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Old Dec 31, 2007 | 09:37 PM
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Default lq4 pistons

i am looking for some pistons for the lq4. i am wanting to raise the c/r. i know wiseco pistons makes them but i can not tell want the c/r would be. i am running the 317 heads. i would figure to just hone the cylinders and change out the pistons. can someone give me some suggestion? and a link. i looked at summit and could get the c/r looking at the info they gave me.
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Old Dec 31, 2007 | 11:26 PM
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Well, if you go flat top (most common) you will have 10.4 CR (same as an LQ9). What CR are you targeting?
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Old Jan 1, 2008 | 12:25 AM
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10.5 C/R is around what i am trying to get. you know where i can get them at?
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Old Jan 1, 2008 | 07:07 AM
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i think your going to be closer to 10.0 with flat tops and 317 heads (70-72 cc) you would pick up a little with an overbore, but not much, maybe .1
wiseco shows 10.4, but with a 4.100 bore-the high cc heads are what you will be limited by
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Old Jan 1, 2008 | 12:23 PM
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You need flat top pistons, this will put you at 10.5, same CR as the LQ9. The Lq9 is an LQ4 with flat top pistons and it yields 10.5 CR.
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Old Jan 2, 2008 | 08:47 PM
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okay. i was reading the thread about brands that are out there. any suggestions?
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