Hey klxers, It's big bore time! My kit is on order and I would like to get everything ready. I am a autotech so tools are no problem but I would like to know the tool sizes for the large and small head bolts so I can have my tool guy get me some fresh (non worn ) ones.

Thanks
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If I remember it's a 10mm allen for the head bolts and 8mm socket for the rest. Torque wrenches and patience is all that's needed.

 

Great! Thank you

 

You'll also want an 8mm and 10mm wrench to loosen the oil carrier assembly. The lower cam tension bolt is 19mm. The head stays require a 12mm socket and 14mm socket + wrench.

PS: I forgot to order new crush washers and one of the oil carrier banjos weeps a bit now. Will replace the washers at next oil change.

 

Thanks! Head bolts were 8mm but luckily I bought a new one also. Bike is all apart waiting for parts.

 

A good torque ratchet is a must when putting it back together. I have 1/2" and 1/4" versions in my toolbox. Used the 1/4" most of all on the rebuild.

 

Got that covered. I am a autotech by day and a engine builder/machinest at night.

 

Make sure you test fit your parts and have some assembly lube. I snapped a cam side engine bolt (the long thin one, 8mm head) when reassembling my big bore kit and had to tear it all back down. Bolt snapped off at the threads......inside the engine case. Had to take the bike to a shop and have them get it out.