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  #16  
Old 11-22-2009, 08:20 AM
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124.128/602.962/722.418
 
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Do the 602's have the governor also? My tach is not working yet so I intentionally keep the rpms down just from listening to sound levels. I have once (or twice ) let it rev out to max rpm while shifting from 2 to 3 and wondered just what that shift point RPM was. Does anyone know? I probably baby it too much and am doing more harm than good.

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  #17  
Old 11-22-2009, 10:58 AM
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Quote:
Originally Posted by pawoSD View Post
I don't know about the "runs out of power over 4400" idea....mine pulls strong to the governor....then it just kinda holds there until I shift. It's faster revving it to max in third than it is to go to 4th at 4400 and keep on it.
Interesting.

If true, the M/B stated hp peak is lower than actual.

I'm not believing it without some ET's under both scenarios (4400 rpm shifts and 5000 rpm shifts).

If it still has decent torque at 5000 rpm's the horsepower is significantly greater than the stated 125 hp.
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  #18  
Old 11-22-2009, 05:47 PM
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Quote:
Originally Posted by Oldwolf View Post
Do the 602's have the governor also?
Yes. ALL diesel engines in automotive use have come with governors since the 30's. In fact, I'm not aware of any diesel engine that does not have a governor incorporated into the fuel system.
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  #19  
Old 11-22-2009, 06:21 PM
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Quote:
Originally Posted by Hatterasguy View Post
My old 603 and my friends 606 are screamers, they will happily rev to 5k or in the 606's case just over. Thats screaming for a diesel!


The Finn's run them up to like 7k!

Wow, its a rare day when mine see's anything about 3,000-3,500......
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  #20  
Old 11-29-2009, 02:16 AM
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  #21  
Old 11-29-2009, 11:06 AM
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As stated earlier. It's the mass and of course stroke. Diesels typically have much greater mass in the piston. Trying to get that piston to stop at the top of a stroke and get sent the other way creats a huge force.

Bearing speed on the crank is also an issue since the throws are so large but modern oil and bearings have pretty much solved that problem.

It's easy to over fuel and over rev a diesel so they are governed. Gas engines are so restricked in the intake its hard to over fuel them so no govener.

In the day a small block chevy would rev much higher and stay together than the big block and it was all about crank journal size. Not sure about today.

anyway thats my 2 cents. Thanks

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