mattdoyle

am picking up my 98 wagon tomorrow from the maindealer after it has had a new shortmotor/clutch/gearbox(£7.5K)replaced after it was stolen.
There are two schools of thought on the running in process:
under 4k revs and constant speed variation for the first 1000 miles

or just drive normally(ie briskly) from the start as this 'seals' the rings better.

Any thoughts on this would be most graciously received.

regards

Matt

P.S
I asked the dealer if any special 'thinner oil' was being put in for the first 1000 miles, but he said no, normal oil is fine.

mattdoyle

see previous post, any info welcome

homer lawtey

Hi,

The advice on engine running in that I took is generic.

1. When first starting the engine, run to 2000RPM for 20 minutes checking for leaks.

2. Drop the oil and filter, inspect, replace with new oil and filter.

3. Whilst the engine is warm, take it out and give a bloody good thrashing through all the gears, at full throttle and all through the rev range. This will cause more pressure in the cylinders, therefore blowing the rings out into the bores with more force, creating a better seal once the honing finish has worn off.

This was the method I used and my GTO motor has been fine since. I know some guys who have taken it gentle running in, and their motors smoke badly as the rings don't seal very well.

Steve

PS the dealer should have done steps 1 and 2.

mattdoyle

bttt

SCOOBYBALL

THATS A GTO MATE NOT AN IMPREZA IDE TAKE THE ADVICE OV THE DEALER
CAUSE THAY R THE PEOPLE THAT NO BEST


SO MATT STICK TO WHAT THE GARAGE HAVE SAID IF U NEED ANY MORE ADVICE RING THE DEALER NOT A GTO OWNER

SiDHEaD

Group-buy on caps lock keys anyone?

Andy

RichWalk

Dont know specifically about Scoobs- however my bro a sales mgr always gives his new motors stick and they normally turn out to be respectively faster than cars driven in to dealer recmds..

SCOOBYBALL

the reason for this is when a SUBARU is brand new the ecu learns the way u drive thats why from BRAND NEW they give them a bit ov stick
NOT WHEN UR ENGINE HAS BEEN REPLACED ETC

MorayMackenzie

SCOOBYBALL,

Just out of interest, where have you learned so much about the running in process? You seem so confident about what you have written.

Moray

SCOOBYBALL

lets just say that 4 years working for subaru is enough to no about the product

MorayMackenzie

May I ask in what capacity you have spent 4 years working for subaru?

SCOOBYBALL

IM A MECHANIC FOR A SUBARU DEALERSHIP

homer lawtey

Scoobyball;

"....The advice on engine running in that I took is generic...."

Hence there was no need to shout!

The idea of thrashing a new motor is bugger all to do with the ECU learning anything, it's to ensure a good amount of pressure in the cylinders to "blow" the rings into a newly bored/honed cylinder wall. This way they have a chance to wear into the shape of the bore before the fine honing pattern is worn away. There is plenty of info on this subject on the net, I'll try to dig up my old links.

Steve