Ag02M5

Thanks for looking.

I am moving my adjustable wur to a more accessible location and need to lengthen the two fuel lines (red arrows).

My question is how would you do it?

Would you build new fresh lines? Splice the originals? If building new, any hints would be appreciated since I have never made them before.

In addition, I am going to add a fuel pressure sensor in line.

Here is a pic just to clarify. We are talking the rubber lines going to the fuel head.

One other thing...anyone know what the 12 point bolts are on the gold (WUR) bracket (blue arrow)?

Thanks!

RT

Staffan

Very interesting indeed!
Will you be able to adjust the WUR without removing it?

To lengthen the fuel lines I would remove them and have a shop dealing with pressure hoses have a look at them. If you find (or allready know) a good shop, making new hoses won't cost that much.

I would think it's a XZN bolt at the blue arrow.

Ag02M5

Staffan...I think you are right about the bolt. Thanks!

Here is an early prototype but yes the leask WUR will be fully adjustable without removing anything.

RT

nathanUK '81 930 G50

What a great idea. I have read many posts about what a PITA it is to adjust the WUR due to the location of it to fine tune.

Staffan

Nice this is so helpful, keep those pictures coming!

I have so many things to deal with this winter, hope to have the time and energy to make my WUR adjustable as well. I really need to do something about my fuel mixture, haven't done any logging but had someone read my AFR while accelerating through the gears, it's too lean.

My plan is to log AFR at different RPM's and boost levels, looks like the AFR is fine at full boost and low rpm's, but when I reach 4.5K or so it goes above 12.5 and increases with RPM. Need to figure out what to do.

RT, what does your AFR curve look like and have you decided if you will run with some type of switch?

Ag02M5

i will be posting soon but plan to go w zeitronix. rpm, boost. afr. fuel pressure logged. my own rpm switch integrated to zt. also their new gauge but i want a pillar mount which doesnt exist. cheers. i will also log with the andial to see what if any effect. i want to learn at what pressure does the fuel head stop adding more fuel.

Staffan

Wow, you plan to use the output from the Zeitronix box to trigger your switch?!This is getting more interesting for every post!

Ag02M5

Thanks. I like your DIY style as well.

The immediate plan is to use the Zeitronix to trigger the rpm solenoid.
However, I have the Andial enrichment also. If I can get the Andial to give me additional fuel past the adjustable WUR (i.e. greater pressure drop before I reach the limits of the fuel head), I will have the Zeitronix control the Andial and use the rpm module for the rpm solenoid. With the Zeitronix, you can have a complex trigger. I was toying with the idea of triggering the Andial say at 5k rpms AND AFR < 12 or something like that.

I will need to get the Zeitronix hooked up before any of those tests.

As far as the current thread, I am going to order some new hose once I find out the ID and reuse the fittings. I am going to barb splice a tee into the one line and connect my fuel pressure sender. May move to AN fittings later but too much hassle.

For adjusting the WUR installed, it will probably require a mirror and a flashlight but thats a heck of a lot better than removing the intercooler for every adjustment.

Ag02M5

Is it still getting more interesting?

Staffan

Lol, I won't tell you how exited I am, you would just start teasing me..

Staffan

RT put me out of my misery, can't wait any longer, what's the status on your WUR project?!

Ag02M5

Haha. Needed to get the mounting plate modified a bit.

Ordered new fuel lines and vacuum lines from GermanSupply.com. Will reinstall sans fuel pressure sender and rpm solenoid. Will add those in near future (well the foreseeable) future.

RT

Staffan

RT how did this turn out in the end?
Will remove my WUR the next couple of days and thinking about doing something similar.

Ag02M5

Worked fine. I just ordered new high pressure lines and reused all the connectors. I also got new stainless hose clamps made for that type tubing.

The wur mounting plate also worked nicely but it could be modified just a bit. I haven't done the rpm switch as I may go straight to the digiWUR.

I'll try to take some pics.

RT

Staffan

Thanks RT, great stuff.
Is that aluminium piece 4 or 5 mm thick?

Yeah, pictures would be great, thanks!