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LQ4 piston to valve clearance

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Old Jan 25, 2011 | 03:36 AM
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Default LQ4 piston to valve clearance

I have A 02 lq4 I did a cam swap and didnt check the ptv clearance, the engine is all together and installed in the car but still have a bunch of work left to get it running. The heads havent been milled and has the stock dished
pistons the cam I used has 230/236 duration @50 611/612 lift and 116 lsa

Do you think I will have problems with ptv clearance?
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Old Jan 25, 2011 | 04:50 AM
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Originally Posted by Novaray64
I have A 02 lq4 I did a cam swap and didnt check the ptv clearance, the engine is all together and installed in the car but still have a bunch of work left to get it running. The heads havent been milled and has the stock dished
pistons the cam I used has 230/236 duration @50 611/612 lift and 116 lsa

Do you think I will have problems with ptv clearance?
You ** should ** be ok.
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Old Jan 25, 2011 | 01:12 PM
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Ya I wish I would of checked it I had read a post were someone installed a larger cam in a LQ4 and didnt have any problems so I didnt even worry about it when I put the engine together
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Old Jan 25, 2011 | 01:14 PM
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Originally Posted by Novaray64
I have A 02 lq4 I did a cam swap and didnt check the ptv clearance, the engine is all together and installed in the car but still have a bunch of work left to get it running. The heads havent been milled and has the stock dished
pistons the cam I used has 230/236 duration @50 611/612 lift and 116 lsa

Do you think I will have problems with ptv clearance?
Tons of room, unless the cam was installed with some stupid amount of advance put into it, or tc set was installed incorrectly!
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Old Jan 25, 2011 | 01:41 PM
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Originally Posted by JPH
Tons of room, unless the cam was installed with some stupid amount of advance put into it, or tc set was installed incorrectly!
Thats what I wanted to hear the timming chain is installed correctly so I dont have to worry about that.

What is the largest cam that has been installed in a stock LQ4?
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Old Jan 27, 2011 | 03:34 AM
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does the LSA affect PTV clearance?
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