NEW 930 tensioner install questions

[confused]

Anyone have much experience with new in the box 930 tensioners? The latest version. I have installed a pair of these into a 73 911S engine the other day. Timed the cams with solid tensioners and then installed the new tensioners with the typical aluminum saftey collar. After a few minutes the new tensioners would squeeze down and rest on their collars. I do not remember this happening on used tensioners I have re-installed in the past.

Do you need to do anything to prepare the new tensioner as it comes out of the box. I know it is recomended for the pressure fed tensioners to be soaked in oil when the pins are released. Do you have to pump up the spring loaded tensioners as well? Relieve pressure on the bleeder nut to remove air bubbles? Squeezing down a tensioner with a channel lock or vise is very difficult as fast pressue is applied, but slow pressure gives the tensioner more movement/less resistance over time.

The pictures below show the tensioners as I installed them and the again a few minutes after they have settled. There seems to be a clearance issue and no room for the collars. I know new chains can sometimes be tight and I am using the race quality chains. Anyone have any thoughts?






I am also using Supertecs cool idler arm upgrade.

[Flat6pac]

A lot of time there is very little room for the collars but you need room under the collars.
Bruce

[confused]

You are right, there should be room under them. The little spacer block that came with the collars fit upon initial installation. Then they squeezed down and no clearance at all. If I were to raise the collar as it sits then it will be at the very top of the shaft.

[Flat6pac]

well, when they warm, the chain will stretch and the piston will raise to support the chain..that is what its suposed to do. As it is, its not in a working state, not running.
Bruce