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  • Users: 76GMC1500
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  1. 76GMC1500

    maximum piston speed?

    Why would the g's on the Chevy 350 be so much higher than everything else? Piston speeds are slower, rpms are slower, so there is more time for the piston to reach its speed of 66mph. Oh, and when you calculate the force exherted on the rod by the acceleration of the piston, don't forget that...
  2. 76GMC1500

    Turbo rotational speed sensor/meter

    The turbos on our ship have tachometeres, maybe I'll investigate their workings for you. I'm pretty sure they use a hall effect sensor.
  3. 76GMC1500

    ATF in manual gearbox?

    Borq Warner recommends either ATF or 75w90 in their T5 manual transmission. Normally, they say to use ATF, but if bearing noise is excessive or temperature are extremely high, use gear oil. If the transmission is hard to shift, they recommend ATF.
  4. 76GMC1500

    Cast Iron Engine Block Nitriding

    Nitriding cranks is standard practice and is done by virtually all auto manufacturers today. I've never heard of anybody nitriding a cylinder. Woudl it create problems during the break-in because it is harder than the piston rings? Many motorcylcles (especially 2 strokes) have nickel plated...
  5. 76GMC1500

    Combined coolant system idea

    Who said you had to "buy" your heat exchangers. You could make your own with some copper tubing and brazing wire.
  6. 76GMC1500

    Driveshaft modification

    He could machine the larger socket of a driveshaft slightly too small and heat it to get the ends to slip together. This would give you a considerable amount of friction between the 2 driveshafts and reducing the shear on the weld. How is the yolk welded onto the end of the driveshaft? Why...
  7. 76GMC1500

    Combined coolant system idea

    Why don't you just have your water pump circulate water to water to tranny fluid, power steering fluid, and refridgerant heat exchangers placed wherever you want them in the car. Set up a cooling water header and run everything in parallel. You may need thermostats on some coolers. You will...
  8. 76GMC1500

    Fuel & Cooling Hose Questions

    My motorcycle has transparent fuel lines, I think they are some kind of neoprene. I don't have any here with me so I can't tell you for sure. They start off blue, but after a few years they turn brown on the inside and lose some of their transparency.
  9. 76GMC1500

    Firing order and traction

    You're right, motorcycles don't actually have a flywheel, they use the alternator as a flywheel. Formula 1 uses a multiple disk clutch very similar to what is found on a motorcycle and probably uses the basket as a flywheel because there is a lot of weight there.
  10. 76GMC1500

    Firing order and traction

    Could be, I ride dirtbikes and they are tall so it is very easy to upset the balance and initiate a turn. They wheels have a very pronounced gyroscopic effect, and you can use this to initiate a turn. In order to make a left-hand turn, you push the left handle bar (turn them to the right) and...
  11. 76GMC1500

    Firing order and traction

    Everything in automotive design is a compromise. A lighter flywheel gives better throttle response because there is less mass to accelerate, and shifts are shorter because it takes less time for the engine to decelerate from high rpms. Heavier flywheels improve rideability by reducing the rate...
  12. 76GMC1500

    Firing order and traction

    Ok, I figrued out why big twins get better traction than the 4 cylinder engines. The engines with 2 large cylinders require more of energy be stored in a flywheel than a similarly displaced 4 cylinder in order to compress that large volume of air. A large flywheel means the rotating assembly...
  13. 76GMC1500

    Increased grease life in gearboxes

    We use some really, really tacky stuff for the reduction gear on our ship. It's fun to put it behind door handles. It takes a while to get off of your hands due to the tacky factor. Anyways, I don't know what it's called, so I don't why I even made this post. I guess it lets you know...
  14. 76GMC1500

    U-joint question

    A larger U-joint is stronger, so you may be able to run it at a higher angle, but I don't think so. It's still spinning pretty fast. When a driveshaft is straight, there is no rotation of the U-joints. You may want to consider using a CV joint as they can tolerate higher angles.
  15. 76GMC1500

    Piston thrust face scuffing, Eagle rods?

    Cranking it until you get oil pressure is good enough. The best way to clean cylinder walls is using soap and water or engine oil. Solvents like laquer thinners, mineral spirits, etc... don't pick up all of the small particles left in the scratches from the honing process. I don't think that...
  16. 76GMC1500

    Continous Solenoid: Normally ON vs Normally OFF?

    I would just splice a switch into your fuel pump's power wire, it's much cheaper than buying a solenoid and will do just as well at preventing your car from being stolen. That is what you are trying to accomplish?
  17. 76GMC1500

    Piston thrust face scuffing, Eagle rods?

    Did the car come originally with forged pistons? I don't think it did. Forged pistons generally require more piston-cylinder wall clearance than cast pistons because they have a higher coeficient of expansion.
  18. 76GMC1500

    Driveline braking

    Why use one brake on the driveshaft when you could use at the wheels? Anybody watch American Hotrod? Did anybody see that Jaguar rear-end they put under the '56 Chevy, or have you seen a Jag rear end at all? The have the brakes up near the differential, and then have a drivehsaft going to...
  19. 76GMC1500

    Mototune break in article

    Flat tappet cams need to be broken in carfully because the increased friction of the still rough surfaces creates a lot of shear force which can knock the lobes off of the cam in short order. Most manufactuers reccomend a 2000-2500 rpm break in because that is when the cam gets the best oiling...
  20. 76GMC1500

    Mototune break in article

    He criticizes manufacturers for reccomending an easy break-in period. I think the manufacturers do so because a new engine creates a lot of heat due to friction because the surfaces haven't worn in yet. This is especially apparent on air-cooled motorcycle engines when you have to shut them...

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