39BuickEight

1939 Buick Special restoration

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engine update, got it back this week, during the week Dad cleaned it up and painted it, and put the timing chain gears, new timing chain, camshaft, and breather on, today we put the decal and rebuilt fuel pump on

we are having trouble figuring out where to bolt on the intake and exhaust manifolds ;)

 

 

 

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Edited by 39BuickEight (see edit history)

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Looks good Billy !!

Just a suggestion but when you get it up and running, I'd check the fuel pump pressure. Your pump is similar to but not the original fuel pump. I had one like yours and an original. I put the one like yours on first purely because it looked new. It had just over 5 lbs of pressure which was a little on the high side. The original had only a tad under 3 lbs which is about where it should be. Too much pressure "may", and a big "may" cause flooding. Just something to look out for.

Danny

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That's interesting, that pump must be very similar to an original because the rebuild kit for an original one from Bob's worked...??? I will keep that in mind.

We did find that it has been changed at least once because we found an old part of one in the oil pan, the arm that rides on the cam was laying in there, must have broken off. Is the one on there a vintage replacement?

Edited by 39BuickEight (see edit history)

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Billy,

I have attached a few pics of fuel pumps. Pics 1 & 2 are of a NOS pump I bought on ebay. Pic 3 is of the NOS ebay pump and an original pump that came with the car. Pic 4 is of a NOS pump I bought here at a swapmeet. Pics 1, 2 & 3 are of a pump correct for a '39. You can tell by where the bail attached to the body. It sits 90 degrees to the fuel line. I currently have the pump like yours on my motor but had to put a spacer between the pump and engine body to lower the pressure. I will eventually get around to putting the NOS ebay pump on the engine. In pic 4 you can also see the original screen filter that I took from the original pump. I too will get a kit from Bob's for my NOS ebay pump before I fit it as I don't know if the diaphragm currently in it will be ok with ethanol.

I wouldn't be overly worried about your pump other than to say it is worth checking that the pressure isn't too high as it was with mine.

Danny

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I may be out to lunch here but on my MOPAR's (1940 and 1941 Dodges) the fuel pump glass bowl points down. Is the Buick different in that respect?

Nice looking engine.

Phil

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In this case, if you were to invert the whole '39 pump so the bowl points down the arm wouldn't contact the camshaft. That could be a problem. :):):)

The '38 had a bowl that points (hangs) down. I don't thick it makes that much difference in the pumps performance or effectiveness but it is easier to clean the crap/sediment out from the glass bowl of a '38 once it has been removed.

In the case of the '39, it is a bit of a bugger though, and messy, to get the crap out of the pump body.

Interestingly enough though, in the owners manual, (GMH Australia) it does show the fuel pump inverted but in this case it was just some boofhead didn't proof read it before the book was published and notice that the picture was up side down. :):):)

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I have seem a few different "photos" in different manuals with them hanging down, although, like Danny said, it wouldn't contact the camshaft that way. I think the bigger 39's with the big engine did point down? Bob told me that, like a lot of things, this pump is a one year wonder. I really love learning about this stuff as I move along.

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Man oh Man! I'm dreaming of that day. I wonder if you're already driving it in your dreams like I do. Good work, Pat

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A beautiful job on the engine. The engine looks wonderful except for the hose clamps. If you ever take your car to an AACA National event they'll dock you for every one of those modern hose clamps. The correct clamps are available from Bob's Automobilia in California.

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Thanks!

Any idea what goes in these 3 holes? It looks like a square headed plug was in the bottom one in a before pic, but the other 2 looked empty. Are they supposed to be?

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Edited by 39BuickEight (see edit history)

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G'day Billy,

1) The first hole to the left of the distributor, mine has a t-type, brass, water cock. I found it on 2 of my engines. It's a bigger version of the one at the bottom of the radiator. I can take a pic if needed.

2) The hole under the distributor is a left over from '38. '38s had a little scaled plate that bolted on there for adjusting to different octanes.

3) The third is where the oil pressure line connects into for your oil pressure gauge.

Danny

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Billy, my '50 has the oil pressure gauge piped in to the one beneath the distributor. The lower on can be used for supply to an oil filter, althouhh the oil pressure could come from there as well. There ar probablythree or four more plugs in that main oil galley.

Ben

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Billy,

Looks like you are having some great progress! I noticed in the pictures of the engine, the stand that you fabricated. Any issues with rigity? It looks fairly easy to fabricate and my only worry would be it shifting. I noticed some bracing, and was just wondering. Thanks Matt

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Thanks Danny and Ben!

Matt, well, you can see we used uni-strut for the materials, which is incredibly strong. We weren't even going to put the braces on the bottom at first, but we had the welder out and had the material. That was probably a good idea. It seems to be holding up fine.

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Looking good Billy.

Do you have the timing hole cover ?? I only found out they had a cover when looking through ebay years ago. I have seen them since on ebay on the very odd occasion.

Danny

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Danny, no timing hole cover, didn't know there was such a thing, how does it attach?

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It just pushes in (see the pics and it becomes obvious). I've posted a few pics of the thing as sometimes parts maybe with/in the car somewhere but you don't recognise what it is. I've collected 5 '39 engines and none had the thing. It was also missing on my '38. It is supposed to be there.

Maybe there is someone out there that has a father with a friend that could knock up a die to stamp a few out. :rolleyes::rolleyes:

It's a bit of a non event piece but hey, if you can find one and get it, why not put in on. Since I got this one on ebay years ago I became a little curious about these and now always look to see if they are there when I look at other engines. I've seen a few engines and have only ever seen two others.

Danny

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Five minutes in the sheetmetal shop, two minutes at the spot welder and you're done. All you need is a one to copy.

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I was thinking big West.

Flooding the world wide market for straight eight timing mark covers. :):):)

Danny

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I am thinking if the cover was on there the mice would have had a lot more trouble nesting in the flywheel cover pan :)

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I was thinking big West.

Flooding the world wide market for straight eight timing mark covers. :):):)

Danny

That's my problem. I never think big.

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Is the fuel pump mounted the correct way? It seems like the glass bowl should be on the bottom. I like the work you're doing.

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