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Old 10-16-2010, 04:30 PM   #11 (permalink)
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Why not set the timing far enough ahead to get max torque at 0 RPM? It would be just like an electric motor, and not use any gas at all.

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Old 10-16-2010, 04:56 PM   #12 (permalink)
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Quote:
Originally Posted by IsaacCarlson View Post
I set the timing back to 10° today and test drove....I lost a lot of my low-end torque. I used to be able to smoke the tires on the driveway in third from idle....not with 10° timing. It starts quicker, and seems to drive "easier". The computer advanced the timing a LOT more with the base set at 14° than at 10°. The comp advances the timing to ~26° with 14° timing and only 15° with 10°....anybody know why? Shouldn't it be linear? Maybe leave the spout connector plugged in and see what it does when I change it?
That doesn't make sense it should be 4 degree more across the rpm as ECU does not know your at 14 vs 10 unless you have crank, cam sensors . How are you adjusting timing ?
If it cranks slower, longer to startup your advanced more than needed . Also if you just crank initial timing your raising timing across all rpm which might not be optimum .
That might be why it feels week at top end .
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Old 10-16-2010, 09:11 PM   #13 (permalink)
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Old 10-16-2010, 09:43 PM   #14 (permalink)
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Sorry. I just don't believe max torque at 800 RPM for an automotive-sized gasoline engine.

Navistar and Cummins engines make about 75% of max torque at 1,000 RPM and peak torque about 2,000 RPM.
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Old 10-16-2010, 10:49 PM   #15 (permalink)
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y not convert it over to a gun engine and make max torque linear across the rpm band
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Old 10-18-2010, 03:20 PM   #16 (permalink)
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This seems a wimpy engine in terms of torque.
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Old 10-18-2010, 04:04 PM   #17 (permalink)
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What are the cylinder X stroke dimensions? With all that torque so low, it would need to be a very long stroke and very undersquare, as far as my limited knowledge goes? What is the redline of the engine?
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Old 10-18-2010, 04:20 PM   #18 (permalink)
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What are the cylinder X stroke dimensions? With all that torque so low, it would need to be a very long stroke and very undersquare, as far as my limited knowledge goes? What is the redline of the engine?
Seems to be in here

Ford 300 Inline 6 Cylinder Specs, Ford 300 Engine Information, Firing Order : Engine Facts.com

I assume this is the banana (although they are all the same dimensions)

Quote:
1987 - 1993 with Fuel Injection
Max Brake Horsepower - 145 @ 3400 rpm
Max Torque - 265 @ 2000 rpm
Stroke - 3.98
Bore - 4.0
Compression - 8.8
Firing Order - 153624
which suggests it is oversquare.

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