Thanks Wiz...Originally Posted by The Wizard
I already tried it without the oil separator pot and it still smoked. Breather system is triple-checked and fine. Smoke is blue and smells very oily. I'm positive I put the rings on correctly, as an expert showed me how to do it on one piston so I could do the other three myself. I took the head to a shop to have the stem seals replaced and to have it checked in general and they found no problems...
So you think it's not turbo-related then?
New poster! (less than 10 posts)
did you make sure the letter/numbers written into each ring were facing upwards?
did you change anything else, like crank bearings?
did you change the liners and pistons outside or in a dusty workshop?
how many days was the engine 'open to the elements'? or was it completed in 1 day?
im covering all bases.
New poster! (less than 10 posts)
what oil pressure are you running?
does your turbo oil feed have a restrictor in it?
could be just oil still in the zorst.
once you have done all of the above to see if its engine or turbo.
here is how you get the oil out of the zorst
there are two ways
1: remove the exhaust and stand it up on end so all the oil drains out ( this dont get all the oil out but does help)
2: this is the method i prefure : hold the revs up at around 2,000 to 3,000 not driving and keeping a real close eye on the engine temp
driving cools the zorst
get the zorst as hot as you can and burn the oil out
Yes I'm positive the numbers on the rings faced upwards, I took special care in that. I also changed the conrod bearing shells, not the crank bearings. I changed everything in my own garage... took a couple of days, but I cleaned everything thoroughly before fitting the new stuff. Oil pressure whilst driving is around 4 bar, when idling & warm engine down to between 1 and 2 bar. I'm not sure what you mean by an oil restrictor. This is the oil feed that I use:
http://www.k-tecracing.com/show_product.asp?id=40
Here's a pic of the turbo oil leak... I'm not sure what this means. But you can easily see the leak at the bottom of the turbo... it's burned black due to the extreme temperatures...
Please guys... any comments on this picture?
Turbo oil seal kaputt by looks of it if oil is leaking out of there, or oil return to sump blocked/kinked badly backfilling the turbo.
The tomcat turbo's always leak out of the bottom of the exhaust housing when they fail like in your pic.
Hmmm... well the oil return is fine really... I've checked and double checked that... but the turbo is brand new... how can it have bad oil seals then??
Might just be a crap built turbo.
probably... god damn turbo supplier always tries to put the blame on my car... this is wrong, that is wrong... damn you NOTHING IS WRONG WITH MY CAR!!
shall i tell you a little story?
once upon a time a cheeky young chap, jantheeven was his name, decided to do an engine rebuild on his renault 5 gt turbo. he changed the big end bearings and fitted a new turbo. the engine as it started to wear in produced a bit of swarf, which dutifully went round the turbo, causing it to smoke. then end.
ERR, question....
what happens if I did not notice the way i put the rings in only in one bore ?
will it be a biggie ??
dont know if i can be bothered to strip the head and sump off to check.
Will a comp test tell the tail ?
Well apparently the way you put in the rings matters a lot... don't know if a comp test will reveal a problem there... I'm no expert on that subject.
Anyway... I took my turbo to 2 different turbo suppliers today and had it checked. It appears that the oil leak is easily fixable. My custom turbo has a removable oil return pipe, which is welded to a flange and has to be bolted on to the turbo with 2 bolts. And it's sealed with a gasket... which my turbo didn't have!! They gave me a gasket and sent me on my way, assuring me that the turbo itself was fine and that it didn't have a dodgy oil seal... otherwise there should be a presence of oil in the exhaust part... and that's clean. Happy times!
So now I just have to burn off all that oil in the exhaust...
Finally... light at the end of the tunnel
Last edited by jantheeven; 26-09-2008 at 13:06.
I'm cheeky? Hmmm...
By the way... thanks for considering me at an age of 31 to be a young chap
when i was 2, you were being kept warm by your dads Y fronts. you are a young chap to me...just!
any news on wever youve solved ya problems yet then m8?
Well... actually I had 3 problems: the blue smoke, the oil leak at the turbo and the high water temperature whilst slow driving and stand still. The oil leak is fixed and the turbo itself is fine fortunately. The high watertemp was caused by the fan switch connector which was on the wrong way around and the blue smoke is probably just old oil in the exhaust from before the rebuild... so that just needs to burn off
LOL okay popswhen i was 2, you were being kept warm by your dads Y fronts. you are a young chap to me...just!
Anyway... is it a good idea to drop the oil again now? I've driven about 50 miles... no freeway... not revving more than 3000rpm
yes change the oil.
i dont think you can actually change the oil too much when you are running it in.
oil filter too I presume?yes change the oil.
i dont think you can actually change the oil too much when you are running it in.
best to play it safe.
Thanks for all the help guys... I've modified the breather system and installed the original ph1 turbo oil return hose and it doesn't smoke any more!
So I'll be joining you next Sunday at the Nordschleife!!
New poster! (less than 10 posts)
Just curious, What did you mod on the breather system?
and what did the original PH1 oil return help with? I thought the phase 1 return was narrower that the PH2? assuming you mean you switched from ph2 return to ph1?
I added an oil catch tank just to be safe, due to my high boost pressure (22 psi).New poster! (less than 10 posts)
Just curious, What did you mod on the breather system?
and what did the original PH1 oil return help with? I thought the phase 1 return was narrower that the PH2? assuming you mean you switched from ph2 return to ph1?
I had a ph2 car & engine, but I swapped the engine for an overhauled ph1 engine, so my ph2 oil return didn't fit anymore. So I had to make an oil return myself out of old water hoses. And because the diameter of the turbo's oil return pipe was bigger than the pipe going to the sump, I had to fit a small diameter hose into a bigger hoseIt appeared that the inner diameter of the small hose was just too small, compared to the original ph1 oil return hose.
you want to watch those water hoses with oil, the oil will kill them.
Binned them
Now have the original Renault oil return hose
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