EVO All Evo Model Discussion

91Bottom Breather Thread Type

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Old Apr 1, 2024 | 12:15 AM
  #1  
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From: Tejas
Default 91Bottom Breather Thread Type

Can someone confirm the thread type on a bottom breather crankcase.

I recently rebuilt my EVO and need install the fitting.

I believe it’s a 1/4 NPT on a 90”.
 
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Old Apr 1, 2024 | 07:03 AM
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From: la la land jerzey
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90 hit the block on some use a 45 with a 3/8 nipple
 
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Old Apr 1, 2024 | 08:43 AM
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Huh???? All Mine are 1/8 Pipe...
 
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Old Apr 1, 2024 | 09:55 AM
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Originally Posted by Handro
Can someone confirm the thread type on a bottom breather crankcase.

I recently rebuilt my EVO and need install the fitting.

I believe it’s a 1/4 NPT on a 90”.
Correct.
 
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