Running In Procedure

[Paul_13 212 1 Cars]

I've got some of that Millers running in oil, worked with Ryan so thought i'd use the same.

 

I thought the same about the flush. Only helped on my diesel really, quietened it down loads of s*it come out and the oil stayed a bit cleaner (for about 10 mins). Then went black again.

That was using the additive not the actual oil.

Edited September 2, 2011 by Paul_13

[Cameron 16]

But that was for an engine that had done some significant mileage, not a rebuild?

 

I've never been keen on using flush additives tbh, it breaks down oil deposits etc but all that crap then hangs around in the engine until you change it, and like you said after a few miles it's back to looking dirty again.. just a waste of money imo.

 

Millers running in oil is just mineral oil isn't it? How much does it cost?

[Paul_13 212 1 Cars]

Yes high mileage 140k so only just run in on the diesel

 

Agreed not going to bother using it again. Pointless on diesels.

 

Around £30 so about the same as a bottle from halfords (not on trade).

Yep its mineral.

 

I shouldn't of glazed the bores by now I think, had it running for 5 mins in total after 3 brief starts

Edited September 2, 2011 by Paul_13

[Cameron 16]

5L of mineral oil is like 15 quid in Halfrauds though isn't it?

[Paul_13 212 1 Cars]

No verging on £25 last time I looked I think (not on trade) might be thinking of something else.

 

Oilmans selling techniques brain washed me

[welshpug 1,626]

bog standard local motorfactor oil will suffice, about £12, check tescs aand asda too

[Paul_13 212 1 Cars]

After ive done the 50 miles to bed the rings in and dumped the oil, does it have to be mineral oil I put in for the next 100 miles, or can it be cheapo semi synthetic stuff?

[Paul_13 212 1 Cars]

Only mineral oil I can find at the mo is diesel oil in halfrauds

[johnhenry 20]

Evening/Morning all

 

i have a rebuilt motor coming back from miles over the next day or so. having read this im just trying to establish the best was to bed it it. It has had new rings, and the head rebuilt (would need to clarify is the cam has had attention) but would assume the cam and its surroundings need to be bedded in.

 

i think its because its late/early im struggling to work out which do i do first, and with the whole bedding in the cam idea.

 

Bed the cam in - run it at 2000-2500 standing still not driving - isnt this a higher idle which is to be avoided? of is it run the car around at that sort of rev range?

 

Bed the rings in - this comes after bedding the cam in?

- the full throttle/snap off test got it.

 

Hope this makes sense? brains abit like soup :/

 

cheers

John

[Miles 331 1 Cars]

Don't even think about the cam, it's got nothing to do with the build, As it's had new shims and thats it, The bottom end as I have always said is the most important here, Nice and gentle bed's the bearings in well as abuse can make a mess of them

[johnhenry 20]

then thats what ill be doing! thanks miles. sorry, nice and gentle it is

might be back today - like christmas day!

[GilesW 41]

I've had many a debate wbout running in over the years, however this thread says what I've always done (following expert advice).

 

Miles - think I'm confused by this engine you speak of.

It has new rings, shells (bearings), and a reshimmed cam.

 

Are you saying the shells need running in and this is in 'preferance' to bedding in the rings?

 

As I say - think I'm confused as any shells I've thought worth fitting will not need running it, but the rings certainly will (and the cams not).

[Cameron 16]

Which is easiest to replace, a set of bearing shells or a set of rings?

 

As long as you have good oil pressure the bearings will not suffer from a few cycles of hard acceleration.

[stu8v 68 1 Cars]

Just drive it normal, job done. varying the load and rev ranges.

 

Treat it with some mechanical sympathy ie dont labour it and dont hold it on the limiter etc etc and it will be fine.

 

 

Now my mate ran his impreza in at 8000rpm rev limiter and 1.8 bar of boost...........................................

 

And that was after being told to drive it steady for a few weeks??? His std build cost over 2 grand...!!!!!!

 

Yeah its still going and makes good power, I guess you takes your chances either way.

 

 

I always go with the take it steady approach, well for a while. lol