47Plymouth Posted October 27, 2006 Report Posted October 27, 2006 Some time ago there was discussion about replacing generator with single wire GM alternator. This is for my 52b3c Pilothouse truck it has already been converted to 12 volt. Does anyone have the napa or carquest part number for this alternator? 47Plymouth Jerome Quote
PatS.... Posted October 27, 2006 Report Posted October 27, 2006 Not sure about the alternator, but restorides had a nice bracket to mount it to our flatheads Quote
Olddaddy Posted October 27, 2006 Report Posted October 27, 2006 You may want to look at this page, it has considerable info about 1 wire versus 3 wire alternators. I used Mopar alternators, pretty generic from slant/6 powered cars with pretty good success. Link; http://www.madelectrical.com/electricaltech/onewire-threewire.shtml Quote
Don Coatney Posted October 28, 2006 Report Posted October 28, 2006 I have installed a mid 80's GM alternator in my car. I bought the alternator for around 20 bucks at the local bubble pack parts house. I modified the original generator bracket with a hunk of all thread and some hand milled standoffs as pictured. See the next posting Quote
Don Coatney Posted October 28, 2006 Report Posted October 28, 2006 With my original engine I was running a "fat" belt and I bought this pulley to make the fat belt work. With my Desoto engine I am using a skinny belt so the pulley that came with the alternator works as is. I was able to use the stock Desoto belt tensioner as pictured. The original P-15 belt tensioner would not work with this alternator. In order to "excite" this alternator I had to run a jumper wire from the #2 plug-in terminal to the battery connection on the back of the alternator. I completely eliminated the voltage regulator. In order to excite the alternator I must rev the engine to around 1200 RPM's when I start the engine. Once the alternator is excited it will continue charging at all engine speeds until the engine is shut off. Then it is once again necessary to hit 1200 RPM's to start the charging cycle again. I have over 8000 trouble free miles on this setup to date. Quote
47Plymouth Posted October 28, 2006 Author Report Posted October 28, 2006 Thanks Don for the info great pictures. 47Plymouth Jerome Quote
bob westphal Posted October 28, 2006 Report Posted October 28, 2006 Great idea on the mounting brackets! Bob Quote
glendale Posted October 28, 2006 Report Posted October 28, 2006 i did exactley as he did except i did not run a wire to excite the alt. i've talked to some people that say you don't need it. and my car charged fine without it. Quote
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