TDC marks on cam gears aren't lined up....how do get them straight?!
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TDC marks on cam gears aren't lined up....how do get them straight?!
I'm in the process of replacing a broken timing belt on my B18C. The "up" marks on my cam gears now look like this:
I've removed the timing belt, so can I just rotate the left gear counterclockwise, and the right gear clockwise to line up the "up" marks? Will rotating the cams independently of the crank damage my engine? If so, how will I get the gears to TDC?
Modified by ebelp at 4:09 PM 5/5/2003
I've removed the timing belt, so can I just rotate the left gear counterclockwise, and the right gear clockwise to line up the "up" marks? Will rotating the cams independently of the crank damage my engine? If so, how will I get the gears to TDC?
Modified by ebelp at 4:09 PM 5/5/2003
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Re: TDC marks on cam gears aren't lined up....how do get them straight?! (ebelp)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ebelp »</TD></TR><TR><TD CLASS="quote">So as long sa the crank is lined up, I can position the cams as I please?</TD></TR></TABLE>
NO!!!
First, put your crank 90degrees away from TDC. That way, NONE of the pistons are up on TDC. Then you can rotate your cams any way you want.
When the cams are lined up, arrows up, marks aligned; THEN all the valves are closed. Then you can rotate your crank back to TDC & put on the belt.
NO!!!
First, put your crank 90degrees away from TDC. That way, NONE of the pistons are up on TDC. Then you can rotate your cams any way you want.
When the cams are lined up, arrows up, marks aligned; THEN all the valves are closed. Then you can rotate your crank back to TDC & put on the belt.
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Re: TDC marks on cam gears aren't lined up....how do get them straight?! (ebelp)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ebelp »</TD></TR><TR><TD CLASS="quote">And you should always rotate everything counterclockwise, right? Never clockwise?</TD></TR></TABLE>
That's important AFTER you put the belt back on. It has to do with too much tension on the waterpump/tensioner side of the belt. If you turn it backwards it's more likely to pull the tensioner & skip a tooth.
That's important AFTER you put the belt back on. It has to do with too much tension on the waterpump/tensioner side of the belt. If you turn it backwards it's more likely to pull the tensioner & skip a tooth.
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Re: TDC marks on cam gears aren't lined up....how do get them straight?! (JimBlake)
So in my situation above, after I get the crank lined up, what's the best way to get the gears to TDC?
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Re: TDC marks on cam gears aren't lined up....how do get them straight?! (LegoZ81)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">NO!!!
First, put your crank 90degrees away from TDC. That way, NONE of the pistons are up on TDC. Then you can rotate your cams any way you want.
When the cams are lined up, arrows up, marks aligned; THEN all the valves are closed. Then you can rotate your crank back to TDC & put on the belt.</TD></TR></TABLE>
hmm i never thought of it like that.
<<<< LOUD ticking at idle, and really pissed that i cant fix it.
how did you break the timing belt?
First, put your crank 90degrees away from TDC. That way, NONE of the pistons are up on TDC. Then you can rotate your cams any way you want.
When the cams are lined up, arrows up, marks aligned; THEN all the valves are closed. Then you can rotate your crank back to TDC & put on the belt.</TD></TR></TABLE>
hmm i never thought of it like that.
<<<< LOUD ticking at idle, and really pissed that i cant fix it.
how did you break the timing belt?
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