Dual pully question
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Dual pully question
So im deleting my air pump and i will be running a dual pully kit from racing beat. Has anyone using this or anyother dual belt kit ever had any cooling issues or charging issues when in normal street use? Or maybe even a little traffic?
#7
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Why are you talking about the water pump running slower? Are you planning on buying the RB main pulley? http://www.racingbeat.com/RX7-1986-1...tem/11469.html. That's something different from the dual sheave alternator pulley: http://www.racingbeat.com/RX7-1986-1...tem/11479.html
Underdrive pulleys are not great for street driving. I briefly used a 54mm Atkins dual pulley on an FD alternator, and was not pleased to find it barely charging the battery at idle. Add any additional electrical load, and it would just drain slowly. Using the stock belt may not work either; I had to test fit a bunch of larger belts until I found the right size. You'll be better off with a stock-diameter pulley around ~40mm.
Underdrive pulleys are not great for street driving. I briefly used a 54mm Atkins dual pulley on an FD alternator, and was not pleased to find it barely charging the battery at idle. Add any additional electrical load, and it would just drain slowly. Using the stock belt may not work either; I had to test fit a bunch of larger belts until I found the right size. You'll be better off with a stock-diameter pulley around ~40mm.
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#9
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if you're planning to buy them, then i'll assume you realize that RB, themselves, caution you about the use of the underdrive main for street driving as a part of it's description.
anyway, i have used their alternator pulley since the 90s, and for what it's worth, i haven't experienced any charging issues. i also agonized over getting their main pulley for while, but i eventually decided against it because i couldn't find any user feedback on it.
anyway, i have used their alternator pulley since the 90s, and for what it's worth, i haven't experienced any charging issues. i also agonized over getting their main pulley for while, but i eventually decided against it because i couldn't find any user feedback on it.
#10
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I'm using the dual alt pulley with the rotor on the front. I've had all kinds of problems getting both belts even. No matter what, if one was right on the other was too loose or tight. I'd have one belt squeel and the other was fine. So I'd tighten it up a little and the one that was right on was now too tight. I tried moving the belts around. I tried different brands of belts. I tried making sure the belts were made at the same time (had corresponding part numbers). I then tried replacing the loose belt with one size smaller. I may go to using a Pineapple Yoohoo belt.
#15
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A friend at a shop I've been spending time at suggest I pack some sort of filler in the looser belt pulley channel. I forget what he said he's used in the past. Once my engine is back if I"m still having the same trouble I'll be asking him.
#16
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LOL, yes I had exactly that experience. I asked the guy for sequentially numbered belts and he looked at me like I spoke latin. I explained to him how every belt varies a little and he tried explaining to me that every belt is measured and every part # is the same length.
#18
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Some old school brands still sell matching belts but if not keep tightening the one till it stretches the same. You will probably never find a exact twin pair of a common brand at a corporate store. I ahd to use stretch technique before and the alt. rebuilder we use at shop blamed rubber dust as culpruit of it failing
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2nd Generation Specific (1986-1992)
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09-05-15 02:13 PM