ford...
  14. J

    Kerosene?

    Back in the early 70's (I'm old) I had a 4-51 GM diesel in a 53 Ford 1/2 ton PU. Ran it on stove oil for 7 years. Smoked too bad on #2 Diesel. In this area #1 diesel, stove oil, kerosene, and jet A come out of the same tank. Its all refined to the jet A spec which is the least sulphur and the...
  15. J

    HELP..85 6.9 how much oil?

    10 quarts with a filter change. Jim
  16. J

    pyrometers..

    Cheeper Jeeper, Did you ignore the oil cooling for the pistons for some reason? Jim
  17. J

    pyrometers..

    Hypermax says you can run a 6.9 - 7.3 IDI "All day long" at 1250 EGT. There is a lot made out of the fact that supposedly aluminum melts at 1250 degrees. That may or may not be true for the alloy used in pistons but one BIG thing is always missed in the discussion. The gauge we are talking about...
  18. J

    Is 250 too hot?

    Do you hear the fan clutch engage? There is no doubt when it kicks in, the fan is quite loud. You couldn't miss it. Jim
  19. J

    6V71?

    TOO Heavy!!!! Jim
  20. J

    My New Intake Pics

    Looks nice but why go to all that trouble and still pull air into the engine that has been heated by passing through the radiator. A air source that has not gone through the radiator will give you air that is cooler thus denser so will give more power and the cooler air will translate to lower...
  21. J

    Newbie signing in with turbo?

    You need to figure out what brand of kit it was. I have a Hypermax turbo kit on my '86 E-350 chassis motorhome. Jim
  22. J

    Quick turbo question

    To clarify, the guy with the 5.9 that is getting 120psi boost I used the term "compound" That is when you run the exhaust side of one turbo into the inlet side of second turbo. Same on the intake side. The guy has spent thousands of dollars on mods to the engine. The head has been O-ringed...
  23. J

    fan clutch

    One thing that has not been mentioned. If you pin the clutch you are going to have to listen to that noisy fan roar all the time. Jim
  24. J

    steering damper?

    DO NOT try to get that slop out with the mesh screw. You will bind the torque rod inside the gear and you will have one weird driving truck. If you try tightening the mesh do it with both front wheels off the ground and with the engine running slowly turn the wheel back and forth past center...
  25. J

    steering damper?

    More than likely the problem is inside the steering box. Our steering gears are known to have poor, loose fitting ball bearing in the recirculating ball sector shaft. Start your truck and with it idling have someone move the steering wheel back and forth until the wheels just start to move...

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