Pour l'alternateur avec certains kit il tourne moins vite et l'alternateur stock a deja de la misere a fournir les lumieres au idle.
Je veux bien croire que ca donne rien sur un lt1 mais le test que j'ai vu a pas ete fait dans cour a ti-bi. 5.0magazine ou carcraft s'amuseraient pas a faire des histoires de peche pour le fun.
J'ai ecrit 15 recamment,je l'ai bien vu quelque part. C'est peut etre une pointe a l'extérieur du peak,ca reste 15hp de plus.
10.5 en peak sur un mustang avec k&n pis air silencer deleted. Ca provient de fastfordandmustangs 2006.
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Underdrive pulleys. With many reports of quarter-mile improvements, we had to try underdrive pulleys on our
dyno Mustang. March Performance supplied their lightweight aluminum three-pulley "street" set, part number
2010, powder coated in a brilliant red to match our test 5.0, to reduce the horsepower-robbing drag from the front
engine accessories, including the water pump and alternator.
Steve bolted on the pulleys in less than 10 minutes, and the test run showed a peak horsepower number of 217.4,
an impressive increase of 10.1 horsepower, even more impressive was the fact that the underdrives helped across
the rpm band -- 5.2 horsepower at 2500 rpm, 9.4 at 3000 and 12.5 at 5000. The pulleys also improved torque all the
way across, with a peak improvement of 13.6 lb ft.
One side effect of the pulleys during the remainder of our test was the additional heat in the engine. Since the
underdrive pulleys slow down the water pump, the engine ran about one notch hotter on the temperature gauge
after a series of dyno runs.
Dans l'article ils essaient tout les bolt-ons un apres l'autre a part un fan ou electric waterpump.
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