Turbo Update

[Coops]

Released Turbo from the manifold and had a poke around, so far:

1. Theres is definate lateral play of a couple of mm in turbine shaft
2. the inside of the exhaust manifold is clean as a whistle, scraped my finger down it and came out clean, no deposits of anything
3. inside of the exhaust housing of the turbo, manifold side, is dirty as hell, same swipe of the finger and came out black and sooty

the car is overfuelling a little

any ideas people?

cheers

Coops

[Lunner]

turbo???

have i missed something in my absence

[Coops]

yep :lol:

[MAXIBOY]

everything 8)

[Lunner]

story of my life :roll:

[Coops]

here u go man, blown it up twice already! :lol:

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/P6180031.jpg

http://i14.photobucket.com/albums/a330/coopahstar/Turbo/Frenchcarshow_289.jpg

anyway, ne1 any ideas? get the turbo rest of the way off and bite the bullet n pay to have ti checked over?

[MAXIBOY]

i would mate. piece of mind. and your compression and clean manifold suggest a good engine.

[Clio_GTT]

Dude you want to be looking at the inlet side of the turbo, take the boost hoses off and look for sticky oily mess.

what you describe in the exhaust side is just burnt soot, should be ok

i know a guy over on RTOC who rebuilds turbos if you want his details

[Coops]

inlet side is fine mate,but only checked inlet side, not boost side top chargecooler

if u could provide details mate that would be excellent cheers! 8)

[Clio_GTT]

inlet side is fine mate,but only checked inlet side, not boost side top chargecooler

if u could provide details mate that would be excellent cheers! 8)

you need to check the boost side lol, that's where the oil goes and then gets burnt and causes smoke.

[rossdj1983]

its normal to have slight amouts of oil in the charge system, but if its swimming you got trouble mate

[Coops]

oh no, the chargecooler side is fine, i checked the inlet to chargecooler pipework, totally clean, or cud it all of vapourised by then into the airstream?

its just i havent checked the turbo to chargecooler side

[Clio_GTT]

oh no, the chargecooler side is fine, i checked the inlet to chargecooler pipework, totally clean, or cud it all of vapourised by then into the airstream?

its just i havent checked the turbo to chargecooler side

check it just to be safe

how much play do you have in the shaft ? any in and out play ?

[Coops]

ai, in out play is what i mean, side to side its fine, in out theres a fair bit

[rossdj1983]

thats not to good mate, side to side is normal up to 1.5 mm

[Clio_GTT]

ai, in out play is what i mean, side to side its fine, in out theres a fair bit

:cry: it smoke much ?

could try taking the oil feed off the turbo and putting it straight into the oil return and taking the actuator off and opening the wastegate then running the engine to see if it smokes

[MAXIBOY]

8) good idea. i wasn,t sure you could remove the oil feed. but opening the wastegate as well is a good idea.

[Coops]

okay full story is after i rebuilt the b/e with new pistons the car smoked like a ****er on idle. i was shittin it that it was and engine issue, as in i messed up the rebuild, if its the turbo i'll do a back flip i'll be that happy tbh!genuinely i do hope it is the turbo as logistically thats a piece of piss to fix!

so yes it does smoke. only on idle when warm and its oily blueish smoke

i was just gonna run it like it is now, turbo all still connected but no attached to mani, so all gases will come straight out of head into atmosphere missing everything n check for smoke, but i'd rather not as i'll need to let it warm up and even then the situation in which is smokes isnt just when warm i dont think, seems to be after driven (so on boost for a bit) so its wont be definate diagnosis.

[Clio_GTT]

8) good idea. i wasn,t sure you could remove the oil feed. but opening the wastegate as well is a good idea.

the oil feed should just unscrew at the top of the turbo. common technique the R5 boys use to see if its the turbo or rings

[Clio_GTT]

you running a thinner oil ? bed the rings in right ?

[Coops]

ai mines off atm, but as said my whole turbo is off the mani, but still connected to drain and dowpipe. also the gasket is fubared so need a new un!

[MAXIBOY]

8) good idea. i wasn,t sure you could remove the oil feed. but opening the wastegate as well is a good idea.

the oil feed should just unscrew at the top of the turbo. common technique the R5 boys use to see if its the turbo or rings

yes i did mine the other day. meant wasn,t sure you could remove oil feed and run the turbo without even for checking it.

[Clio_GTT]

8) good idea. i wasn,t sure you could remove the oil feed. but opening the wastegate as well is a good idea.

the oil feed should just unscrew at the top of the turbo. common technique the R5 boys use to see if its the turbo or rings

yes i did mine the other day. meant wasn,t sure you could remove oil feed and run the turbo without even for checking it.

if the wastegate is kept open the turbo won't spool, i wouldn't let a turbo spool without oil

[Clio_GTT]

just run the engine without a turbo then lol and see if it smokes

[Clio_GTT]

just run the engine without a turbo then lol and see if it smokes

oh and take the boost hoses off the throttle

[MAXIBOY]

will the oil still leak without the suck though

[Coops]

think i mite, will have to wait till all my neighbours decide to go out, all at once :oops:

[Clio_GTT]

think i mite, will have to wait till all my neighbours decide to go out, all at once :oops:

haha, aii will be loud, make sure the oil feed is connected to the oil return or you'll have oil squirting everywhere, block or join the water hoses from the turbo and take the boost hoses off the throttle just incase there is oil in the chargecooler etc

[Coops]

when u say connect oil feed to drain, u mean proper seal it? as the bores are massively different, or can i just rest it into it?

[Clio_GTT]

when u say connect oil feed to drain, u mean proper seal it? as the bores are massively different, or can i just rest it into it?

put the metal end of the oil feed into the return and jubilee clip it up as tight as you can, oil will be at engine pressure = 3-6 bar :?

[Coops]

yeah figured as much! am thinkin i may just remove the turbo neway, i know for a fact it cud do with a 360 bearing in it, its only runnin poxy 270 or whatever atm and am plannin to boost up to its upper limit after clutch swap n proper remap

[Clio_GTT]

yeah figured as much! am thinkin i may just remove the turbo neway, i know for a fact it cud do with a 360 bearing in it, its only runnin poxy 270 or whatever atm and am plannin to boost up to its upper limit after clutch swap n proper remap

270 degree bearings are quite good, more robust as they let more oil in due to their cutout (hense 270 degrees) 360 bearing turbos let go easier when starved of oil.

[Coops]

but if am gonna boost to the turbo's limits, wudnt a stronger bearing be a better idea?

[Clio_GTT]

but if am gonna boost to the turbo's limits, wudnt a stronger bearing be a better idea?

what do you mean by stronger ? the bearings are strong, stronger than the casings. The GT series with the rollerbearings are quite good but also pricey. Depends how deep your pockets are.

[MAXIBOY]

roller bearings where its at. gt28rs

[Coops]

i thought the fact that the bearing surface surrounded the shaft on all sides meant the bearing was less likely to die when running higher boost levels, it figures to me that it wud support the shaft better than a 270, but is it a trade off with oil starvation issues?

am still learning about turbos n tryin to pic up stuff as i go along, i just heard that for a more durable turbo in a highish bost application best bet is a 360 degree bearing? or is a ball bearing better, or roller bearing? or shud i just wait till they perfect foil bearings! :lol:

[Clio_GTT]

roller bearings where its at. gt28rs

don't the RS's have different flanges and stuff tho ?

Try ATP turbos in america ;) 2$ for £1

[Clio_GTT]

http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-004&Category_Code=GRT

£588

[MAXIBOY]

http://www.owendevelopments.co.uk/turbos/garrett-turbos.asp

second one down is mine

[Coops]

now ya talkin, sounds shiny! :twisted:

[Clio_GTT]

now ya talkin, sounds shiny! :twisted:


ahhh the old disco potato, pulsars and 200sx's love these, get on the jap forums ;)

[MAXIBOY]

good for over 300bhp