Re: [ST] New engine break-in

["Lex Offer" <Lex.Offer@xxxxxxxxxxxxxxxxxx>]

After I had my engine rebuilt due to a catastrophic failure of the #1
connecting rod, I talked to the triumph mechanic who rebuilt it.  He
told me to follow the Triumph Breakin schedule religiously (which I had
done when I first got the bike)  but he said to heat cycle it also
(which is something I didn't do, the first time).  In other words, don't
take the bike out and try to get through the schedule as fast as
possible (first night I had the bike I rode it 300 miles)  but to ride
for 15-30 minutes then stop somewhere and let it cool, then ride for
another 15-30 minutes and stop and let it cool.  IE Go and show off the
bike to all your friends.  Ride, stop, show off bike, let it cool, ride
to next friends house, stop, show off bike, let it cool, ride to next
friends house....

Lex "Digital Dawg" Offer
2000 Green and silver Sprint ST
1986 Honda VF1000F2
SA, TX  USA

>>> dwf@xxxxxxxxx 12/11/02 03:48PM >>>
I disagree with the mototuneusa guy!
There is more to breaking in a new engine then seating the rings. Just
think 
of all the moving parts, bearings, and sliding surfaces. All wearing
parts 
should be given a change to "break in". Heat cycling is real and has
nothing 
to do with heat treating anything. Hot parts expand, cold contract. The
mini 
high spots that are being "broken in" cause local hot spots, so it is
best if you 
let things cool down from time to time during break in.
The idea of using big throttle openings is ok. The mototuneuse guys
advice 
may work well to seat a new set of rings on a race engine that is not
going to 
last 10k miles anyway.
The factory employ smart and experienced people, that know about
engines. 
The factory has a vested interest (warranty) in having the engine run
well. 
I think I will stick with the factory recommendations, thank you.

Note, I know break-in is a religion to some people, so try not to get
carried 
away with this thread.

David W. Funk
'00 Triumph Sprint ST
Pleasanton, CA

On Wed, 11 Dec 2002 07:55:54 -0800, Rick & Joyce wrote:

>There have been many examples of excessive oil consumption on
>engines where the factory running-in limits have been strictly
>observed.  If you want the rings to seat properly, suggest you
>read http://www.mototuneusa.com/break_in_secrets.htm 
>for some insight as to why you should be visiting redline right
>away!
>
>HTH,
>-Rick in Oregon
>'01 Sprint ST




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