A thought on GPs
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Tuned
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From: Timmonsville
A thought on GPs
Glow plugs. From what i understand they help a cold diesel start. They also put enormous load on the 6litre electrical system. Even with new batteries and a healthy alt voltage drop at start up is around 11.6(FMP is at 40 at this time) volts for a minute. This drop from what i have read is a FICM killer. Within a minute of starting voltage is at 14.2,but FMP lags a few minutes behind before maintaining 47-48 FMP.Obviously my ficm has now crossed the threshold from just serviceable to out of service.
Which brings me to my question. For those of us in mild climates can GPs be disabled? If so it could eliminate so issues,but I am sure will cause others. Thoughts?
Which brings me to my question. For those of us in mild climates can GPs be disabled? If so it could eliminate so issues,but I am sure will cause others. Thoughts?
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I don't think it will start without them. I've sat in my truck with key on for 15+ minutes playing with Torque Pro or Forscan just last week. I went to start it and it wouldn't start, I had to cycle the key off then back on.
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Not too difficult to build heat in a 20:1 diesel motor.
Way back in the day I drove a Ford F700 with a Detroit 8.2 V8. No glow plugs, but it fired up at -15 no problem at all.
Josh
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We had diesel engines on the submarine, no glow plugs, they fired first try every time. I think with directly injecting fuel and the timing associated with that they felt a small amount of heat could help control the point of ignition... it's a guess as I'm no engineer. I'm not sure what a 6.0 runs for compression, maybe Josh knows, probably near 27:1??
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We had diesel engines on the submarine, no glow plugs, they fired first try every time. I think with directly injecting fuel and the timing associated with that they felt a small amount of heat could help control the point of ignition... it's a guess as I'm no engineer. I'm not sure what a 6.0 runs for compression, maybe Josh knows, probably near 27:1??
Older diesels were 22:1-24:1 CR
Then again they had low boost turbos, if they even had a turbo at all.
Most turbos on Deere motors weren't even called turbos. but "altitude compensators". Basically made about 2-4 psi at most.
Josh
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Josh
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Exhaust was pushed over the side, trying to use it in a turbo inside the boat and having a chance at an exhaust leak may have been the reason to not do that. Air was hard enough to get and we often didn't get a chance to exchange the air with outside air. The diesel sucked outside air and when it couldn't, would shut down on pressure to prevent using air inside the boat... the stuff we breathed and a submarine crew doesn't want to breath diesel exhaust very long... trust me, I know. My clothes smelled like it always and still does. When I came home my wife could tell, she could smell the boat on me, say's she misses that smell... now I drive this truck and... well, all I can say is yea babe!
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