1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

650 or 654 ccs?

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Old 09-06-02, 12:00 AM
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650 or 654 ccs?

What does each rotor surface endup displacing, 650 or 654? This would be in the 13b ofcourse

Last edited by Zulu; 09-06-02 at 12:05 AM.
Old 09-06-02, 12:13 AM
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654cc. meaning it's a 1308cc, not a 1300cc, meaning 79.8 cubic inches. woow.
Old 09-06-02, 12:42 AM
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A 13B rotary engine in terms of swept volume is 1308cc. In terms of opperational swept volume it is 2.6 litres as it works on a two stroke principle of one power pulse per rotor per eccentric shaft revolution.

So basically, a 13B is equivalent to a 2.6L 4 stroke piston engine.
Old 09-06-02, 12:44 AM
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Originally posted by REVHED
A 13B rotary engine in terms of swept volume is 1308cc. In terms of opperational swept volume it is 2.6 litres as it works on a two stroke principle of one power pulse per rotor per eccentric shaft revolution.

So basically, a 13B is equivalent to a 2.6L 4 stroke piston engine.

Apples to Oranges buddy

If you measure its total displacement like a normal engine, it's a 3.9 liter

It's classed as a 2.6 liter v6 for events based on "opperational swept volume"

and called a 1.3 liter by everybody else - firing chamber * 2.

Last edited by Zulu; 09-06-02 at 12:49 AM.
Old 09-06-02, 12:53 AM
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Uhm no. If you look at the actual displacement per revolution then a 13B is equivalent to a 2.6L pissed-on engine. This is how most road racing classes look at it so it's good enough for me.

*edit* Just saw what you added... so basically you're agreeing with me. Not sure where you get the v-6 part from though.

Last edited by REVHED; 09-06-02 at 12:56 AM.
Old 09-06-02, 01:00 AM
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Originally posted by REVHED

*edit* Just saw what you added... so basically you're agreeing with me. Not sure where you get the v-6 part from though.
Mine has some low-end grunt still, so, v6

Oh, and also it's tollerances to nitrous are often related to that of a v6. (no, don't tell me to install a 25 shot in my other thread about simple things for a few more ponies ontop of what I've already got )

Last edited by Zulu; 09-06-02 at 01:22 AM.




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