Took the engine out and apart today!

[ben_p]

All went smooth. Will upload pics later.

The bores look ok, few hairline vertical marks about 12mm long and not even on the scale how deep prop 0.000000002 mm deep about 2/3 per bore, is this normal? will the honing for the new pistons rid this?

Also the tops of the pistons were caked in black carbon deposits like 1-2mm thick and would crumble if you touched them, almost flakey..again normal? If not what is causing it?

pics tomorow

 

[ditz]

All went smooth. Will upload pics later.

The bores look ok, few hairline vertical marks about 12mm long and not even on the scale how deep prop 0.000000002 mm deep about 2/3 per bore, is this normal? will the honing for the new pistons rid this?

Also the tops of the pistons were caked in black carbon deposits like 1-2mm thick and would crumble if you touched them, almost flakey..again normal? If not what is causing it?

pics tomorow

was it mapped properly sounds overly rich thats not normal?
scored bores can also be caused by over fuelling.

 

[ben_p]

oh hope they come out with honing!

 

[sideways danny]

very faint vertical marks are totally normal and unavoidable. a hone will get rid of it, but you'll probably see some light marks again when you put new pistons in.

Are you sure the carbon is as thick as that? some is normal

edit - we know it's not over fueling as we checked it

 

[ben_p]

yea, at first i thought the pistons had worn/melted/corroded away lol.. but i scrapped it with a flat head and all the carbon started breaking off, strange! its only done 16 k lol

 

[sideways danny]

you'll never see an engine that has no carbon on the piston crown unless it's been running lean or hot (in which case it burns the carbon off)

 

[ben_p]

will get pics up today

 

[Ali]

That car WAS overfuling! lol Was it rebuilt top end after getting bodies...??

 

[Riley!]

as said, deposit could only really be caused by over fueling,

 

[ben_p]

not after the boddies, I think the head was rebuilt when the piston cracked.

Its having a full head re build too

 

[Riley!]

are you having another remap after new pistons are in?

 

[Fred@BTM]

^i would 3000000% guarantee that he will be

 

[jack_davey]

Pistons are nearly always black on the face when you take them out its usually a light oil/carbon deposit.

 

[ben_p]

Some pics

Rad, hoses, airbox and parts of loom off

Coming out

Gone! The bay is a state so needs a good paint/clean

Cams

Head off!

You cant really see the carbon here, I had took most of it off. Mate has some better pics which i'll get up, you can see a bif of the crud where i had been removing bits sat in the valve cuts

Dads new wheelbarrow / oil pan flol.

Jenveys and other shiz

 

[BenR]

clean running engine lol.

 

[Ali]

Thats the cause of the bonfire sized flames that MELTED my bumper.

 

[ben_p]

Also I changed the oil 280 miles ago, when I dropped it out yesterday it was black as fook again...does oil change colour that quickley?

 

[geesus69]

yes (so i have been told)

 

[BenR]

Also I changed the oil 280 miles ago, when I dropped it out yesterday it was black as fook again...does oil change colour that quickley?

If its already black inside, then yes.

 

[ben_p]

Oh, can I clean it with bleach?

 

[Ali]

GUNK.

 

[jack_davey]

when I had my engine rebuilt in my corsa, the guy that did it put it in a chemical washer unit, got rid of all the black really well. But it will always return as the rings never make a perfectly tight seal with the bores, so you will get a tiny amount of combustion charge run down the bores every once in a while that makes the oil black.

 

[ben_p]

Was joking about the bleech btw lol

Yeah the block is getting all cleaned up!