running a new engine in?
Turbo Mini Forums

I've been looking into the different ways of running my 1293 turbo engine in (when its finished), i'm very tempted to go down the boot it from the start route and have been thinking about taking the engine to somewhere like in Bills 1380 dvd for them to do it? it'll be running mejajolt if that makes a difference?

any input would be helpful.

thanks

check out the how to section - benross has some sound advice in there which I just followed for my daily drive and seems to have worked well

you need to have some confidence that the engine is not running masivly lean or advanced before you go down that route.

personaly (assuming the above) i keep the revs up for 20 mins to bareak the cam in while i check every thing over and get it up to temp, then go for a drive and give a short squirt (short being the word) and then coast and repeat ad nausum .

follow this to the letter, http://www.mototuneusa.com/break_in_secrets.htm

but make sure the ignition timing andi fueling is spot on first

my plan personally is to bed the cam in like Mini13 says and then go to the rollers to have it set-up for low boost.

then its balls out normal driving, no messing around with changing before 3k Rpm etc etc. Changing the oil regularly.

Then when ive done 500ish miles back to the rollers to have it set-up on the proper boost.

i pretty much do as mini13 said. start it up and run at high idle to bed the cam in, check the engine over, take it for a drive, going on and off boost, starting easy and building up as you clock up the miles. you will feel it free up and then its good to go.

thrashing it from start seems madness! its not all about the rings sealing. by all means take the advise from mototuneusa.com (he's only built 300 engines) or take the advice of the manufacturers (built millions)

at the end of the day (what a corny saying) its your choice and your money invested in the engine, thrashing from the start may give a couple more bhp but it may also blow up the engine

I think ill do sort of as James says.

Bed the cam in, get the timing and fuelling as near enough as I can get it, put some decent miles on it, oil change then get it set up for the highest boost it can manage/I want on the rollers, then take it easy till after that until its due for the next oil change.

Purely because I cant afford 2x rolling road sessions, rolling road sessions in themselves are supposed to be good for bedding in the engine because of the various loads it gets put through.

I remember Tom saying the best way to put miles on the car is B-road driving, as its likely to be a combo of using a decent amount of the rev range from accelerating out of slower corners to cruising etc. As opposed to dual carriage way and motorway driving where it'll you'll be mostly doing 3500-4k the whole time.

Yep, fixed RPM driving e.g. motorway or dual carriageway will just polish the bores, you want to be up and down the revs using up to about 2/3rds throttle.

Mine was 100miles hard driving with not so much high revs, then it was on the dyno for 2 hours the last hour with 8000rpm limit, lol, and it was run in

I believe the DON had less miles on it before it seen 7k+ rpm

The 500+ mile thing is crap. and 1000miles is daft.

My newly built 998 went straight into service testing the Siamese Code after bedding in the cam.

Regular runs up to 6k before it had done 100 miles.

It does not seem to have done any harm whatsoever. But it was running a conservative ignition map and we had a close eye on the fueling.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

In 1962, when I was involved with race/rally minis,the fastest ones were always the ones that had been thrashed the most. This is not necessarily a good indicator of how long they lasted.

most race engine builders use different tollerances to road engines as the race engines are expected to be thrashed from new

The main thing is just don't labour the engine!

As above...keep it under load, vary the revs and change the oil.

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1/4mile in 13.2sec @ 111 terminal on 15psi

shit oil helps bed engine in

with my engine, I bed the cam bearings in, for about 10 mins, then mapped it on the rollers, this took a few hours. By the time the mapping was done we where up to 20psi and 7500rpm.

Team Racing

Sound like my kind of guy -give it a bit of kindness and then thrash it so it knows who is boss !!

i guess thats a good point with an efi engine,

you start maping at a few psi boost working across the map (rpm) and once thats sorted move up a level to the next kpa range, as a result you run the lup in at increasing pressure (power) levels.

Rollers are best as Jimbo says

On 5th Sep, 2011 Vegard said:
I stand corrected. You should know