S54'd e30 (FLORIDA)

[ian332isport]

You can bin that then. Certainly not needed.

Ian.

[turk]

hehe cool,

this is what the nib of the fuel pump looks like, lloks like a banjo fitting type of thing. has a tiny little ball bearing inside. i have removed this and put a blank threaded sleeve on


Could this be my problem?

[Dave_M3]

If there is a little ball bearing inside it'll be a non-return valve anyway.

Should still run without it though once it has built up the pressure at the rail.

[turk]

so does anyone know what this plugs for? Its not Maf...

[UweM3]

just an idea.
why don't you finish your engine install and THEN try to start it

[turk]

is virtually finished, bar prop and custom gbox mount, oh and exhaust

[Dave_M3]

I'd agree with Uwe... that plenum will be a nice mess once the thing fires up on those weak E34 engine mounts!

Unless you've changed them since obviously.

[0010]

Also whats this plug for?

thats for the air mass meter

[ian332isport]

thats for the air mass meter

I did wonder that, but Adem's engine is a 2003, and that should have a 5 pin MAF connector. They stopped using the 3 pin plug in June 2000.

Ian.

[turk]

That's not the maf. Ian is right maf is a 5 pin plug. This is spare.

With regards to the mounts I have an m5 mount one side and m3 mount other side. So should be fine ;)
Might hold the engine 10-15mm higher so bonnet clearance may be fun, some bonet lining may have to come out.

[jmpwr]

As was said before the fuel pressure is important. My expierience of those walbro pumps is they often dont supply full pressure. I have tested a number of them and they all dropped pressure and would not sustain 5 bar. Stick a gauge in the line and check. Once the pressure dropped the engine would cut out similar to your car.

[turk]

hmmmm, where does one get/make a suitable gauge?

This is an 8bar pump in theory, so should be able to hold 5 bar all day long.

[jmpwr]

If you go to a hydraulics supplier you will get a gauge and fittings suitable to do the job. A 10 bar gauge would be fine. Or splash out and buy a fuel pressure gauge kit.

[turk]

hmmm, im on it

[Jhonno]

With regards to the mounts I have an m5 mount one side and m3 mount other side. So should be fine ;)

You would be surprised..

[turk]

We'll see how it goes, if they start to fail i will probably order the Akg ones. but it is only a weekend road casr for now...

[Jhonno]

Mine used to move enough to lock the steering sometimes on the way to work.. Ok I was often running behind.. That had 10mm+ of clearance.

[turk]

Did your exhaust catch the steering uj? coz that used to happen on my m52. This being lhd there is nothing really near the steering uj...

[Kos]

Mine used to move enough to lock the steering sometimes on the way to work.. Ok I was often running behind.. That had 10mm+ of clearance.

did you keep a spare pair of pants in the car

[Jhonno]

Did your exhaust catch the steering uj? coz that used to happen on my m52. This being lhd there is nothing really near the steering uj...

I know it is LHD, my point was more about the amount of movement from just using it on the road..

[Jhonno]

Mine used to move enough to lock the steering sometimes on the way to work.. Ok I was often running behind.. That had 10mm+ of clearance.

did you keep a spare pair of pants in the car

Freshly pressed..

[Dave_M3]

Friends M50 locked the column on his car as he only used E34 M50 mounts.

As it was in the middle of a 3rd gear drift on a left-right S-bend it was a case of..... "how soft do you think that bank will be, Dave?" as we waited for the inevitable

[turk]

similar happened to me on a 4 lane roundabout, defo not fun, will be making sure theres plenty of clearance.

[0010]

worked it out now, its for the oil level sensor

[turk]

Ahaa. Well done sir. Many thanx

[turk]

So got an in line pressure gauge, fitted it between output of pressure regulator and engine fuel line. When the engine starts pressure is approx 4 bar, when it stalls it rises to 5 ish. Does this mean the engine is getting enough pressure at the fuel rail?

[jmpwr]

Are you sure the fuel system is correct? The regulator controls the pressure by returning fuel to the tank. You seem to have a static pressure that is normal (5bar) but when the engine runs the pressure is to low.
If you run the pump without the engine running the pressure should rise to 5 bar and then the pressure regulator should cut in and return fuel to the tank to maintain 5bar. That shows the regulator is working. If you slowly clamp the return you should see the pressure rise as the fuel cannot return to the tank. The pressure would rise to the maximum pressure of the pump. Do not allow it to rise to high or hose may fail or connections.
With the car running the pressure should be 5 bar if it is lower then you can have running problems. I found with the walbro pump it would sustain 5 bar static but when the engine was running the pressure would drop. There is a difference between pressure and flow. A good pump should provide the high pressure and flow.
Make sure your gauge connection is measuring on the pressure side rather than the return to the tank.

[glenn]

even with a 3 bar pump this engine should still start and run.
it does however, look like there is still quite a few things to connect adem

[turk]

its defo on the pressure side, Like u say it does rise to a max of 5bar even though it is an 8 bar pump ( in theory)

I will try it without the engine running and make sure i have the right pipe going back to the tank.

I only had the plenum off to test if there was any running difference with it on/off, (and there wasnt) but apart from that the exhaust is the only thing not been made up yet.

[jmpwr]

The control of pressure in the system is the regulator not the pump so if your pump is rated for 8 bar as i said clamp a return and you will see 8 bar or more. The pump on a normal e30 has a 2.5 or a 3 bar regulator but the pump will deliver a higher pressure if you block the return you will see the pressure rise to the maximum static pressure of the pump when you create flow then the pressure drops. So the pump is best described by the amount it can flow at a certain pressure. This is where i found the problem with the cheap fuel pumps unlike the likes of the oem bosch pumps.

[turk]

on a different subject quickly, someone has said using the Z3m S54 engine arms will hold the engine lower and closer to the back rather than the m3 ones.

http://www.realoem.com/bmw/showparts.do ... g=11&fg=10

They do look a bit different to the m3 ones. What do we reckon? anyone tried these?

Ps. the engine is now running without stalling, A faulty tps was to blame

[DanThe]

Cross reference the part number and they turn out to be standard M50/M52 E36 arms

Well worth a try

[turk]

So, today I finally made up mu gear selector. After lots of grinding drilling and welding i can finally change gears not that I have a prop to drive anywhere but hey

[Dave_M3]

What gearbox are you using?

[turk]

E60 diesel.