81DOHC LWr Crankcase Bolt Pitch

[Azdevil09]

Does anyone know the thread pitch on the M8 bolts for the lower crankcase? Appears to be 1.25 but I just wanted to check with those that may have more sophisticated ways of confirming.

 

[brettp]

Take one out and take it to the hardware store. Put it in the bolt finder. Done

 

[SenseAmidMadness]

Bolt finder at a hardware store is a solid way. 1.25 is standard pitch for M8 threads.

The "more sophistocated way" that is fairly cheap to keep in your toolbox is a thread pitch gauge. Little leaves fold out of the gauge with specific tooth pitches and you find the one that matches perfectly. I have yet to meet an M8 thread on a Japanese motorcycle that wasn't 1.25 -- but the fact that I've said that means someone will inevitably comment about one that exists.

 

[brettp]

I need to invest in a bolt gauge like the hardware stores. They are expensive for what they are but when you need it, you need it.

 

[Nayoalex]

Sí. Son M8*125
In fact, the engine is all standard metric threads. 6*100-8*125-10*150