Break In Secrets--How To Break In New Motorcycle and Car Engines For More Power
YAMAHA FZ1 (Nikasil
chrome plated cylinder bores, like Versys 650/1000/300, R1, GSXR 750, etc)
Break-in Theory and a Procedure
Engine break-in by Moto Man's Ideas and Procedure, a much different viewpoint from the standard "take it easy manufacture recommendations."
This is what the Manual states:
....There is never a more important period in the life of your engine than the period between 0 and 1000+mi. For this reason, you should read the following material carefully.
....Since the engine is brand new, do not put an excessive load on it for the first 1,600 km. The various parts in the engine wear and polish themselves to the correct operating clearances. During this period, prolonged full-throttle operation or any condition that might result in engine overheating must be avoided.
....0-600 miles----------Avoid prolonged operation above 5,000 r/min.
....600-1000 miles ----Avoid prolonged operation above 6,000 r/min.
....Over 1000+----------The vehicle can now be operated normally
This what MotoMan responded to a direct email question from Uffe from Sweden, 3/2002:
Uffe writes MotoMan:
"I read the articles on breaking in procedure but there is one thing that puzzles me.
Does all this really work with a motor that has hard-wearing chrome-composite plated bores (which the FZ1 has)?
MotoMan says "The rough crosshatch pattern in the cylinder bore acts like a “file” to allow the rings to wear. The rings quickly "use up" the roughness"
Is there any rough crosshatch pattern in the FZ1 bores?
If you have any answer I would be more than happy to hear it..."
MotoMan responded immediately:
"Thanks for your e-mail!
The "break in article" was actually first started as being about the GSXR 750, which has a nikasil bore material.
The "FZ1" uses the same bore material as the R1, and that's where I did most of my break in "research".
What I mean is that you will have no problem with using the instructions of my article, because your new bike has the same material in it's cylinder bore.
The main idea is to accelerate & decelerate your bike to put a load on the piston rings.
What you said is true..... you can't hone a composite cylinder with a normal honing stone. The cylinders do have a "crosshatch" pattern to provide oil retention, and to wear in the rings, just like the older steel cylinders. The only difference is that the composite cylinders need a special diamond hone."
Sincerely, Pat McGivern ~MotoMan http://www.mototuneusa.com/