I have a 2003 Nissan 350z with 55,000 miles?

Question

I am scheduled for my 60,000 mile service soon. I think they only change timing belts, and flush out the transmission fluid, and maybe a few other fluids.

My question is this, for the ones that know, what is the best thing I can do to make my engine perform as though it was new again?

I heard maybe a "port-and-polish" service to clean out the inside of the engine, and change all the tubes & o-rings, than the 60,000 mile service would make the car run like new again.

Is this true?

Answer 1

You know, the 2003 has a recall for the tranny. They can probably swap you out with a 2004 if you can say ur gears keep popping out. Im part of a 350Z club in my area, and many people have gotten their trannies replaced with 04's b/c of issues with the 03 ones. Plus, if the guys are nice enough, they can install flywheel/clutch for either free or cheap price since they will replace the trannie for free b/c its under warranty. Do it soon.

Answer 2

VQ35's are equipped with timing chains. They're designed to last with the car/engine. Timing belt jobs are time consuming jobs and are one of those "oh man I have to do this again" types of things.



As an independant mechanic, I'd advise you to just change what you need. Check all the fluids, top them off, see if any are discolored and check your spark plugs, etc.



Perform new again? Full major tune-up or an engine overhaul. If I remember correctly, Z33's came equipped with iridium tipped spark plugs(roughly 100k mile intervals), in-tank(attatched to pump) fuel filters,and coil on plugs(no spark plug wires or distributors).



A porting/polishing job is also extensive. You're basically porting the intake and exhaust ports on the head. Basically means, tearing your engine apart, removing everything, and making the ports bigger and smoother for better flow. Power increase yes, usually requires tuning afterwards.



My advice: Just drive it. Chances are, your engine should be okay until it starts to run funky.

Answer 3

Because mass-produced parts, including engine components, always have imperfections from manufacturing you could end up with slightly better performance from the engine than when it was new. Still you'll need to look at the rest of your drivetrain to return to original power, certainly your clutch and transmission should be given some consideration.



Automobiles lose energy as it goes from the gas tank to the tires. Over time, each of those parts will experience some wear and tear.

Answer 4

i'd ward off it in my opinion. I tend to be anal about little subject matters that pop up right here and there. The 370z is popping out next 12 months maximum in all probability. which will finally reason the costs of the 350s to come back down somewhat. $12k and certain no assure. you probable can could interchange the tires and brakes. Sensors usually flow after 60k miles, different issues flow at 100k. I say it truly relies upon on how meticulous the previous proprietor became. Did they save the motor vehicle in a storage, wax it always, park faraway from carts of lack of life.. ;) nonetheless i'd attempt to get them all the way down to 10-11k... i am hoping you do not stay contained in the northeast too, because in case you do you'll need some snow or all season tires on there even as the elements receives undesirable. you does no longer trust the shape of threads i have considered on line of persons who totaled their Zs in undesirable climate because of the tires mixed with the abundance of capacity. Get someone who's knowledgeable with those autos which could help you verify it out once you're unclear. per chance ask someone from an section talk board, or a buddy who's a mechanic?

Answer 5

your 60k should cover anything that you can do to make it run better it will never run like the day it was built wear and tear and all. port and polish is something you would do if you wanted to increase air flow which in turn increases power. and im pretty sure your car has a timing chain not a belt.