If I got a new bottom end from the factory, how long should I drive it gently for before beating on it?

 

couple hundred miles or so

 

I have heard a lot of different things. I'd say around 400-500 miles, maybe a little more even to be safe.

 

2000km of smooth driving....That`s a lot but the breaking in period decides almost everything what the engine is able to perform...
Better kick it a little too late than too early

 

heh, i hadn't realized how much this question went away now that the ITRs aren't made anymore...kinda funny. Just make an effort to heat cycle the engine for the first 500-800 miles, don't let the revs stay in one place for too long (I.E., mix it up on the highway.), and gradually raise the redline.

 

 

Damn... that thought makes me sad...

 

First 100 miles - don't rev past 2500
First 500 miles - don't rev past 4000
after that increase revs every 100 miles by 500 rpm (varying speed driving is best)

I wouldn't redline it until you have about 1000 miles on the bearings

I don't think you can make the break in too long. Everybody's different.

 

That would be tough for me to do...the ITR would be as fast as a geo metro shifting at 2500 rpm.

But I agree, break it in properly and don't rag on your car when the engine is cold...your motor should last a long time following those two simple rules.

Maintenance wise: timing belt, oil and valve lashes...doing these three on schedule will keep that motor running strong.

 

Yah, thats why the cars don't come with 0 miles. I wonder what they really do...drive the snot out of them or just cruise around for a lil? Hmmm

 

I didn't ever rev past 4k during my 1st 1000 miles. I hit VTEC the first time when I got my intake at 1400 miles. And boy was that some FUN!

 

The lowest mileage ITR that I have ever seen from the dealer was 14 km...which is approximately 9 miles.

 

2000 miles then start beating it up.

 

I got my ITR with only 6 miles.
I did take it slow untill I past 500 miles.

 

HA!, I pulled away from the dealer in a cloud of tire smoke and never let go scince and it only had 12 miles on when I picked it up on 11/17/00 @ 7:15 pm.

And if ya don't beleive me, ask my Dad and my freind Pete who came to drop me off and take a look at what i did to myself (buying a ITR).

 

You want to know what they do..........?

A mate of mine used to work for BMW UK as a body shop Tech. They used ot use all the M's to get from one side of the workshop to the other to go fetch the drinks at break. Also they had a massive car park where they stored new cars and there was a fight to get there early and donut the M5's. One M3 was left with less than 20 miles on the clock with metal showing on the rears....does that give you an idea????


[Modified by luke, 1:09 AM 2/16/2002]

 

Here:

Engine Break-In (1,000 Miles)
Use a Honda engine oil filter ONLY!!!
Use a 30W, non-detergent, non-synthetic engine oil ONLY!!!
DO NOT take the engine over 3,500 RPM during the first 200 miles of operation. You can increase the maximum engine speed by 500 RPM for every additional 200 miles of operation.
DO NOT operate the engine in a "steady state" mode (no open-road driving).
Change the oil and filter after 1,000 miles of operation. Synthetic or non-synthetic engine oil can be used. We use, and recommend Mobil 1.
Use Honda engine oil filters ONLY!!!

 

I think it'd be wise if they hired only grannys to do the break-in driving

 

LOL...I sure hope the previous owner of my car didn't do that...hehe

 

From the Acura dealer showroom:

Brake in period: 600 miles at no more than 4,000 rpm. After that, gradually increase rpm shifts.
Complete brake in and settle down parts: After 15,000 miles, then can use synthetic motor oil.

(Advised by Honda technicians)

Of course, when you have a Type R in your hands, you forget about these recommendations sometimes he he

 

The break in time is exactly 5.4 seconds after your front tire hits the road at the dealer. Unless your me, I dropped a strip pulling out of the parking space.

 

damn... i vtec it the first 200 miles on my car.. oPppss..

tjtruong~hopes nothing goes wrong.......30,000miles and going strong ..

tj

 

I had heard this from many sources. Anyone know what's the reason of it?

 

When I got my car new I took it easy for about 1000KM. No VTEC at all. Also I did not travel above 120Km/hr, the car didn't sound right.

After 1000km, I let go of the rules and the thing got stronger.

I switched out the motor oil at 3000KM to track the car, then switched out the oil again after the event, then switched out before dyno at 5000KM, then out again to track, then switched out for a track session at 7000KM, then out again, then finally synthetic at nearing 10000KM.

I've noticed no oil burning after the switch to Mobil 1 5w30. I was using Castrol 5w30 mineral oil before the switch to synthetic.

170whp stock with AC.

 

Sadly, i could'nt pass the break in test without redlining it at least afew times before i hit 1000kilometres.