Rich,
Have you also considered high tech coatings on the valve springs to control
heat build up and oil retention? I'm familiar with what HPC coatings do on
valve springs and I'm sure there are others available to help with heat
build up and lubrication problems. For long runs on the salt those coatings
could be part of a solution. You can contact Jeff Holm at HPC West,
801-501-8315 and see what he says about it. They also have a facility in
Oklahoma City that does a lot of NASCAR engine work. You could call there
for tech information too.
Wes
on 2/7/04 6:19 AM, John Beckett at saltracer@servusa.com wrote:
> Rich
>
> Restrictors limit and control oil to the rockers. The spray bar is designed
> to put oil in a specific location on a specific part (the valve springs) The
> cooling effect is very important to longer life of the valve spring in
> engines with very aggressive cams, very heavy springs and very high RPM's
> (500 miles at Charlotte, Atlanta, etc. sort of thing). If your running a
> 6,500 RPM 392 Chrysler, I wouldn't think its necessary. On a 9,000 RPM small
> block running 5 miles at Bonneville it's probably a good idea.
>
> I run in the 8,000 RPM range with a mildly aggressive cam and no spray bars
> and the springs still last a season or more.
>
> JB
> ----- Original Message -----
> From: "Dave Dahlgren" <ddahlgren@snet.net>
> To: "Richard Kensicki" <richk@spartajunction.com>
> Cc: "List Land Speed" <land-speed@autox.team.net>
> Sent: Saturday, February 07, 2004 6:58 AM
> Subject: RE: Oil restrictors in a SBC, help
>
>
>> It depends on the springs and cam lift / lobe profile.
>> If it were very aggressive i would say yes it is not a bad idea.
>> Dave
>>
>>> -----Original Message-----
>>> From: Richard Kensicki [mailto:richk@spartajunction.com]
>>> Sent: Friday, February 06, 2004 10:07 PM
>>> To: Dave Dahlgren
>>> Cc: List Land Speed
>>> Subject: Re: Oil restrictors in a SBC, help
>>>
>>> Using a restrictor and a valve train spray seems counter productive at
>>> first glance. Thinking about it you do have better oil control with the
>>> spray bar. How fast is the spring heat build up? Is it an issue for a
>>> motor built for speed runs?
>>>
>>> RichK
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