Official Turbo LSJ thread!!!
i probably have about 350ml of oil in my catch can from the last few months. I need to clean it out but I still think it sucking the oil out of the crank case. I need more venting that is for sure, one way or the other.
I get about a quarter sized oil drop under my car everyday after several pulls coming from the bov area. Its not leaking a ton. My oil looks clean and is full, its just annoying to blow smoke after you pulled hard on someone in your car club and they are like, "dude why is your car smoking".
that Hahn manifold is a piece of junk. get a saab lk9
Last edited by BLAZIN07SS; Jul 7, 2013 at 09:29 PM. Reason: Automerged Doublepost
i have had two major issues with my build since I got this thing over 400whp. The hahn manifold was the cause of a 2 month long boost leak search that didnt turn up until i pulled it off the car. This time it was the first thing I checked before I bought another boost controller. I have already wasted 40 bucks on welding it up, now I think its going to go in the trash unless someone comes up with a better use for it.
in other news, i have never had to drain my breather tank. i always just get a light film of oil near the breather filter. nothing a little carb cleaner doesn't clean though 
yeah, i knew it was going to be problematic just never figured so soon. I had a racecar builder fix this thing up, extra heavy welds. Its just that the plate is so thin that it flexed under boost and under vacuum and after just a week of 24 psi pulls its leaking boost like a sieve... MAN I AM SO sick of this car, right now. Time to take a break from it for a while.
At the power I am making I am pretty sure the saab mani is going to hold me back. TTR made like 20whp on their manifold over the LNF unit. Taking a 20 horsepower hit after I come this far... I cant do that. I may buy a TTR manifold.
Who all is running an open crank case system. I am blowing oil out the turbo seals on deceleration. My current oil catch can is pulling air out of the crank case all the way through 27 psi but when I get off the accelerator the pressures in the crank case are causing oil to vac out of the crank case and burn as bluish sometimes white smoke, I think. There is oil on my boost controller, blow off valve, and I get a white bluish puff of smoke on decel only. This leads me to believe its a PCV issue. I can see oil in my PCV setup passing the catch can and getting into the turbo on the intake side.
I rebuilt the turbo so I know the seals are perfect. I have searched other sites and found a guy in the same boat after a rebuild. Before I speculate that my turbo is messed up. It never does this below 15 psi, there is no smoke any other time in any of my runs, and my cyl pressures are 200 across all four cylinders.
I have read its OK, no biggie you have to expect some oil on big psi turbos, to its crank case pressures, to the worst of scenarios.
I rebuilt the turbo so I know the seals are perfect. I have searched other sites and found a guy in the same boat after a rebuild. Before I speculate that my turbo is messed up. It never does this below 15 psi, there is no smoke any other time in any of my runs, and my cyl pressures are 200 across all four cylinders.
I have read its OK, no biggie you have to expect some oil on big psi turbos, to its crank case pressures, to the worst of scenarios.
i probably have about 350ml of oil in my catch can from the last few months. I need to clean it out but I still think it sucking the oil out of the crank case. I need more venting that is for sure, one way or the other.
I get about a quarter sized oil drop under my car everyday after several pulls coming from the bov area. Its not leaking a ton. My oil looks clean and is full, its just annoying to blow smoke after you pulled hard on someone in your car club and they are like, "dude why is your car smoking".
I get about a quarter sized oil drop under my car everyday after several pulls coming from the bov area. Its not leaking a ton. My oil looks clean and is full, its just annoying to blow smoke after you pulled hard on someone in your car club and they are like, "dude why is your car smoking".
saab and lnf to different manifolds
Thanks for the info MRB. I paid attention the last time we had all these conversations way back but I didnt follow through. It has now caught up with me and will be next after I fix my manifold issues once again. I am going to come up with a couple of -12 AN over the steel plate on the back of the valve cover.
yeah, i am not trash talking it, its a solid piece, can be had cheap and they are easy to modify to fit the LSJ. Its just that the 20g needs all the help it can get.