The Forced Induction Crankcase Evac Thread
06-07-2017, 01:11 PM
#161
Supporting Vendor
i think is because i did not explain how my cans work compared to the rest. yes is smart idea to keep a functional pcv system on just about any vehicle.
my cans are already built to equalize crank pressure as necessary with the pressure release top. this does not change function of the can, of the 3 versions i sell, race.draft.pcv all retain their function, can be fitted to handle up to 1500hp, are available in two sizes, and with either the breather top (pressure release to atmosphere) or the recirculating top (vent out the fitting/ hose to somewhere else of your choice, for example stock airbox)
the system is not 'open' on my car it operates as a normal pcv system, but if/when more crankcase flow is created than the pcv system can absorb, it leaves the top (either one) in order to keep pressure from building.
my cans are already built to equalize crank pressure as necessary with the pressure release top. this does not change function of the can, of the 3 versions i sell, race.draft.pcv all retain their function, can be fitted to handle up to 1500hp, are available in two sizes, and with either the breather top (pressure release to atmosphere) or the recirculating top (vent out the fitting/ hose to somewhere else of your choice, for example stock airbox)
the system is not 'open' on my car it operates as a normal pcv system, but if/when more crankcase flow is created than the pcv system can absorb, it leaves the top (either one) in order to keep pressure from building.
06-08-2017, 10:09 AM
#162
Tech Contributor
David,
Thank you for taking the time to help eliminate so much of the misinformation, and help place the emphasis on the reality of the situation. I've discussed this with countless people and have always disagreed with the methods of so many snake oil salesmen. So many things in so many of the designs are not only not helpful, but cause actual issues. It's nice to see some of the smoke and mirrors removed with some hard facts acquired through legitimate, proper testing.
Thank you for taking the time to help eliminate so much of the misinformation, and help place the emphasis on the reality of the situation. I've discussed this with countless people and have always disagreed with the methods of so many snake oil salesmen. So many things in so many of the designs are not only not helpful, but cause actual issues. It's nice to see some of the smoke and mirrors removed with some hard facts acquired through legitimate, proper testing.
06-08-2017, 10:31 AM
#163
Tech Contributor
You've missed my point, and still haven't answered my inquiry. My over a week reference is under boost for nearly 200 hours on the same oil, with only a breather, and burning coal bed methane with H2S in it straight out of the earth. Only then the viscosity hit limits and acid levels overtook base. In these cars, burning pump gas, race fuel, etc. that are actually refined fuels; run time between oil changes is significantly less even if done at 3000mi. So, my inquiry remains before you start telling people that with a breather system their oil is going to be "bad" after a single outing, I would like to see some data to support this, how and where it was sampled, and what exactly is being used as a pass/fail criteria for the oil sampling.
"If you do not care for these explanations, please do as you are, but please do not disrupt this thread and confuse those that do wish to learn."
I do care for technical explanations. You made a claim to an extremely short oil life (one outing) if a breather system is utilized, i'm calling BS, and I would like to know what testing you have done to validate. What I find disruptive in threads like these are when vendors step in with explanations and an end goal to sell a product. If you have data, please post it. Not from a google search.
"If you do not care for these explanations, please do as you are, but please do not disrupt this thread and confuse those that do wish to learn."
I do care for technical explanations. You made a claim to an extremely short oil life (one outing) if a breather system is utilized, i'm calling BS, and I would like to know what testing you have done to validate. What I find disruptive in threads like these are when vendors step in with explanations and an end goal to sell a product. If you have data, please post it. Not from a google search.
06-08-2017, 01:03 PM
#164
Drifting
nothing wrong with the venturi tube. it will replace the metered vacuum of the pcv system and the fumes dont end up in the intake. all systems claiming a hp increase by creating a vacuum in the crankcase at wot are claiming a perpetum mobile situation, imho.(im just waiting for somebody to hook up a turbocharger to the crankcase.) if not concerned with emissions, just vent to atmosphere at wot. how much time does a street engine spend at wot anyway?
Last edited by romandian; 06-08-2017 at 01:05 PM.
06-08-2017, 02:16 PM
#165
Supporting Vendor
nothing wrong with the venturi tube. it will replace the metered vacuum of the pcv system and the fumes dont end up in the intake. all systems claiming a hp increase by creating a vacuum in the crankcase at wot are claiming a perpetum mobile situation, imho.(im just waiting for somebody to hook up a turbocharger to the crankcase.) if not concerned with emissions, just vent to atmosphere at wot. how much time does a street engine spend at wot anyway?
06-08-2017, 03:26 PM
#167
Supporting Vendor
there are a matrix of variables that will affect the performance, it does not always work 'like the internet says' across every engine build and exhaust combo. it can actually not work at all and cause way more harm than good given certain circumstances.
because race cars have it does not mean it is the best thing for a random corvette daily driver.
and not to give the wrong idea. on a car where the exhaust is actually measured to provide suction, i don't mind it used in conjunction with one of my draft cans, but i would NOT personally allow it to be solely in charge of my crankcase pressure.
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3470# Stock bottom end and heads Corvette Stock Bottom End Record Holder
08-08-2017, 03:42 PM
#168
Tech Contributor
Real World testing by one of the Largest and most respected lubrication lab's in the World. No smoke and mirrors, that would be David in his video only setting up 1/2 of 1/2 of the system he is comparing with. This took over 2 years and the lab results are indisputable with GDI engines: ........................................ ........................................ ........................................ ...................................
I watched your video in the GTO and while I saw the vacuum continuously going to 0, I think that more members than just me would like to see a measurement of the vacuum yield in your crankcase by the use of what you're calling the secondary vacuum source. If you feel that I'm losing sight of something important here, let me know, but it's definitely something that I'm curious about since it's being applied with your design.
Bret
09-05-2017, 10:16 PM
#169
Team Owner
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Location: cookeville tennessee
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Bret I'll tell you this buddy the big RX Catch can that the guy sells from Fl. I sent him pic & all he then told me yes the first one he had to rework it. Told me he was going to replace it & send me the new one & refund my money also for the trouble.
He never did do nothing. This Tracy here got into the pic said he would help & get it done also never did get nothing done also.
I will tell you this David at MMS Catch can really does work and also one of the best guys as a vendor in here. David thanks again for the help on the catch can set up for the c7.. Robert
He never did do nothing. This Tracy here got into the pic said he would help & get it done also never did get nothing done also.
I will tell you this David at MMS Catch can really does work and also one of the best guys as a vendor in here. David thanks again for the help on the catch can set up for the c7.. Robert
Last edited by robert miller; 09-05-2017 at 10:20 PM.
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