Idler Pulleys
#1
Idler Pulleys
I am going to change the idler pulley location on my Magnacharger setup to give me some more belt wrap. I just need a small pulley maybe 1-2" in diameter so I can tuck it in close to the blower pulley and miss the intake.
Does anyone know where to find idler pulleys in different sizes? I need one that has a bearing in it. I'm sure Autozone has them but without knowing what year, make and model one comes on I dont know how they would ever find one.
Any ideas?
Does anyone know where to find idler pulleys in different sizes? I need one that has a bearing in it. I'm sure Autozone has them but without knowing what year, make and model one comes on I dont know how they would ever find one.
Any ideas?
#4
You guys did notice I'm running a Magnacharger not a Procharger right? Does that have any effect on your responses?
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#8
This is the current idler. Its way too big and too far away from the blower pulley.
This is the blower pulley and you can see the braket a little better. You can't see the idler from this side and it's hard to tell the depth in the pic but I'm positive I can but a smaller idler on there and tuck the belt a little further around the pulley by just relocating the bolt hole.
#11
I did some more measuring... I'm going to have to have one that is 1" in diameter. I can sqeaze maybe just a little more than that in there but anything more hits the intake tube and relocating it isn't an option.
You say Aster may be able to make one? I think I can probably turn down a pulley at a friends shop, im just worried about a bearing.
You say Aster may be able to make one? I think I can probably turn down a pulley at a friends shop, im just worried about a bearing.
#12
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iTrader: (9)
My smallest idler is 1.75" in diameter, can't go any smaller. You're getting into cam bearings at that size. The standard automotive bearing is 40 mm diameter which is ~1.575". The bearings I use in my small pullies are 30mm with is 1.1811".
Depending on how wide your belt is you might be able to get a cam follower, but getting one that can handle the RPM will be tricky. Most I have seen are rated significantly lower than what it would see. A 1" diameter pulley at 6500 engine RPM is getting above 49000 RPM.
Depending on how wide your belt is you might be able to get a cam follower, but getting one that can handle the RPM will be tricky. Most I have seen are rated significantly lower than what it would see. A 1" diameter pulley at 6500 engine RPM is getting above 49000 RPM.
#13
I was worried about the rotating speed getting too high. I'm down for the smallest pulley you can make. Does it come with a bearing, bolt, those special washers/spacers to attach it, or am I on my own for that? Let me know how much. If that is as small as you can make one then I will just have to change my bracketry some.