My 200SX S13 1991 needs some love, and my first post!

[skinnyguy]

Hi Guys,

Have been floating around the forum for a few months, thought it would be time to become an active member at least

So, the questions I have to ask are this, (PS I did search, might have missed info that would answer my questions, If I did I apologize):

Stock standard CA18DET.
Lately I could smell petrol all over the show, checked under the hood and I concluded either leaky injector/s or perished O-ring seals on them

Q1: do the injectors themselves develop leaks, or is it usually the O-rings sealing the top of fuel rail and bottom in intake runner that just needs replacing? a little pool of fuel is accumulating on my intake runners and I can just see myself next to the road, car In flames.

Plus lately a little cloud of black smoke makes it's appearance under foot to the floor under boost, not much but not nice, seems it's overfuelling, also regular backfiring, depending on driving style at the moment.

If I have to replace injectors, (I do know they are 370cc, low impedance?) and am looking to up the boost to +- 1bar, will the same injector suffice? or am I looking at 400cc or 444cc injectors?

Q2: My gearbox has developed a grinding noise, it's prolly one of the ugliest sounds that have ever fallen upon my ears, not whining, a grinding noise, except when in 4'th. it still drives fine it's just making a hectic geraas, yes there is oil in the box, and the specified amount. who's arm can I turn to sell me an S13 box? if they belong to the family of chicken teeth, what box will fit the stock bell housing?


and thats it for now I think, big apologies if these questions make you yawn, let me do some more searches and if I get all my Q's A'd then i'll delete this post promptly.

Louis.

[aep886]

^^ congrat 1st post~ stock injector at 1 bar no problem...

[poizen]

hey buddy welcome


Q1-A1 yes its normally just the top o-ring thats gone dnt worrie about the bottom one its just a seal for air

rather get yourself 550cc injectors will help you in the long run


Q2-A2 i have a perfect ca gearbox for you but i can only sell once i know my sr box is ok and runs fine (which im sure it does)

or you can get from engine importers here in durban they cost R2900

[skinnyguy]

two replies already! you guys are awesome!

aep886, thanx! and in that case I'll shop for something of the same size or a little bigger maybe? maybe not then, I dont plan on making massive power, If it's reliable (enough, and so far it's been despite thermovalve failing and previous clutch 'used up' so to speak) and it eats the average focus ST and scares the shit out of my girlfriend I will be happy lol.

poizen, I'm in gauteng but I'll pay for shipping transport no probs if/when you decide to let go of the box

So the verdict is, if I replace the top o-ring seals I will be golden, if the injectors are not blocked and spraying properly rather than dripping etc. But then 550cc gives me headroom for future upgrades... hmmm, i think i should bite the bullet.

I will be modding and tuning the stock ECU. If anyone has interest in modding their stock CA ecu's, I am halfway through an eeprom emulator, If anyone will be interested, when it's done I'll see if I can get a few in the communty. sharing is caring

[Grobblere]

Just remember fitting bigger injectors might also make the car heavier on the juice even at low rev's.

Personally i will be fitting an extra injector in the mix for high boost on my car

[P3g4sus]

I also have gotton a CA box for you, If you are interested, Poizen not to run into your parade bud! And if its fine with poizen?

[Daniel]

...
Lately I could smell petrol all over the show, checked under the hood and I concluded either leaky injector/s or perished O-ring seals on them...

Just to put it out there. The petrol tanks seal may be perished and the fumes are now coming from the boot.

[poizen]

yes that also goes but he can see a lil pool of fuel on the manifold so it a leaky bastard injector

my sr box should be fine so you can buy mine or peggys up to you

i wish you all the luck with your sx and if there any problems or you not sure ask me or anyone of the sumwhat friendly sx guys

oh n post pics whats wrong with you

[skinnyguy]

hmmm.. good point, only lack of evidence in my case is no fumes in cabin, only when my window is open or I walk past the front of car.. then there are the little pools of petrol between the intake runners right by the injectors, ithink nr 3 is the culprit.... for now i might just replace seals, have them ultrasonically cleaned, then in april break some bank on new ones including some other goodies.

fwiw I think i should replace the tank seal anyway....everything on this car is 20 years old.

hell, the fuel filter should prolly have been first on the list!

But I love her.... more than my girlfriend sometimes
Let's hope she never discovers this forum!!

[poizen]

hmmm.. good point, only lack of evidence in my case is no fumes in cabin, only when my window is open or I walk past the front of car.. then there are the little pools of petrol between the intake runners right by the injectors, ithink nr 3 is the culprit.... for now i might just replace seals, have them ultrasonically cleaned, then in april break some bank on new ones including some other goodies.

fwiw I think i should replace the tank seal anyway....everything on this car is 20 years old.

hell, the fuel filter should prolly have been first on the list!

But I love her.... more than my girlfriend sometimes
Let's hope she never discovers this forum!!

i think we all married to our sx'x my gf gave up trying to get me away from my sx 2years ago

[skinnyguy]

I'm still waging that war.. she has the attention span of a gnat, and i have told her this, and she agrees.... book of world records, a woman agreed with a man pointing out a flaw in said woman, anyway, the point being she actually offered to help when i was taking off the gearbox to do the clutch replacement...no hard labour for her, just handing tools and lighting etc, it lasted about the time it takes to smoke a cigarette... one cigarette, she was over it, found her in front of the TV lol.

10 points for trying!

[POWDER]

I'm still waging that war.. she has the attention span of a gnat, and i have told her this, and she agrees.... book of world records, a woman agreed with a man pointing out a flaw in said woman, anyway, the point being she actually offered to help when i was taking off the gearbox to do the clutch replacement...no hard labour for her, just handing tools and lighting etc, it lasted about the time it takes to smoke a cigarette... one cigarette, she was over it, found her in front of the TV lol.

10 points for trying!

Firstly, very welcome to the Forum bud (a year late but n e way), and congrats on ur first post.

I do not think though that you will need to delete it, it was valid and well thought out questions that could be very useful to others too.

Ha ha ha ha, ye bud, I agree with you, same thing happens with my wife, helps for the time it takes to have a smoke (usually includes passing 1 spanner) then POOFFFFF, off to the the evil one eyed thing in the lounge.

[Big Nirvash]

Not to throw a proverbial spanner in the works here....
But seems like you know your way around a car. Maybe its not the gearbox that is wrecked, maybe the bushings are gone... I know that they wear out relatively quickly, especially because old poly-urethane/ plastic goes hard and basically disintergrates after short span of time.

Also, since you did a clutch replacement yourself, you should have checked the spigot bush.... could be grinding noise.... sounds more like this to me rather than an individual bush in the box....

just my 2c worth....

Welcome and congrats from another noob.

Good luck.

[skinnyguy]

Nirvash, POWDER, Thanx guys.

Nirvash, you have a very good point. here's another spanner in the works,
It is noisy in 1'st, 2'nd, 3'rd, NOT 4'th, 5'th.

2'nd and 5'th are the worst, 1'st is almost as noisy but then again certain internals in the box are rotating at their highest velocity.

Spigot seemed fine, replaced release/thrust bearing, greased up what needed to be greased...but here is a bit of embarrasing info I forgot to add..

I was so excited to pull the box off and get the new clutch in, when we got the box off we realised, as oil was pouring down my shoulders and my friends face....we forgot to drain the gearbox oil

Also we kinda had to rotate the gearbox here and there to get it off the motor... do you guys deem it possible, that because most of the oil poured out before we started rotating the box to get it off, 20 years worth of steel filings were now in suspension in very little oil, and as we rotated the gearbox all this made it's way into the geartrain?

I am scared to death of the inside of ANY gearbox, so am reluctant to take it off the bell housing and check stuff out, but I guess if I do it according to the manual I shouldnt be able to screw it up THAT bad lol.


the only reason i am hesitant to blame the spigot bush is 4'th gear... it's dead quiet!

further investigation required methinks...

[djtreble]

I was so excited to pull the box off and get the new clutch in, when we got the box off we realised, as oil was pouring down my shoulders and my friends face....we forgot to drain the gearbox oil

Lol, bet you smelt like cat piss for the next few days

I don't think the rotating of the gears with no/little oil in would've caused the issue. If there is metal filings in there it doesn't matter how much oil is in there, it would have the same effect.

Follow the manual and look at a few online guides and re-doing the box will be easy enough. If that fails you go and buy a new box, no worse off than when you started.

You will quickly find the issue with the box if there is one when you open it, so you can determine then if you can rebuild it or if it's worth it.