400 EX Headbolt torque
 

Would someone please tell me the correct torque for the head bolts when re-assembling a 400 EX. I'm assuming all 4 bolts are the same.

400 EX Headbolt torque
 

Which bolt are you refering to I would be more than happy to look it up.

400 EX Headbolt torque
 

The cylinder head nuts ( acorn headed ) are torqued to 33 foot pounds


----- Gimpster-----

400 EX Headbolt torque
 

The 4 nuts are listed at 44N.m 4.5kgf.m and 32lbf.ft the 13 bolts (8mm) are listed as 22n.m 2.2kgf.m 16lbf.ft also take note the specs are for a '05
if you want I can scan the page.

400 EX Headbolt torque
 

Only one of those bolts on the cylinder head cover is a 8mm bolt, The other 12 are 6mm bolts.
Your specs are not the same as listed in my Honda service manual

----- Gimpster -----

400 EX Headbolt torque
 

oops! you are correct the 6mm bolts are not listed in my manual under that section. Under standard touque values it states 6mm nuts and bolts have a value of 22N.m 1.0kfg.m 7lbf.ft I hope this helps.

400 EX Headbolt torque
 

It also states to tighten those bolts in a crisscross pattern

400 EX Headbolt torque
 

Many thanks to those who replied. This gives me all the information I need.

400 EX Headbolt torque
 

I am glad to help out a fellow rider [img]i/expressions/face-icon-small-smile.gif[/img] If you want I can get you a link to where you can buy the shop manual, for around $40 US

400 EX Headbolt torque
 

I don't know if this is to late. but the 8mm bolt is torqued to 17 ftlbs. and the rest of the bolst are only 88 INCH ILBS. i know this for a fact because i had to Heli coli all my bolts becaue i over torqued them.. if you need anymore help let me know. i just put mine back together.