I should be getting my Saph back later today.

The engine has had a top end rebuild. new valves, grpA headset, new cambelt, tensioner etc.

My question is this, whats the best way to run the engine in? take it up the motorway for a long drive and put 500 miles on it each way?

or round town driving?

I have heard its better to run it at different speeds etc rather than at one constant speed on a motorway.

anyone shed any light please?

 

i thought engines only needed run in if the bottom end was rebuilt

 

Nothing. There's nothing to bed in. Normally when running in, it's the piston rings against the bores you're concerned about.

Or you could just take it down the dual carraigeway, boot it off the roundabout, and stick it into the armco.

Oh no wait. You've already done that

 

well hopefully someone will be aswer that too

 

Pon.... helpfull as ever


come and get your laptop before i sell it

 

I keep meaning to!

Pop round Thursday?

 

As said i running in is only usually for bottom end rebuilds for the piston rings etc.

Get out and give it a hiding mate

 

are the cams new?

if so they should be run in at 3000rpm or so for about 20 mins.


Other than that, as Pon says, no need to run in at all.

 

Chip i have heared this a few tims about running in cams! But how come new cars dont go through this routine? or do they? And its for the cams to hard i suppose, or somthing like that? Wont they just harding during the running in period if your taking it stead for the rings etc?

 

Just like rings really mate, just allowing the cams to bed into the followers.

Ive no idea if they run them up in the factory to do that or if they just rely on the normal running in process they typically instruct you to observe.

 

Fair enough

 

Nope, cams arent new.

cheers chaps


Pon, wont be home till about 9ish on thursday. no probs if you wanna come over then

 

so with that in mind then... i wouldnt need to do the rubbish oil thing for a few hundred miles before changing to a good oil?

 

dont they Run cams at 3k rpm (or whatever) for a while to
'work harden' them?

 

Nope, decent oil from the outset.

 

thanking you

 

Daveyboy

just so you know,

to start engine, put key in ignition and turn, if loud knock is heard, rev it 7000rpm for 5 mins, this should clear the problem, if not, turn key oppisite way, step out of car and call a taxi



after calling taxi, dont blink and think it's already there, as thats your car, not a REAL taxi

 

ignition? is that the round thing in the middle of the steering wheel?


































nob'ed

 

made me chuckle

 

 

 

 

lol @ Spiky... got any tips for the headlamps?

Good Christ Waps... do some friggin work!

 

ah yeah , good point re headlights! PM sent first class to Spiky

 

No real need at all for just a head rebuild.

However I always advise to take it easy for 50 or 60 miles or so after a fresh new head is fitted, just to be safe.

Probably makes sod all difference at all but is there just for piece of mind...

Only the need to run in when a new bottom end and the run in process is to bed the rings in, not to be done on a motorway at a constant speed.

The rings need to heat up and cool down to bed in, up and down the gears speeding up and slowing down is the best way.