avon a non starter for me
Turbo Mini Forums

got engine running this morning, i primed the pump and spun over until i got oil pressure

it started on the button and a little smoke out the back, engine sounded so so sweet with the clutch down and the straight cut gears disengaged held revs at 2k to bed in cam but smoke has got worse and worse

i ended up switching off and ringing tom who suggested reducing the oil pressure i have done this so it sits at a steady 60psi at 2k but the smoke is worse than ever


i feel totally deflated! have now missed my RR so even if i can fix it i cant get it set up

dd you bed in the cam at 2000 rpm with the clutch down all the time? if thats the case I would say hi to crankthrust problems.

no mate just put it down once to see if the rattle went

okay, thats good:)

a friend had a smokey turbo engine just after a full rebuild. he came round in it and it was sounding fine. we checked the timing and found it at 41deg so reduced it to 15deg and 95% of the smoke stopped. the rest is down to the need to run in the rings.

if the engine sounds fine and was rebuilt then i would first go for poor fueling (too rich gives white smoke) or timing, then turbo oil seal (blue smoke) and last the engine

the engine can only smoke if it burns poorly(timing or fueling) or if burning oil or water (turbo, head gasket, pistons/rings dodgy head)

if its the bottom end it will smoke out the breathers as well as exhaust.

i had a problem with mine smoking at first ,,,it turned out to be thje seals on the choke mechanism leaking and richening it up so it smoked .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

i think the next rwyb @ avon isnt till september 30th but there is one at santa pod on 13th august.

Bugger mate. I really feel for you.

I think the only option is to work through it methodically to find the culprit, maybe try a different turbo to rule that out?
I hate to say it but as much smoke as you described from a brand new engine, could it be you have accidentally broken a ring upon assembly?

Have you pulled the plugs out to see if it is one definate plug that is getting oiled up?

what colour smoke?

Alex

AlexF

smoke is mostly white

ive popped the plugs outs and there a little wet round the edges but the electrods are dark brown on all the plugs

How about your breathers , they ok?.....excessive oil in the rockers/valves/head area?

I know , i know im sorry , it just makes me grin !!!

Intercooled 1293 cc Turbo +
March 06,4psi and counting .
Its now gone up to 8psi.
Nov 06,10psi +.
And now part of the Airbourne club.

Heres a thought if it was a broken ring.If you pull one of the leads off the spark plugs at a time. if one cylinder is burning oil it should stop.Right!

I know , i know im sorry , it just makes me grin !!!

Intercooled 1293 cc Turbo +
March 06,4psi and counting .
Its now gone up to 8psi.
Nov 06,10psi +.
And now part of the Airbourne club.

first off, if the smoke is mainly white it sounds more like head gasket problems and not oil burning problems. All engines smoke initially untill they are run in and it usually takes a while for that to happen (a friends engine didnt stop smoking till after 1200miles).

Do you have a servo connected or possibly a lot of water in the exhaust?

I've seen the future and tbh its Pie

theres no servo and no water in the exhaust

i will whip the head off i think

does it smoke from the crank case breathers?

is it a water cooled turbo as these can fail putting water in the oil and give white smoke from the exhaust (also smoke from breathers).

if no smoke from breathers

normaly the head/gasket if its white smoke, but could still be fuel or ignition.

if it gets worse when worm then its water getting in either from head gasket or a dodgy ported head (or turbo as above)

If you suspect it is water related, then run the engine with the rad cap off so the coolant doesn't pressure up, and see if it still smokes.

if the turbo has gone will there be oil in the intercooler pipes?

mine smoked like a bitch today until we had the right advance in there. running on 2 cylinders/sometimes 4 and it just chucked smoke out. as soon as the advance was right it disapeared totally.

not the only one not taking a car to avon we'll have some beers instead mate

well looks like the headgasket blew on mine

would this be due to the initial high oil pressure?

when i removed the head two of the arp studs came out rather than just the nuts off is this normal? i torqued the head down to 40lb with arp lube

there is also no scoring of the bores i take it this shows the rings are ok?

Sounds like the rings are OK. High oil pressure shouldn't be enough to blow a headgasket, mine achieves 100psi when its cold at the moment, I need to lower the oil pressure. Bear in mind that the pressure in the cylinders is far far greater than oil pressure.

If I were you I'd be tempted to lob another gasket at it and try again.....

PS did you tighten the studs down using the female hex in the top of them before putting the nuts on?

yes mate they were nice and tight in the block

Sorry to hear that.
could it be you have accidentally broken a ring upon assembly?
I did
Have you pulled the plugs out to see if it is one definate plug that is getting oiled up?
It showed cyliner no 2 on mine.

isnt 40 lb ft a bit low for the head bolts ? i cant remember .check for any hairline cracks in the head ,specially from the brass plug to one of the middle chambers .regards good luck ,robert.

Edited by robert on 13th Jul, 2006.

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM