BOV spitting oil

[Paz]

is this just because of engine wear??

thats all mechanics seem to say about it and it cant be fixed.... i just bought the bov and i dont wanna really ditch it already...... im not losing oil cos its just oil that would have been burnt and gone out the exhaust anyway....but it blows all over the damn plugs and they slip off sometimes cos of it....

also am i losing power because of this??
also my turbo is leaking, does this mean that its not working to its full potential?? cos my turbo seems to top out earlier than before.....

if someone like nisman or 85 exa can answer these newbie questions it would be much appreciated...thanx guys...

[85EXABOY]

i owuld say its blow by past the rings.. it might be time for a rebuild

if you want a short term fix then clean up all yoru hoses and get a oil air seperator..
if its not the oil through the breather hoses then it will be your turbo sptting the oil which is a little bit better than the engine's rings

[Nisman]

if you bov is spitting oil its not caused by the engine.
rather, the oil is comming from the turbocharger. it is blown up into the motor, and when the bov blows off, it vents some of this oil, hence the oil comming from it.
in other words, the turbo seals are worn out, and are causeing oil to be blown into your motor.

if you have the stock t2, get it recod, or upgrade, i bet this will solve your problem, i had the same hassle, so i know first hand.

[Akela]

Nisman is right. Ur turbo is stuffed. leeting oil throught. time for a big turbo!!!

[Paz]

yeh, i suspected, my turbo leaks like a bitch, time for new one..... im thinking t25 but then i gotta change exhaust right? and put an intercooler on.... or can i just put on a t25 with the right size internals?

DOES ANYONE HAVE A T2 HIGHFLOWED FOR SALE?

[Paul Smith]

I guess I do but even though it has no shaft play the seals are shot and it smokes. It needs a kit through it. Wouldn't know what it's worth anyway.

[Paz]

here's a stupid question for you all, what is shaft play?

and also, how much to recondition a turbo and is it worth it as opposed to buying a different one...

[Paul Smith]

If the shaft that the turbine wheels are mounted on has lots of play the turbo is worn out. My high flow T2 has been recently reconditioned but for some reason the oil seals didn't last. If the turbo has a lot of shaft play but the shaft isn't damaged in any way then the cost to repair isn't any higher than just needing seals, as bearings and seals are fitted when they use a new kit.

[Nisman]

basically this is how shaft play works.
ok on a turbo there are two sides, exhaust and compressor. The turbines of each side are supported by a common shaft, which runs through the centre core. The core supports the shaft with either bush type or ball bearings (t2 and t25 are bush type)
all shafts should have some movement as there has to be a small amount of clearance between the bearings and the shaft, however as the bearings wear, the shaft will move more, and this is refered to as play.
when checking for shaft play there should be a small amount of play up and down, but there should be no movement if you push the shaft in and out.

to be honest i wouldnt bother with the t2 reco or highflow, a highflow will cost you more than a recod t25.
you dont have to change the exhaust, but for 200 bucks it is well worth it, also if your stock t2 is not water cooled, you will have to fit the water lines to convert to a t25

[Paz]

thanx for the help guys.....much appreciated...

NOW, here's my new set of questions..

- yes i basically understand about the fuctions of a turbo but how can you tell if it has play or not, i cant even see into anything to move on my turbo because there are pipes going into every oraface. Im guessing th obvious answer is gonna be that i should take off the pipes and have a look.....

- if i went to a bloke and said 'i'll take that reconditioned t25 off your hands thanx, then what am i gonna need as well as this new turbo.

my car is completely stock exept for a bov. no timer, no boost guage, no boost controller and NO WATER COOLER.....

WHAT DO I NEED GUYS? thats essential so that I dont incure anymore problems or new problems....thanx..

[Lonx]

and have u guy's reco'd a turbo before? i've reco'd almost everything but... i'm asking cause i'd like to help paz out, so if its just a seal job i am definately interested in helping u mate, otherwise if machining needs to be done then i definately can't due to lack of tools/knowledge.

[Paz]

i'll be in sydney as of saturday..... will have my head under the bonnet as soon as i find a rag..... i find it relaxing taking stuff off and cleaning it out and putting it back on..... satifying when the car actually goes better after i have messed with it, as opposed to it not starting......lol

and thanx Brenden, help would be much appreciated man.... i met this guy here who owns a ET turbo, he was a nice bloke and told me to go to him for free parts..... he sayed he has a t2 turbo, that has a little shaft play, hed probably give it to me for nuthin so i grab it incase its better than mine.... he spent 5000 bucks on stroking and makin his et block kick arse... i think he sayed its at 1.7 ltres!....

[boostinhard]

Hey,
cool. Yeah it would be a 1.7 litre stroker kit. E16 crank with 80thou oversize pistons... Havent heard any decent power figures out of one of these stroker engines as of yet. Dont get me wrong, not saying they arent good, just havent heard of anyone really taking advantage of what they should have to offer. Nice of him to give you the T2!!!
Sam

[BROADZ]

hehe, my bov was spitting oil.

you, my friend are lucky.......my whole car blows constant WHITE SMOKE.

i think it is time for a rebuild on the t2....

[Nisman]

ok, i have discussed this before.
there is no point having a go at recoing a turbo yourself. not to say it cant be done, but its alot of hassle.
due to the high speeds a turbo spins at, it is essential that the shaft and turbines be in perfect balance, you could spend a whole day putting new seals in, but if its not balanced correctly it will take even less than that to flog them out.
if you do want to, it is essential that you mark every single part and line them up 100% as they came off, but even this is no garauntee.

Paz, to check out your shaft play, you will need to pull the inlet pipe off, this is the pipe that comes from the air filter to the turbo.
its on the passangers side end of the turbo.
if you look into this hole you will see the turbine and the centre where it bolts to the shaft.
grab it, give it a jiggle. it should have little to no movement.

if you pick the t25 route, which is the only option in my opinion, you will need to fit water lines.
This is piss easy, and if i was still in sydo i would be more than happy to help, but i aint.... maybe someone else can help here.
ok, to run the water feed to the turbo, the water has to be picked up from the thermostat housing.
in this housing there is a temp sensor, then next to the sensor there is another pluged up hole. Unplug it, and insert a barb fitting that can be obtained from any plumbing store.
there you have your water feed, that simple.
and the water drain is just as easy.
on the passangers side end tank of the radiator you have a drain plug.
this is where the water feed back goes....
you will have to buy a banjo fitting that will fit into the thread of this hole, i would recomend taking the plug out and to a shop that sells the fittings and they can find u something suitable.
screw the banjo fitting in (and dont forget the brass washers each side or it will leak) and there you have the spot for the water to drain back too.
all lines are about 1/2 inch i think.

the only other issue is the dump pipe, the stock one will bolt up well enough to do the job, but it doesnt fit correctly. So it is up to you weather u want to spend the 200 bucks to get a custom 3 incher made.

boostinhard...there used to be a guy with the e17 stroker kit in his et on the e15et forums, he had the same mods as me but a bigger turbo, and i had a stock engine, he made LESS power than me on 2psi higher boost, however he did punch out a few NM more torque.

sorry for the long post guys, but hope this helps paz ;)

[boostinhard]

Hey,
nisman - yeah, thats exactly what I mean. Maybe the head doesnt flow enough air for the 1.7? Thats about the best answer I can come up with.... Might need two camshafts and bigger ports to accomodate the extra 200cc??? Or maybe the cylinder walls get too thin warp and you get a large blow-by causing dramatic power loss? I'd like to play with one of those 1.7's though, would be interesting...
Sam

[Paz]

thanx guys it is much appreciated for your help..... i will get some help of my new found n12 friend curly with the water cooler.... he seems to know plenty of stuff bout these lil enginez....

ok here is another stupid question but the answer is only short..

what is that rubber pipe (about 1 inch thick) that goes from the top of the engine to the corner rubber on the passenger side of the turbo do?.....

cos mines not held on by anything, it just sits in there loose in the hole but it never comes off..... it only came off cos i moved it...

should this pipe be clamped on at the turbo end, or not....

does that make sense?

[Paul Smith]

It's fine the way it is. It's a breather that sucks any fumes into the system to be burned.

[Nisman]

alot of people just take it off completely (i did)
as paul said, it just recycles engine gases from the crank case back through the motor, and in most cases acts as a pressure equaliser to counteract the vacuum effect of the pcv line.

the reason some people remove it and replace it with a small filter on the rocker cover is that they commonly allow oil and oil vapour into the inlet and cause smoking, another alternative is to connect it to a catch can or oil/air seperator.

[Clueless]

Hi, i have a 200sx with a leaky turbo what the hell should i do and how much will it cost? I've been qouted £1700 for a rebuild of it from a nissan dealership. I want to just keep the original turbo as it is really as im not that interested in modding anything else on the car. What should i do?

[REBBS]

just be thank ful that the car is runnin from a to b unlike most exas lol

[exagrandprix104]

^^^^ the above 2 posters should BOTH be named clueless, lmao!

This thread has been dead for longer than ive been a member

[Clueless]

Thats not a lot of help guys. I need info not jokes.

[Clueless]

The name is a refelction of my knowledge on the subject

[exagrandprix104]

1700 for a rebuild is a little on the dodgy side...

you should be able to pick up a second hand T25 for 400 or so, or even a brand new T25G for under a grand.

I wouldnt pay 1700 for anything under a TD05 or something.

[Android 360]

talk to devilsexa, he would have a better idea of whats available in england in regards to nissan parts...

[Clueless]

I dont know what a T25, a T25G or a TD05 is. i just want the car to have the same turbo as was fitted standard. :help:

[BOOSTIN]

talk with an importer in your country. that would be your best bet i think. good luck.

[NX-TC]

ask ur importer for a T88 turbo, fits straight on!
good luck mate!