RWD Pete

Most people will tell me to do 1000+ miles of gradual running in before i start to tickle her, now as far as i am aware the only part of my engine to actually bed in is the rings to the bore? so surely after say 60-70 miles of progressive boost the dam thing should be bedded in ready for a oil change?

Obviously no silly boost untill fuelling etc checked.

Love to hear the pro's views on this.

On my last build i covered 500 miles steady away gradully building rpm etc and i got talking to an old rally driver at croft, i said do you think i am run in now after this amount of milage?

He said is it running? i said yes.... he then said right its fucking run in lad

Suppose his point is rally teams dont cover a 1000 steadys??

Jasesapphy

iTrader: (1)

Rally drivers dont expect engines to last 50K though

bud-weis

my own way of doing it is;

20miles of giving it a decent blast ( no more than 4k but with a bit of boost, say 10psi on a T34...little less on a bigger blower).

then drop the oil and change it for some half decent oil.

a couple hundred miles of varying revs and load but obviously not labouring the engine, still not too many revs.

Change for preferred oil then thrash the tits off of it

Check for any leaks, loose bolts (especially on manifolds, alternator mounts)

if good then enjoy

if it wasn't me paying then i'd probably just give it the 20 mile blast, then go mad after that.

rapidcossie

Im running new rings etc in at the mo and will be doing 1000 miles under 4k with practically no boost.

will be varying load on the engine as the miles clock up tho but nothing more than half throttle.

RWD Pete

Ha sthis been advised from your tuner?

Or you simply being cautious bud

RWD Pete

This is where i am up to now, gonna give it another 100 on 10 40 semi then get the silkolene in and set it up

Gordon1

allways a hard one as most say 1000 miles just to cover there back
but if i build an engine and mapping, i will do about 20 miles on dyno and then about 100miles on road
then start mapping
(there is oil changes and check over in that too lol )

silky16v

iTrader: (1)

why oh why are running practically no boost, when ford first released the cosworth do you think they told the new owners not to get the car into boost????

boost is required to bed the rings in properly END OF!

Gordon1

yes but no one thinks this lol

col cos1

iTrader: (5)

i done 1500miles on standard injectors/chip on shitty oil couple of changes

then whacked in the greys/chip in ava car park before they ran it up to 30psi and the t4 was glowing hot

no issues so far

NEEDFORSPEED

goodto hear different views

rapidcossie

I doing what the engine builder told me to

worked fine when I ran it in last time.....aint short on power is it?

JTECH James

iTrader: (13)

i use boost...10psi,mineral oil, and dont rev over 4.5k for 1thousand mies...

BRAMMER

iTrader: (23)

I've done 650 miles on my new engine.

At 500 the oil was dropped and i used 10-40 GTX

Running under 10psi and up to 4500rpm.

But i have driven the car which i was told to do, they said constant speeds and pottering around was no good, so I'm fortunate to live near the lake district so I've clocks most of the miles around their putting load on the engine and i can feel it's loser now so couple of hundred more and it's off for a set-up.

RWD Pete

Seems there's two ways ppl commonly use, im going for 10 psi under 4000 rpm for a 100 or so miles then gradual build up to rather large boost

Oh and a gallon of silkolene

space hoppers

mark shead told me 600 miles is fine as long as its run in correctly so thats wot i will be doing

stage 3 muppet

in this order to run in motor for me ...... mineral oil first cheap shitty 5 quid stuff from asda,s lmao run for 500mls gradually bringing boost up to 10-15psi after first 250miles

drop shite oil out and change oil filter . then add fully synthetic (i use silkolene) and run up to 1000 miles @15psi and three quarter throttle only occasional full throttle spurts
after that its play time lmao, oh and always worth examining oil betweeen the oil changes to check for any problems (swarfe ,filings etc) i also sift a clean magnet in the oil to see how much crap is in it this is why cheap gacky oil is used in first place !!!

as stated earlier boost is needed during running in otherwise you will just glaze the bores instead of your new rings sealing properly

and i do all my engines in this way and all good for me

tabetha

boost is required to bed the rings in properly!!
Does that mean no car can be correctly run in without a turbo ?
If you rub one piece of metal against another, with only a tiny oil film between them wear will occur, do it slow enough and it is controlled, do it too easy and the oil film will prevent a decent uniform surface occuring between the two surfaces, bedding in is only taking off any high spots.
I am at full throttle by 1000 miles, as seem too many driven like miss daisy and now drink oil due to bore glaze.
I would be at 4000rpm by 250 miles but on a light load, oil changes at every 500, but DECENT mineral until at least 2000 hard miles.
tabetha

foreigneRS

yeah, but your engine is fucked - you've got lightning coming out of the exhaust pipe