what is the largest alt. pulley i can run on the street? i am looking to slow my alt. down and need some info. on what you guys and gals run to do this. i bought a 5" deep grove but haven't installed it yet... hoping this will help take the load off my 130 amp alt. pulley and maybe stop throwing the belt off. thanks for any input...running an AOD...2000 RPM road speed...idle speed...8-900 RPM... ...:Handshake...
Before you install that pulley and belt make sure the pulleys are lined up. Most often if the belt is being thrown off it is an alignment problem.
My son had the same problem on his Falcon Ranchero. He ended up going to a smaller crank pulley and that solved his belt problem. The 5" pulley on the alternator should work fine, but you will find that your lights may dim at an idle. Once you get the RPM up it will start charging again though.
it all started with it throwing the old belt (2 yrs. old). after that the new belt (3 diff. ones) want stay on...i have checked the alignment and all is in line. i am turning around 6 grand now, 5 grand before. ......
I had the same problem 2 weeks ago when I tried to start my 302. It was popping and putting on a pretty good light show in the carb. I kept thinking it was 180 out, but I was sure I did that right. After f__king around for another 30 minutes i decided to swap the wires on the distributor 180 degrees and wouldn't ya know the damn thing fired right up. I guess I shouldn't been drinking when I put the distributor in
Rotating the distributor 180 degrees keeps the belts from flying off? Huh, learn something knew everyday.
Ummm, are you running a fat belt or a skinny one? I bought some belts for my car from NAPA and their book had a skinny belt, where the Motorcraft book used a fatter one. Then I had to change the pulley, since the fat belt wouldn't stay in the skinny pulley...
I'll chime in on the 5" pulley. I ran the Moroso 5" for a long time on my 75 with the stock 36(?)amp alternator. The only power I needed was lights and wipers. I had nothing else to run that I can remember. Well, MSD and DS2 ignition. Anyway, no problem... at all. It did'nt dim at idle or anything. From what I understand about alternators, when functioning proper, is they reach a service rpm and start charging. However, they only have to reach that rpm once, then can charge below that rpm after that until you shut the engine down again. Make sense? If the lights go dim, at low rpm, there is generally a problem. If you have a super high output alternator, I'd think it'd be fine. My .02 Edit: I do recall one issue I had... When I moved my battery to the trunk, I started having issues with warm weather heat soak on the starter. That is when I broke down and went back to the stock pulley. I think I would have fixed the issue if I had either moved the solenoid to the trunk with the battery, or up-sized my positive cable. Or possibly with the addition of a full car length negative cable, rather than a short one to the rear subframe. Anyway, I took the easy way out and put the smaller pulley back.
since you love to spend money, change to serpentine and all the belt tossing goes away until it breaks
I suggested that to him yesterday on the phone. He said he used to have a serpentine setup, but had to change due to the A/C system he had installed. I asked what was more important. He said Effie liked the A/C. As any wise man would do, Frank chose to be happy.
they do but i have a new mod. i am going to do this winter...it will open a whole new can of worms... ILM: AOD,RDB,RSP,AC,CTB,DDG,AR,TEF,MSDD,H600,RFWK,SFCs, 6A,AFRs,DT,???,MS...
