One of the problems I have yet to completely resolve is the alternator curse on the '93.
The best and 1st aftermarket alternator I had was one from PA Performance. When I went to an underdrive crank pulley, I discovered the alternator was weak at idle. I immediately calculated the pulley size to overdrive the alternator back to stock speeds and it seemed to be fine for the longest time.
Then starting a couple years ago, I seemed to be 'over-revving' the alternator(s) and killing them. I noticed a pattern - it appeared to happen after a spirited drive or a dyno session when apparently the engine would hit the rev limiter.
The problem has compounded now after the head swap and raising the rev limiter to 7 grand. Since last fall, I have went through 3 alternators!
I've went back to a stock pulley but the voltage drops like a rock at idle. I thought maybe my old Odyssey battery was partly the cause but it always has tested good with a load tester. I've even swapped batteries with the '96 and that didn't help at all. The charging system on the '96 works just fine with the older Odyssey battery and the voltage still drops precariously at idle with the newer lead-acid battery in the '93.
I'm out of spare alternators and I am totally unsure which direction to go.
I am going to contact a local rebuilder of good rep and talk to him to see if he can rebuild one that will have good idle capabilities and be able to handle the higher rpms. I know there has to be a solution at either end but I am not sure if both high rpms and idle output can be attained.
If anyone has any pointers, I'm all ears.
The best and 1st aftermarket alternator I had was one from PA Performance. When I went to an underdrive crank pulley, I discovered the alternator was weak at idle. I immediately calculated the pulley size to overdrive the alternator back to stock speeds and it seemed to be fine for the longest time.
Then starting a couple years ago, I seemed to be 'over-revving' the alternator(s) and killing them. I noticed a pattern - it appeared to happen after a spirited drive or a dyno session when apparently the engine would hit the rev limiter.
The problem has compounded now after the head swap and raising the rev limiter to 7 grand. Since last fall, I have went through 3 alternators!
I've went back to a stock pulley but the voltage drops like a rock at idle. I thought maybe my old Odyssey battery was partly the cause but it always has tested good with a load tester. I've even swapped batteries with the '96 and that didn't help at all. The charging system on the '96 works just fine with the older Odyssey battery and the voltage still drops precariously at idle with the newer lead-acid battery in the '93.
I'm out of spare alternators and I am totally unsure which direction to go.
I am going to contact a local rebuilder of good rep and talk to him to see if he can rebuild one that will have good idle capabilities and be able to handle the higher rpms. I know there has to be a solution at either end but I am not sure if both high rpms and idle output can be attained.
If anyone has any pointers, I'm all ears.