Here's Steve's URL again.
http://www.sunbeamalpine.org/racing/Web_pages%20for%20Sports%20Car%20Forum/Engine20%Rockers.html
Looks like the back end got clipped off.
Steven Silverstein wrote:
>
> I am finally back from classes.
>
> Below is a close up photo polished rockers and there is a substantial amount
> of material removed. These wereon the car when I bought it. Actually, I
> should say, "with the car".I haven't measured the weight differences between
> a regular rocker and one of the polished rockers but If I can find the extra
> loose polished one I will and post the results.
>
> I also have Isky pushrods, shortened lifters, and aluminum retainers which
> in combination must make a significant difference in overall moving valve
> train weight. Ironically, they (when it was raced in the 60's) limited the
> car to 6000/6300 rpm.
>
> The machine shop that I have worked with really recommends against the
> aluminum retainers. The other option is to cut off the lower portion of the
> retainer where the "O-ring" seal is located. Then use Perfect Circle seals.
> I have found a few of this style retainer, too. I will have to weight the
> differences between aluminum, steel cut down, and stock. I don't know how
> much difference this all makes unless you are running higher rpms.
>
> I guess the devil is in the details. I am sure it all added up to increase
> longevity (stress relief of the rockers) and did remove some valve train
> weight.
>
> http://www.sunbeamalpine.org/racing/Web%20pages%20for%20Sports%20Car%20Forum
> /Engine%20Rockers.html
>
> Steven Silverstein
--
Ian Spencer <www.sunbeamalpine.org>
'61 Series II Alpine B9104704 LRX
'61 Harrington Alpine B9104782 OD HRO
'62 Harrington Le Mans BH9115930 OD LRX
'62 Harrington Le Mans BH9116754 OD LRX
'62 Harrington Le Mans BH9117497 OD LRX
'64 Series IV Automatic B9401426 BW LRX
'67 Series V Alpine B395016967 LRX
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