DatsuNissanLove Posted March 15, 2013 Report Share Posted March 15, 2013 Has anyone dyno'd a 5 speed l16 stock..der should be more horse power den with a 4 speed right? Quote Link to comment
crackerjack69 Posted March 15, 2013 Report Share Posted March 15, 2013 Where's der logic in that? 1 Quote Link to comment
bilzbobaggins Posted March 15, 2013 Report Share Posted March 15, 2013 dirk a der Quote Link to comment
DanielC Posted March 15, 2013 Report Share Posted March 15, 2013 The transmission does not increase the horsepower. The engine makes the power. There is a power loss in the transmission, more in lower gears, than in fourth, because in fourth gear, the ratio is 1 to 1. Fifth gear, if available again loses more horsepower, because the power has to go through the gears in the transmission again. In fourth gear, the gears are just spinning, but not carrying any load. Quote Link to comment
DISLEXICDIME Posted March 15, 2013 Report Share Posted March 15, 2013 Blink blink Quote Link to comment
datzenmike Posted March 15, 2013 Report Share Posted March 15, 2013 Has anyone dyno'd a 5 speed l16 stock..der should be more horse power den with a 4 speed right? You may be thinking it feels more powerful or accelerates faster perhaps with a five speed? Again the internal gear ratios only multiply the available engine torque. There are an almost infinite number of ratios available in a transmission and it's often true that a 4 speed is faster 'off the line' than a 5 speed. The '68-'73 510 stock 4 speed and the '77-'79 200sx 5 speed (two completely different transmissions) have the exact same 1, 2, 3 and 4th gear ratios. Dyno runs are usually done in 4th gear, which as Daniel pointed out isn't really a gear but a straight through one to one of engine power. A 4 speed and a 5 speed would both be placed in fourth for the run to compare engine output fairly. Quote Link to comment
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