E21 Project Thread - Part 2

[Bassboy3313]

So Brian and I determined the leak to be the hose clamp on the fuel rail supply line. It's digging into the hose and not clamping it securely. I have the leak at the stupid fitting adapter where the hose meets the hard line, so I'll knock out 2 birds with 1 stone and fix both right away.

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[Jdesign]

Sounds like a smoovve idle. Excited to hear it in person. I hope you get the fuel leak sorted easily.

[Bassboy3313]

I have decided to overhaul the (almost) entire fuel delivery system. I have been wanting to get rid of the fuel accumulator that the oem kjet fuel system uses, but is not necessary for EFI and with the fuel hard lines looking a little crusty, now is the time. Here is what I will be replacing..

Remove bosch motorsports external fuel pump and replace with Walbro 255 external pump (ordered).

Remove e21 fuel filter (banjo fittings) and replace with e30 fuel filter (barb fittings).

Remove e21 fuel accumulator, not needed anymore.

Remove crusty fuel hard lines from tank to engine bay and replace with new hard lines. Got a quote from Blunttech for $105 shipped from germany for OEM prebent lines. I will be checking out the napa easy bend lines when I pick up the fuel filter and make my decision then.

Replace fuel hoses and clamps from hard lines to fuel rail and fpr with new.

[YoungCR]

Sounds great!!

[Bassboy3313]

Had to drop the tanks to completely remove the fuel lines. What a bitch!

I decided to order prebent lines from Germany through blunttech. Going to need a few new mounting clips as well.

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[YoungCR]

Didn't know prebent lines were available for our cars! I searched on a few sites too but not blunts I guess

[Bassboy3313]

YoungCR said:

Didn't know prebent lines were available for our cars! I searched on a few sites too but not blunts I guess

I've always just messaged blunt and he takes care of the rest. He has found me parts in the past that other places said were unavailable.

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[B C]

Blunt delivers the peen when others say the peen doesnt exist

[HipMF]

Not upgrading to 3/8" lines? 

[Bassboy3313]

HipMF said:

Not upgrading to 3/8" lines? 

I doubt bigger lines will ever be needed for the power levels I will be at. But please do explain your thought.

[HipMF]

Just future proofing for the boost addiction. Not that it's a big deal to redo the lines later...

[Bassboy3313]

Yay!!! Fuel lines and mounting clips showed up today from Germany

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[KaiserRolls]

Bassboy3313 said:

Yay!!! Fuel lines and mounting clips showed up today from Germany

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I usually buy mine in packs of 100 at menards

I’m talking about zipties Dave

Zipties

Dave

[Bassboy3313]

Fucking cheap ass bender kinked the supply line while trying to copy the old one. Now what to do, what to do...

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[Jeff]

Jesus what bender did you use?? I have one if you need to barrow it

[YoungCR]

Thought the lines were pre bent?

[Bassboy3313]

I ended up being able to fix it after picking up a better bender. The return line was prebent, but the supply line was not. Not sure why bmw did this as they both have almost identical bends. I was able to save 10 out of the 12 mounting clip bushings, which is better than I expected. The screw broke off in the other 2 and there wasn't any way to get it out. Shouldn't be an issue tho. So I cleaned up the underbody surface while the lines were out and painted/underbody coated it all. I also painted the lines to help prevent corrosion starting. I should be able to get the lines back in this week and put the tanks back in.

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[Jdesign]

Sheesh. I thought you were going to have to order more uber rare OEM lines from deh Germanz again. Glad you make it work, now where are the pictures?

[Bassboy3313]

Got the lines installed finally. What a pita. Had to use some pretty MacGyver tricks to get them where they needed to be and clamped in. Now to replace all rubber lines, install tanks and hook new pump/filter up.

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[YoungCR]

The lines look fantastic though!