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Trucks, Tractors & Machinery
Exhaust Brake on a 95 Dodge
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<blockquote data-quote="Nesikep" data-source="post: 1129357" data-attributes="member: 9096"><p>I don't really see how exhaust compression brakes (the kind on a dodge) are hard on the engine, or fuel consumption... Engine retarder brakes on the big rigs are a different animal entirely as I believe they function internally somehow, and use fuel to do it... Compression brakes basically only turn the engine into an air compressor, no fuel is injected when it is engaged.</p><p></p><p>You can hear the difference between the two types of brakes, the real rattle of a real jake brake, and the hiss of a compression brake. Compression brakes can be good to help warm up the engine in the winter too, and prevent cylinder wall washing due to too low EGT's. it helps if you turn up the idle a bit (a PITA to do) for the wintertime as well... about 800-850 is what I like in the winter, about 150 RPM lower for summer.</p><p></p><p>Another note about 5th gear... One of the root problems isn't that the splines are too short (there are places selling "full spline" shafts), but that if the nut was just loose for a long time before it came off, the splines get worn, causing it to work on the new nut more, and nothing will stop it at that point... the gear needs to have a tight fit to the shaft!</p><p></p><p>How is that allison tranny? I hear the GM style NV4500 was not much more than different splines on the shafts. Tell me about that tranny and how it holds up... 5 or 6 speed?</p></blockquote><p></p>
[QUOTE="Nesikep, post: 1129357, member: 9096"] I don't really see how exhaust compression brakes (the kind on a dodge) are hard on the engine, or fuel consumption... Engine retarder brakes on the big rigs are a different animal entirely as I believe they function internally somehow, and use fuel to do it... Compression brakes basically only turn the engine into an air compressor, no fuel is injected when it is engaged. You can hear the difference between the two types of brakes, the real rattle of a real jake brake, and the hiss of a compression brake. Compression brakes can be good to help warm up the engine in the winter too, and prevent cylinder wall washing due to too low EGT's. it helps if you turn up the idle a bit (a PITA to do) for the wintertime as well... about 800-850 is what I like in the winter, about 150 RPM lower for summer. Another note about 5th gear... One of the root problems isn't that the splines are too short (there are places selling "full spline" shafts), but that if the nut was just loose for a long time before it came off, the splines get worn, causing it to work on the new nut more, and nothing will stop it at that point... the gear needs to have a tight fit to the shaft! How is that allison tranny? I hear the GM style NV4500 was not much more than different splines on the shafts. Tell me about that tranny and how it holds up... 5 or 6 speed? [/QUOTE]
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Exhaust Brake on a 95 Dodge
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