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MMR Lightweight Water Pump Pulley for 5.0 / 5.2 Coyote Engines

StoplightWarrior

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This seems like a great option for our cars, for the price - simple/cheap bolt ons are very hard to come by these days! Anyone using this piece yet?

I think at that price, my only concern would really be any potential harm to the motor - even if the thing only unlocks 3 or 4 hp, it would still be a cool mod for under $80 and easy install!
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Jayme

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Any update on this?
 

Jayme

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Oh well. Ordered along with the arp bolt kit.
 

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Gibbo205

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Doctor Fishtail

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Subscribed. Be nice to have a write up on this. I always look at what is involved before ordering. :thumbsup:
 

Lonmon

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I got one. Very easy to put on, might have taken me 20 mins. Nice piece, but less then a pound of rotational weight removed from the rotational assembly does not really make a noticeable difference. I did it more as one piece of larger picture. I like how several small improvements can add up. Looks really nice too.
 

Doctor Fishtail

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I got one. Very easy to put on, might have taken me 20 mins. Nice piece, but less then a pound of rotational weight removed from the rotational assembly does not really make a noticeable difference. I did it more as one piece of larger picture. I like how several small improvements can add up. Looks really nice too.
Did instructions give ya torque specs for bolts?
 

Lonmon

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I don't believe so. The bolts were very easy to get off. I am a 20yr tech and could tell how tight I needed to make them. I would suggest that you find the specs to make sure they are tightened properly.
 

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terryz

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Maybe a stupid question, but does this pulley rotate at varying speed along with the engine?
My point is, if the pulley rotates at a constant speed regardless of engine speed, then lightening it doesn't do anything other than reduce some static weight from the car, which is less than 1lb for $70.
 

Terminator2

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Maybe a stupid question, but does this pulley rotate at varying speed along with the engine?
My point is, if the pulley rotates at a constant speed regardless of engine speed, then lightening it doesn't do anything other than reduce some static weight from the car, which is less than 1lb for $70.
Yes as rpms increase it should spin faster.
 
 




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