Ack...sorry meant to put this in general...please move as necessary..

Ok, disclaimer: I know I was a bit ignorant in buying my Z...here's my question:

What negative impact to the engine takes place if you ignore the break in period?

Background:
I test drove the performance model; had about 120 miles on it. I brought it up rapidly on several occasions to high speeds. The salesman also had few anecdotes about how some other test drivers really put it through its paces.

I asked the guy about a break in period, and he said he didn't know of any. I was too trusting, figuring not all cars needed one (never bought a new car before). They were out of owner's manuals (they still haven't sent mine to me, about to call their GM now). I've been leasing it for about a month and plan to buy it out eventually (maybe a year).

 

Most people recommend the standard 1,000 mile break in or you will have catastrophic damage at worst or bad rings or such earlier than it should happen.

However, I don't believe this and neither do most of the engine builders that I've asked. The purpose of a break in period, or I should say one of the theories, is to seat rings, clean up debris from the build process, seat valves, and whatnot. I and many of the engine builders I have spoke with believe that modern engines need so little break in that its not worth thinking about. With my inferior Sentra Spec V I let it rip right out of the dealership parking lot and so far I'm getting better mileage and better performance than most people on the Sentra forums.

 

nice discussion of it here:
https://my350z.com/forum/showthread....threadid=40921

 

yeah i raped my z from after 200ish miles and she pulls on all z's among other weaker breeds..

 

Guys, thanks alot for the responses. Doesn't sound like too huge a concern but if I buy this thing out its gonna be in the back of my mind....especially if I pick up a tt.