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can u use a 20B rotor housing to rebuild 13B?

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Old 03-25-04, 11:11 AM
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can u use a 20B rotor housing to rebuild 13B?

as the title states....
Old 03-25-04, 11:16 AM
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Yes, but why?
Old 03-25-04, 11:20 AM
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More displacement !? I'd say no, cause if the housing is wider, you'll need wider rotors, longer e-shaft... you're basically castrating a 20b... by using two rotor faces...

Last edited by DCrosby; 03-25-04 at 11:22 AM.
Old 03-25-04, 06:45 PM
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Originally posted by DCrosby
More displacement !?
The increase in displacement comes from the extra rotor, not the size of the housings. There's no funtional difference between a 20B rotor housing and one for a 13B.

To answer your question, Batman, if you happen to have a 20B housing sitting around, you can use it. Otherwise, there's no point because 13B housings are far more plentiful and there's nothing to be gained by using one from a 20B.
Old 03-25-04, 07:09 PM
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20B rotor housing have a SMALLER exhaust port. Not ideal if you ask me...
Old 03-25-04, 08:22 PM
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I think the exhaust port is the same as the 13b housing. It's the exhaust sleeve that is restrictive




Originally posted by jspecracer7
20B rotor housing have a SMALLER exhaust port. Not ideal if you ask me...
Old 03-25-04, 08:38 PM
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ghetto fabulous
Old 03-25-04, 08:49 PM
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Originally posted by jimlab
The increase in displacement comes from the extra rotor, not the size of the housings. There's no funtional difference between a 20B rotor housing and one for a 13B.

To answer your question, Batman, if you happen to have a 20B housing sitting around, you can use it. Otherwise, there's no point because 13B housings are far more plentiful and there's nothing to be gained by using one from a 20B.
Thanks, that was the answer I needed.

Just to clarify things, I didn't even want to reply to DCrosby since his answer didn't even deserve a response.

I'm not looking to "increase" the displacement with a 20B rotor housing, but just happen to come across an oppurtunity to procure one for engine rebuild.
Old 03-25-04, 08:53 PM
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hey give DC a break hes a good member everyone makes mistakes
Old 03-25-04, 10:11 PM
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Originally posted by pluto
I think the exhaust port is the same as the 13b housing. It's the exhaust sleeve that is restrictive
Oops, that's right. The sleeve is a "D" shape whereas the FD sleeve isn't...
Old 03-26-04, 12:24 AM
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Originally posted by SurgeMonster
hey give DC a break hes a good member everyone makes mistakes
Clearwater........ ho hum
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