Just wanted to share..

Cossie is now working again! Finished building the engine yesterday, complete with new big end bearings (for good measure), piston rings, honed bores, fully reworked head, including valve guides, stem seals, three angle seat cut, light removal of sharp edges to ports, etc etc.

Put the engine back into the car today, and got her running this afternoon! 500 miles of running in to do now.

Hurrah!

JJ

 

nice one jj quick work

 

500???????????id do more like 1500 mate

 

Thanks Jay!

Its funny - two things confused me - the low number of miles to re-bed in the piston rings - I must admit, she wont be seeing boost for 1k.

the second thing was the complete lack of running in oil from anywhere!

I couldnt believe it - apparently castrol no longer make it.

As such, she is being run in on Magnatec! Doesnt really feel right!

JJ

 

i used duckams mineral for my first 500 jj up to 4000rpm with 5 psi then straight on to valvoline vr 20/50 and 8 psi up to 1k then valvoline again

 

Congrats

 

i used lidl cheap snidey Ł7 a 4ltr with no probs and my car now is sweet........................lol ,and im telling the truth

 

 

I had intentions of putting cheap grade oil in it for the first 500 miles, then at the last minute, changed my mind!

Hopefully the magnatec will allow it to bed the rings in. No boost, less than 4k, and also, no labouring engine for first 500 miles.

Think Ill follow your good form, Jay, and then do the same as you for the second 500 miles.

JJ

 

Well done, will let you run it in then we can see how quick it is against mine (but dont tell si b ) dont want to tow him home again.

 

Well done mate!!!

 

ROFL - Just cleaned it, so if Sib finds out, he willl have to follow! Phil - you up to WSM next week matey? Thought I would make a rare visit to help kill some of these miles I have to do!!!

How is Si's car now it has been live mapped properly etc?

JJ

 

if you run it in like that it will smoke fairly soon!!

don't be scared of putting the hammer down a little

 

Cheers mate!

How are you getting on with yours?

JJ

 

I exspect we will go to western next week, last run out befofe the ring, to check all is well, sib car going verry well at the mo.

 

Good to know He deserves a run of good fortune!

Hope your beast is as reliable as usual (Else you can always take the Lexus )

JJ

 

So how do you run yours in then?

JJ

 

well.....this is all IMO of course, but i honestly beleive that most running in periods that companies qoute are for their own benefit...i.e it's common for leaks to appear or ancillaries to rattle loose after a rebuild..

my own method was ;

run engine up to temp on shite oil...checking for leaks etc

blast around for 20 mins or so, not hitting full boost but a decent amount of revs and maybe up to 10psi or so..

then oil change again for the good stuff, and then i did about 400 miles, gradually building the revs and boost i put on the engine (starting at no more than 4k and a few psi building right up 6.5k and about 1bar boost.

i never let the engine labour at all (i don't anyway tbh)

i only really did 400 miles for the sake of doing them, in all honesty i'd have ragged it after 200 if i did it again i think...but i did regularly check nuts,bolts and for leaks

 

It is a bit of a grey area, running engines in. I am always quite surprised how much difference there is in the advice given on this subject. Particularly from the mechanics!

More research required!

JJ

 

you can research until the cows come home JJ, but you'll get the same conclusion - 2 schools of thought

personally, i believe in using boost and load to spread the piston rings out against the bore. mineral oil for 500 miles with limited revs but plenty of on/off throttle action. then change to good oil with filter change and away you go

 

Seconded.

 

Glad to here its back together JJ

Mp opinion on the running in:
Different honing finishes will of course benefit from different running in procedures, if its a rougher finnish then you need to be more gentle with it, but if its a fairly smooth hone then you need to give it some load in order to produce enough friction to run in properly.


Personally I go pretty gentley with engines to run them in generally though, although I do agree the vital thing is to vary the load, I think everyone agrees on that bet and its just how far to go with the max load it sees which people disagree on.
I wouldnt go over 4K for the first couple of hundred miles personally, then I would gradually increase it, and I wouldnt go more than about 10 psi.

But thats based on whats been found to work based on the guy that hones my bores and the finnish he gives, some people thoguh have a different grade of finnish and im sure a different approach will work better

 

So clearly the magnatec in the engine at the mo is not mineral!

As such, should I be dumping this oil, and getting some mineral oil in instead?

IF so, which oil?

JJ

 

up, - any ideas on the oil?

JJ

 

something like this:

http://cgi.ebay.co.uk/Silkolene-Ashf...QQcmdZViewItem

and its opie-oils so you'll get good service

 

No worries - given the relative urgency, I will buy locally, and drop the oil tonight!

Seems like such a waste of oil though - even so - cheaper than an engine rebuild!

JJ

 

this may be more suitable as its 15-50

http://cgi.ebay.co.uk/Silkolene-Supe...QQcmdZViewItem

 

i used duckams jj

 

Cheers matey . so basically - needs to be low grade mineral oil.


JJ

 

Or Duckhams!

 

or that one just as good

 

Sorry! -

Jay - What did you do with your brakes in the end?

JJ

 

I would definately stick with a mineral oil.

 

Anybody want to buy some nearly new Magnatec

 

Its now "glitter-tec"

 

PS

Serious point here, if magnatec actually is magnetic, it will hold all the swarf to the bores even when you drain it out, nice huh?
So you better hope all that "stays distributed around your engine for days due to its magentic properties" is all just marketting bollocks mate

 

stick some diesel in it

 

Care to place a bet on how magnetic it is.....



JJ

 

Well done JJ

Will catch up with you again sometime

Steve.

 

Cheers mate! Be good to see you

JJ