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 karmannghia60
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| posted on April 8th, 2003 at 10:53 AM |
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Flywheel size
How do I measure the flywheel size? Is it the diameter from outer edge of tooth to outer edge of opposite tooth?
Raf
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 vw54
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| posted on April 8th, 2003 at 11:16 AM |
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What do you want to determine... Clutch n pressure plate size or wether its a 12V or 6 V flywheel
12V have the O ring seal on the inner section where the dowel pins are
If you want to measure it for clutch then measure the opening where the clutch sits.
Other wise i dont know what your measuring it for. Unless you want to fit a 12V flywheel into a 6 V gearbox bell housing ???
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karmannghia60
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| posted on April 8th, 2003 at 11:25 AM |
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Hi Dave
I am putting a 1916 into a 356 (60 model). The flywheel on the engine now measures 275mm from outer edge to outer edge. I was told I need a 180mm
flywheel
Raf
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vw54
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| posted on April 8th, 2003 at 11:44 AM |
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Raf
I think that the 180mm is refering to clutch size... there either 180 or 200mm
I would go with what yr saying and measure the OD of the ring gear to see if it clears in the bell housing of the gearbox first
With a more powerful 1916 engine you would be better off with the bigger clutch size of 200mm for better power distribution through the clutch set
up.
The other thing will be how far the flywheel sits of the engine and into the bell housing... do you have enough room this way and will the starter
motor engage the flywheel ring gear
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aussiebug
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| posted on April 8th, 2003 at 01:47 PM |
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The old 6v cars have a flywheel with 109 teeth. These usually have a 180mm clutch, but the 1965 and 1966 bus and type3s are 6v (109 tooth) and have
the larger 200mm clutch.
The 12v bugs (68 onwards in Aus) have 130 teeth and a 200mm clutch.
For a 1916 engine you will need the 200mm clutch, which means either clearancing in the bell housing for the fractionally larger 130 flywheel
(it's about 3mm wider), or finding one of the 109 tooth flywheels with the 200mm clutch.
If using the 109 tooth flywheel - you have to use the 6v starter with it's larger shaft, and run it either on it's normal 6v, or run it on
12v if the car has been converted. It will survive many years on 12v, so long as you don't crank for long periods (it will heat up faster than a
12v starter on 12v).
If using a 130 tooth flywheel, you HAVE to use the 12v starter with it's smaller dia shaft, which means changing the pinion bearing in the bell
housoing to suit, or alternatively, using a semi-auto 12v starter which has a shorter shaft - it doesn't use the pinion bearing at all.
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TheGermanFolks
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| posted on April 8th, 2003 at 04:35 PM |
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6 volt 200mm flywheels are really popular with the sandrail guys here in the states. I like them because you can run the 6 volt starter. Put a 12
volt solenoid on a 6 volt starter, and one crank and that baby will fire right up.
Scott R.
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vw54
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| posted on April 8th, 2003 at 05:53 PM |
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Well said Rob.... i couldnt remember the sizes n teeth numbers.
But I know 6V 200mm flywheels are BLOODY hard to find here in Aussie.
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