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So where are you with repairing the stripped thread! Just saying!

OK here's how you fix a stripped 1/4-32 thread. Drill and tap the hole 3/8-24. 5/16-24 won't give you enough metal at the thread root to re-tap to 1/4-32. Now take a piece of steel or aluminum and cut the 3/8 thread on it with a die. The starting side of a die has a chamfer or lead on it. This...

When I built my 302 V-8 engine I played around with several different designs and sizes of carburetors. What I settled on was, at the time, the smallest O.S. carb available. It has a bore of about .200 (5.10mm). I then measured the critical sizes, bore, air bleed port, barrel diameter etc. and...

Steamchick working on early Triumph engines with Amal monoblock carbs you could buy slides with different cutaway to modify the off-idle performance. When the Japanese street bikes came out with the CV carbs (constant velocity) that solved the problem. CV carbs have a throttle disc for air...

The plans are sent as PDF files and are in Imperial size sheets 8-1/2 x 11 which is close to Metric A4 I believe.

Yes the plans are still available. Send me a PM and I'll give you my email address for the information

Steamchick, There had to be something else going on with your carbs. I have worked on motorcycles since my late teens. (now 79) Everything from Whizzers, Cushmans, Triumphs, Ducatis, Gileras, and all the Japanese 2 and 4 stroke engines. I can honestly say I have never run across a carb that...

I have several of the smallest 'weed eater' carbs. Several fellows from the BAEM club used them on their engines. I was in my learning phases so I thought I would give one a try. Before I get into particulars let me say that the smallest WE carb is larger than most engines would require. Now the...

The revelation to me was looking into the throat of the carb on my Holt engine. At idle there is such a small gap between the throttle barrel and the venturi bore you'd wonder how the engine would run at all. This engine has a 1.00" bore and 1.25" stroke. At that point I make all my carbs small...

This is an over simplification but here's an intake manifold explanation. Older carbureted engines used a dual plane manifold. This was a manifold where the runners were on two planes. Each plane fed by one or two barrels depending on the carburetor (2 bbl or 4 bbl) Each plane fed 4 cylinders...

Steamchick, The most important part is the venturi itself. The reduced diameter increases the air velocity and thereby reduces the pressure at that point. (Vacuum) The reduced air pressure is lower than the atmospheric pressure so fuel is drawn through the jet. The amount of fuel is controlled...

Terry, First question. In regard to your air bleed circuit. Have you had luck with your previous builds using this design? This is what I'm referring to. I design my air bleed port to be fully open only when the throttle barrel is almost completely closed. I only use the air bleed circuit for...

Very nice job! At times I wish mine was a bit bigger.

Brian I have been following your builds from the start. I appreciate all your innovation and documentation. I'm a little perplexed with your new build. Basically you're building this engine because it has a distributor? By this I mean you basically abandoned your 2 cylinder inline build for...

Brian, I'm really curious. What does the distributor on that engine have that others don't? Being the old time hot rodder that you were I would think that you were fairly familiar with distributors. Not much to them really, a body, shaft, rotor, cap and wires.

Ok, where do I start? As a kid I was introduced to plastic model kits and fell in love. Over the years I have probably built hundreds ranging from ships, planes, military and automobiles. I still build and enjoy this hobby today. In my teens I met a group of fellows that were older than me and...

PM sent

Terry, You might find that you have excess dwell time with the size of your shutter window. The diameter of the magnets I use is .125 and my windows are just slightly larger and my 302 will Rev cleanly to 7800 rpm. (Not free rev) I use a Dave Sage ignition module with a universal 6-12 volt...

You're right. I just didn't know what equipment Brian had available.

Brian, a suggestion. Make a simple fixture to hold the shaft. Supported just on the ends. Mark the shaft where each of the lobes go and slide them on the shaft. Go on line and search 'protractor ' and print it out. (Degree wheel) Glue it to a piece of card stock and glue it onto the end of the...