vipers

iTrader: (8)

hey everyone.... i finally found out where the oil is leaking from..... first is the oil injection lines, they are literally cracked in half under that protective sleeve.... next is a tube that comes off the l/f part of the block (top of it)..... this leaks like crazy...... almost a quart a day!!!!! my whole driver side of the motor is covered in oil.... first off... what is that tube for??? turbo?? next, will new brass rings fix it?? how bad is it to drive w/ cracked oil injection lines???

also, i noticed that the exhaust backpressure hose (or whatever its called) is missing, and there is a big hole open on the side of my block.... is this bad, or can it stay that way???

thanks

vipers

iTrader: (8)

bump...

powrdby13B

cracked oil injector lines are likely to **** you up quick... i'd premix at this time...
are you talkin about the oil cooler line?

Kenteth

The port/hole on the back side of the block connects the cat converter to the acv. Its supposed to push 02 to feed the cat converter its catalyst. On S5 engines there are no exhaust backpressure lines.

I would either go premix or get SS oil inject lines.

powrdby13B

wait... just noticed... there's gotta be something REALLY fucked up there... those SS OMP lines DONT JUST BREAK...

Parastie

The lines are just plastic. Granted, they are think plastic and last for a good 15 years, but they are still plastic. Plastic gets brittle with age and I've known those lines to break.

Just pull them out, block off the OMP and run premix.

ilike2eatricers

Stock OMP lines are brittle plastic. Aftermarket stainless braided lines are available on ebay.

HAILERS

Just buy some new oil injector lines.

You live in Calif and need to pass emissions. So get/buy a line/fitting to go to the catalytic converter. It's for the Split Air, so to speak.

The oil line/fitting on the left side near the cas is for the turbo feed. That makes one wonder. You have a na made into a turbo?? So what happen here. Did you drill and tap a hole in the housing or install a turbo housing/plate??

RyoFC3S

iTrader: (1)

I beg to differ. I talked with my mechanic who's been working on FC's since they came out specifically about this, and he said he's never seen them fail unless he had accidentaly hurt them (crushed them with pliers, dropped something heavy on them, etc...). He said that braided SS are overkill because the stock ones work just fine. Obviously SS braided wouldn't HURT the engine, but he stressed that I should spend my money elsewhere.

He recommended I just get low mileage used ones, which I did. Also, if you premix, the whole system is virtually useless.

-Andrew

Kenteth

^^ I never said they were neccessary. I concur though, my omp lines didn't break until I tried to remove them. i said Eff-it when I realised how expensive they were, and have gone premix since that day.

But, if I were to buy new lines, they would be SS.

RyoFC3S

iTrader: (1)

Keneth, notice who I was quoting/responding to.

But I agree totally; running premix is a whole lot easier. I premix and have the oil injection system, but that is just because I want to be extra safe with my brand new engine.

-Andrew

ilike2eatricers

Maybe I should have said stock 15+ year old OMP lines are pretty brittle and can crack if you're not careful. I'm sure new oem OMP lines would last for the rest of the life of the car.

skatingsamurai

well
A- the SS braided ones are nice and shiney but that just one of the features.
B- you will never have to replace them ever
C- why not? if you going to be replacing them why not get ones that your going to know will last. sure they might an extra 40$ , but you never have the burden on you mind that the used omp lines that you bought might someday break while you still owing your car.
D- premix is good (deffending all you premix guys) HOWEVER. premix is typeically good if you either know what your doing. like to work on cars alot. have mods to high hell and beond, or like to get messy at the gas station figureing out the right ratio of oilto gas. so if you dont want to ever have to worry about your oil lines going bad and blowing up your engine? i would suggest the ss braied ones that are usually on ebay.

you can find them all over the place

steven

vipers

iTrader: (8)

no.... i did a t2 swap..... everything is from a turbo car....... engine, trans, d shaft, rearend... ect! the doner car had these leaks from the get go..... i was just too stupid to fix them when the motor was out!! i was on a very tight schedule ( i had 6 days to convert my s5 na to s4 turbo)(wiring and everything)

ilike2eatricers

Try tightening that banjo bolt and/or use new copper crush washers.

casio

eh, i think scalliwag is selling them for like $80 now. if, for any reason, you had to take the others out (if you replaced factory ones with new factory ones), you may end up with the same problem or be in more fear of breaking them (even though they are newer). the good thing about the plastic is that they're clear and you can see the oil in them. i guess even that doesnt guarantee that the system is working, though.
on that note, what do the factory oil lines cost new?

DerangedHermit

https://www.rx7club.com/showthread.p...=1#post3485550

RyoFC3S

iTrader: (1)

$20-26 brand new according to Mazdatrix depending on model/year/induction.

-Andrew