im finishing up my ls vtec build. installed the cams(bc4) and torqued everything down. now when i put the timing belt on and rotate the motor after a couple rotations the belt slips and puts the cams out of time...any ideas what is going on here?

 

what do you mean it slips?

 

after i turn the motor over a few times it will eventually jump one or two teeth and out of time

 

take the timing belt off and see if you can turn the cam shafts easly.
samething happen to my friend his head was so warped the cams locked up and wont turn.

 

do i need to tighten the tensioner up after turning it a few times? it was not tight when it jumped a couple teeth

 

Cams with stiffer springs aand larger primaries are usually tough to turn over. The belt has to be pretty firm. Also could be binding in the head.

 

what about the tensioner that i mentioned, does it have to be tight after a few turns?

 

bump

 

http://www.c-speedracing.com/h...t.php

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by singlecamy8 &raquo;</TD></TR><TR><TD CLASS="quote">what about the tensioner that i mentioned, does it have to be tight after a few turns?
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yes the tensioner needs to be tightened once u take all the slack out of the belt.

 

Use the method I use in this thread:

https://honda-tech.com/zerothread?id=1202479