Sunday, July 23, 2017

Run in videos

In the previous posts, I described how the Alfa has been playing "hard to get." After a few teething problems, the engine would only run when we sprayed QuickStart or gas into the carb throats. So now we had to shift our attention to the carburetors.

My first attempt to make the Webers bark was to clean the jets with a toothbrush and Sea Foam. They had a lot of varnish on them, but this didn't look like the problem.

Another possibility was the needle valves and the floats. And when I pulled the tops off, these were stuck (corroded) in the closed position. 

So, the carbs will need rebuilding.

Fortunately, I had another set of Webers and put those on the car. It fired right up and we ran through the 20 minute break-in procedure.

The next step is to bleed the brakes and clutch.

Sights & sounds:



Monday, July 17, 2017

Crankcase breather tube / filter

A quick project: use the existing breather tube and put a K&N crankcase filter (http://www.tdotperformance.ca/k-n-62-1600rd-crankcase-vent-filters-diameter.html?utm_source=google_shopping&gclid=Cj0KCQjwwLHLBRDEARIsAN1A1Q6yzyQ7uwu2-hjC-zvczrs1nztkr0XbvMnD6ZXccGBskbt5ThbA9A8aAnxwEALw_wcB) on the end of it.


Murphy's Law strikes again

Bad news / good news.

First, the bad news. When I was ordering parts for the engine rebuild, I did not order a new mechanical fuel pump. Guess what? The mechanical fuel pump is dead.

Now for the good stuff. 

We purchased a Facet "silvertop" (4-5.5 psi) pump from a local parts store (https://www.princessauto.com/en/detail/12v-electric-fuel-pump-solid-state-posi-flo/A-p8606279e). These are excellent units, but they are a little noisy and must be used with a fuel pressure regulator (the standard Alfa unit is fine). To get the system working, we ran a wire from the coil and grounded the pump on the hood latch. It worked perfectly but we will do a cleaner installation later...


Sunday, July 16, 2017

Update

The Alfa has been giving me the "full experience."

While we were getting the car ready (to start), coolant started to leak everywhere. It looked like I had a head gasket, or worse, problem.

My first concern was the head and / or block was warped. But the machine shop invoice revealed these to be in tolerance, and the builder stated the same.

I ordered another Victor Reinz gasket which also leaked badly. We found there was manufacturing differences; the first one being slightly thicker (0.2mm) than the second. So I wasn't keen to try a 3rd sample.

With a little Google work and some searches on eBay, I found a copper gasket (labelled as a Centerline) that looked very good. It had an embossed edge around the coolant and oil passages and a sealing film on both sides.

NOTE: We followed the directions and used Permatex Ultra Grey at the rear of the gasket.

So, the third time was a charm. The copper gasket worked and everything is tight and ready to go!