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What is the diameter of an EX throttlebody and a B20 throttle body?

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Old Aug 7, 2002 | 10:38 AM
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Default What is the diameter of an EX throttlebody and a B20 throttle body?

Hey,

Just wondering what the size difference was...thanks!
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Old Aug 7, 2002 | 10:51 AM
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Default Re: What is the diameter of an EX throttlebody and a B20 throttle body? (DevinW)

56mm
60mm

https://honda-tech.com/zerothread?id=158892


[Modified by Spade, 11:59 AM 8/7/2002]
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Old Aug 7, 2002 | 11:02 AM
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Default Re: What is the diameter of an EX throttlebody and a B20 throttle body? (Spade)

However, according to some news.....actuall measurements of the following trottle bodies has been 58mm.
b16a/b17a/b18a/b18b/b18c/h22a

So. If the H22 is 58mm I am going to say that I stand corrected and the B20 is 58mm.


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Old Aug 7, 2002 | 11:25 AM
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Default Re: What is the diameter of an EX throttlebody and a B20 throttle body? (Spade)

OK cool...I'm just wondering if my EX intake will work on my B20...
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Old Aug 7, 2002 | 11:28 AM
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Default Re: What is the diameter of an EX throttlebody and a B20 throttle body? (Spade)

ALSO wondering if the EX intake will 'hinder' the performance at all of the B20?

Thanks man!
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Old Aug 7, 2002 | 11:36 AM
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Default Re: What is the diameter of an EX throttlebody and a B20 throttle body? (DevinW)

Yes, the B20 will fit on the EX.

Yes, the EX will hinder the performance of the B20.
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Old Aug 7, 2002 | 09:42 PM
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Default Re: What is the diameter of an EX throttlebody and a B20 throttle body? (DevinW)

what mounts and tranny are u using for your swap?
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Old Aug 8, 2002 | 02:47 AM
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Default Re: What is the diameter of an EX throttlebody and a B20 throttle body? (Spade)

Hinder it by how much though?

I'm using a GSR or B16 tranny...for a list of what u need ask 'b20guy'
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Old Aug 8, 2002 | 04:41 AM
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Default Re: What is the diameter of an EX throttlebody and a B20 throttle body? (DevinW)

Would a Type R AEM cold-air intake work better? Also, would it fit with a B20 swap in my EK?

Thanks again...
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Old Sep 3, 2002 | 02:48 PM
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Default Re: What is the diameter of an EX throttlebody and a B20 throttle body? (Spade)

I just measured my '99 B20Z throttle body and it's inside diameter is 62 mm!

Strange...
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Old Sep 3, 2002 | 04:00 PM
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Default Re: What is the diameter of an EX throttlebody and a B20 throttle body? (DevinW)

I just measured my '99 B20Z throttle body and it's inside diameter is 62 mm!
so why did you ask? JK!

the internal diameter needs to be that in hte middle, not at the fluted neck of hte TB...

where did you get the 62mm from?

t..
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Old Sep 4, 2002 | 04:08 AM
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Default Re: What is the diameter of an EX throttlebody and a B20 throttle body? (tinkerbell)

Well my engine is still sitting in my garage and I took a ruler and placed it on the throttle body opening...I measured starting on the inside and it's diameter was 62 mm. I also measured the inside diameter of an intake for my d16z6, the part that connects to the throttle body, and it was 56 mm.

I asked before because ...uhh....I never had anything to measure it with! haha
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