Anyone using March Perf Pulley?
05-19-2004, 02:46 PM
#1
9 Second Club
Thread Starter
iTrader: (2)
Join Date: Jul 2002
Location: on the dyno tuning in MD
Posts: 2,583
Likes: 0
Received 1 Like
on
1 Post
Anyone using March Perf Pulley? Is anyone using the new March Performance fluid filled pulley?
If so, what are the results? Thanks in advance for any input.
If so, what are the results? Thanks in advance for any input.
05-20-2004, 05:31 PM
#4
9 Second Club
Thread Starter
iTrader: (2)
Join Date: Jul 2002
Location: on the dyno tuning in MD
Posts: 2,583
Likes: 0
Received 1 Like
on
1 Post
Originally Posted by Ferocity02
SEARCH!!!! I heard the March weighs more than the stock, but offers better crankshaft vibration dampening. Thats it in a nutshell.
Everyone seemed stuck on the weight issue - which, because it is full of fluid, isn't as much of an issue as they think.
05-21-2004, 11:06 AM
#5
TECH Enthusiast
iTrader: (1)
Join Date: Dec 2003
Location: Dallas, TX
Posts: 644
Likes: 0
Received 0 Likes
on
0 Posts
I don't have any track results, or any dyno #'s. But what I do know is that they have spent alot of time making sure that it will do what they say it will. They claim you will gain 12hp, & since it is a fluid damper it will not affect any of the knock sensors & loose power. I have these in stock ready to ship if any one is interested. I ordered 5 of them for stock when they first came out & had them sold within a few days. I have not had any feedback from my past customers, but sometimes no news is good news! 
KJ
KJ
Trending Topics
05-22-2004, 09:33 AM
#8
I just weighed the March pulley and the stocker. They are both 11 lbs, give or take. The mass belonging to the March is situated closer to its center due to it being a smaller pulley. Conversely, most of the mass of the stocker is found on its outer hub which is farther away from its center than the March product. The way I am considering this, provided that the mass in each pulley is perfectly balanced, it will take more energy to accelerate the mass which is furthest from the center hub (stock unit). It also will require more energy to slow the mass which is further from the hub (stock unit).
In addition, the theory behind the March or any other underdrive pulley, is to move the mass of the pulley at a slower RATE than the stock pulley. The cumulative result is less weight over TIME.
You might consider the above by relating it to a battery in the engine compartment. As the battery is placed more forward (away from the center of the car) its weight factor becomes more of an issue.
In addition, the theory behind the March or any other underdrive pulley, is to move the mass of the pulley at a slower RATE than the stock pulley. The cumulative result is less weight over TIME.
You might consider the above by relating it to a battery in the engine compartment. As the battery is placed more forward (away from the center of the car) its weight factor becomes more of an issue.
05-22-2004, 04:06 PM
#9
Interesting...what would to say to the thought that the March pulley is fluid filled, which contributes much to the weight. But when you rev the engine, the fluid doesn't move, for the most part. An analogy would by water in a cup, if you turn the cup, the liquid will generally not move...
Originally Posted by gMAG
I just weighed the March pulley and the stocker. They are both 11 lbs, give or take. The mass belonging to the March is situated closer to its center due to it being a smaller pulley. Conversely, most of the mass of the stocker is found on its outer hub which is farther away from its center than the March product. The way I am considering this, provided that the mass in each pulley is perfectly balanced, it will take more energy to accelerate the mass which is furthest from the center hub (stock unit). It also will require more energy to slow the mass which is further from the hub (stock unit).
In addition, the theory behind the March or any other underdrive pulley, is to move the mass of the pulley at a slower RATE than the stock pulley. The cumulative result is less weight over TIME.
You might consider the above by relating it to a battery in the engine compartment. As the battery is placed more forward (away from the center of the car) its weight factor becomes more of an issue.
In addition, the theory behind the March or any other underdrive pulley, is to move the mass of the pulley at a slower RATE than the stock pulley. The cumulative result is less weight over TIME.
You might consider the above by relating it to a battery in the engine compartment. As the battery is placed more forward (away from the center of the car) its weight factor becomes more of an issue.
05-23-2004, 12:15 AM
#11
9 Second Club
Thread Starter
iTrader: (2)
Join Date: Jul 2002
Location: on the dyno tuning in MD
Posts: 2,583
Likes: 0
Received 1 Like
on
1 Post
Originally Posted by Ferocity02
Interesting...what would to say to the thought that the March pulley is fluid filled, which contributes much to the weight. But when you rev the engine, the fluid doesn't move, for the most part. An analogy would by water in a cup, if you turn the cup, the liquid will generally not move...
05-24-2004, 10:14 AM
#13
Originally Posted by Ferocity02
Interesting...what would to say to the thought that the March pulley is fluid filled, which contributes much to the weight. But when you rev the engine, the fluid doesn't move, for the most part. An analogy would by water in a cup, if you turn the cup, the liquid will generally not move...
If you take that same cup of water and suddenly give it side thrust in one direction, the water will temporarily stay where it is. (fluid filled March). This also applies to misfire, or other internal vibrations. Circular inertia keeps the ring of fluid constant until vibration acts on the ring. The mass of the fluid (which is separate from the mass of the metal ring) is the counterbalance to the forces of vibration.It'd be interesting to know the range of its counterbalancing effects.
Is the March also meant to compensate for mild weight imbalances in the rotating assembly?
05-24-2004, 02:09 PM
#14
I believe that the only reason to buy the March pulley is it's ability to reduce vibrations in the crank. Other than that, I can't really find any benefits of it over the ASP pulley. As far as I'm concerend, they are dead even with benefits/faults, and it would be up to how much you want to pay.
Anyone agree/disagree?
Anyone agree/disagree?
05-24-2004, 02:30 PM
#15
TECH Enthusiast
Join Date: Oct 2003
Location: Bakersfield, Ca.
Posts: 729
Likes: 0
Received 0 Likes
on
0 Posts
Well considering the few places I have seen both of them sold, the March pulley has been less expensive. AND!!! As of this morning, Thunder is selling a March kit WITH belts, cheaper than it is selling the ASP pulley by itself.
So you do the math.
So you do the math.
