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LS vtec cammed -- piston Q

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Old 06-19-2008, 07:10 AM
  #1  
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Default LS vtec cammed -- piston Q

Ive got a b18b with a b16a head with blox dual springs, titanium retainers, and Blox HSL cams. Now i was hearing that the Stock LS pistons have very small valve relief spots to begin with. Now my question is, would i be fine with puting my cams in or would the valves hit the pistons? yes...no...?

Any suggestions?
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Old 06-19-2008, 08:02 AM
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Default Re: LS vtec cammed -- piston Q

Lift and Duration of cam will help you out.
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Old 06-19-2008, 09:15 AM
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Default Re: LS vtec cammed -- piston Q

Heres the specs

http://lib.store.yahoo.net/lib/twincamtech/typehsl.jpg
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Old 06-19-2008, 02:45 PM
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Default Re: LS vtec cammed -- piston Q

bump
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Old 06-19-2008, 04:41 PM
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Default Re: LS vtec cammed -- piston Q

As long as you using stock LS pistons you'll be ok.
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Old 06-19-2008, 05:53 PM
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Default Re: LS vtec cammed -- piston Q

Yea the whole prob, i HEARD from a couple sources saying the LS pistons dont have the valve spots for cams because its not used to the whole vtec ish, anyways thanks.
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Old 06-20-2008, 12:20 PM
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Default Re: LS vtec cammed -- piston Q

playing the guessing game isn't gonna work...only real way to find out is to degree the cams in and clay the motor
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Old 06-20-2008, 01:19 PM
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Default Re: LS vtec cammed -- piston Q

Well i dont have the head on yet, i want to get what i need to fix the problem before it happens, the link i posted above has the degree
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Old 06-20-2008, 01:23 PM
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Default Re: LS vtec cammed -- piston Q

If you are using stock LS pistons when you don't have to worry about valve reliefs. If you had ctr pistons that would be a different story. That blox cam you posted isn't aggressive enough to worry about it. But if you really worried about it then clay the motor.
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Old 06-20-2008, 01:45 PM
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Default Re: LS vtec cammed -- piston Q

Cool thanks, if i did want to upgrade to forged pistons, what exactly would i look for then?
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