Any Advantage to Rocker Spacers? Options

[vesnyder]

Any advantage to the aluminum rocker spacers in lieu of the stock springs? For the price (~$20) seems like a no brainer if there is any advantage at all?

[Jake Raby]

I use them on every engine for several reasons.

1- Added lift or duration can easily overwork the stock springs that are between the rockers, if this happens there is nothing to keep the rocker from sliding off the valve stem and contacting the retainer. If the retainer is contacted chances are pretty good that the keepers will pop off and you'll lose a valve into the chamber- this can be catastrophic failure.

2-The other reason is valve train noise, solid spacers will keep valve trains quieter (at least mine do) because they take the clatter out of the arrangement due to fitting tighter.

3- They boost oil delivery to the valve guides and adjusters because they provide a means of resistance between the rockers that boosts the pressure inside the rockers forcing the oil up to the adjuster end, keeping valves springs and guides better lubricated.

There are many other reasons, these are just a few of my favorites. Very much worth the 16 bucks we charge for them.