Twin alt setup in progress, pics
Dec 18, 2005 | 10:23 AM
#22
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Joined: Oct 2002
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From: Dallas, North Mexico
Originally Posted by thunder550
As far as where the alts mount, this was the least intrusive and easiest way that we could think of to do this. Everything is bolt-on, no welding, factory locations, etc etc. The brackets are very simple. What would you have done differently? (and I mean that seriously, not sarcastically)
The more pullies you add, the higher the load the belt needs to spin- the most slipping that will occur.
After going through 3 GM alternators in 75k miles- id just spring for an aftermarket.
What you want to do is put it at the most extreme angle possible, so you have the most wrap (surface area) around the pully. If you raise or drop it a few inches, you an go around one and COME BACK to the first, then continue on.
Dec 18, 2005 | 08:22 PM
#23
Teching In
Joined: Dec 2005
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From: sacramento, ca
while having the most "grab" possible like my man ^^^ is tryin to say would be best......anyone whos done dual alts can tell you that "ya gotta do what ya gotta do" and you cant always have idler pullys everywhere, especially if you have a supercharger chewin up probably more than 12" of belt by itself. Lining em up like your doing will work GREAT dont worry about it. You may not get any slippage at all, but if you do it will probably ONLY happen under heavy load for a breif second. If thats the case then maybe incorporating a single idler in between will do just fine. They arent that hard to do either, but like i said the Supercharger will make it hard to find a belt and im guessing a 130" belt will be needed if you do add an idler. Without it you can get away with a 121" belt (thats what i did in the Caddy im workin on)
Ive put 30,000 miles on my tahoe since ive done my dual alts and even drove across the U.S. to go to World Finals last year.........so i will tell you now that linin' them up like you are doing will be the BEST way to do it in "our" type of truck. Keep me posted thru PM if ya need help
Ive put 30,000 miles on my tahoe since ive done my dual alts and even drove across the U.S. to go to World Finals last year.........so i will tell you now that linin' them up like you are doing will be the BEST way to do it in "our" type of truck. Keep me posted thru PM if ya need help
Dec 19, 2005 | 12:54 AM
#24
Staging Lane
Joined: May 2005
Posts: 54
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From: SoCal
I'm glad meade916 posted here. I don't think there is any other clean way to mount the two alternators other than where we put them. The only other way to mount them would require an entirely new power steering/alternator bracket and that is unnecessary and expensive. I think the wrap would be fine without an idler, but since Chris is planning on spinning the engine over 6k an idler will keep any slippage from occuring on the 1-2 shift. I'm sure Chris will post again once we/he get an idler pulley inbetween and underneath the alternators.
Chris - you were right about those camera phone pictures - they do come out nice! Paint those brackets!
Ryan
Chris - you were right about those camera phone pictures - they do come out nice! Paint those brackets!
Ryan
Dec 19, 2005 | 10:25 AM
#26
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From: Phoenix, AZ
Originally Posted by meade916
while having the most "grab" possible like my man ^^^ is tryin to say would be best......anyone whos done dual alts can tell you that "ya gotta do what ya gotta do" and you cant always have idler pullys everywhere, especially if you have a supercharger chewin up probably more than 12" of belt by itself. Lining em up like your doing will work GREAT dont worry about it. You may not get any slippage at all, but if you do it will probably ONLY happen under heavy load for a breif second. If thats the case then maybe incorporating a single idler in between will do just fine. They arent that hard to do either, but like i said the Supercharger will make it hard to find a belt and im guessing a 130" belt will be needed if you do add an idler. Without it you can get away with a 121" belt (thats what i did in the Caddy im workin on)
Ive put 30,000 miles on my tahoe since ive done my dual alts and even drove across the U.S. to go to World Finals last year.........so i will tell you now that linin' them up like you are doing will be the BEST way to do it in "our" type of truck. Keep me posted thru PM if ya need help
Ive put 30,000 miles on my tahoe since ive done my dual alts and even drove across the U.S. to go to World Finals last year.........so i will tell you now that linin' them up like you are doing will be the BEST way to do it in "our" type of truck. Keep me posted thru PM if ya need help
Thanks for the reply Steve. I have an idea for the idler, have to fit it up and check out belt length, but I think it may be too long. Where did you get the 121" belt?
Dec 19, 2005 | 10:26 AM
#27
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From: Phoenix, AZ
Originally Posted by TPICamino
I'm glad meade916 posted here. I don't think there is any other clean way to mount the two alternators other than where we put them. The only other way to mount them would require an entirely new power steering/alternator bracket and that is unnecessary and expensive. I think the wrap would be fine without an idler, but since Chris is planning on spinning the engine over 6k an idler will keep any slippage from occuring on the 1-2 shift. I'm sure Chris will post again once we/he get an idler pulley inbetween and underneath the alternators.
Chris - you were right about those camera phone pictures - they do come out nice! Paint those brackets!
Ryan
Chris - you were right about those camera phone pictures - they do come out nice! Paint those brackets!
Ryan
Dec 19, 2005 | 10:27 AM
#28
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From: Phoenix, AZ
Originally Posted by 1slow01Z71
Good luck man Ill be first in line for one if you can make them work well and they arent too expensive. Very nice setup IMO.
Dec 19, 2005 | 10:28 AM
#29
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From: Phoenix, AZ
Originally Posted by SSlow 4.8
oh and do you have any working alternators laying around? i'm looking for the 140a one from a denali or whatever truck it came out of... just something that is larger than our stock ones but will work as a direct connection rather than having to splice anything in.
Dec 19, 2005 | 10:29 AM
#30
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From: Phoenix, AZ
Originally Posted by treyZ28
What you want to do is put it at the most extreme angle possible, so you have the most wrap (surface area) around the pully. If you raise or drop it a few inches, you an go around one and COME BACK to the first, then continue on.