Running in new engine techniques

[ukjules]

Tis fascinating .
I am going for the mid way .... basically what said on here.
assertive town driving style after engine warm.
engine braking and not being sluggish on engine.
and gradually building up.

[I must do a compression test tomorrow for analysis)

be good to compare to my old engine test )

Dont think there is anything terrible wrong with it
bar a lack of care (due to time) when doing a previous
top end rebuild ... stripped threads , gaskets in poor state
and I recall lapping valves myself .
but it worked and works now ! just had an oil leak.

 

[Rob S.]

Interesting. Like he said, improved metallurgy. Also like he said, it wasn't tested on a high performance engine.

Question: Are new rings, even pistons considered a 'top end' job?

 

[ukjules]

70 miles and 3 heat cycles running it in done.
(wet and cold here in uk now!)
Used method on here (assertive town riding and engine breaking)
Will gradually increase from now and chuck oil
at 500m and check valves and re torque.

no issues, no leaks , re torqued head to spec.
More power than old engine.

[over xmas I'll pull to bits the old engine
but take readings as I do , as I wanna know
what is wrong with it] look forward to that as
xmas reading.

 

[GS1150Pilot]

Very cool, Jules. I like your attitude.

 

[ukjules]

No need for books to read or films to watch over xmas period
as daily there will be updates on the old engine
renovation ... by someone who has never split
a crankcase before.

I can barely wait to start the novel .

I can foretell it will be rings , gaskets
and poss stripped threads not allowing
correct torque.
the main issue top end.
I refuse to believe I ballsed up the valves .