Cam Sprocket Removal Help
#1
Three Wheelin'
Thread Starter
Cam Sprocket Removal Help
Hi All,
I have all the front of the engine dismantled and want to get the cam sprockets re-coated. Anything I should know or tricks to remove and replace them in the right spot? The engine is at 45d.
Cheers
Scott
I have all the front of the engine dismantled and want to get the cam sprockets re-coated. Anything I should know or tricks to remove and replace them in the right spot? The engine is at 45d.
Cheers
Scott
#2
Team Owner
Use a 30mm wrench to hold the washer under the 17 mm bolt,
the gear should slide off, if not heat it with a heat gun.
NOTE dont pry on the edges of the pulley it can bend the pulley or snap the cam.
use a gear puller if necessary.
If you are prying then pry at opposite edges evenly, extreme prying pressure will damage the parts.
If using a puller get a cap screw and insert it into the snout of the cam make sure the head fits inside the pulley you dont want to press the puller bolt tip into the cam as it can spread the nose.
Use a Porken 32 valver cam alignment tool to adjust that cam pulleys when refitting.
the gear should slide off, if not heat it with a heat gun.
NOTE dont pry on the edges of the pulley it can bend the pulley or snap the cam.
use a gear puller if necessary.
If you are prying then pry at opposite edges evenly, extreme prying pressure will damage the parts.
If using a puller get a cap screw and insert it into the snout of the cam make sure the head fits inside the pulley you dont want to press the puller bolt tip into the cam as it can spread the nose.
Use a Porken 32 valver cam alignment tool to adjust that cam pulleys when refitting.
#3
Vegas, Baby!
Rennlist Member
Rennlist Member
Before you remove the gear, take a pencil, and mark the area where the cap screws hold the gear to the end of the cam shafts. This makes getting the gear back in position very close. It's what I did, when I did my TB/WP.
#4
Chronic Tool Dropper
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Take a picture of each gear, including the drive hub bolthole locations, before you remove the gears. This will get you to a usable range of timing when you reassemble.
The workshop manual offers a detailed procedure for setting cam timing. Cam covers are off, dial indicator on a fixture, and a degree wheel or tape on the harmonic balancer. There's a spiffy tool offered in the US called a "Porken 32VR" that makes the cam timing about as simple and easy as it might ever be. Search a few threads here for pictures of it in use. See if someone in AU has one you can borrow, or you can buy them from premier parts supplier Roger at 928SRUS.
The workshop manual offers a detailed procedure for setting cam timing. Cam covers are off, dial indicator on a fixture, and a degree wheel or tape on the harmonic balancer. There's a spiffy tool offered in the US called a "Porken 32VR" that makes the cam timing about as simple and easy as it might ever be. Search a few threads here for pictures of it in use. See if someone in AU has one you can borrow, or you can buy them from premier parts supplier Roger at 928SRUS.
#5
Team Owner
FWIW removal of the cam gears will change the alignment the only for sure way to position them is to use the WSM method or the 32 valver tool and I suggest to use your old belt to set the cams the new belt will wear into the old belt dimension