Looking for interest in a Lightweight Underdriven Crank pulley
Looking for interest in a Lightweight Underdriven Crank pulley
The Crank Pulley in the Ralliart is HUGE and heavy. I have a CNC machine shop that will custom make a lighter underdriven crank pulley for the Ralliart. The problem is that I need 10 people to buy in on this. If I have lots of interest in this then I may get it going. What would you be willing to pay for this? A different belt would be required, and I will provide part numbers for that. I would also be willing to include a belt with the shipment at cost.
Just for all you nay-sayers, the Ralliart has a hamonic dampener pulley not a balancer. Removing the stock pulley will not cause less engine life versus the lighter underdriven replacement unit. By the size of the stock pulley there should be very good gains from this piece. I would expect around 10whp as a baseline. Your car will rev quicker and be more responsive. The only downside I can think to a smaller pulley is to any owner with an aftermarket stereo that draws a lot of power. This pulley will also underdrive the belt driven components which also frees up power.
Just for all you nay-sayers, the Ralliart has a hamonic dampener pulley not a balancer. Removing the stock pulley will not cause less engine life versus the lighter underdriven replacement unit. By the size of the stock pulley there should be very good gains from this piece. I would expect around 10whp as a baseline. Your car will rev quicker and be more responsive. The only downside I can think to a smaller pulley is to any owner with an aftermarket stereo that draws a lot of power. This pulley will also underdrive the belt driven components which also frees up power.
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Joined: Apr 2003
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How much do you think that it would cost?
I can vouch for the effects that this would have. I had a UR pulley on my old Eclipse GT and the effects were very noticeable. The only downside was that it triggered the SES light. They used a pulley from the 3000GT and guessed that it would work for us.
I can vouch for the effects that this would have. I had a UR pulley on my old Eclipse GT and the effects were very noticeable. The only downside was that it triggered the SES light. They used a pulley from the 3000GT and guessed that it would work for us.
Last edited by tuffguy; May 31, 2005 at 02:02 PM.
By the looks of things it would be about $60 plus shipping. The belt would probably run in the $20-30 range so your looking at $100 roughly for everything you would need.
I plan to do NO guesswork here. I will test this unit on my own car first and look for any ill effects. They will send me a prototype for testing, at which point I may get the car dynoed to see actual differences. It is possible I could be a vendor on this unit.
I plan to do NO guesswork here. I will test this unit on my own car first and look for any ill effects. They will send me a prototype for testing, at which point I may get the car dynoed to see actual differences. It is possible I could be a vendor on this unit.
I think I'll be in for it, gotta make sure I can sneak this in under the girlfriend radar. Let me know when you get a prototype, if possible I'd like to be around when you install it. Then I can go through it once before I do it on my own car. 
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Originally Posted by drivethrufinch3
this may sound like a stupid quitestion but would this work on the 2 liter engine? i know id probably need a diff belt because diff lengths but besides that could it?