Have ya'll seen this?? Very interesting....

http://www.mototuneusa.com/break_in_secrets.htm

 

Yes there is a ton of threads on this if you search... Very controversial indeed.... I just stuck with the manuals recomendations to be safe...

TC


"There is a Very Fine Line Between "Hobby and Mental Illness"

(6 Coats Zaino)

98933-eyepop.gif

 

I don't have my G yet, so is there a temp guage or some indicator to tell you when your engine is up to temperature??

G35 Coupe 6MT / DG-G / Premium / NAV (on order)

 

Daxx, Yes there is a coolant temp gauge along with fuel level, speedometer and tachometer.....No oil pressure or ammeter/voltmeter in this ride tho.
My personal view on break-in is to (mostly) follow the owners manual. Nissan, I'm sure, has some high paid engineers to advise them on that one. lol.
Aside from that-- my guess is that these engineers know who's buying a 'performance' machine such as our G's and take into account the occasional blast to redline.
My Dad always said "It's good to clean the 'coke' (carbon) out once in a while, and to make it 'stretch it's legs'.
Food for thought.

<font color=red>GSM</font color=red> <font color=black>Silverstone Coupe</font color=black>

 

I think thats called an "Italian tune up"

G35 Coupe 6MT w/ PP & Aero
DG w/ Graphite Leather

 

Perhaps bro. We're originally from England. But I wouldn't be surprised to find out that "blowing out the coke" philosophy as typical European.
A bit old fashioned now tho, but the idea is there and a good one.

<font color=red>GSM</font color=red> <font color=black>Silverstone Coupe</font color=black>

 

My brother is an engine-rebuild mechanic, I'm a CME engineer, and this is often the topic when he and I sit around the shop at night talking with the other mechanics. The other two rebuilders (one specializes in transmissions, but still knows a wealth about engines) have 23 and 17 years experience respectively. Most of their work is done on relatively new engines, modifications, repair, and classic rebuilds post 150K miles.

Each of them has a different opinion. One says to drive it like you're crazy from day 1. One says to go easy for the first 1000 miles, then drive like mad for 500, then do what you normally do. The last (my Brother) says to do whatever the manufacturer says.

My opinion is that it's hard to go wrong with whatever technique you choose.

03.5 Coupe - Black/Willow, 6MT, Premium, Navi, Aero

 

I spoke with an Infiniti manager (da boss man) about this today. I asked him how I should break in my G when I get it and he said to just drive it exactly how I plan to drive it from the moment it leaves the lot. He said the factory runs the engines for several hours for burn-in prior to installing in the cars, and then the cars are put through some hard driving on a track. He said the only reason there is a reference to easy break-in is because Infiniti has people calling in asking how to do it and they have found that most people are more comfortable hearing to take it easy for 1200 miles. But really, with today's hi-tech engines and pretesting, he said it's just not necessary to break-in the motor like in the old days.

In other words, GO FOR IT!

G35 Coupe 6MT / DG-G / Premium / NAV (on order)

 

Yeah, the way I feel is that engines are so durable that they really don't have a break-in period. Whenever somebody asks me how to break in an engine, I just tell them to make sure they vary the rpm's (meaning don't use cruise control and don't stay in the same gear at the same rpm for a long time). Normally don't go over 4K rpm, but if you have to punch it (whether due to traffic or just to get it out fo your system), then go for it, but don't do it often and try to avoid hard driving until after the break-in period. It's also extremely important (during break-in and all the time) that you wait until the engine is fully warmed-up before you rev over 4K rpm and/or apply wide-open throttle.
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I tend to agree with MrElussive (per above). I've broken in quite a few engines on cars and snowmobiles and dirt bikes, etc. When 2 guys have the same exact snowmobile or motorcycle, then we can make some comparisons on who's unit is faster. We've seen that a break-in with a lot, and I mean a lot of throttle variation during the first couple of hours has yielded the fastest engine. We did not floor it or load the engine up with high stress demands--just a lot of throttle on, and then engine braking. Then throttle on and engine braking--very erratic and on the verge of being dangerous or obnoxious on public roads, but easy to do on a snowmobile or dirt bike trails. We did notice a difference in side-by-side engine performance.

With that said, I'm going to guess that it does not make as much difference in the modern car engine, but I'll guess that it does make a little bit of difference.

Just my observations and experience.

jjellyneck