M30 lambda and in line fuel pump

[pianist]

Right here it goes
To keep long story short I have a car that when I bought (not in this country) was 318 in papers but now when I was registering it and checks been done it appears to be a 316 lol

So cause of this now I have a fuel tank with no fuel pump in it and I had an idea to simply fit an in-line fuel pump an route the return line back to the tank.
The thing is I don't know what cars (make and model) I could use as a donors so I could go to scrap yard and look for. If you guys know of any cars that are using inline pumps from factory could you just list them pls.

Now the next question would be about lambda:
I have m30 lump and it comes with lambda on the "X" bit where two downpipes meet just before CAT (that's from e34 donor)
Now in m30 swap threads I never seen it mentioned or I have missed it I don't know but do I need to keep it or do I just bin it?

I seen in wiki m30 swap that two mentioned above downpipes are cut just before where they join and are mated to 325i exhaust (meening no lambda retained) don't know if different model or what?

Thank you in advance

[jimbom30cab]

If you keep your lambda it just plugs in under the battery tray

If you cut you exhaust at the down pipes and slot in a 325 exhaust you will probably loose the x pipe and lambda but this doesn't matter, car will run fine.

Plenty if new in line fuel pumps on e bay

All the best

[pianist]

So I can just not use the lambda then? And it plugs in under the intake manifold on this one I think.

The fuel pumps on eBay now, I seen them there but you know how it is with ebay, it might destroy the engine if the pump fails to deliver the presure so I was thinking beter stick to OEM stuff even though it might be from different car but will be made to last.

[MJJ_ZX6RR]

My M30 donor has the lambda also, and mine runs much, much better with it simply unplugged.

The car runs perfectly well on a default fuel map if it does not see the lambda, and there are no downsides that I have found. Fuel economy and power both seem great, I would recommend leaving it out of the system.

Martin.

[jimbom30cab]

Yes, I did the same Martin and it runs great

[pianist]

Nice one thats one problem less

Just this in-line pump to sort out now

[Bristol_Jer]

I'm not 100% sure, but I think early injection e30's had external fuel pumps?

Although it would probably just be easier to get a 2nd hand fuel tank with the pump and sender already in it, and then make up the pipes yourself

[walinsky]

I went the exact same route: http://www.e30zone.net/modules.php?name ... c&t=219886

Early injection e30's had 2 fuel pumps; I decided on using a pump (housing) with a return line; and fitted a (255 l/h) new TRE fuel pump: http://treperformance.com/c-66145-fuel- ... s-tre.html

You'll need to add a fuel pipe to your chassis (dirt cheap at the dealers) and wire up your pump (fuse 11).

[pianist]

So would I need a different pump housing from the one fitted in the 316 or is it posible to adapt existing one to accept the pump?

[walinsky]

You'll be looking for a twin pipe fuel pump with level sender unit. The single pipe one in the 316 only sports an overweight fuel level sender that you can't re-use.
Don't know what models they were exactly used on. Defective ones are up for grabs.
Btw the fuel feed line on a 316 will become your return line when converting to injection.

Do you realize swapping a 3.5 into a e30 is one step beyond distinguishing a carburetor from an injection engine?