Like the title says I am putting a Non-retro hydraulic roller cam (XR-276HR-12) into my 817 406.
The parts arn't going together as expected and I'm looking for some guidance/experience.
The timing chain I bought is for a flat tappet (for early years) and the roller cam has a smaller bolt pattern.
Looking at a lightly used cam gear I had, I was able to install it using the new chain and crank gear.
Tooth profile lined up and looked virtually the same albiet a little bit of wear.
I purchased a torrington bearing and a roller button to use on this as I know the cam will want to push forward.
The torrington makes up the space behind the gear to keep the chain straight and the lobes appear to be centered over the lifter bores.
Q1: What keeps the torrington straight to the center of the cam behind the gear?
(both gears do not have a way to keep it centered and I am bothered by this)
The button that I have "seems" to fit with the larger end fitting into the "flat tappet" gear with the small side out to the cover.
Seeing how the roller cam has a smaller center, the button will not work with the roller gear.
Q2: Is there a different button just for rollers in old blocks?
I must be missing something here, If someone has some insight it would be greatly appreciated.
TIA
The parts arn't going together as expected and I'm looking for some guidance/experience.
The timing chain I bought is for a flat tappet (for early years) and the roller cam has a smaller bolt pattern.
Looking at a lightly used cam gear I had, I was able to install it using the new chain and crank gear.
Tooth profile lined up and looked virtually the same albiet a little bit of wear.
I purchased a torrington bearing and a roller button to use on this as I know the cam will want to push forward.
The torrington makes up the space behind the gear to keep the chain straight and the lobes appear to be centered over the lifter bores.
Q1: What keeps the torrington straight to the center of the cam behind the gear?
(both gears do not have a way to keep it centered and I am bothered by this)
The button that I have "seems" to fit with the larger end fitting into the "flat tappet" gear with the small side out to the cover.
Seeing how the roller cam has a smaller center, the button will not work with the roller gear.
Q2: Is there a different button just for rollers in old blocks?
I must be missing something here, If someone has some insight it would be greatly appreciated.
TIA