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Running In An Engine

SirRacer

By SirRacer,
in Engines & Forced Induction

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SirRacer Experienced

SirRacer

Posted
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Posted

good post that, mines going to be needed to done on a dyno as im going to be running an rb30 in and obviously these dont come with a rb30det computer

i dont think running the engine in on the standard injectors and rb25de computer would work to well, correct me if im wrong however.

i was planning on taking it to a dyno and getting a base tune then using the running in guides from here. good post once again sydneykid cheers.

how many kms do people run their engines in for before applying max power. ive read in a few places 5k is whats reccomended and others that 1000kms is fine, any suggestions?

Sydneykid Grand Master

Sydneykid

Posted
Posted
which way to bathurst do you go Gary? via penrith and motorway? or though bells line with lots more hills ??

If i get away early enough (4am 'ish) I go via Bells, if later than 6am 'ish I go freeway. Traffic is too slow on Bells late in the morning, you don't get the chance for consistent, long loads.

Looking at SK's Bathurst post, I'd say 500k

Around 650 k's from first start up by the time I get to the dyno for the power tune.

:O cheers :P

justin911 Grand Master

justin911

Posted
Posted

so you didnt do the under 3-4000rpm trick at the start ??

My engine builder told me 500-1000km and that's what I did. I didn't redline it until after 100km, now has 4000 and running well.

Builder said if it was going to fail he wanted it to fail early so get stuck into it!

Abo Bob Grand Master

Abo Bob

Posted
Posted
so you didnt do the under 3-4000rpm trick at the start ??

Just realised I left a 0 out of my original post but yeah I just gradually upped the revs I was using so I probably did stay under about 3500rpm for the first 50km or so.

  • 1 month later...
huddy Veteran

huddy

Posted
Posted

interesting post

i'm about to do this on a rb24 - new rings / bearings etc... only problem is that the car is mainly a track car and not registered - i will rego it to run it in though...

has anyone else with a dedicated track car had any success with running a motor in - in as little time possible

thanks

JimX Grand Master

JimX

Posted
Posted

SK did a write-up of how he runs in engines. I don't have the link handy (do a search) but basically he does a single run from Sydney to Bathurst again, and once he's back the engine is run in properly. Not just cruising up the freeway, you need to check the details. It sounds like fun to me, I'll most likely do it myself should I ever do a rebuild.

huddy Veteran

huddy

Posted
Posted

yeah i 'was' thinking of doing a drive from SA to mildura but thats just open driving so changed my mind. now i've decided to do about 6 return trips (150km round trip) from my house to mannum in SA - goes through twisty roads but also has some open roads - so good for putting it under load etc but keeping off boost to start with

Craved Grand Master

Craved

Posted
Posted
SK did a write-up of how he runs in engines. I don't have the link handy (do a search) but basically he does a single run from Sydney to Bathurst again, and once he's back the engine is run in properly. Not just cruising up the freeway, you need to check the details. It sounds like fun to me, I'll most likely do it myself should I ever do a rebuild.

link to his write up is in my post just up a bit.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

All we did was bed the rings on the dyno.

Then get stuck into the power tune. Whatever RPM as soon as it was tuned.

None of this 4000rpm, varying loads etc etc.

My RB25 was apart not long ago actually

And contrary to popular belief, A-OK. Nothing wrong with it at all.

Similar can be said for the countless RB25/RB26's that have been done this way :)

Running in "500km's" IMO is a myth. And that myth as far as im concerned was broken as tested by my RB25

femno Grand Master

femno

Posted
Posted

If you can gain access to some cheap or free dyno time do it there. I ran my 26 in by running it to the floor in 4th at about 60kph eg 2-2,500rpm at timed intervals => temps (but not flat for the first few ks). Did this for bout 100-150ks worth n that was it.

But i guess if u dont have dyno time, try n do this on a big hill.

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