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  • Users: Paulista
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  1. Paulista

    Uprating a 4-cylinder turbo-diesel engine

    Consider the following: 1. Manufacturer XYZ markets a 4-cylinder after-cooled turbo-diesel as well as a 6-cylinder after-cooled turbo-diesel, both for the truck market. These engines share a (near) identical design, with all major parts interchangable, excepting of course, fuel-injection...
  2. Paulista

    Gluing SS 304/316 to Polyurethane

    I was contemplating building my own motor mounts, using a polyurethane(Shore 90)rod turned on a lathe to the right diameter bushing and embedding two SS threaded rods at either end. Undersized holes would be drilled at either end of the polyurethane bushing, the appropriate glue introduced and...
  3. Paulista

    Courses for Offshore Electrical Project and Design

    I found this one at Cranfield (UK) that "fitted like a glove" excepting that the same MAY only be offered again as late as May 2006: "In addition, the Research Group offers a series of extended professional development courses directed at the shipbuilding and offshore industries. These Key...
  4. Paulista

    Course for Offshore Electrical Project and Design

    I found this one at Cranfield (UK) that "fitted like a glove" excepting that the same MAY only be offered again as late as May 2006: "In addition, the Research Group offers a series of extended professional development courses directed at the shipbuilding and offshore industries. These Key...
  5. Paulista

    Courses for Offshore Electrical Project and Design

    I found this one at Cranfield (UK) that "fitted like a glove" excepting that the same MAY only be offered again as late as May 2006: "In addition, the Research Group offers a series of extended professional development courses directed at the shipbuilding and offshore industries. These Key...
  6. Paulista

    Twin diesels - unequal power output - help

    I have a twin diesel set up on my boat. They were factory-test engines that I bought for a much-reduced price, and I DIY-marinised them. Although one was as a factory turbo-only version while the other was a factory turbo+aftercooler version, I standardised all parts to the spec of the...
  7. Paulista

    DC Generator in older cars

    Does anyone know what type of DC Generator was standard issue on cars, prior to the adoption of the Alternator cum 3-phase (full-wave) rectifier pack ? Was it a compound-type of DC Generator - shunt + series field winding - or was the field winding excited independently ? What type of...
  8. Paulista

    Shell&Tube Heat Exchanger Question

    The simplified theory pertaining to single-pass Shell&Tube Heat Exchangers, both parallel-flow and counter-flow types, is relatively straight-forward. However, is there a rule-of-thumb approach to evaluating the benefits, if any, should the above basic scheme be modified, for example, by ...
  9. Paulista

    Torque vs RPM carachteristic in diesel engines

    Can anyone oblige as to what are the predominant factors in engine design that determine the shape of the above in diesel engines, both for NA and turbocharged types ? Or put in another way, if one wished to push the max. torque developed in a turbocharged diesel from the original 1600 RPM to...
  10. Paulista

    Alternative to marine transmission

    Marine transmissions are usually high-priced and low-volume. I was wondering if they can be substituted with high-volume low-cost car/truck-type automatic (or manual) transmissions, provided engine/transmission/prop driveline geometry permits
  11. Paulista

    Diesel engine speed (rpm) sensor and display instrument

    I looked up ISSPRO´s web site and noted that there is a non-alternator-derived rpm sensor and display instrument. This device seems to be built around an array of sensors that is glued (?) on the flywheel and a pickup located somewhere on the flywheel housing. It can be fitted to Ford 6.9/7.3...
  12. Paulista

    Laser alignment of boat propshaft bearings ?

    I have just redone the planking on the bottomsides of my wooden power boat. I now need to align a pair of prop-shaft struts, a longer one at the stern and a shorter one just aft of the point where the prop-shaft enters the engine room. The distance bewteen these struts is typically about 5-6...
  13. Paulista

    EGT measurement for 150 HP turbo-diesel

    Will be grateful if someone suggests a reasonably-priced supplier for a turn-key solution for the above, to include: 1. Thermocouple sensor for installation in exhaust manifold, upstream of the turbine flange; 2. A 2' to 2 1/2 " analogue dial gauge for display on driver´s dash; 3...
  14. Paulista

    12 V DC Solid-State Panel Pilot Light

    Can someone please tell me the manufacturer or equiv. part n° of a rectangular-shaped, red-coloured, solid-state, pilot light, equipped with "wings" that has blown on my boat´s 12VDC bilge-pump panel. The external dimensions of this pilot light are roughly 2 cms x 1,5 cms. One one of the sides...
  15. Paulista

    Uprating turbo-diesel engine power

    I DIY marinised a pair of 4-cylinder, 4.2 litre MWM Series 10 turbo-diesel truck engines, rated each at 145 HP/2600 rpm and installed them in my boat. These engines are manufactured in Brazil and MWM (Deutz group)is probably the oldest name in the manufacture of diesel engines. I was...

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