Need help with rebuilding my 2003 350Z
#1
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Join Date: Oct 2016
Location: Nashville, TN
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Need help with rebuilding my 2003 350Z
So I have an 03 6spd with 140k miles. She spits out plums of blue smoke. I can burn through a quart of oil in 4-5 days if I'm driving hard. So I plan on getting it rebuilt. Here's my question: is it worth it to go ahead and actually build the motor? If so what route should I go and what parts do I want? Let's just say I'm a dummy when it comes to engine internals so treat me like I'm stupid when explaining. Basically I want to push more HP and fix the valve seals/ stem seals/ piston rings or whatever combination of all the above is making it smoke so bad.
#2
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Use the search bar and read builds and rebuilds from other members on here, there's almost 14 years of experience and information on this forum with the Z/G. Then after that, make an educated decision on the parts you need with your goals and budget in mind.
If you are doing a basic rebuild, they sell kits that are OEM standard, I believe Z1 Motorsports has a few selections, or you can buy a shortblock with forged rods, pistons and race bearings preassembled. Really depends on your goals and budget like I said.
If you are doing a basic rebuild, they sell kits that are OEM standard, I believe Z1 Motorsports has a few selections, or you can buy a shortblock with forged rods, pistons and race bearings preassembled. Really depends on your goals and budget like I said.
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travlee (12-15-2016)
#4
350Z/370Z Tech Moderator
MY350Z.COM
MY350Z.COM
Bluestream said the magic word: GOAL.
Not "cool", not "so and so has 13.5:1 pistons so they must be good", not "310 degree cam cuz it sounds so cool when it lopes".
Think "street motor", "dual purpose street & track", "low-to-mid-range torque", "rev to rival a Cuisinart"... those sorts of things; essentially the operating function you want from your motor and build from there.
Personally, unless you're really going for a ba**s-to-the-wall NA (or prepping for FI) build, I'd keep it close to stock.... up the compression half a point, mild cams, good head work, good lubrication system. Reliable, and ready to run.
Not "cool", not "so and so has 13.5:1 pistons so they must be good", not "310 degree cam cuz it sounds so cool when it lopes".
Think "street motor", "dual purpose street & track", "low-to-mid-range torque", "rev to rival a Cuisinart"... those sorts of things; essentially the operating function you want from your motor and build from there.
Personally, unless you're really going for a ba**s-to-the-wall NA (or prepping for FI) build, I'd keep it close to stock.... up the compression half a point, mild cams, good head work, good lubrication system. Reliable, and ready to run.
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rustyschopshop (12-18-2016)