Magna Tips, Tricks and Info


Carb Sync (for NON California Magnas)

So you need to Sync the Carbs? Don't pay a wrench! This is a relatively simple task, which takes approximately 30 minutes (especially after you have done this a time or two). If I can do it, so can you!


Cylinders are numbered as follows
The vacuum ports are the philips screws visible in the upper corners of each carb. Remove the philips screws and washer from each carb (1, 2 and 3) and screw in the brass connector tubes. Just hand tighten the connector tubes. Plug the vacuum gauges into the vacuum ports on these three. Carb 4 has a vacuum hose. Start the bike and let it idle for a few minutes to build up pressure. Take a pair of sissor clamps and clamp off the hose BEFORE detaching it from the plug. Then slip on the gauge #4 hose. DO NOT TURN OFF THE BIKE!

Adjust the calibration screws "on the gauges" until each is steady or barely moving.

Cylinder #1 is the base cylinder. You will adjust the other 3 so their vacuum matches whatever is on #1. Sync the carbs in this order, 2 to 1, 3 to 1 and 4 to 1. Repeat as necessary, as the next carb may throw off the previous.. Up under the carbs you will see 1 sync screw on the back row and 2 screws on the front row. You can see which screw adjusts which carb by turning the screw while the engine is running and watch which vacuum gauge changes its reading. Use your "L" bend screwdriver to adjust the screws until all the vacuum gauges read the same.

Once the above is accomplished, you are done! Turn the bike off, disconnect the gauges, put the philips screws back in and re-attach the vacuum hose. No need to do anything more.

Note: Murky from the Delphi forum provided the following "I added one more trick myself. It's not part of the official procedure but helps get them even more accurate. After completing the above, set the idle at 2000-2500 RPM and fine tune the sync settings. When the engine is spinning faster it exaggerates any vacuum differences enabling you to sync up better,and when you restore the idle back to normal the sync is even closer.

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Chrome Plating

I have been asked MANY times where to send plastic items to be chromed. I sent my parts to and highly recommend:

Pot Metal Restorations
4794C Woodlane Circle
Tallahassee, FL 32303

As for your metal around. These are often very heavy and expensive to ship any distance. I found a local business:

Metro Plating & Polishing
4110 Howard Ave
Kensington, MD 20895
301-493-4009 or 800-938-5811

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The 94 and up Honda Magna stock tire sizes are :

Recommended maximum cold tire pressure: FYI, I recommend Metzler brand tires over the stock Dunlops.

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VIN - Vehicle Identification Number

Have you ever wondered how to read your VIN? Wonder no more...the VIN is broken down as follows:

1987-1988 Super Magna
1 = Country of Origin (1 = USA, 2 = Japan)
H = Manufacturer (H = Honda)
F = Vehicle Type (F/2 = Motorcycle)
RCxxx = Model (RC210/RC211 = VF700C, RC280 = VF750C)
x = Check Digit (Computed with other numbers in the VIN)
H = Year (H = 1987, J=1988)
A = Assembly Plant (A = Marysville Ohio, M = Hamamatsu Japan)
xxxxxx = Sequence Number

I have the interpretation for 94 and up Honda Magnas, but I just haven't had a chance to add it to this page yet.

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