Tubular 1.8L SS manifolds on ebay
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Joined: May 2005
Posts: 80,552
Total Cats: 4,368
From: Chantilly, VA
Otherwise under boost there should be the same pressure on each side of the BOV piston (same surface area). The spring (with very light preload) on top keeps the piston down and the BOV shut.
I run my old style FM piston BOV with very little spring preload and it doesn't leak and vents when it should (basically almost all the time when not under boost). OK enough on my theory of BOV function.
Nice price for what you get; the photos are of the more expensive stainless version.
I would sell my stuff on eBay (or here) more officially IF I knew it fit with accessories and I had a DP jig. Maybe once I get in the new house and have time/space for that sort of thing.
As a data point, if you advertised more officially I might have gone to you for a kit instead of bell since you're semi-local. If I had to do it again I definitely would have inquired as to your prices, it probably would have saved me some headache and time, and maybe money, but who knows? I guess as you seem to be doing custom work that it would hard to pin down a price for a kit though.
A tube for the external WG would be so easy to mount on the back side of that manifold, it would also be easy to dump or recirc the WG into the downpipe at that location. I like it.
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StratoBlue1109
Miata parts for sale/trade
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Sep 30, 2018 01:09 PM







