Crankcase Evacuation
#1
Crankcase Evacuation
I know this should go in the FI forum, but no one has any answers there.
I have a Greddy TT setup and road race my car. My crankcase deosn't have the necessary capacity to vent built up pressure. My turbo oil return lines are pressurizing and forcing alot of oil past the seals into the intercooler fowling my MAF sensor and casuing the couplers to blow off. Has anyone found an answer to relieving the pressure? A vacuum system maybe? Anything? I'm desperate.
I have a Greddy TT setup and road race my car. My crankcase deosn't have the necessary capacity to vent built up pressure. My turbo oil return lines are pressurizing and forcing alot of oil past the seals into the intercooler fowling my MAF sensor and casuing the couplers to blow off. Has anyone found an answer to relieving the pressure? A vacuum system maybe? Anything? I'm desperate.
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i was recently told by a race car shop owner that BOTH banks need to be ventilated in racing conditions, not just one. Not sure if this is true on FI, but seems to make sense. Just vent both sides and use a catch can.
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in addition to what i wrote above... i was thinking about this after I went back to work today. I have seen a lot of Cobra guys at the track with superchargers having a ton of blow by issues as well. A lot of them end up porting BOTH banks AND they will add a TON of length to the hose that leads to the catch can. Literally it will be coiled up several times before reaching the can. It may not be the prettiest way to handle the problem, but it gives the system that much more volume.
Has anyone ran a catch can for each bank? Not really weight efficiant, however.
Has anyone ran a catch can for each bank? Not really weight efficiant, however.
#11
I know this should go in the FI forum, but no one has any answers there.
I have a Greddy TT setup and road race my car. My crankcase deosn't have the necessary capacity to vent built up pressure. My turbo oil return lines are pressurizing and forcing alot of oil past the seals into the intercooler fowling my MAF sensor and casuing the couplers to blow off. Has anyone found an answer to relieving the pressure? A vacuum system maybe? Anything? I'm desperate.
I have a Greddy TT setup and road race my car. My crankcase deosn't have the necessary capacity to vent built up pressure. My turbo oil return lines are pressurizing and forcing alot of oil past the seals into the intercooler fowling my MAF sensor and casuing the couplers to blow off. Has anyone found an answer to relieving the pressure? A vacuum system maybe? Anything? I'm desperate.
If you were to get inlets cut into the suction side of the turbo inlets behinde the air filters and run this to the outlet of you catch can then when your car comes on boost you would have equal amount of vac pulling though you catch can???
#12
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I have been following your problems in the FI forum mate.
If you were to get inlets cut into the suction side of the turbo inlets behind the air filters and run this to the outlet of you catch can then when your car comes on boost you would have equal amount of vac pulling though you catch can???
If you were to get inlets cut into the suction side of the turbo inlets behind the air filters and run this to the outlet of you catch can then when your car comes on boost you would have equal amount of vac pulling though you catch can???
#13
I found where my crankcase pressure was comming from. I had two cylinders with bad rings. Cylinder #2 was 14% leakdown, and #3 was 18%. That was causing the crankcase to pressurize and pressurize the turbo oil return lines and causing the turbo oil seals to leak something fierce. Gonna have to get the rings replaced.
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the Z has decent power and great handling/braking in even the most basic form. That was the original reason I bought one. Shortly there after I moved on to a non-production race car with a chevy power plant.
don't get me wrong, however, I would kill to be TT'd. I have driven a monster of a Z and loved every second. I also understand the risk, which is why i stuck with NA.
Yes rings are definately always going to be an issue with racing along with A LOT of other componets. But why speed up the process???
just my.02
don't get me wrong, however, I would kill to be TT'd. I have driven a monster of a Z and loved every second. I also understand the risk, which is why i stuck with NA.
Yes rings are definately always going to be an issue with racing along with A LOT of other componets. But why speed up the process???
just my.02