i know i ask a lot of questions in here and im sorry for being so repetitive...

i am actualy on 320 break in miles right now and i am wanting to get tuned as quick as possible. i have been dong the proper oil changes and such.. i have read many places that 1000 miles is the accepted amount for break in miles as well as the accepted amount of mileds that you can switch to SYNTHETIC oil..

i have read other places that 500 miles is actually good enough but i didnt find out if 500 miles was ok to start puttnig in synthetic as well..

any help guys?

thanx again sorry to ask so many questions

 

All you do is pull a hole shot to the end of you driveway, and if it holds together your good. No if i were you I would go for at leat 1500.

 

id wait till 1000 myself, that way your sure the rings are set and such. getting synthetic in there 500 miles sooner isnt going to matter much, so you might as well be safe. thats just my opinion.

Landon

 

im retarded and tired... whats a hole shot?

 

i like to know also. My motor is about to come together soon.

 

**** i built my motor and went right to the dyno with it. if something is goin to fail its goin to happen anyways

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nextelbuddy &raquo;</TD></TR><TR><TD CLASS="quote">im retarded and tired... whats a hole shot?</TD></TR></TABLE>
I think he was just joking around about launching your car from one end of the driveway to the other and call it a "break-in."

 

what's a break in period

 

yeah id just wait for 1000 miles, just take a nice day trip somewhere those miles will add up quickly

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J.R. &raquo;</TD></TR><TR><TD CLASS="quote">what's a break in period </TD></TR></TABLE>

Exactly


nextelbuddy
you should be fine IMO. Your rings will have seated by now (long time ago ) if not you have some serious problems.
put around town, bringing it through the gears for a while, don't stay at a constant rpm. After about 50 miles or so bring the rpms up, do that for a while. After 100 miles get on the freeway, quickly. then get off at the first exit, and drive around normal for about 10 miles.....You should be fine to romp on it by now, just don't get crazy and redline it at every light.
My car was warmed up (20 min idle) then driven about 5 miles before it saw redine .. I just took it easy for the first 500 miles before i treated it like a seasoned engine. It's holding up just fine for me.

think about it like it's a new car, they have a "break in" period follow that and you'll be fine.

 

Just the way we do stuff but generally we stay below 3500rpm for 1000-1500 miles, after that we consider the motor broken in...

 

on a newly built motor, I would give it atleast 1000 myself.

 

yeah.. break in those rod bearings.. yeah!

 

ok so the concensus is 1000 miles.. and that the break in process isnt always all about the rings but the rod and main bearings as well.... got ya

 

There are two thoughts behind breaking in a motor.

Some say break in motor with boost and others say not.

However usually when babying the motor, 500 miles is perfectly fine. 500 miles is plenty for the rings to seat.

 

how bout switching to synthetic at 500 miles as well??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nextelbuddy &raquo;</TD></TR><TR><TD CLASS="quote">how bout switching to synthetic at 500 miles as well??</TD></TR></TABLE>

Personally, I would wait myself at least a couple of thousand but I am a wuss and don't want to waste a $5000 motor because I couldn't wait to change my oil.

 

Boost helps rings seal

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nextelbuddy &raquo;</TD></TR><TR><TD CLASS="quote">how bout switching to synthetic at 500 miles as well??</TD></TR></TABLE>

I don't know. I never use synthetic oils on any of my motors.. Only use regular Castrol oil.

But 500 miles is plenty of miles for the rings to seat, seal...

 

I broke mine in for 1000 miles to be safe, and there was still 20% leakdown. IF the motor is built correctly, a small break in period of 500 miles should be plenty, just do a leakdown test, if your 0%, you should be fine..

 

Wow 20%, that's a lot... Brian broke his motor in before the start of last season and put on ~1700 miles, (keeping the revs below 3500) after a full season of racing/street driving (he boosts up everywhere!) he's at 2% across...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 631 Teggy &raquo;</TD></TR><TR><TD CLASS="quote">Boost helps rings seal </TD></TR></TABLE>


suprdave - built my motor that had 87 break in mile before its first full boost pass. and the break-in and the first full boost pass were on the same day

held great, no smoke, car felt awesome

so i think it has alot to do with engine builder.
but the general norm i thought was 500 miles.

 

The way you should brake your motor is brake it in like you are going to drive it. So that your rings set right!

 

I think rings are set after about 50 miles or a half an hour of good variation driving.

I put about 200 miles on my N/A motor, then headed straight to Gaineville Raceway. I made hundreds of passes, and 3 1/2 years later, the motor is still kicking *** with the new owner in Michigan.

 

Now that is a break in!