Steve cam buttons are not used for longevity but rather timing accuracy, and
that leads to less stress on the engine and thus longevity.
>Anybody for the Mondello cam button?
> The cam button is a piece of bakelite about 1/2 in. dia. approx 1/2"
>long with a shoulder that allows it to be held in place by the camshaft
>bolt retaining plate. It prevents the camshaft from walking forward
>during acceleration or load. I've seen them made out of two pieces of
>steel with a torrington bearing between them too. (Fancy, expensive &
>overkill) The $2 bakelite button lasts a little longer than forever
>though so those are what I use. It contacts the inside of the timing
>chain cover so fitment is an important part of the assembly process.
>Install the camshaft, timing chaing gasket & then the cover. Use grease
>or a small amount of silly putty or clay to determine the clearance
>between the cover & tip of the button, sand it down for clearance. A
>few thousandths clearance is all that's necessary. Remember too that
>the factory never used these & somehow the engines seemed to go a long
>way in spite of it.
>HTH
>Steve Ferguson
>San Diego
>
>
>
that leads to less stress on the engine and thus longevity.
>Anybody for the Mondello cam button?
> The cam button is a piece of bakelite about 1/2 in. dia. approx 1/2"
>long with a shoulder that allows it to be held in place by the camshaft
>bolt retaining plate. It prevents the camshaft from walking forward
>during acceleration or load. I've seen them made out of two pieces of
>steel with a torrington bearing between them too. (Fancy, expensive &
>overkill) The $2 bakelite button lasts a little longer than forever
>though so those are what I use. It contacts the inside of the timing
>chain cover so fitment is an important part of the assembly process.
>Install the camshaft, timing chaing gasket & then the cover. Use grease
>or a small amount of silly putty or clay to determine the clearance
>between the cover & tip of the button, sand it down for clearance. A
>few thousandths clearance is all that's necessary. Remember too that
>the factory never used these & somehow the engines seemed to go a long
>way in spite of it.
>HTH
>Steve Ferguson
>San Diego
>
>
>
