Update and improvements on my Oxy build

[ajdenette]

Looks like you are getting close to running again

[grelland]

Not much left now

[Wejjy]

Just read the whole lot, and loved seeing your progress. Ive added this to my watch list so will be keeping up with it from now on.
I also have a load of 3d printed parts in my builds! Such a useful toy/tool

[grelland]

Thanks

It runs

https://youtu.be/1KfEPdsx1JQ

[andy198712]

great news!!

[grelland]

Well, to be more specific: in ran, then it cought fire, and then I am rebuilding the engine compartment

It sounds a bit dramatic, and it was, in the moment it happened, but I managed to put it out quickly and the only damage seems to be on the fan shroud and firewall:

33232574_10216669188352297_7177470855100760064_n.jpg

I removed the fan shroud and it seems to have started around the #4 injector:

innsug-tb.jpg

The cable/connector is toast, but the injector is hopefully ok:

kabelklyse.jpg

[grelland]

After some investigations I found a damaged o-ring on the pressure side of the #4 injector:

o-ring.jpg

So my theory is that there has been a small leak through this o-ring and the fuel/vapour cought fire from a backfire when starting. The cables and paint then cought fire. Luckily I managed to cut the power to the fuel pump immediately, so no more fuel was sprayed at the fire.

So after a day or so with disassembly and cleaning, the engine bay now looks like this:


I have replaced most of the burned wiring, and have a couple of injector connectors coming in today. My son has stripped and prepped the fan shroud for new paint, and I have to ask my wife nicely if she can pull out the sewing machine again.

And I have ordered some automatic fire extinguisher system

But the good news is that it ran REALLY well before it cought fire, so I cant wait to get it back on the road again

[Steve Arndt]

Glad you put it out before things got worse. Your car is beautiful.

[grelland]

Glad you put it out before things got worse. Your car is beautiful.

Me too I hate to think of how this could have ended.

My eldest son has taken responsibility of the fan shroud and it is getting there.

I also picked up the last few connectors today so most of the parts are ready to go back in within a day or two

[grelland]

And when I came back from a weekend away, this was in my driveway:

shroud.jpg

[grelland]

Soon back to where I was a week ago;) (minus the diamond stitch...)

[grelland]

I spent a lot of time verifying that there are no gas leaks tonight, before I attempt to start it again, but I struggled with getting the fuel rails to seal properly. Probably because I made my own set of holders and I suspect the do not put an even force on the o-rings.

So I reverted back to the original fuel rails, and now everything is nice and dry:

gamle rails.jpg

I hooked up the computer, and I cant get a signal from the MAP sensor, so I need a little more debugging before I am ready for start-up again. I suspect that the wires may have been damaged in the fire, but I will see tomorrow.

[Ian Godfrey]

It may be somewhere in the thread but I can't find it...
What brand of throttle bodies are they, they have a lovely straight shot from the injectors.

[grelland]

It may be somewhere in the thread but I can't find it...
What brand of throttle bodies are they, they have a lovely straight shot from the injectors.

These:
https://www.vwspeedshop.com/product.php ... 395&page=1

Bought through Mario at thedubshop.com

[Ian Godfrey]

thanks for this, I see they have IDA pattern as well