Type 4 engine rebuild: take 3

[SGKent]

[busdaddy]

Fingers crossed, sounds promising.
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[Clatter]

Keep us posted brother.
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Bus Motor Build

What’s That Noise?!?

[orwell84]

So far so good. I got a good look at the bell housing and it’s bone dry. It’s not leaking from there. The drive plate at the right angle let’s you see the gallery plugs and cam plug. It’s not leaking much at all actually. A couple drips from around the oil filter...the usual suspects above it to check.

I drove it about 100 yards...new backing plates or the pads are rubbing so I have to go through that. I don’t really feel any drag though, just noise. Transmission seems fine so far. I am doubting some of my reasoning about all the disasters that happened. All that smoke really shook me up. I start a new engine and I lose my mind. The transmission shift linkage had been slightly out of adjustment and the low fluid didn’t help. I’m still not sure what happened.

I am down to sorting out the little chicken shit...bumped the distributor as I had left it loose to adjust it and flooded the engine trying to start it. Wire fell off choke. Some arcing from a loose condenser. Other choke hung up or misadjusted. Then I ran out of gas.

The cross bar cup bushing and spring is a hardware store arrangement. The correct one came yesterday. The linkage needs some truing up. It’s fine when you work it from the engine, but does it’s own thing after a couple pulls with the pedal. All the little things when putting in a new engine and the stock carbs that haven’t been on for 25 years.

Some new things I did notice. Engine runs very quietly with a lot less vibration. The first couple times I started it I was sure the starter wasn’t engaging. It just sort of whizzes around. It always used to feel like I was cranking an old washing machine and it sounded like a barking metal seal. Hopefully I’ll have it all sorted out over the weekend.

[SGKent]

[orwell84]

[SGKent]

[orwell84]

Finally! I finished adjusting the rear brakes last night and securing the fuel lines.

My ring brake-in drive went really well. Smooth and quiet with lots of pickup and no hesitation off idle. The transmission shifted smoothly through the gears and seems to actuality be smoother and better timed with the original carbs.

The brakes were noisy at first because of the backing plates but diminished as I drove. They are only rubbing slightly in a couple of spots where the stamping is raised on the backing plate. I got rid of most of the noise by tapping those down with a hammer and dolly.

I am still having flooding problems at startup. The carbs were just slapped on and the linkage eyeballed so it needs some attention. We put on a German 009 that was known to be reliable with a known advance curve just to get it running.

There are the usual kinks to sort out as I drive it into reliability. It’s been a long haul getting here. I dropped the last engine November 17, 2019.

I have really appreciated all the help and handholding through this whole endless project.

[SGKent]

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“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin

[RalphWiggam]

Nice work. Now get out there and get some hard miles on it.

[orwell84]

[crownline]

It will be snowing up there next week
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1972 Bus 1700 cc Single Carb. But not a progressive.
Barelymuvin
Wish I still had the ones I got rid of.

"It"s got some dings and dents and neither of us is going to SEMA."(Update, I went to SEMA in 2019 but the Bus stayed home)
[url=http://www.vw-mplate.com/mplate-8446.png]Click to view image[/URL]

[SGKent]

[orwell84]

[orwell84]

I adjusted the chokes to be slightly open. They were completely closed before. Starts are way better. No flooding. I’m getting the hang of how they work. Take offs are so much better even running a 009. It will take me some time to dial them in and I still need to rebuild an original distributor I have with the working vac can I have.

Planning to hook up the original heater boxes soon. Last night I got all the lights working. In spite of the new wiring, I still needed to clean up some grounds, fuse connections and wiggle some light bulbs.

[skills@eurocarsplus]

sweet. i'm glad it's coming together for you
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[SGKent]

you want to set the fast idle cams to a specific speed. Then adjust the chokes to where they are open in a couple minutes and don't burble as you drive off. I used to do it by feel - meaning touching them with my finger or screwdriver to feel the resistance to opening. There is also an unloader on most, which means that when the engine needs more air when it is cold, the vacuum opens them a certain amount. Make very small changes at this point.
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“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin

[orwell84]

Just a quick update. Drove over to Vermont to visit my fiancé and my friend Paul. I have been telling them for many months that my bus will be ready in 2 weeks.

We went for a nice easy drive to a flea market and a tour of the back roads.

Paul has been helping with the bus the last couple of years with lots of good advice, a hard day of hands to get me over the hump and much needed friendship and encouragement. He really seemed to enjoy driving it.

I have been taking it slowly but so far it’s gone well. The carbs work really well so far with a nice transition from fast idle to off the chokes, though adjusting chokes when it’s room temp outside is probably not a huge accomplishment. Lots of torque on hills. Oil pressure was 40 psi & 3200 rpm with the oil temp @ 210*F. That was kind of my last big concern. I thought that was pretty good for running 10-30 in the summer. I think Phil’s blueprinted stick pump helps as well as the new pressure relief piston and spring. Getting the oil clearances on the numbers didn’t hurt either.

So far I have only set up the carbs by eyeballing the linkage but they already way better than the dual Weber’s I ran years back. There is no bog and no need to nurse the throttle through a long warm up before getting underway. It also works very nicely with the auto trans. I’m really pleased.

This weekend I am adjusting the valves, tightening stuff up and chasing down a couple minor oil leaks. Earlier this week it passed inspection. I’m planning to enjoy it for the rest of the fall for some foliage viewing and just putting around.

[orwell84]

I guess it’s time to call this thread over. 1000+ miles on the engine and all is well. I have been on a couple camping trips and drive it to work fairly often. A couple weeks ago, I had it up to 80 on the highway. It was still pulling strong but that was good enough for me. I’m currently going through a long list of little things on the bus and getting the stock heating system finished; heater cables, tubes, etc. The front end needs some attention and I will be getting back to the remaining sheet metal work...mostly redoing some old work that was solid and functional but could be better. Mostly, I plan to DRIVE it as often as possible and maintain, fine tune and conserve.

[crownline]

Glad it's going well and your enjoying a nice Bus.
_________________
1972 Bus 1700 cc Single Carb. But not a progressive.
Barelymuvin
Wish I still had the ones I got rid of.

"It"s got some dings and dents and neither of us is going to SEMA."(Update, I went to SEMA in 2019 but the Bus stayed home)
[url=http://www.vw-mplate.com/mplate-8446.png]Click to view image[/URL]