richard_xr2i1800

Hello as above my cossie uses a bit too much oil, not loads but still too much. What could cause this

The engine and turbo were rebuilt last year and its only done about 9,000 miles since, it doesnt smoke that i can see, when i boot it i see sum smoke but its more fuel than oil. Sometimes it smokes a little when cold but not all the time. Its not leaking from anywhere.

Theres no play in the turbo but is it still possible that thats the cause or could it be the vavle guides, i dont think its the rings but im not sure

Any ideas people, i dont what to replace the turbo etc only to find its something else

Cheers
Rich

Twellsie

iTrader: (1)

how much oil are you using, mine users about a litre every 1000 miles, and i have no visable signs of leakage at all, i was lead to believe this is quite normal on a cossie

richard_xr2i1800

the owners manual say it can use up to a 1 litre per 620 miles and mine uses a bit more than that

Rich

pee vee

so does mine mate,
hence the pile of rebuild bits ive got sat waiting in the corner

I cant really say that mine smokes either (not oily smoke)
but it still chomps thru it..


out of interest, what oil are you using?

Twellsie

iTrader: (1)

i think it may just be the case that some are worse than others, i use castrol RS in mine

twitchyrear

mines using about 1ltr of mobil1 per 1000miles(ish) cars running 396bhp also had rebuild 8000-9000 miles ago

Stealth Bomber

Mine uses quite a bit of oil, will go from Max to Min after 250 miles of hard motorway driving. Not sure how much oil Max to Min is, not more than 1/2 litre I guess but can someone confirm??

rabmc

Mines uses a a bit as well , but most of its all ver the ground in my street damn leak

richard_xr2i1800

Cheers everyone . if the valve guides are worn would it use oil

Cheers
Rich

pee vee

mine uses a Load of oil if i go on the motorway!
but not too much if i stick to normal roads where speed
is varied and im starting and stopping a lot!

so i guess its under vacume that mine uses oil!?

hence re-build, bottom end, head, everything!

twitchyrear

mine uses the same amount of oil on motorway or a and b roads

cossy2wd

mine used to drink oil bad till i took the head off and had it checked out.
the inlet valve guides were worn out so i had them done & exhaust done.
the bottom end had only done 3000 miles so that was left alone put it back together now i hardly uses any.
it did use to smoke bad when cold not a bit now touch wood.

richard_xr2i1800

Cheers, think i will do the valve guides and see how it is

Cheers
Rich

rssapphowner

mine smokes so i got a new head thinking it was valve guides but after taking head of found i got a melted piston new pistons for me please santa i am a good boylol

peter.g.c

prob will be your valve guides if it smokes when cold,mine usses about 1 litre every 1500miles

Stealth Bomber

I had new valves and guides when I lost my cambelt last year , anyway it still uses oil, doesn't smoke at all though, not at idle or on boost, weird. Oh and it's got a nearly new turbo.

pee vee

can i ask,

What exhausts are you guys using?
Size etc
DO they have middle boxes?


just reading something that says
If using a large bore pipe on a turbo car (particulaarly if middle box removed) then the almost complete lack of back pressure
can cause oil use

says that the turbo oil seal relies on some back pressure to keep the seal.

not sure how much truth there is in this, BUT the article appears in a well
known tuners catalog!

richard_xr2i1800

Funny you say that about the exhaust, i have a 3" scorpion with the middle box removed, maybe thats the problem that would be easier to fix.

Anyone else know anymore about this

Cheers
Rich

pee vee

mine also has middle box removed!

just a thought!

anyone else?