Look two replies up, I have the HPT file there. If it's still giving you fits, shoot me an email I can send it to directly if you're ok with that? Thanks
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Look two replies up, I have the HPT file there. If it's still giving you fits, shoot me an email I can send it to directly if you're ok with that? Thanks
IMG_3270.jpgIMG_3271.jpgIMG_3273.jpgIMG_3274.jpg
Forgot to mention, The dry sump has vacuum drawn from the CAI, and I'm running the MM restrictor to the SC to limit vacuum, so it doesn't pull air in the front main seal. It's a common problem with the 2650s on the Gen V LT cars apparently. But mine definitely had the issue.
Do you not have a valley port?
Normally, it's valley port to catch can, then catch can to behind TB in the SC. Then valve cover to intake pipe post MAF in the airflow measuring process. I honestly don't remember if the dry sump setups have the valley, but the way you have it, it's pulling "hard" vacuum on the crankcase with not really much of a chance of fresh air to go in other than the filter and orifice on the MM catch can - this is why you were hearing the whistle. This is also a roundabout vacuum leak.... When plumbed right, you shouldn't have super high vacuum on the crankcase as that can actually get into the territory of starving splash lube items.
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
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If it's making the seal whistle there's no crankcase air "in". Simple as that. It's drawing vacuum on the crankcase. It's pulling air past the seal. That's what makes it whistle.
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Maybe I didn't clarify my statement, but yes, I had too much vacuum being pulled by the 2650 plumbed exactly the way the mighty mouse instructions wanted it and was getting the intermittent squeal only at idle. That's why MM makes the restrictor for the bigger superchargers between the 10AN wild catch can and the SC just behind the TB. I no longer have the squeal since adding the restrictor last fall. But I am concerned about the fresh air supply to the engine. Kaizenspeed had me kill the valley vent to the SC snout after the TB, and plumb each valve cover to the catch can to improve vacuum at idle to keep the BOV fully open. I additionally have the passenger side valve cover plumbed to the drysump tank the way it was stock, and the dry sump has a line that goes to the CAI that should be the fresh air side of the system.LT4 Dry Sump flow.jpg