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Location:
Tasmania
Registered:
May 2002
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Re: 2T/3T pistons
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Sat, 18 December 2004 23:47
 
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If you are using a 2T crank, you need to use 2T or 2T-G pistons.
If you are using a 3T crank, you need to use 3T or 3T-GTE pistons.
2T, 2T-G, 3T, 3T-GTE rods are all the same dimentions and can be swapped around.
If you are using a 2T-G head, the piston tops need to look like a 2T-G piston. So if you are using 3T-C pistons, take all 4 of them plus one 2T-G piston to a machinist. Tell the machinist to make the 3T-C pistons look like the 2T-G piston. He will only have to machine the exhaust valve releif deeper. The inlet valve relief is already OK, and similar to the 2T-G one.
If you like you can double check the clearance by assembling on piston in the motor with the head and a few valves. Turn the motor over by hand. Use marking dye or something, I don't know.
One old timer setup is to use the normal 2T crank, with 18R-G pistons and the block bored out to match = about 1.8 liter. A more common setup now is to use a 3T crank with 3T-C pistons machined slightly = 1.8 liter. The best setup is to use a 3T crank, and 89mm forged Weisco pistons = 2 liter.
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| | Subject | Poster | Date |
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2T/3T pistons
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cooter | Sat, 18 December 2004 07:44 |
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Re: 2T/3T pistons
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YelloRolla | Sat, 18 December 2004 23:16 |
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Re: 2T/3T pistons
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Jonny2TG | Sat, 18 December 2004 23:47 |
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Re: 2T/3T pistons
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YelloRolla | Sun, 19 December 2004 10:02 |
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Re: 2T/3T pistons
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cooter | Sun, 19 December 2004 09:02 |
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Re: 2T/3T pistons
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cooter | Mon, 20 December 2004 04:36 |
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Re: 2T/3T pistons
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Jezza | Mon, 20 December 2004 21:47 |
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Re: 2T/3T pistons
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cooter | Tue, 21 December 2004 08:28 |
