> puppy in is. My instructor who seems competent and has worked on Triumphs
> in the past says "Take that baby out and run it hard. Lug the sh*t out of it
> up a few mountains and seat those rings." Anybody have any opinions on
> 1) the best way to break an engine in ,and 2) what the critical issues in
>engine
> breakin are.
stress is :
1- do not over rev the engine ie > 4000 rpm
2- do not lug the engine for the first few thousand miles
After an engine rebuild, change the oil at about 500 miles and again
at about 1000 miles. Most of the wear that takes place in an engine
happens in the very first few miles as the engine parts are seating in
and wearing against each other, there is is crucial that all the
small pieces of metal are removed from the engine as soon as possible
ie by changing the oil frequently the first few thousand miles.
Also in the pamphlet that came from Piper when I replaced the camshaft
on my car stated not to idle the engine whih a new cam/followers
but instead to let the engine rev ~ 2000 rpm for about 10-15 minutes
upon first installing a new cam. A new cam can be ruined with in the
first few minutes if it is not broken in properly.
Personally after every engine rebuild, I fire the engine up, make sure that
everything is okay and while it is still warm go for a 40-50 mile drive,
while keeping a close eye on the oil pressure and water temperture.
Upon returning, I change the oil and filter and for the next 500
miles drive the car very gently making sure not to accelerate
hard, or go above 3000 rpm and lug the engine. I don't use the car for short
journeys so that I make sure that the engine is properly warmed up all the
time.
After changing the oil again at 500 miles, I drive it gently again
for the next 500 miles when I change the
oil again and then slowly start driving the car harder. I consider the
engine to be properly broken in when the mileage has reached 2000 miles.
I have done this on several engine and and have never had a problem with
parts wearing out premeturely.
Gerry
|