Exa Turbo Problem

[jacquie]

Hi! I bought a 1985 Nissan Pulsar EXA Turbo 2 weeks ago. The turbo has apparently been reconditioned. I have a small problem though. 3 days ago, I went out for a drive and went the turbo kicked in it started to squeal!! Not good! I took it to a friend of my dads who is a mechanic. He said it sound like a bearing or something. Another guy told us that it is probably out of alignment. (Whateva that means) So now i'm looking on the net trying to find places that sell second hand turbos. I haven't had any luck yet. But i was wondering what kind of turbo would be in the car, and whether there would be a newer second hand turbo that i could have put into it. If anyone can help.....PLEASE reply!

Thanks!!:hitwall:

[68IOU1]

if its starting to squeal when the turbo kicks in, check the hoses from the turbo to the throttle body for holes/loose clamps etc. one may have worn out/come loose.
the exa came standard with a Garrett T2 turbocharger

[boostinhard]

Hey,
yup - what billy said. Plus, check here for second hand turbo's.... :
n12 turbo classifieds (http://www.network54.com/Hide/Forum/193279)
Sam

[jacquie]

Will a T25 fit into my car ok without working the engine too hard?

[kekilepep]

It depends on how the car is
like

if its been thrashed then i wouldnt put a t25 on it as it may do more damage
atm my exa is blowing white smoke, usually when i come off boost but its been getting abit worst, doing it when i accel and change gears down when coming to a set of lights
or generally, if i rev it to 4k then let it go down, it'll backfire then some smoke will come out

I cant figure out if its my T2 Turbo thats dying or if its my Rings/Valve Stem Seals
My car has been babied tho, a 52yr old woman owned it b4 me so im guessing it hasnt been thrashed, if at all

If it is the turbo ill take a longshot and throw in a T25 or T28


Does your car blow any smoke ?

[X-Lr8]

volvo's came with a t25 in them i belive i used to have a volvo 740 turbo and that is whats in it you can find them all over junkyards..

[Nisman]

if the turbo is making a loud squeeling noise, it is almost 90% certain that the bearings in the turbo are worn, and the wheels exhaust/compressor wheels are moving and rubbing on the housing.
if it is a hiss you may have a leek, but not a high pitched squeel.
so the mechanic and the other guy are right, the thrust bearing is buggered and cause the shaft to move and put it out of alignment so that the wheel rubs on the housing. Its a pretty common problem of worn turbo chargers.
An easy way to check this is to take the pipe that goes to the inlet of the turbo off, grab the shaft and move it, it should have little movement from left to right (a little, but hardly any) and should not move in and out at all.
you will probably find that if the bearings are gone, the seals will be too, this will cause the turbo to blow oil through your inlet and into your motor.


It depends on how the car is
like if its been thrashed then i wouldnt put a t25 on it as it may do more damage

there is no way changing the turbo will do more damage. If you put a massive turbo on then maybe as you will have to rev the shit out of the motor to get it on boost, but a t25 would be fine, probably even better for the motor.

[Akela]

Yeah, i'd recomend getting a T25 or somethang. Standart ET T2 turbos make no power. U need a custom manifold though. They go 4 about 250. BTW stick wit nissan turbos, they generally betta and fulii sik.

[JeffET]

yeh fulli sick mate, fark off

You dont need a custom manifold to bolt on a T25, it will bolt to the std ET manifold as they share the same small frame flange. just need to rotate the housings to suit your current setup, and perhaps a new dump pipe (3 out of 5 bolts line up). Also depending on the type of t25, you may need new compressor outlet made up....oil return as well.

Go a t28 if you plan on big power, but it doesnt sound like you are at this stage!!

[Nisman]

the oil return wasnt a major problem for me, just cut the t25 return off about 2 inches down, then put a formed 60 degree bend off a bit of heater hose on there to the sump, it clears the wastegate perfect and the hose doesnt squash down or kink at all.
jeff is right, you will not need a custom manafold. I would recomend a custom exhaust dump, around $200 for a good mandrel bent one, alot less bodgy.
It amazes me how often people have the entire wrong info, and to do a simple thing it must cost em a heap of money taking the long way. But i guess it is better cause it is the fully sik way!
:trippa:

[Akela]

Hell yeah, T25 on a custom manifold is fulli sik, specially if the T25 has T3 internals and 20psi through it and the car runs 12.56.

k my bad, u can bang it on the standard manifold but it flows like an exhaust of a charade. To tell u the truth i don't have much experience wit ET's, the main exposure i get of theses cars is from Chris's ET(fulii), u now the second fastest ET in Aus. See we don't do things bodgy so i've never actually hear of anyone in our ET group using standard manifolds.

As for wasting money, maybe u do when u pay someone else to make your manifold but when we actually make it ourselve, so manifold cost us almost nothing.

[Nisman]

you may be right in the fact that a custom manafold will flow better, but when you consider that jacquie is only looking for a minor turbo upgrade, the manafold is not really an issue.

regardless of whether you make the manafold yourself it is still not cheap. You still need to pay for steam pipe, the cost of mandrel bending it, and to take the time to weld it.
So it does cost you money.

I have been involved in building a few quick cars now (mainly my mates celica which ran a high 10 at calder park)
and i have to say that regardless of the fact that he and i did all the work on the car, it still owed him an absolute mint. And often it was cheaper to buy the part from a specialist than to do it ourself for the main reason that they usually make them in a larger amount so their costs are much lower and they are tested and race proven.

an example of the long way around, i watched a friend of a friend put a vl turbo motor in a vk commadore. I tried telling him about the fact that he could quite easily put the vl cross member into the car and the motor would bolt straight in. Being an arrogant smart ass he knew everything and believed i was wrong :hitwall:
after spending thousands of dollars having custom engine mounts made, little bits and pieces custom made and trouble bolting the vk box to the vl motor he gave up on the project.
Rather than just go and buy a cross member for probably around $50 he took the long way, and it cost him a mint, all because he was miss informed and too arogant to listen to someone.

[Akela]

Hell nah man, custom manifold will set u bac abount 3-4 hundred bucks from a workshop, we made one and we sold it for about 150 i think, which means it cost us less doesn't it? We don't pay for mandrel bending, i think ben does something else to get around it while maintaing fulliiness!!!

[barnabylim]

Hi, I'm looking for a custom manifold for a T25. Would I be able to buy one off you guys?

[Nisman]

i dont know how he does it with out mandrel bends....

http://www.n12turbo.com/cars/chris_et/n12_DSC03067.jpg


i have to say that this is the best press bending i have ever seen!

if you can make these and sell them for $150 put me on the list for one!

[Akela]

I'll word him up. See what he does. I know u'll think i'm BS'ing u, but at 150 dollars he doesn't make em 4 everyone just friends as u can see its really not worth his time. But i pretty sure he sold the manifold 4 150. I'll find out exactly in an hour or so and tell u exactly. :cheers:

[Akela]

It ended up costing about 200, he purshased the necessary bends a seperate pieces of pipe then cut weld and grind back. He doesn't make too muc profit, infact none i think so he only makes it only for friends

[joe]

dude, the exact thing happened to me! and it got louder and louder, it turned out that i blew the flange gaskets on the turbo and then the turbo wriggled itself loose, cost about $150 for gaskets to be refiited and turbo bolted back up,

Doe the T2 have bearings? i dont think so

[Nisman]

all turbo's have bearings, but there a few different styles of bearings.
a t2 has the normal bush type bearing not roller bearing (i think that is what you are getting at)


akela, sorry dude, im not usually one to argue, i dunno what got to me this time. but i guess you see what i was getting at ;)

[Akela]

Yeah bro dats cool man. U were never rude or out of line, i can see where u r coming from. I never really felt like we were arguing, just discussing it.
Mind u he actually works for an exhaust shop so he gets bits and pieces of extra pipe cheap so in a way you're right. Without certain luk or connections even if you know how to weld, its still expensive.

[KAMELEON]

u certainly live off this car
the owner drives it at the track but the mechanic has the car at his workshop 24/7
would be nice to see more owner builders not just workshop heroes
nisman sammy(boostinhard) and ure car are stand out n12 exas both with different ideas but alot of owner input which is what i love to see
keep up the good work;)

[Akela]

I actually don own the n12. My good friend does, and my other friend who helps me with my car, built chris's n12. I drove a ca18det n13. Hopefuul one day with 300hp at the wheels. Aiming 4 above 200hp with standard turbo in 3-4weeks. After i finish uni and got time to put evcerythin back together

[JeffET]

Yeh just stop going on about how things are fullii sicckk without giving a reason. Nissan turbos are good because they are plentiful, and the T28 comes off an engine with a similar hp rating to the hp you are chasing.

I have a t25 on my car but it aint gonna run a 12.5, its a mixture of other things, not just the turbo that makes the car fast.

That said, a manifold will make the most of any turbo, and if you pick up a tuned length one for a few hundred, thats great!!:D

I never take my car to a shop unless its something I dont have the skills to do myself....you learn and save money at the same time!!!

[Nisman]

The only two things i have ever paid someone to do on my car was a pink slip and a dyno tune.

Kameleon, glad to see someone with the same appreciation for car modifying as me...
most people i know these days are not willing to get their hands dirty, in my book it defeats the purpouse of modifying a car.

[joe]

Originally posted by KAMELEON
u certainly live off this car
the owner drives it at the track but the mechanic has the car at his workshop 24/7
would be nice to see more owner builders not just workshop heroes.


What do you mean by workshop heroes? What so heroic about getting a mechanic to work on your car?

Id much rather pay to have a highly Trained and experienced mechanic to work on my car than dodge it up myself.

[Akela]

regarding the fullii coments i make. Just 4 those of u who are not aware, the numba plate of my friend et is fullii. Its a thing we do. Basically a easy way of sack better than the rest, without going into detail. So quit trippin on me!

[Hairball]

this is kameleon on craigs sign in again
not paying out anyone i just enjoy learning while experiencing things with cars
im a mechanic so it comes naturally pretty much but for otehr ppl u learn as u go\not saying dont gte ppl to do the work but to actually be interested in wat that person does to get the results and or do some of it ureself
like sam learnt his ecu programs and adjusts them on the run knows his a/f ratios on czy pretty much spot on now
chris2 anotehr n12 dude who loves to tweak etc
just go out have a go and be interested in modifying for a purpose not just to tell ya mates ure cars got this and that
just have a go!