Quote:
Originally Posted by SEAsprintah
what do you all think of this guy promoting "run it hard" break-in?
http://mototuneusa.com/break_in_secrets.htm
At first I thought, any joe can post a webpage...doesn't mean anything. But I have to admit, if this guy can be trusted (which I don't take for granted), the piston photos look like convincing evidence. |
This has been around and around and around. Basically one is betting that he is always right with all engines and that his knowledge is profound. I have built up enough engines, race and otherwise to know that what he says can be taken with a grain of salt.
It comes down to who is one going to trust that knows more about any particular engine? A shade tree mechanic or the folks that actually manufacture a particular engine. If following this guys advice one has problems such as oiling, valves, burnt journals whatever is this guy going to cover the rebuild?
Here, we have had folks that have had problems breaking in a fresh engine like this guy says.
The only thing he really addresses are the ring/cylinder wall area where now that is a very minor part of lapping/breaking in a new engine. Most ring and wall materials and wall surfaces are finished to seal almost right away. It's all the other components that one need to consider with and how tight (clearances) Triumph builds their engines a little more careful lapping in is required.
The English have always built their performance engines very tight. Before Ford bought Jag if you took a new Jag out and broke it in the way this guy advocates you would end up with a seized lump of metal in about 300 miles. No lie. You could get away with this in a Chevy but not something like a Jag.
My Sprint experienced several times where I could tell it was freeing up. 700, 1500, 3500 and 7500 miles. These were the areas where I could tell things were happening. Almost like a switch was thrown.
So, do what you wish, I do and am thoroughly happy with the way my engine has turned out.
Don
