« Last post by fastcorvairs on November 11, 2019, 04:40:11 AM »
This has totally blown up over the last few years. Very humbling to attend. I am really bumed that I could not make it this year. Changing out the flag at the flag pole in the sand.
« Last post by fabr on November 07, 2019, 05:50:14 PM »
Same. NOS,N/A,boosted. Ring seal is ring seal. Low leak down is key.Just need a vac pump or enough dry sump stages to get the amount of vac desired or needed as dictated by the ring package. Loss of ring seal from detonation is what is trying to be avoided.
« Last post by fabr on November 06, 2019, 07:04:36 PM »
I'd be surprised if there was even .5 inches of vac from that. Not enough to have any effect other than pulling some vapors away.
Crankcase vac of 8-10 inches will definitely free up horsepower from increased ring seal. This is a proven fact on any engine.15 inches is about the limit on hp increases until over somewhere around 7500rpm. At that point on up hp will continue to increase until around 23 inches or so . Further hp increases are realized when a low ,low tension ring package is used . WHen using such ring packages crankcase vac is a must. I got to worrying that my 3 stage dry sump would not be able to reach enough vac and that is why I'm going to a 5 stage with vac regulation.
« Last post by dsrace on November 06, 2019, 03:54:02 PM »
so i know it's not the same thing exactly and i am not dry sumped but i do have a ccv catch can that does have a hose connected pre turbo in the air cleaner housing. there is slight vac on that ccv catch can that way. it is enough that i do not see any steam or such come out of the pod filter at the top of the catch can. no steam at idle and of course i cannot tell at speed.
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