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Old 05-04-2013, 06:01 PM   #1
Scooby Newbie
Member#: 290840
Join Date: Aug 2011
Chapter/Region: MWSOC
Location: Minnesota
2005 STi
Obsidian Black Pearl

Default 4 puck clutch question

I'm looking at the act 4 puck clutch. The act street clutch is slipping. I can't decide between unsprung or sprung. I would like quick engagement. Daily driving isn't a factor. Would a 4 puck be over kill who 525whp on a mustang dyno?
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Old 05-05-2013, 09:08 PM   #2
Scooby Newbie
Member#: 113222
Join Date: Apr 2006

I would probably recommend a six puck spring center disc for two reasons:
1. A solid center disc is harder on the transmission and the splines will tend to wear out much faster than a sprung center disc.
2. Six pucks tend to engage a little less violent and there is 50% more material to soak up the heat of the clutch making it last longer and be more forgiving if it is ever overheated.
There might be some rare exceptions for this recommendation.
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Old 05-05-2013, 09:30 PM   #3
Uncle Scotty
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OK buy Nates beans


i know a good few guys with 6 puck clutches in sti's and are happy with them

ive known a couple with 4 pucks that were

a 4 puck clutch is a race car part
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Old 05-06-2013, 09:40 PM   #4
Scooby Specialist
Member#: 132587
Join Date: Nov 2006
Location: Lincoln, NE
2006 JrTuned STi
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I am running a sprung hub clutch masters 4 puck with over 500whp the pedal feel is nearly factory, I love the clutch and would recommend it to anyone. Either way I would tell you to stay away from a unsprung hub.
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Old 05-07-2013, 12:40 PM   #5
👏 Big Ron 👏
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
on car parts so PM
me b4 j00 buy


OP needs to read http://forums.nasioc.com/forums/showthread.php?t=775679 as stating WHP means zero to a clutch.
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