One problem after another!! (Cam install)
09-13-2006, 10:07 PM
#1
Staging Lane
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One problem after another!! (Cam install) So first off I took my car to a reputable car shop. He pretty much butcher the first cam as hard as that is to do. then he replaced a cam bearing and didnt get it pressed good so it went spinning off into the block. So finally the motor is out of the car and at a machine shop. there the guy assembled it with new cam bearing, cam, and retainer. hes says the motor wont turn over when the cam retainer bolts are tightened but it does when they are loose. It is the G5x3 cam. Does anyone know what could be the problem? Are there any torque specs for the cam retainer? If everyone is lost dont bother to telling me. I cannot come up with an explaination and neither can them.
the cars been down fo 4 months any input would be appreciated
thanks Corey
the cars been down fo 4 months any input would be appreciated
thanks Corey
09-13-2006, 10:32 PM
#2
TECH Senior Member
2 things that have emmerged over the years with cam retainer plate:
1> unnusual wear on cam retainer due to a design flaw in system (poor oiling). Vinci has a cure on his site.
2> The core of the cam where the retainer is resting (lip) is not to proper tolerance. Distance between retainer and bearing lobe is too small. There used to be a pic floating around but I can't find it to show you.
To see what I mean, put the stock cam upright and rest the retainer plate on it. Measure the distance between plate and first bearing lobe.
The aftermarket cam should have the same. Some cores are ground to wrong spec.
And yes there are trq specs for cam retainer (there is trq specs for every bolt in motor, some more crutial than others).
For retainer bolts it is 18 lb/ft.
1> unnusual wear on cam retainer due to a design flaw in system (poor oiling). Vinci has a cure on his site.
2> The core of the cam where the retainer is resting (lip) is not to proper tolerance. Distance between retainer and bearing lobe is too small. There used to be a pic floating around but I can't find it to show you.
To see what I mean, put the stock cam upright and rest the retainer plate on it. Measure the distance between plate and first bearing lobe.
The aftermarket cam should have the same. Some cores are ground to wrong spec.
And yes there are trq specs for cam retainer (there is trq specs for every bolt in motor, some more crutial than others).
For retainer bolts it is 18 lb/ft.
09-14-2006, 04:38 PM
#3
Originally Posted by camSSaro
So first off I took my car to a reputable car shop. He pretty much butcher the first cam as hard as that is to do. then he replaced a cam bearing and didnt get it pressed good so it went spinning off into the block. So finally the motor is out of the car and at a machine shop. there the guy assembled it with new cam bearing, cam, and retainer. hes says the motor wont turn over when the cam retainer bolts are tightened but it does when they are loose. It is the G5x3 cam. Does anyone know what could be the problem? Are there any torque specs for the cam retainer? If everyone is lost dont bother to telling me. I cannot come up with an explaination and neither can them.
the cars been down fo 4 months any input would be appreciated
thanks Corey
the cars been down fo 4 months any input would be appreciated
thanks Corey
09-14-2006, 05:31 PM
#5
Originally Posted by camSSaro
So first off I took my car to a reputable car shop. He pretty much butcher the first cam as hard as that is to do. then he replaced a cam bearing and didnt get it pressed good so it went spinning off into the block. So finally the motor is out of the car and at a machine shop. there the guy assembled it with new cam bearing, cam, and retainer. hes says the motor wont turn over when the cam retainer bolts are tightened but it does when they are loose. It is the G5x3 cam. Does anyone know what could be the problem? Are there any torque specs for the cam retainer? If everyone is lost dont bother to telling me. I cannot come up with an explaination and neither can them.
the cars been down fo 4 months any input would be appreciated
thanks Corey
the cars been down fo 4 months any input would be appreciated
thanks Corey
09-14-2006, 06:07 PM
#6
TECH Addict
I don't think it's one problem after another - it's one problem - the people working on your car don't know what they are doing.
Take your engine and your car to someone who does.....it is not going to get better from what I see with these guys doing the work.
Take your engine and your car to someone who does.....it is not going to get better from what I see with these guys doing the work.
09-14-2006, 06:48 PM
#7
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is there any end play in the cam with the retainer plate on, if not then somthing is wrong with your cam, and as far as the cam bearing coming out they are numbered and they are diff sizes so they go is a specific spot plus the holes not lining up.
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09-14-2006, 07:08 PM
#8
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Originally Posted by speedyss
is there any end play in the cam with the retainer plate on, if not then somthing is wrong with your cam, and as far as the cam bearing coming out they are numbered and they are diff sizes so they go is a specific spot plus the holes not lining up.
09-15-2006, 03:40 PM
#10
Staging Lane
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the main bolts to my knowledge werent touched. as far as the retainer bolts go I pretty sure they were labeled correctly and should have been put in the right holes. but then again you guys have an understanding what I am dealing with. Thanks for your replies. I will relay the information
09-15-2006, 06:45 PM
#11
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Well things actually turned out great. to find out he was using the first ruined cam and not the new one. The cam step on the first cam was too big causing it to snug up against the cam sprocket when tightened. the new one is in and the cam is turning over smoother than ever. has anyone ever recieve a cam from comp that wasnt ground to specs? there is sufficient mplay. Im really excited to get the motor back in the car!!
09-16-2006, 04:13 AM
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Originally Posted by ROB55
the bolts this guy is useing in the cam plate are to long they will hit the crank.use shorter bolts
09-18-2006, 05:31 PM
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Originally Posted by MiaSSmaro98
wats vinci cure?
09-18-2006, 05:40 PM
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Originally Posted by speedyss
is there any end play in the cam with the retainer plate on, if not then somthing is wrong with your cam, and as far as the cam bearing coming out they are numbered and they are diff sizes so they go is a specific spot plus the holes not lining up.
