My e30 318is s52 swap thread

[etxxz]

Solution.

Take intake manifold off.

Get a "new" One

Enjoy.

no manifold should be bending/ribbing. You can also shave the fins and create an extra centimeter or so of clearance. Upon installing the new manifold, check all hoses and make sure all the plugs go to the correct components.

and about the FPR, stock is probably better. my s52 track car (now 1/2 a car) uses the stock obd2 FPR.

[BigD]

You probably forgot to hook something up or something fell out, like the ICV hose out of the manifold.

Don't give up just yet. Take it as an axiom that the manifold can't expand and figure out precisely what you are seeing. Something is either loose or broken.

[windsor318is]

its on the entire side where the throttle body mounts, the side with all the ribs people grind down if there booster is rubbing. huh so its a waste of my time installing that regulator then? i figured i could maybe stop it from leaning out, assuming it was a fuel problem. i think i might take it to a shop to look at....ive almost given up here.

EDIT: know that i put it all back together, it ran for 2 minutes and cut out, now im really confused. ill have to get this thing to my mechanic.

[BigD]

I'm sorry if you've answered this already but did you ever say where exactly the manifold appears to be expanding? The collector, and if so where on it? One of the runners?

The regulator shouldn't make a difference unless it's stuck open - if unplugged it can cause an excess of pressure but not a lack of it (ie lean run)

[windsor318is]

i cant take the vid, my camera is crap, cant see shit with it. i took some shit apart today, and i have made no progress. i tested all the fuel injectors, i though i didnt have the vacuum line connected to the fuel regulator, but i must have cause that made no difference. i cant see that i have anything connected wrong, can someone explain exactly from what lines to run this aftermarket FPR, im a little confused if i connect the IN line from the car directly to it? and the OUT from the fuel rail to the FPR and back to the car line? i think this could be one of my issues, i was also going to throw the M50 injectors in, just to see what happens.

[e30s52]

if you have the obd2 manifold why not try that? see if your manifold is the problem

[windsor318is]

k thats it im making a point of it to take a vid on my tripod tomorrow, i hope it turns out, everyone ive told looks at me like im crazy lol!

id also like to figure out whats wrong, cause im going to smash it into a tree soon if its not driveable. im still waiting for the resonator from fucken italy...

[etxxz]

i just can't see the manifold expanding...its pretty damn hard, even it were cracked it wouln't just expand. i'd like to find out what you problem is your car should still be hauling pretty good even with decent a vacuum leak

[e30serg]

If you can get some "T" adapters, you could hook it up to any vacuum line coming out of the manifold. Maybe even on the booster line. This will let you see if you have any vacuum at all. If you do make a video, make sure to use a tripod or lean the camera against a wall or something. It might be hard to see the "expansion" if the camera is shaking while being hand-held.

Let's figure this one out!

[BigD]

Guy where's our manifold expansion video?

[windsor318is]

Sounds like you definitely have a major vacuum leak. When you get on the gas, the vacuum the engine is pulling increases, so the leak may not happen until you step on the gas. Do you have a vacuum gage you can hook up?

where sound i hook up the gage if i can get my hands on one?

[BigD]

Sounds like you definitely have a major vacuum leak. When you get on the gas, the vacuum the engine is pulling increases, so the leak may not happen until you step on the gas. Do you have a vacuum gage you can hook up?

That's what I'm thinking too - but if the manifold broken enough to deform, I just have a hard time believing the engine would continue running with such a leak - but it would explain why it's happy at idle, but runs like shit under throttle, lean, and no brake assist...

[e30serg]

Sounds like you definitely have a major vacuum leak. When you get on the gas, the vacuum the engine is pulling increases, so the leak may not happen until you step on the gas. Do you have a vacuum gage you can hook up?

[windsor318is]

What is your check engine light doing? Do you have any codes?

you mean the one that doesnt function with the AKG harness adaptor lol!!! im going to have to to get a diagnostic plug reader to see what code its kicking out, ill need to scan it once in a while anyways.

BigD, the pedal feel IS hard as it is with the engine off!! i have no assist, i blead the fucken things for an hour, the fucken pedal moves like an inch from the very top. i have something hooked up ass backwards for sure, im going to get my tech support buddy to help me disassemble the manifold, he will figure this out in a heart beat.
also, after i had it running that day the brakes where actually applied a bit, enough to not let the car roll backwards. im not looking forward to pulling that strut bar off, ill take pics of how much i have to bend that bar to get it on...

Platanos- im using the wiring harnessing from a 325 obd 1 car, and also the matching DME label 413.

[platanos]

I am sorry that my comment really wont contribute to your thread but I am doing a 99 S52 swap in the next few weeks and I'm wondering what ECU/DME you are using? I was told that a M50 will work.....

I am going to read this thread in its entirity as there seems to be alot of info that I might be able to use.

Thanks!!