dbarton
Dejected by Volvo Corp.
- Joined
- Nov 17, 2002
- Location
- Prosper, TX
This idea has been stuck in my head for a couple years. The 240 alternator was designed to run two belts, in my opinion because the poor belt-to-pulley wrap with this design made BELT-SLIP a problem if the alternator has higher than stock (low) output. So for all these years we've gotten along with the poor belt wrap as long as we didn't try to improve the weak 35 to 55 amp alternator.
So then we start putting 100 amp Bosch and Densos in there. Soon we find that we need to tighten those belts tighter or we get slippage.
I didn't stop at the 100 amp Bosch or Denso. I installed a high-performance Mechman years ago, which made me tighten those belts even more.
What did I do then? I bought an even badder Mechman and installed it in the last year. It's a 170 amp large case GM type with a hairpin style stator. It came with a dyno sheet showing it puts out 145 amps at idle. I don't need 145 amps at idle (few cars do), but it's nice to finally have an alternator I don't think I can slow down. It's the first alternator I've ever seen that can maintain 14.7v at idle no matter what accessory is turned on. No matter what!
Except of course belt slip is still something to work on. Belts are tight right now and working, since they're brand new. But I went through a set of belts during my trip to Davis and back in April (4,000 mile round trip) and they began slipping badly on the way home and would no longer respond to over-tightening without some slip.
So my idea is simple. To build an idler pulley to do this below (yes, back-side V-belt idler):
Dave B
.
So then we start putting 100 amp Bosch and Densos in there. Soon we find that we need to tighten those belts tighter or we get slippage.
I didn't stop at the 100 amp Bosch or Denso. I installed a high-performance Mechman years ago, which made me tighten those belts even more.
What did I do then? I bought an even badder Mechman and installed it in the last year. It's a 170 amp large case GM type with a hairpin style stator. It came with a dyno sheet showing it puts out 145 amps at idle. I don't need 145 amps at idle (few cars do), but it's nice to finally have an alternator I don't think I can slow down. It's the first alternator I've ever seen that can maintain 14.7v at idle no matter what accessory is turned on. No matter what!
Except of course belt slip is still something to work on. Belts are tight right now and working, since they're brand new. But I went through a set of belts during my trip to Davis and back in April (4,000 mile round trip) and they began slipping badly on the way home and would no longer respond to over-tightening without some slip.
So my idea is simple. To build an idler pulley to do this below (yes, back-side V-belt idler):
Dave B
.
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