TR4nut
Yoda
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Got my 3A engine back from the machine shop after some balance work, and after cleaning the block up I attempted my first install of the cam bearings. I think this topic came up a while back so I thought I'd share some photos.
First step in this is join a club, then step two is make friends with one of the guys in the club that has an install tool similar to this one:
Just threaded rod, with some nicely turned aluminum mandrels that work all the magic.
Here's a shot of how the tool fits into the front cam bearing location:
The other end of the tool is used to pull the bearing into position:
And here is a shot with the bearing pulled in - the tool is sized just right that it also pulls the bearing out. The install procedure usually takes several tries to get alignment perfect so the removal is just part of the process.
Bearings were installed rear to front. The rear one went in with one try, the small middle one four tries, and the last one about eight before I finally figured it out. The rear bearing has 3 holes that are critical - the middle and front only 2. The front was tricky in that I picked the wrong 2 holes in the bearing to use to match up to the engine. If anyone else does this, its the oval hole and the small hole. A small mirror was invaluable to check fit, as well as a probe which in my case was a small allen wrench to make sure the holes were open:
Other the making sure oil holes are open, it is very important to make sure that the set screw fits in the bearing properly, otherwise you run the risk of distorting the bearing when you install the screw. I checked each bearing by threading in the screw and made sure it didn't bind - you can just see the screw poking into the bearing slot in this photo. This also shows why you better install the copper washer with the screw, otherwise the screw is long enough to foul the cam:
Other that being a little tedious, it was actually fun because the tool worked perfectly. I think I owe my friend a breakfast for letting me borrow it.
Off for some business in Calgary this week, then back to the install!
First step in this is join a club, then step two is make friends with one of the guys in the club that has an install tool similar to this one:
Just threaded rod, with some nicely turned aluminum mandrels that work all the magic.
Here's a shot of how the tool fits into the front cam bearing location:
The other end of the tool is used to pull the bearing into position:
And here is a shot with the bearing pulled in - the tool is sized just right that it also pulls the bearing out. The install procedure usually takes several tries to get alignment perfect so the removal is just part of the process.
Bearings were installed rear to front. The rear one went in with one try, the small middle one four tries, and the last one about eight before I finally figured it out. The rear bearing has 3 holes that are critical - the middle and front only 2. The front was tricky in that I picked the wrong 2 holes in the bearing to use to match up to the engine. If anyone else does this, its the oval hole and the small hole. A small mirror was invaluable to check fit, as well as a probe which in my case was a small allen wrench to make sure the holes were open:
Other the making sure oil holes are open, it is very important to make sure that the set screw fits in the bearing properly, otherwise you run the risk of distorting the bearing when you install the screw. I checked each bearing by threading in the screw and made sure it didn't bind - you can just see the screw poking into the bearing slot in this photo. This also shows why you better install the copper washer with the screw, otherwise the screw is long enough to foul the cam:
Other that being a little tedious, it was actually fun because the tool worked perfectly. I think I owe my friend a breakfast for letting me borrow it.
Off for some business in Calgary this week, then back to the install!