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crf450r transmission oil drain bolt length

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Hello everybody. 

just have a quick question on why the transmission oil drain bolt is so long? does it need to be that long or can you tap the long hole leading and put a smaller bolt in? the reason is  because I stripped out the threads deep inside the hole and was wondering if instead of splitting the cases and putting a helicoil in or something if I could just tap the front part of the hole and put in a shorter bolt?

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On 5/14/2017 at 0:24 AM, Branden16 said:

Hello everybody. 

just have a quick question on why the transmission oil drain bolt is so long?

 

That is because the drain bold doubles up as a cover bolt.

So the worst that can happen if you tap threads in the cover and put a shorter drain bold in is oil sipping out between the cover and the case due to not enough pressure being applied in the gasket in that region.

Just take the cover off and put helicoil in. It is such an easy fix.

 

 

 

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