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It's easier to pull downward than upward.
There are four steps on how to measure pulley size. One of the step-by-step instructions is to diameter of driven pulley) times (revolutions of driven pulley) divided by (revolutions of driven pulley) equals (diameter of driver pulley).
A pulley can do that.
A pulley can do that.
The size is not a change. If there is a change in size that could be a physical change, but that depends on why its sized increased. If the sized increased because more material was added or because it was heated, those are examples of a physical change that caused a change in size. If the sized increased because it reacted with some other chemical, making it take up more space, that would be a chemical change that caused the size to change.
A supercharger is controlled by its pulley size. The smaller the supercharger drive pulley is, the higher in boost pressure you will see. Now if you go with a larger crank pulley, this too will cause you to see more boost. So, in all honestly, the only way to really over boost your supercharger is when you mess around with the pulleys.
3.8
3.8" inches
There are a couple of ways. Changing the pulley size to a smaller supercharger pulley will increase the speed of the supercharger, giving you more boost. You can also go with a larger crank pulley and it will do the same thing. Please keep in mind that when you do this you are adding more air into the engine so you will need to add more fuel. Getting it tuned afterwards will be a great idea. You can also do a thing called "S Porting." This is basically porting out the supercharger and slightly modifing it so that the air flows smoother. Also you can just get it custom tuned. By putting your car on a dyno and having them adjust the air/fuel mixture and timing curves it will result in better performance and more HP Thank you, From www.SuperchargersOnline.com
These are pressed on pulleys so it is highly advised not to change out the pulley. Your safest bet is to purchase a whole nose cone that already has the pulley size that is needed. We have seen way too many nose drives ruin because people are attempting to use a pulley puller to take it off. Once it is off, you also need to repress it on.
A lot! This all depends on the type and size of the supercharger. At boost levels of 7psi you can expect around a 40-45% increase in HP. At 15psi you can expect around 100% increase in HP. HP really depends on boost levels and existing engine HP.
the easiest and cheapest way is to drop the size of the supercharger pulley. but remember you have to do "supporting mods" so that you dont hurt your engine due to increased boost. Examples are exhaust mods, CAI, tune, colder plugs, lower thermostat, etc. The stock size is 3.8. you could go to a 3.6 without any mods. will give you aprox. 2 more lbs. of boost and 10-20 hp. any size smaller than that you will have to have supporting mods.
If you decrease the size of the driven pulley the fan will turn faster. You can achieve the same effect by increasing the size of the drive pulley.
depending on the size of the supercharger.. 30% to 40%
wynjammer.com Al Martin has a patented mono cog design supercharger in kit form. It's for the full-size gm trucks, and appears to be one of the best out there for easy bolt on grunt. ( 60 - 80 extra ponies at 6 lbs. boost! ) However... Installing a supercharger on your truck may void the last year of your powertrain warranty.
Roots or screw supercharger... spooling Abosultely YES. centrifugal like paxton,vortech, procharger, rotex it "spooling" depends... A supercharger is directly driven from the engine, and therefore delivers boost all the way through the rev range(roots or screw supercharger), improving bottom-end response, Centrifugal can give more boost in first gear than a turbo in first gear from a stop) at the expense of losing a few horsepower because of the load on the engine of the supercharger. A turbocharger uses exhaust gasses to spin up a turbine, which then drives an impeller, to compress incoming air, thus increasing horsepower. However, turbochargers are not very responsive at low RPMs, "taking sometime" to 'spin up', (really depends on the size of the turbo/turboes) this delay in speed, causes so-called 'turbo lag', where there is a delay getting the boost from the time you floor it, until u get boost. So, a supercharger may make a car 'quicker' from an idle start, because of its continuous boost(roots/screw supercharger), a turbocharger is better when it 'catches up' because it doesn't rob as much horsepower from the engine.
It depends on the snowblower, belt type and what you arer trying to achieve by making the change. The replacement pulley(s) will have to be the same shaft id as the original to start. Next make sure that there is room inside the snowblower for the new pulley. Thirdly the belt may have to change depending on the pulley size that you choose. There are many different pulley types and sizes available. Be aware of the changes that are made because they can decrease the snow throwing ability and also affect the drive speed and vice versa.