how to run in a new build?

[bmw2101]

I have a b230A engine, its had a hone, new mahle rings. Head is used apart from its been apart checked, and had one seat and guide. I have filled it with millers comp running in oil and tomorrow was going to start it and let it warm up.


my friend is saying, dont do that as the rings will glaze over, you need to jack it up and put it in first gear, go threw the gears to put some kinda load on the engine.


Whats the best way or a good way for a b230 engine. thanks

[quattro]

If you google this subject you will see articles saying that you shouldn't be too soft on the engine.
Here's one exampel https://www.thumpertalk.com/articles/en ... know-r707/

Personally I think this is good advice

[bmw2101]

thanks

i was always told to be very careful with it, but it seems wrong.

i was unsure as the b230 i have has a heavy flywheel, and just presumed it being a "road" engine it would need to be careful.

[quattro]

Yes, you SHOULD be careful - as in carefully following the process of letting the engine warm up thoroughly and in following the described pattern of alternating between loading the engine and letting it coast. The rings need to be seated, regardless of if it is a road or a race engine. Treating it softly will not accomplish that.

The web page I linked to above refers to bike engines, but the process is the same for car engines and there are pages to be find describing that.

[Matti johansson]

no matter how you do it the rings will be seated.
but rings seal under pressure. so a good amount of power is not wrong.

BUT these b230 i have seen all variants, and they all work.
just go out on a normal drive but without lowend-torque-driving.

these engines are very forgiving!! just run it!!

i always follow the builders advice on run-in.
but i have had all fron run it 4 hours, to run it full from beginning in the dyno. and all of them comes to the same result.

just go for it.

/ Matti

[Jens Gustavsson]

Hej inkörnings frågor är alltid svåra att svara kort och bra på men om du har en motor som redan har en bra tune i sig med tändning och lamda mm så varmkör den på tomgång eller lite låg belastning sen kan du stegvis belasta den lite mer och mer ganska direkt så ringarna får lite tryck mot blocket.

men beror på honing och hur den är tunad och hur bra koll du har på hela bilen.

jag föredrar att köra in motorer i dynon men de altenativet har ju inte alla.

jag bruka också säga att det är bra om man är minst två så nån kan kolla efter lekage och sånt och en som kan kolla i datorn hur lamdan ser ut och justera in den direkt motorn stata om det är en ny motor utan nån riktig grund map.

en B230 behöver ingen inkörnings olja bara nån bra vanlig olja. en B20 därimot med ny kam och lyftare behöver en inkörnings olja som är gjord för flattapet kamaxel med mycket zink och lite tvättmedel sina första timmar. typ Driven BR30 Break In oil sen en olja som vår Cougar 40 racing olja

mvh jens