Bald-faced lies??? - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Bald-faced lies???
Posted by Eiron [Email] (more from Eiron) on Tue, 17 Feb 2004 12:29:37
In Reply to: Re: What are the advantages?, jrbrangi, Tue, 17 Feb 2004 09:32:50
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Sorry to burst your bubble, but:
1) The Teflon coating is only beneficial if you decide NOT to use grease. As long as you're greasing it, you're not relying on the "solid lube" ("dry lube") properties of an anodized Teflon hardcoat. Any anodized coating (Teflon or otherwise) is nice to reduce the amount of aluminum oxidation collected in the grease, but since you're still using grease, the winter stiction will be the same for both valves. And I doubt a winter start on a dry Teflon coating will slide better than one on uncoated aluminum using grease.
2) Both valves use Viton O-rings (as compared to the "standard" buna-n rubber). Forge uses three in their just-for-Saab DVS007P valve, & I thought Strat used only two (but I could be mistaken).
3) Both valves should be serviced at regular intervals. The cleaning can be the same both (either wipe & relube, or disassemble & clean & relube), but I'd recommend starting with every oil change & working out longer based on what you find. If you truly want a 30k-40k mile part, either stick with the Bosch unit & replace it that often, or go with the Forge DVR valve. It's not a sliding piston design, so it never needs cleaning/greasing.
4) Forge does not require any part replacement.
5) Both valves use Mobil 1 grease.
In addition to these clarifications, you should also know that Forge offers an "adjustability kit" of different springs. This allows you to simply & quickly tune the valve to your engine's boost setup. Again, I could be wrong, but I don't think Strat offers this option on their standard Hyper valve.
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