Lighter and/or Underdrive Pulley?
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Joined: Jan 2010
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From: Chesapeake Beach, MD
Lighter and/or Underdrive Pulley?
Is one available for the 4B11T and is it effective in helping the engine (and by extension, the turbo) spool up faster? 
I have not seen any discussion... Or did i miss it?
I have not seen any discussion... Or did i miss it?
Evolved Member
Joined: Feb 2011
Posts: 769
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From: Montreal, QC
Evolved Member
Joined: Feb 2011
Posts: 769
Likes: 0
From: Montreal, QC
That is one part that I would never install on the car. You will have nothing but problems. Battery not charging properly, lights become dim..... and the biggest problem with the pulley is that there is no real gains.
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i've found one i can't remember who makes it but i asked awhile ago and from someone who had it said theres better ways to spend the money.. and then that harmonic balancer came up
save 150 for a bigger bang for the buck part IMO
save 150 for a bigger bang for the buck part IMO
Im not well read on the 4b11 but i assume it has balance shafts? If you replace the harmonic damper then it will be fine. Its been estimated Every 1lb removed from then engine rotating assembly frees 2.7hp up that doesnt have to spin the extra weight. But it also dips torqe. But not nearly as much. Underdrive pulleys are a bad idea i agree with the masses. But lightened pulleys are fine to a certain extent. I am selling one for a ix that i used for several thousand miles with no excess bearing wear on my first motor. I removed my balance shaft so i need a quality damper to soak up the excess vibration now. Otherwise id still have it. And it didnt cause my lights to dim or any ill effects on performance.
That being said there arent to many decent mods for 150bucks. Eventually your gonna end up buying it or upgrading passed its effective range. But how many thousands do we waste doing that with other parts. For examples check my sig
That being said there arent to many decent mods for 150bucks. Eventually your gonna end up buying it or upgrading passed its effective range. But how many thousands do we waste doing that with other parts. For examples check my sig
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Joined: Jun 2010
Posts: 155
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From: Adams, MA
Im not well read on the 4b11 but i assume it has balance shafts? If you replace the harmonic damper then it will be fine. Its been estimated Every 1lb removed from then engine rotating assembly frees 2.7hp up that doesnt have to spin the extra weight. But it also dips torqe. But not nearly as much. Underdrive pulleys are a bad idea i agree with the masses. But lightened pulleys are fine to a certain extent. I am selling one for a ix that i used for several thousand miles with no excess bearing wear on my first motor. I removed my balance shaft so i need a quality damper to soak up the excess vibration now. Otherwise id still have it. And it didnt cause my lights to dim or any ill effects on performance.
That being said there arent to many decent mods for 150bucks. Eventually your gonna end up buying it or upgrading passed its effective range. But how many thousands do we waste doing that with other parts. For examples check my sig
That being said there arent to many decent mods for 150bucks. Eventually your gonna end up buying it or upgrading passed its effective range. But how many thousands do we waste doing that with other parts. For examples check my sig