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Old 10-09-2009, 05:42 PM   #1
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Default Carb Replacement

I got an Orion CRF .21 engine with a bad Carb and I want to replace it. I am having a hard time finding an Orion carb and I would like to find an alternate Carb that will fit. Does anyone know if an OS carb will fit? Maybe some one will take a minute and post the size of the carb fitting for me?

I would be interested in any help I can get to find another carb.

Robert

Last edited by Robert Walker; 10-09-2009 at 05:53 PM.
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Old 10-09-2009, 05:46 PM   #2
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My friend put an RB carb on his. IDK if that helps but I know that one fits. I can go measure one of my OS ones give me a sec
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Old 10-09-2009, 05:49 PM   #3
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Ok the OS with thermal insulator on it is 14.96mm by my calipers. Hope that helps. If you need one I have a OS carb I could sell ya just pm me.
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Old 10-09-2009, 05:52 PM   #4
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Quote:
Originally Posted by iphatbob View Post
I got an Orion CRF engine with a bad Carb and I want to replace it. I am having a hard time finding an Orion carb and I would like to find an alternate Carb that will fit. Does anyone know if an OS carb will fit? Maybe some one will take a minute and post the size of the carb fitting for me?

I would be interested in any help I can get to find another carb.

Robert
if its the picco based engine , only picco carbs , if its the extech based then nova or OS will work . (nova carb preferably)
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Old 10-09-2009, 05:53 PM   #5
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Thanks a bunch. I will measure my Orion when I get home.
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Old 10-09-2009, 05:57 PM   #6
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My guess would be that you are having problems with the US Spec CRF? and the barrel gets stuck at 1/4 throttle?

Call Orion, they know about the problem. Insist on an Original, 1st gen Orion CRF carb. to replace yours.

If they won't work with you we can machine out the problem.
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Old 10-09-2009, 06:02 PM   #7
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Quote:
Originally Posted by houston View Post
if its the picco based engine , only picco carbs , if its the extech based then nova or OS will work . (nova carb preferably)
That is good to know. I think I will need a picco carb then.

Thanks for everyones help.
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Old 10-09-2009, 06:04 PM   #8
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I know the CRF.21 is a Picco based engine.
Picco based engines have a smaller dia.
lower carb body than Novarossi and O.S.
based engines. So you should be able to
use any of the Picco Evo2, Evo3 or Jammin
JPX carbs.
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