Post by dickie on Jul 13, 2019 20:16:14 GMT
I have saved enough dosh to purchase an ATI Damper which arrived last week.
I have read a few horror stories about installation.
So this is how I did it, ( block is a 1800 MK2.5 / Mk2 Head / ITB's fitted into a Mk1 1800 No timing belt covers to get in the way )
The engine is installed so I had to have a think !! ( living in Cornwall I put both my heads together )
First I set the engine to TDC then fitted a camshaft lock which fits between the camshaft pulleys
Removed water pump and power steering belts.
I put the engine in 3rd gear then unwound the damper bolt without any drama.
I detached the Oem damper from the timing belt bottom pulley, once this was free I slackened the timing belt tensioner lifted the belt away from the idler pulley and tensioner pulley, then removed the crankshaft timing belt pulley, a little tweek with a tyre lever was all it needed.
I put the key to one side and offered up the ATI damper to work out what else I had to move.
I had to drop the anti roll bar and drop the AC pipes a little bit to get everything to line up ( I did not remove the radiator or drain the coolant )
Next job was clean the crank nose with a bit of 360 grit wet and dry lubricated with your favourite spray lube.
I then did the same to the inside of the ATI damper to ensure that is was clean and smooth.
I then checked the fit of the key into the damper.
Then out came the digital callipers to check the interference. ( I decided that it was fine to proceed )
I used a smear of copperslip on the crank nose, key and bore of the damper.
I refitted the key to the crankshaft making sure that its was only half way into its groove.
I used heavy grease on the shoulder of the crankbolt and light oil on the thread.
I then started to fit the ATI damper making sure that the key was lined up, I put the bolt in finger tight to hold things in position then placed the timing belt onto the new damper and over the idler and tension pulleys ( this was to stop the crankshaft from moving in relation to the camshafts )
I then started to wind the new damper on using a very old bronze ratchet with a flat handle ( flat handle passes the fan motor )
I managed to wind the pulley on just over half way with the ratchet handle ( I adjusted the timing belt into position and tensioned it as the damper went into place )
Once I could not move the damper with the ratchet out came the 600mm breaker bar to do the rest ( I could only do it up 2 flats at a time with this bar )
Progress was slow and steady with no jam ups, once it bottomed out it was time for the torque wrench to finish off.
Last job was to re set the cambelt position to the correct alignment and re tension, once that was done I rocked the crank pulley back and forward to take the tension of the camshaft pulley lock.
I can now refit the AC pipes and anti roll bar.
I will have to get a shorter water pump belt as the ATI damper has an underdrive pulley to slow the water pump down to allow the increase in revs.
When I refer to cam belt position I mean its position front to back as when I started to fit the ATI damper the belt was forward and only half way onto the idler and tensioner.
Total time taken as described above is around four hours. ( and I still have all the skin on my knuckles )
I have read a few horror stories about installation.
So this is how I did it, ( block is a 1800 MK2.5 / Mk2 Head / ITB's fitted into a Mk1 1800 No timing belt covers to get in the way )
The engine is installed so I had to have a think !! ( living in Cornwall I put both my heads together )
First I set the engine to TDC then fitted a camshaft lock which fits between the camshaft pulleys
Removed water pump and power steering belts.
I put the engine in 3rd gear then unwound the damper bolt without any drama.
I detached the Oem damper from the timing belt bottom pulley, once this was free I slackened the timing belt tensioner lifted the belt away from the idler pulley and tensioner pulley, then removed the crankshaft timing belt pulley, a little tweek with a tyre lever was all it needed.
I put the key to one side and offered up the ATI damper to work out what else I had to move.
I had to drop the anti roll bar and drop the AC pipes a little bit to get everything to line up ( I did not remove the radiator or drain the coolant )
Next job was clean the crank nose with a bit of 360 grit wet and dry lubricated with your favourite spray lube.
I then did the same to the inside of the ATI damper to ensure that is was clean and smooth.
I then checked the fit of the key into the damper.
Then out came the digital callipers to check the interference. ( I decided that it was fine to proceed )
I used a smear of copperslip on the crank nose, key and bore of the damper.
I refitted the key to the crankshaft making sure that its was only half way into its groove.
I used heavy grease on the shoulder of the crankbolt and light oil on the thread.
I then started to fit the ATI damper making sure that the key was lined up, I put the bolt in finger tight to hold things in position then placed the timing belt onto the new damper and over the idler and tension pulleys ( this was to stop the crankshaft from moving in relation to the camshafts )
I then started to wind the new damper on using a very old bronze ratchet with a flat handle ( flat handle passes the fan motor )
I managed to wind the pulley on just over half way with the ratchet handle ( I adjusted the timing belt into position and tensioned it as the damper went into place )
Once I could not move the damper with the ratchet out came the 600mm breaker bar to do the rest ( I could only do it up 2 flats at a time with this bar )
Progress was slow and steady with no jam ups, once it bottomed out it was time for the torque wrench to finish off.
Last job was to re set the cambelt position to the correct alignment and re tension, once that was done I rocked the crank pulley back and forward to take the tension of the camshaft pulley lock.
I can now refit the AC pipes and anti roll bar.
I will have to get a shorter water pump belt as the ATI damper has an underdrive pulley to slow the water pump down to allow the increase in revs.
When I refer to cam belt position I mean its position front to back as when I started to fit the ATI damper the belt was forward and only half way onto the idler and tensioner.
Total time taken as described above is around four hours. ( and I still have all the skin on my knuckles )