Hi
I reckon that would probably have been in context of an argument against
port polishing to a mirror finish - the head guy I know laughs at people who
spend hours polishing ports almost to a mirror finish - apparently
small-scale surface roughness is a good thing for the reasons you say, but
obviously big burrs, sharp edges etc. are bad.
Cheers,
Neil
> -----Original Message-----
> From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net]On
> Behalf Of Richard Seaton
> Sent: Thursday, August 15, 2002 01:49
> To: ds55427@aol.com; vance.navarrette@intel.com; Web_disscusion List
> Subject: Re: PI Cam
>
>
> I'm not to sure about this but someone once told me that the
> inside of the
> intakes needed to be rough to create turbulence for a better air
> fuel mixture.
> I could be totally wrong on this, so please correct me if I am,
> but you might
> want to check with an knowledgeable person on this.
>
> Richard
> 69 in the works.
>
> ----- Original Message -----
> From: ds55427@aol.com
> Sent: Wednesday, August 14, 2002 3:27 PM
> To: vance.navarrette@intel.com; 6pack@autox.team.net
> Subject: Re: PI Cam
>
> Very good My friend, I will be checking into the GP2 With Rich a little
> dipper tonight.
>
> There is currently a GP3 grind in place, that will come out real soon,
> because of displaced set screw, that did not receive its dose of
> lock tite.
>
> Compression is currently 9.33 with some first class head porting,
> and larger
> valves of its older brothers.
> I asked for 9.25, so I am hoping not to have to mill much more off when we
> replace cam.
> Its currently holding DCOEs with long tube headers, that I have
> become very
> good at dialing in.
> But, never the less will becoming off this winter, and replaced with it re
> polished and balanced original intake, minus its water pluming, and SUs.
> The interior of those cast intakes is horrible, mine had the look of a
> concrete joint.
>
> Also thinking about the 1.55 Roller Rocker setup.
>
>
> This letter just came in the E box from Rich.............Placing
> the screw at
> the other end may be a little better if it falls
> out but it would still drop the pressure drastically in the entire shaft.
> The original rocker shaft has the oil outlet holes at the bottom of the
> shaft with a flat spot ground to distribute the oil across the rocker.
> Valve spring pressure holds the rocker up against the shaft making it
> difficult for much oil to get around the shaft and out the hole in the
> top of the rocker. Oil can escape out along the shaft on the side away
> from the pedestal. The original oil feed to the rocker assembly is metered
> by the groove in the rear journal of the cam. To feed more oil volume
> and pressure we like to install an external oil line from the oil
> pressure gallery to the bolt on the rear of the head feeding in to the
> rocker assembly.
>
> My roller rockers have needle bearings at the shaft and at the roller.
> The oil outlet holes in the shaft are in the top of the shaft so the
> needles on the bottom have full contact on the shaft. Oil flows between
> and around the ends of the needles to lubricate all the needles. A nylon
> washer seals between the shaft and rocker to keep oil from escaping on
> the side away from the pedestal. Oil flows around the end of the bearing
> on the pedestal side and through channels to the roller tip and push rod
> cup. This oiling system allows oil to flow much more freely than the
> original setup and may, in some cases eliminate the need for the
> external oil line.
>
>
> Oh yes, the fun, and fine line of smooth / power.
> Don
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