Cog belts?
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Cog belts?
http://rpmoutlet.com/lightcog.htm
Can anyone explain to me how this would be good or a bad idea?? Thoughts, etc.....
Can anyone explain to me how this would be good or a bad idea?? Thoughts, etc.....
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Originally posted by cpeapea
a while back i thought it would be a good idea to machine myself some billet cog pulleys. it would sound cool i bet, plus it would eliminate belt slip
a while back i thought it would be a good idea to machine myself some billet cog pulleys. it would sound cool i bet, plus it would eliminate belt slip
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From: Jasper Alabama
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From: San Antonio, TX, USA
Cog setups are for race only applications. For street applications you want to prevent as much belt slip as possible while maintaining the ability to slip if something goes wrong (ie the boost by pass fails on a high rpm deceleration). If something goes wrong and that belt cannot slip bad things will happen.
--Steele
--Steele
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From: irving, texas
Originally posted by 400HPHD
so cog belts sound different?? or did you mean "sound cool" as in a refrence term??
so cog belts sound different?? or did you mean "sound cool" as in a refrence term??
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From: San Antonio, TX, USA
Originally posted by cpeapea
...im not too sure about what skennet posted, ive ran cog drives on street cars before and havent had a problem, but he might have a point. i'm just not sure when a belt will 'need' to slip. a boost bypass isnt always ran on blowers, i.e. 6-71s all the way up to 14-71s and sals prototype version of the whipple...
...im not too sure about what skennet posted, ive ran cog drives on street cars before and havent had a problem, but he might have a point. i'm just not sure when a belt will 'need' to slip. a boost bypass isnt always ran on blowers, i.e. 6-71s all the way up to 14-71s and sals prototype version of the whipple...
Cog belts are not used on the street for a reason. You can cause severe damage with cogs. It's ok to drive a cog car once a week around town, but even then it's suseptable to damage.
When you are doing 5000rpm and you take your foot off the gas, two things happen. One, the throttle closes, and two the by pass opens. The by pass opens to relieve the pressure from a blower that's still turning high rpms. If the by pass happens to fail, you are no longer venting boost and the pressure backs up in the motor and tries to rip everything apart. I have seen cogged Vortechs get thier impeller blades ripped right off on hard decel with a failed by pass.
Street driven blower cars use serpentine drive belts because in the case of a failed by pass, the blower tries to lock up and the belt slips instead of the blower destroying itself. If you put cogs on the Lightning, and the by pass fails, there is no doubt the pressure backup would flex the rotors to where they contact each other and the case. That would not be good.
When you are doing 5000rpm and you take your foot off the gas, two things happen. One, the throttle closes, and two the by pass opens. The by pass opens to relieve the pressure from a blower that's still turning high rpms. If the by pass happens to fail, you are no longer venting boost and the pressure backs up in the motor and tries to rip everything apart. I have seen cogged Vortechs get thier impeller blades ripped right off on hard decel with a failed by pass.
Street driven blower cars use serpentine drive belts because in the case of a failed by pass, the blower tries to lock up and the belt slips instead of the blower destroying itself. If you put cogs on the Lightning, and the by pass fails, there is no doubt the pressure backup would flex the rotors to where they contact each other and the case. That would not be good.
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From: irving, texas
gotcha 
but has anyone had a bypass fail to open?
as for the pcv filters, they arent filters, they are badass check valves, they actually close completely and dont allow boost into they crank case. the company is called krankvents, and were originally designed for turbo cars pushing ungodly amounts of boost.
but has anyone had a bypass fail to open?
as for the pcv filters, they arent filters, they are badass check valves, they actually close completely and dont allow boost into they crank case. the company is called krankvents, and were originally designed for turbo cars pushing ungodly amounts of boost.
Just say no