Originally Posted by
DMCVegas
I do not know about what your screech is related to, but I can speak to the experience with the alternator I purchased from him which was a 150 amp alternator. It seems to have some very tight internal tolerances because it whistles as it spins. Not exactly a klaxon siren, but very noticeable. The other problem was water. With the stock 90 amp Motorola, I never had a problem driving through standing water during, or after a big rainstorm. But with the D150, whenever I hit water the alternator would go out. I know this because the voltage dipped and my battery light would come on. The only way to fix it was to gun the engine in neutral to get the RPMs up high. I guess that would get the thing to spin all of the water out. After 2-3 seconds of that the battery light would go off and the voltage would go back up.
John doesn't sell the D150 unit any longer. I don't know why, but perhaps this is the reason. I don't know. He still sells the 140 amp unit, but as part of it's description states, "Made primary for highway use and higher current draw." I've no idea what "highway use" is supposed to mean.
I do agree that John has some parts that are indeed very useful. Such as the battery cables and A/C hoses. However, and this isn't a slight against John, or any other vendor, I'm honestly just more inclined now to buy the crimping tools and fabricate the parts myself. As someone who is a car hobbyist, I'll definitely use the tools again on other projects, and that will save me money and time in the long run. Otherwise, after years of dicking around at parts counters and the like to see what part will fit my vehicle (not just for the DeLorean, but ALL of the cars I've owned), I'm more comfortable with approved parts built to spec rather than ones that just cross over. Especially if I, or the vendor who sold them to me, have to file something to make them fit.