Checking for timing jump
06-29-2011, 06:45 PM
#76
Team Owner
that wear mark is from the belt being loose I was really hoping that you could find something. At this point I would strongly suggest to replace the water pump with a new Laso.
even though you have what seems to be a good pump if its been rebuilt then its suspect for the bearing migrating in the bore.
Period.
I have had to replace more than few rebuilds even though the bearing turned smooth and the precipitating factor was a belt warning with no other obvious indications on how the belt got loose.
In the long run, this step will save you lots of time from redoing this job. I promise!
even though you have what seems to be a good pump if its been rebuilt then its suspect for the bearing migrating in the bore.
Period.
I have had to replace more than few rebuilds even though the bearing turned smooth and the precipitating factor was a belt warning with no other obvious indications on how the belt got loose.
In the long run, this step will save you lots of time from redoing this job. I promise!
06-29-2011, 07:08 PM
#77
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Thread Starter
06-29-2011, 07:43 PM
#78
Race Director
06-29-2011, 07:54 PM
#79
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Thread Starter
08-11-2011, 11:11 PM
#81
Chronic Tool Dropper
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Looks like it might be the AC clutch wire, passed up to the air pump instead of forward to mate with the FOE harness where it passes behind the oil dipstick tube. Just a guess... 
08-11-2011, 11:34 PM
#82
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Thread Starter
08-12-2011, 01:27 AM
#83
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Thread Starter
Having not marked my cam gears for 45 degrees, it was already out of time, can I just count forward 3 teeth on each cam gear and install the belt and then rotate the crank to TDC for setting an accurate timing?
Last edited by Charley B; 08-12-2011 at 08:41 PM.
08-12-2011, 06:59 PM
#84
Rennlist Member
Thread Starter
What have I done wrong?
The cam sprocket dog on the passenger side (pic #2) is touching the backing plate. the dog on the drivers side (pic #1) has about a 1/4 inch clearance. Neither side seems to have any kind of spacer between cam and dog.
08-12-2011, 07:09 PM
#85
Team Owner
put the bolt in the cam and try to pull it forward the cam has an internal shoulder,
the cam may have been pushed rearwards enough to let the spider shoulder move rearwards,
as and aside try installing the cam pulley and snug the bolt see if this will pull the cam towards the front,
dont forget the Hall sensor plate
the cam may have been pushed rearwards enough to let the spider shoulder move rearwards,
as and aside try installing the cam pulley and snug the bolt see if this will pull the cam towards the front,
dont forget the Hall sensor plate
08-12-2011, 07:24 PM
#86
Rennlist Member
Thread Starter
put the bolt in the cam and try to pull it forward the cam has an internal shoulder,
the cam may have been pushed rearwards enough to let the spider shoulder move rearwards,
as and aside try installing the cam pulley and snug the bolt see if this will pull the cam towards the front,
dont forget the Hall sensor plate
the cam may have been pushed rearwards enough to let the spider shoulder move rearwards,
as and aside try installing the cam pulley and snug the bolt see if this will pull the cam towards the front,
dont forget the Hall sensor plate
I don't think installing the plate, gear and bolt would put any foward pressure on the cam. Even mounting the rotor would only snug it toward the spyder, not away from the backing plate. Right?
08-12-2011, 08:02 PM
#87
Team Owner
if the cam wont pull forward then please follow my instructions for fitting the cam pulley to the cam,
the cam should slide forward with the bolt acting as a puller,
dont force anything
NOTE the spider will contact the front cam spacer then it should compress and the cam will slide forward to its shoulder on the inside of the cam cap
the cam should slide forward with the bolt acting as a puller,
dont force anything
NOTE the spider will contact the front cam spacer then it should compress and the cam will slide forward to its shoulder on the inside of the cam cap
08-12-2011, 08:25 PM
#88
Rennlist Member
Thread Starter
Thanks Stan
With the plate, gear and shoulder washer in place, I torqued it down to 47 ft lbs.. It looks like I have a sliver of space now. Nothing compared to the 1/4 inch on the left side but hopefully sufficient.
08-12-2011, 10:21 PM
#90
Team Owner
OOPs sorry i missed that Charlie
answer is yes for a baseline count 3 teeth in front of the cam TDC marks
( this should equate to 45deg BTDC for the cams)
and then position the belt, then add some tension to the belt then turn to TDC and check for alignment, if its not correct you wount be off more than 2 teeth either way.
The right cam pulley looks correct now,
there isnt much room behind the spider on the rt cam,
the left cam will have a bit more
answer is yes for a baseline count 3 teeth in front of the cam TDC marks
( this should equate to 45deg BTDC for the cams)
and then position the belt, then add some tension to the belt then turn to TDC and check for alignment, if its not correct you wount be off more than 2 teeth either way.
The right cam pulley looks correct now,
there isnt much room behind the spider on the rt cam,
the left cam will have a bit more