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lildriver213
02-27-2009, 10:19 PM
can u tell me the trq. specs on the top end on a 03 ltz400???????
ifixtheyride
02-28-2009, 08:27 AM
The top 4 main bolts you should coat with oil then torque in a criss cross pattern.
Initial torque: 18.0 lb-ft
Final: 33.5 lb-ft

After tightening the head bolts, move down to the smaller bolts and nuts if you removed cylinder and torque those to 7.0 lb-ft.

This is right out of the manual
dvx304racer
02-28-2009, 11:20 AM
if u have a manual can u tell me the specs (how much play) for the crank bearings thanks
cataway
02-28-2009, 12:46 PM
sorry guys but your manual is wrong ! its more like 42 ft lb
knoxville9
03-02-2009, 06:47 PM
no hes right
kawiracerj
03-03-2009, 01:06 PM
would not recommend 42 ft lbs! thats too much.
airmobile101
03-04-2009, 05:30 AM
Your gonna wanna tighten more than what the book states if your using the original hardware. I did mine right around 40 ft lbs.
ifixtheyride
03-04-2009, 05:25 PM
Originally posted by dvx304racer
if u have a manual can u tell me the specs (how much play) for the crank bearings thanks

Sorry for the delay:
The manual basically tells you how to check connecting rod deflection
1). Measure piston end of conrod deflection. spec is 3.0mm or .12"
2) measure big end side clearance(crank end) push conrod all the way to one side then place a thickness gauge in the other side to measure clearance. spec. is 1.0mm or 0.04"
3) run out, of course you have to have the crank out for that but run out is 0.08mm or 0.003"

Typically if you grab the conrod and pull it up and down there should be no play
cataway
03-04-2009, 06:11 PM
i will dubble check the numbers ,but it seams to me ron hamp said its 44ft lb ?? any way we are going to find out.
cataway
03-04-2009, 06:20 PM
44 confirmed
http://www.thumpertalk.com/forum/showthread.php?t=717544&highlight=head+torque
airmobile101
03-05-2009, 04:41 AM
After reading that @ Thumptalk , it does make sense. I remember I had a hell of a time getting my head bolts out. Im gonna be tossing a BBK in my bike in a month or so. Thats some nice info to have. 44 ftlbs. it is!:devil:
ifixtheyride
03-05-2009, 05:50 PM
Any other torque values wrong in the manual? I've done mine by the book a couple times now and have not had an issue but I will admit I usually give it more then 33 cause my torque wrench is old and it just don't feel right. It's same old argument how tight for spark plug how tght for oil filter old timers always say "give it a quarter turn and then some". Ha Ha.