Protek 321B Crankcase

Old 09-26-2021, 12:28 PM
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Default Protek 321B Crankcase

Hello, does anyone know if there is another crankcase that the same as the Protek 321B v2? My case is damaged but I want to still keep the motor.
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Old 10-01-2021, 01:24 AM
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Originally Posted by ceh329 View Post
Hello, does anyone know if there is another crankcase that the same as the Protek 321B v2? My case is damaged but I want to still keep the motor.
I think a case from one of these would work. Think itís same engine besides carb and head. 321b was based off this. 321b has 21j carb. 321bv2 has 22c carb.

https://www.amainhobbies.com/o.s.-sp...qzqqkqyzxxactz

https://www.amainhobbies.com/o.s.-sp...qeqswqyzxxactz


http://www.osspeed.com/eng/08buggywc_e/08wcbuggy.html




https://www.ebay.com/itm/265262293289

I think this should work but Iím not 100%. Better off trying to find a used old engine from someone for a case

https://www.amainhobbies.com/o.s.-en...aeq2qaxzxxactz
note it says this under it.
This is a replacement main engine crankcase for the O.S. 21 VZ-B V-Spec engines. This product is expected to become available for purchase on Friday, November 12, 2021





Last edited by jersey; 10-02-2021 at 09:59 PM.
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Old 10-04-2021, 11:15 AM
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Originally Posted by jersey View Post
I think a case from one of these would work. Think itís same engine besides carb and head. 321b was based off this. 321b has 21j carb. 321bv2 has 22c carb.

https://www.amainhobbies.com/o.s.-sp...qzqqkqyzxxactz

https://www.amainhobbies.com/o.s.-sp...qeqswqyzxxactz


The Choice of World Champions O.S.SPEED 21VZ-B V-Spec II




https://www.ebay.com/itm/265262293289

I think this should work but Iím not 100%. Better off trying to find a used old engine from someone for a case

https://www.amainhobbies.com/o.s.-en...aeq2qaxzxxactz
note it says this under it.
This is a replacement main engine crankcase for the O.S. 21 VZ-B V-Spec engines. This product is expected to become available for purchase on Friday, November 12, 2021
Awesome, thanks for the info.
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Old 10-04-2021, 11:24 PM
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Originally Posted by ceh329 View Post
Awesome, thanks for the info.
no prob
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Old 10-05-2021, 01:26 AM
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Can we use xz-b spec 2 crankcase with v-spec 2 internals? Does anyone know?
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Old 10-05-2021, 05:10 AM
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Originally Posted by cansoykal View Post
Can we use xz-b spec 2 crankcase with v-spec 2 internals? Does anyone know?
Vspecs and 321b are short stroke.
xzb spec 2 is long stroke
my guess is no stuff wouldnít line up in case
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