Hi everyone,

I have done the usual search and google has come up with some very conflicting information.

I am just about to put new big end bearings and full set of piston rings into my 2.0 blacktop. What I would like to know is how to run in the engine correctly. So, how do you guys do it, and if possible a reason for the method you use. I understand that there seems to be a bit of a grey area as to exactly the right way, so looking for methods and reasons please.

P.S Lets not get into a slagging match about who is right and wrong, just a discussion on methods and reasons.

Thanks guys.

Andy

[Edited on 2/5/16 by AndyW]

quote:

---

Originally posted by AndyW
P.S Lets now get into a slagging match

---

quote:

---

Originally posted by SteveWalker

quote:

---

Originally posted by AndyW
P.S Lets now get into a slagging match

---

I assume that you meant "Let's not"

---

From what I have read, use cheap oil or mineral oil to run it in. Varying load and engine speed AKA just drive around but don't cruise for long periods of time. Don't be afraid to go full throttle high RPM after a little while. I believe that the rings need higher cylinder pressures to force them against the cylinder walls for good sealing.

However after I build my turbo bike engine, I fired it up to make sure it was working, then trailered it straight to the dyno for full power runs and have beat the snot out of it ever since.

Have you changed the cam & followers? If so, everything changes...

http://www.burtonpower.com/tuning-guides/tuning-guide-pages/camshaft-fitting-timing.html

Look at the bottom of the page for running-in instructions. I really impressed the neighbours when I did that for 20 - 30 minutes!

I like this method:

https://www.youtube.com/watch?v=26X_s28ilYs

So, no, you really don't need to baby it after making sure everything looks good!

Car factory's start the engine and rev the nuts off them if every gear on the rollers....