Most likely you will not see any difference. If you are maxing out the output of the present alternator there may be some advantage otherwise all that will happen is the battery may get recharged just a bit faster the with the 63 amp. One the battery has reached the voltage regulator cur off voltage the 100 amp will not produce any more amperage than the present 63 amp unit.
There are a couple downsides. One that has already been mentioned here is the need for a larger wire from the alternator to the starter solenoid. When IH released 2+2 tractors with 100 amp alternator they uses two 10 gauge wires connected in parallel for this. The other downside is the alternator itself. It is easy to build the alternator to produce 100 amps but if it allowed to run at that level for any length of time the alternator will have over heating problems. Delco Remy used a 12 SI unit to overcome the excessive heat problem. Most of the components will interchange with the 10 SI but a different fan and housings are used t get more air flow through the alternator.
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Today's Featured Article - Talk of the Town: How to Remove a Broken Bolt - by Staff. Another neat discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: "I have an aluminum steering gear housing with a bolt broken off in it. The bolt is about a 3/8" x 1 1/2" bolt. I've already drilled the center of the bolt out with about 7/64" drill bit the entire length of the bolt. Only one end of the bolt is visible. I tried to use an easy out but it wasn't budging and I didn't want t
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