Cut pulley.
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Joined: Apr 2003
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From: Houston
Originally Posted by Quamen
^^^
I think he just put slots into the SC pulley as there would be no need to do it to the crank pulley since that is one of the last things that would slip.
I think he just put slots into the SC pulley as there would be no need to do it to the crank pulley since that is one of the last things that would slip.
Maybe my picture was too big. Lol. Thanks DZ, I was really sick of those other guys using imaginary driving skills as an excuse not to boost. They trade their Sentra for a Z and all of a sudden think they are Ricky Bobby.
Originally Posted by zzerotwosixty
Maybe my picture was too big. Lol. Thanks DZ, I was really sick of those other guys using imaginary driving skills as an excuse not to boost. They trade their Sentra for a Z and all of a sudden think they are Ricky Bobby.
Originally Posted by sentry65
I don't think it's quite as critical as the crank pulley since the SC pulley doesn't have a crankshaft, 6 pistons/rods, 2 cams, 24 valves connected directly or indirectly to it
I wouldn't recommend sandblasting or sanding whatsoever any stock pulleys because they START rusting immediately, and have a thin layer of surface rust within hours.
Originally Posted by Cube
4 cams?
I wouldn't recommend sandblasting or sanding whatsoever any stock pulleys because they START rusting immediately, and have a thin layer of surface rust within hours.
I wouldn't recommend sandblasting or sanding whatsoever any stock pulleys because they START rusting immediately, and have a thin layer of surface rust within hours.
Originally Posted by booger
The Vortech serp pulley in question is made of aluminum I believe . And will not rust .
With all the talk about the crank pulley and messing up the steel gaskets that accompany it, I figured I would throw that out there. Sorry for filling people in on past experience. I guess I should have...
For future reference, stock pulleys rust fast without any oil, paint, or other protective coating on them because they are made from a very porous steel.
made it more clear...
For future reference, stock pulleys rust fast without any oil, paint, or other protective coating on them because they are made from a very porous steel.
made it more clear...
Originally Posted by Cube
With all the talk about the crank pulley and messing up the steel gaskets that accompany it, I figured I would throw that out there. Sorry for filling people in on past experience. I guess I should have...
For future reference, stock pulleys rust fast without any oil, paint, or other protective coating on them because they are made from a very porous steel.
made it more clear...
For future reference, stock pulleys rust fast without any oil, paint, or other protective coating on them because they are made from a very porous steel.
made it more clear...
I think I get it... if the belt lays flat against the pulley, with no groove or gap, then there will be a film of air between the pulley and belt.
If there is somewhere for the air to go, like grooves, holes, etc, then there will be somewhere for air to go and there won't be a cushiony film of air.
Just like ... when you drop a piece of paper, it flies all over the place and can glide on the cushion of air before it lands. But if the paper has holes in it, it will pretty much fall straight down.
If there is somewhere for the air to go, like grooves, holes, etc, then there will be somewhere for air to go and there won't be a cushiony film of air.
Just like ... when you drop a piece of paper, it flies all over the place and can glide on the cushion of air before it lands. But if the paper has holes in it, it will pretty much fall straight down.
Originally Posted by Wired 24/7
I think I get it... if the belt lays flat against the pulley, with no groove or gap, then there will be a film of air between the pulley and belt.
If there is somewhere for the air to go, like grooves, holes, etc, then there will be somewhere for air to go and there won't be a cushiony film of air.
Just like ... when you drop a piece of paper, it flies all over the place and can glide on the cushion of air before it lands. But if the paper has holes in it, it will pretty much fall straight down.
If there is somewhere for the air to go, like grooves, holes, etc, then there will be somewhere for air to go and there won't be a cushiony film of air.
Just like ... when you drop a piece of paper, it flies all over the place and can glide on the cushion of air before it lands. But if the paper has holes in it, it will pretty much fall straight down.
I think the only reason it stops slippage any more is because the new edges he's made dig into the belt as soon as the belt comes in contact with the edges as the edes of the pulley spin into the belt. However miniscule, it's still "digging in." That would explain a shortened belt life as well...
yeah I pretty much thought the same thing - that the edge of the groove was what was cutting into the belt more for traction.
since it's a circular pulley, air can escape alongside the grooves where the belt isn't wrapped around
though it probably gives more options for the air to get out faster
since it's a circular pulley, air can escape alongside the grooves where the belt isn't wrapped around
though it probably gives more options for the air to get out faster
Oh and btw, air is displaced very very easily with rubber. Just like how your tires don't "aeroplane," they "hydroplane" instead. Even if you were going 300 mph and all of a sudden ran across a drop in the road's level, much like hitting a puddle at 60 mph, but you'd instantly drop and displace the air at 300 (assuming you don't flip into the air from your big flat undercarriage catching some drag... movie Redline anyone?) yet at 60 you can glide across the top of the water... via 295/40/20's or what-have-you
Originally Posted by zzerotwosixty
Maybe my picture was too big. Lol. Thanks DZ, I was really sick of those other guys using imaginary driving skills as an excuse not to boost. They trade their Sentra for a Z and all of a sudden think they are Ricky Bobby.
Originally Posted by Wired 24/7
I think I get it... if the belt lays flat against the pulley, with no groove or gap, then there will be a film of air between the pulley and belt.
If there is somewhere for the air to go, like grooves, holes, etc, then there will be somewhere for air to go and there won't be a cushiony film of air.
Just like ... when you drop a piece of paper, it flies all over the place and can glide on the cushion of air before it lands. But if the paper has holes in it, it will pretty much fall straight down.
If there is somewhere for the air to go, like grooves, holes, etc, then there will be somewhere for air to go and there won't be a cushiony film of air.
Just like ... when you drop a piece of paper, it flies all over the place and can glide on the cushion of air before it lands. But if the paper has holes in it, it will pretty much fall straight down.
LOL
https://my350z.com/forum/forced-induction/267334-attn-vortech-3-12-pulley-owners.html
try this as well... i bet it wont slip at all
try this as well... i bet it wont slip at all