My 1992 GTI

[DocWalt]

A second OEM Bosch pump died on me. Awesome... Looking for a pump in the 'yard tomorrow, if I can't find one, I hope Amazon can come through for me.

Got this stuff in the mail today

[anyonebutme]

love the quattro shirt

[DocWalt]

Thanks!

Today I replaced the fuel pump & installed the wideband. The wideband needs to be mounted somehow and my interior needs to be reinstalled, but it's functioning at idle and steady RPM.

[anyonebutme]

pics or didn't happen

[DocWalt]

See below, abm

Wideband installed


Anti-chafe hole edging to protect the wiring. Using a factory hole in the firewall.


Neatly installed wiring, thanks to my brother. I ended up using the stock O2 sensor heater wiring to power the wideband, with a third wire running back to feed a narrowband signal to the ECU.


Still looks pretty good


On my first test drive, I was pegging the wideband rich at WOT, and cruise was ~11:1 AFR. After a bunch of adjustment, I'm now cruising at stoich, and WOT is fantastic. Spikes to ~12.5:1 initially, and rises to ~13.5:1 by redline. Dead on, IMO. So much faster now, and I'll probably see better than 20mpg, haha.

[stealthee]

[DocWalt]

Classic picture! Too bad it's only an 8 valve.

Got my block back from the machine shop. Don't worry, the hone is perfect, there's just some discoloration left over I rust converted it after masking and cleaning everything, then painted it black. No pics of the black, it's too dark now.

[DocWalt]

All painted up:

[DocWalt]

The block is back from the machine shop, they had to reinstall one of the bearings because it wasn't installed properly.

I also picked up a 50mm intake from a couple of half drunk British guys over for H2O:


The 50mm runners look huge compared to my 42mm runners, haha.

[DocWalt]

I spent a few hours this morning dropping in the pistons and torquing down the rod caps. I dropped the crank in the other day and it specced out at .04mm clearance, dead on. The rod clearance was .05mm, also dead on. The ring end gaps were a little odd. The first rings were perfect at .35mm, the second rings were all a bit too large (according to the Bentley service manual that I have, maybe there's updates) at .6mm. Weird, but nobody makes rings for a hone, only for oversized pistons. Oh well.





A bit of boredom led to this comparison between the 42mm (on top) and 50mm runners:


I have a feeling this is why the fuel pumps died. The entire surge tank under the car was filled with muddy looking sludge.