4d_ef_bucket

put in regular oil

let it warm up for a half hour

change oil and your done

beansandrice

Thank you all very much guys/gals! I have an apointment with the dyno and I have put it off to break it in correctly.

honda-Tech FTW!!

turbohatchBnuts

good info i just rebuilt my d16 now i got a better idea of how to break her in. good thread beans and rice. thumbsup

Eighty-Nyne

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

beansandrice

I posted that link previously but thanks!

hatcht9x

Bambam posted the following method in his B20Vtec How-To:

Oil changing schedule:
Startup - 30w non detergent, change after warm up
after 20 miles - your favorite non-syn
after 100 miles - your favorite non-syn
after 500 miles - your favorite non-syn
after 1000 miles - your favorite non-syn/synthetic (it is now safe to run synthetic)

You should stop seeing metal shavings in the oil after the 100 mile oil change. I strongly recommend using a magnetic oil drain plug for freshly built motors. You don't want all those shavings being pumped to the bearings, cams, or splashing on the cylinder walls...bad. Don't worry though, they will be there, no matter how close the clearances are.

Now for the break in. Try to vary the revs as much as possible, with alot of short blasts. It is very important that you let the engine "brake" itself by just letting off the throttle and letting the vehicle slow down on it's own, while in gear. This creates a vaccum in the cylinder and forces the rings outward, which wears down the peaks in the cylinder's fresh hone. Do this for the first 20 miles, and then proceed to beat the **** out of the motor, up to it's maximum rev range, as long as it is tuned accordingly. As long as the bearings are within spec and the rod bolts were torqued correctly, there is NOTHING to worry about.

I guarantee you WILL NOT burn oil using this break in method. If you do, you probably have leaky valve seals or bad rings/cylinder hone, or maybe possibly even other major problems with alignment of the sleeves themselves.

d16a6biuld

I just finished Reading mototuneusa.com page and was wondering if this Run it hard and Not easy really is the better way to break-in an engine?

Eighty-Nyne

Been dyno proved many many times.

d16a6biuld

And i also Read that you should you Not use synthetic Oil when breaking in an engine? If so, can some1 explain the reason for this?

sde780

6k-1k rpm decels in 3rd, then rip on it and change the oil. mine is running strong 7 months after breakin

beansandrice

I thought the same. But "APPARENTLY" it is way to slippery and will over glaze the cylinder walls causing compression loss.

futureracecar

let it run fer half an hour check fer oil leaks and then go do a big *** burnout haha jkjk

beansandrice

..... Nah homie.