e46 328i engine overhauled need advice :(

[e46jase]

hi guys I overheated last year when my idler pulley went and overhauled the engine i decided to do top and bottom as there was a lot wrong with the car and i had hit 300k on the car. entire job has taking months only finished it now

just got my car back and it is pissing white smoke out of the exhaust and burning oil like crazy

Did do new rings and honing of sleeves
the diagnostics is picking up a misfire on cylinder 3 and cyl 1
on inspection of the new plugs cyl 3's plug is full of oil and cyl 1, the rest are fine no oil on plugs

car is pulling strong and feels like it has a lot of power especially considering the misfire (although i did vanos seals at same time and probably just didnt realize how much power i was lacking before the overhaul)

I have a new cvv and obviously did valve stem seals when doing the head so cant be smoking because of that, doesnt look likes its burning coolant 'but instead oil

clearly my problem here are the rings. my question is what is my best option now, i am not sure if the rings are just duds and perhaps just sealing bad due to poor quality or bad luck or if the sleeves are too big due to honing and i am now in need of over sized pistons or new sleeves of which either are going to be costly.

car was done by ex bm mechanic, he claims that awhile back he had a 4 cylinder that smoked after an overhaul for 2 weeks (first 1000km's) and thereafter enough carbon built up on sleeves to stop oil from getting through he reckons i took a shortcut by not doing sleeves and should give it 1000km to see if it seals

the whole 1000km story with carbon building up to me sounds like bull dust i do know carbon does build up and i do know the rings may need to seat still but i am now on minimum oil on the dipstick after only 200km and this sounds highly unlikely that that much carbon will build up and create the seal while the rings seat in. i am looking for some fanatic advice here :argh: cannot explain my frustration here :bangdesk:

 

[zaleonardz]

Well,

Perhaps driving it for 1,000km and doing an oil change is not a bad idea.

Its possible that it may settle, but in my opinion, it may not work.

Did you do any head work, valve stem seals ?

 

[e46jase]

Well,

Perhaps driving it for 1,000km and doing an oil change is not a bad idea.

Its possible that it may settle, but in my opinion, it may not work.

Did you do any head work, valve stem seals ?

it had new oil although now it is burning it so fast i have to top up big time
yup valve stem seals where done came with the head gasket kit used victor reinz

if it seals i will be so surprised but i would love it to do so just also feel like this is unlikely

 

[zaleonardz]

Compression test ?

The oil change after 1,000km is just to take out any fine particles and stuff after the honing of the block, generally a good idea.

What make rings did he use, do you know ?

 

[moranor@axis]

drive for 1000km and see where its at...

 

[e46jase]

Compression test ?

The oil change after 1,000km is just to take out any fine particles and stuff after the honing of the block, generally a good idea.

What make rings did he use, do you know ?

have not done compression test yet, i know we used the more expensive rings as i didnt want to go cheap there i will find out as i cannot remember the brand. I remember a brand "AE" but im not sure if those are the cheapos i didnt go for or if those where the better ones we opted for i will have to ask him again

 

[Gizmo]

You overheated your aluminium block? The bores are now oval, did the monkey bother to measure to bores before he rebuilt the engine?:nonono:

 

[e46jase]

You overheated your aluminium block? The bores are now oval, did the monkey bother to measure to bores before he rebuilt the engine?:nonono:

hi giz yes aluminium block

we did ask him to check bores to see whether i needed new sleeves or rebore and he confirmed that they were all fine and that we needed standard rings

however i have overheated twice in the cars life perhaps they were oval?

 

[Peter@AEW]

hi guys I overheated last year when my idler pulley went and overhauled the engine i decided to do top and bottom as there was a lot wrong with the car and i had hit 300k on the car. entire job has taking months only finished it now

just got my car back and it is pissing white smoke out of the exhaust and burning oil like crazy

Did do new rings and honing of sleeves

If aluminium block you cannot hone if overheated you are oval.

Block out measure bores for ovality if oval and cast iron re bore to whatever size it will clear if aluminium re sleeve.

New rings
New gasket set

Get someone who knows to help you.

 

[e46jase]

hi guys I overheated last year when my idler pulley went and overhauled the engine i decided to do top and bottom as there was a lot wrong with the car and i had hit 300k on the car. entire job has taking months only finished it now

just got my car back and it is pissing white smoke out of the exhaust and burning oil like crazy

Did do new rings and honing of sleeves

If aluminium block you cannot hone if overheated you are oval.

Block out measure bores for ovality if oval and cast iron re bore to whatever size it will clear if aluminium re sleeve.

New rings
New gasket set

Get someone who knows to help you.

sounds like that could definitely be my problem there, what prices should i be looking at to resleeve?

 

[zaleonardz]

M54 or M52 ?

 

[e46jase]

m52

 

[Peter@AEW]

M52 is aluminium block.

If it has been honed then it implies a backyard job as no self respecting Engineering Works would do that.

Get someone who knows what is happening to help you and get ready to spend some big money now to get it done professionally.

I am going by the info you have provided

 

[zaleonardz]

Alternatively,

I bought a prestine engine for the x3 at a well known engine import company, and it solved my issues, no mess no fuss, apart from the 28k of course

 

[racing snake]

i smell a load of BS!

that motor has been poorly built. i doubt the bores are oval as a result of the overheating as ive personally never seen this with my own eyes... it sounds like the bmw mechanic possibly broke/folded 1 of the oil control rings when he installed the piston.

the ally blocks are nicasil sleeve types and if he went nuts with the hone it is possible that he worked right through the coating, exposing the ally in the block itself, but that would take some serious effort... i doubt this as it should then show up on more of the cylinders as they generally tend to wear at more or less the same rate.

if you need a resleeve you are in for about R2500 for all 6 cylinders just for the engineering, that excludes the labour to remove, strip, clean, assemble and refit the motor.

i hope you get this sorted out but i would try stay far away from the guy who built your motor last...

 

[De@nO]

Drop in an M54B30:thumbs:

Sorry, don't really have any other advise here. Hope it comes right Jase!

 

[spawn616]

poor build


burning oil while burning water, suprised u havnt run bearings already,

none of my builds burn oil as much as ur describing ,maybe a top up after 6to10k km, i think u got shafted properly

maybe he a ex bmw mechanic for a reason,

sorry man

 

[e46jase]

shux seems i have gone down a bad road here with this engine. thanks for the advice guys much appreciated

going to sit down and work out the most cost effective way to sort out my problems

on the bright side maybe all of this will force me to get 330 as i have always wanted haha

 

[spawn616]

motor swap is probably most cost effective

 

[Technician]

im just throwing this out there.

you said you changed the seals in the vanos?

if the vanos isnt set at neutral when re-assembling it could be advancing or retarding the cam.

perhaps checking the vanos settings, the cam setting and a oil change after 1000km's might help???