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Search: Posts Made By: drolston
Forum: Early V8 (1932-53) Today, 05:26 PM
Replies: 8
Views: 266
Posted By drolston
Re: Chapter 2. Missing at part throttle.

Did two fixes on separate (I think) issues. Fixed the primary carb float level from almost 3/4" to very close to 1/2 inch. Road tested to full throttle in low and second. Wound right up to 5,000...
Forum: Early V8 (1932-53) Yesterday, 08:08 PM
Replies: 8
Views: 266
Posted By drolston
Re: Chapter 2. Missing at part throttle.

I run an electric fuel pump through the mechanical pump. I have the cheapo fuel pressure regulator which has worked very well so far. The pressure is set a shade under 3 psi.

First, I am going...
Forum: Early V8 (1932-53) Yesterday, 12:26 PM
Replies: 8
Views: 266
Posted By drolston
Re: Chapter 2. Missing at part throttle.

My rebuilt distributor came with the same calibration and vacuum brake adjustment, which I backed off to where the brake has a light drag with no vacuum.

So again, is spark advance a suspect in...
Forum: Early V8 (1932-53) 10-18-2020, 09:41 PM
Replies: 8
Views: 266
Posted By drolston
Chapter 2. Missing at part throttle.

I am going to get this old flathead purring like a kitten if it takes me a year! Which I am well into.

On my recent "Missing at full throttle" post, you helped me fix that problem. Turns out two...
Forum: Early V8 (1932-53) 10-17-2020, 12:28 PM
Replies: 11
Views: 801
Posted By drolston
Re: Am I the only one??

it does not take much "skill" to turn a wrench. But it takes a lot of "knowledge" for that application of skill to have a good outcome. This site is a remarkable open source of great knowledge...
Forum: Early V8 (1932-53) 10-16-2020, 02:05 PM
Replies: 8
Views: 360
Posted By drolston
Re: What’s a quick test for temp sending unit?

Swap it into a car with a working gauge and see if it registers the same as the working sender.

Can be done without losing more than a few tablespoons of coolant as you swap senders.
Forum: Early V8 (1932-53) 10-14-2020, 06:15 PM
Replies: 60
Views: 2,076
Posted By drolston
Re: Marvel Mystery Oil and Marvel Classic Motor Oil

It is probably a really good product for old flatheads, with increased zinc for our flat tappet cams, and detergents to prevent sludge build up. But at $9.00 per quart, plus shipping, it is a little...
Forum: Early V8 (1932-53) 10-13-2020, 06:06 PM
Replies: 58
Views: 1,565
Posted By drolston
Re: Autolite Spark Users Only

That is the same symptom I just tracked down on the "Missing at Full Throttle" thread. Turned out to be a broken connection in the spark plug cable to cylinder #2. With the engine at idle pull any...
Forum: Early V8 (1932-53) 10-13-2020, 01:27 PM
Replies: 58
Views: 1,565
Posted By drolston
Re: Autolite Spark Users Only

Wait, wait! Did these two plugs come out of the same engine at the same time? If so, the problem is not the carb.
Forum: Early V8 (1932-53) 10-12-2020, 08:21 PM
Replies: 27
Views: 952
Posted By drolston
Re: Missing at full throttle.

Cleaning the plug worked! Now firing on all 8. Smoother, faster idle and passed the throttle slam test in second gear. Almost. No missing, but started to lose power approaching 4,000 rpm. Then...
Forum: Early V8 (1932-53) 10-12-2020, 02:24 PM
Replies: 27
Views: 952
Posted By drolston
Re: Missing at full throttle.

Turns out the distributor end of #2 plug wire was broken. Replaced the end and measured continuity okay with the Ohm meter. But that cylinder was still not firing at idle. Replaced the carboned up...
Forum: Early V8 (1932-53) 10-10-2020, 06:41 PM
Replies: 27
Views: 952
Posted By drolston
Re: Missing at full throttle.

Good call Bill OH. The spark plug wire for #2 cylinder with the black plug registered open circuit on my ohm meter. The others read about 4,000 Ohms per foot, which is correct for spiral wound...
Forum: Early V8 (1932-53) 10-10-2020, 02:35 PM
Replies: 1
Views: 146
Posted By drolston
Vacuum Brake on a Crab

On a rebuilt crab distributor, the piston seems a little sticky in the bore. How easy should the piston move? Should the piston be lubed or stay dry? There was some grease on the leather pad; what...
Forum: Early V8 (1932-53) 10-10-2020, 01:09 PM
Replies: 27
Views: 952
Posted By drolston
Re: Missing at full throttle.

Good suggestion. I will test the secondaries, and if they are okay, change the distributor cap.
Forum: Early V8 (1932-53) 10-10-2020, 01:07 PM
Replies: 27
Views: 952
Posted By drolston
Re: Missing at full throttle.

I am at about 500 ft elevation. Changed all three carbs from .045 to .047 main jets because the plugs were whitish. Now they show a little brownish, which seems more normal to me. Not getting any...
Forum: Early V8 (1932-53) 10-09-2020, 08:44 PM
Replies: 27
Views: 952
Posted By drolston
Re: Missing at full throttle.

Progress Report, or not.
Disconnected the progressive linkage from the secondaries, so that they stay closed at all times; but still missing at full throttle. So it is not the end carbs.
...
Forum: Early V8 (1932-53) 10-08-2020, 01:47 PM
Replies: 27
Views: 952
Posted By drolston
Re: Missing at full throttle.

By the time I got my set of Super97s in December 2014 they had fixed the problem of leaking plugs. They still had quality problems though. One barrel would not deliver any fuel. They replaced...
Forum: Early V8 (1932-53) 10-08-2020, 01:25 PM
Replies: 27
Views: 952
Posted By drolston
Re: Missing at full throttle.

Correct; 12v and .035 plug gap. That could be the problem. I will regap plugs down to .030 and see if that helps.
Forum: Early V8 (1932-53) 10-08-2020, 01:19 PM
Replies: 20
Views: 2,153
Posted By drolston
Re: 1941 instrument panel

Rebuilt the cluster in my '41 in 2014 to clean and improve illumination. The early model year '41s had red needles which are very hard to see against the dark gold background, except in direct...
Forum: Early V8 (1932-53) 10-07-2020, 05:05 PM
Replies: 27
Views: 952
Posted By drolston
Re: Missing at full throttle.

Secondaries for 9super7 carbs are built without idle circuits. The only sync necessary is to be double damn sure both secondaries go completely closed at idle. I spent hours with that manifold on...
Forum: Early V8 (1932-53) 10-07-2020, 04:55 PM
Replies: 27
Views: 952
Posted By drolston
Re: Missing at full throttle.

Good idea; I will disconnect the linkage to the secondaries and try it again.

Pertronix recommends spiral core ignition wires, which I have.
Forum: Early V8 (1932-53) 10-07-2020, 04:52 PM
Replies: 27
Views: 952
Posted By drolston
Re: Missing at full throttle.

12v Pertronix module in otherwise stock crab distributor.
I will search through Charlie NY posts.
Thanks.
Forum: Early V8 (1932-53) 10-06-2020, 02:23 PM
Replies: 25
Views: 797
Posted By drolston
Re: 1941 convertible backfire to carb, with video

I would run a compression test to determine the overall health of the engine rings and valves. A sticking or worn intake valve can cause popping back through the carburetor.

How does the engine...
Forum: Early V8 (1932-53) 10-06-2020, 12:51 PM
Replies: 27
Views: 952
Posted By drolston
Re: Missing at full throttle.

The Schneider 248f is a pretty mild cam, and all but special purpose cams (Lakes, etc.) are designed to work with the stock distributor advance curve.

Any other ideas out there?
Forum: Early V8 (1932-53) 10-05-2020, 02:05 PM
Replies: 3
Views: 213
Posted By drolston
Re: 1935 coupe-transmission removal

Starting with the '49 shoebox you could drop the transmission from beneath. Before that, they all come out from the inside of the vehicle.
Showing results 1 to 25 of 500

 
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