hello guys im the guy from panama city panama .. im having a huge problem ending my boost project .. turbo is smoking .. dont know why .. the turbo is fine no shaft play or anything .. one question where do you guys put your oil drain line .. i have mine in the oil pan ,.. is that a good place ? pics would be appreciated
thanks
There is a couple threads on this already. Most people have been going to the pan. Id look into how your venting your crank case preasure. There is a write up. I think its called Boosted pvc system or something along those lines, its got a ton of usefull info in there. Here is where I have tapped mine, im not up and running yet though.
"Straight roads are for fast cars, turns are for fast drivers"-Colin McRae
thats exactly where i have it
is there anybody else about that pvc thing ?
thanks
sure its not the oil seal on the turbo putting oil in the intake
JBO since July 30, 2001
my drain line is like 1/8 .. is it, too small ?
Way to small,should be about 1/2" or bigger. There is no pressure on the draining oil,it's just gravity feed back to the pan. That's your problem,your building to much pressure on your oil seal in the turbo from the feed line and getting oil in your exhaust stream.
Also,do you have a restrictor in your feed line to cut down the pressure going into turbo? You want to cut the pressure down dependent on what style bearings you have in the turbo (ballbearing or needle)...
Edited 2 time(s). Last edited Friday, December 04, 2009 5:23 AM
"The FACTS are always subject to CHANGE once the TRUTH is applied"
"In the entire history of man the only stupid questions are the ones that don't get asked"
^^ what pressures would be ideal for journal bearing (20g)?
ECOtec DOHC
thank you guys for the advices .. i went to one local store and change that drain line to a 5/8 one .. and problem resolved .. ill post some videos as soon as i get the car cleaned
for a journal bearing turbo a safe oil feed line orifice restriction of 0.060" (thousanths of an inch) should be fine. i use this restriction on all my builds and ive han no issues. if its a roller bearing type turbo then a 0.030" orifice restriction would be safe.
1/8 drain line may be small but with a restricted oil feed line it may work. before you waste your time changing your oil drain line put a restrictor on the oil feed side. they should be all over ebay for different turbo application.
if you have an oil feeding fitting thats steel, a cheap way of doing it is welding it shut and then using a drill bit that has a thickness of 0.060" to drill it out.
i have a mitsu turbo and it said no restriction is needed or recommended can't remember not running yet but you have me thinking this over.
JOE L wrote:for a journal bearing turbo a safe oil feed line orifice restriction of 0.060" (thousanths of an inch) should be fine. i use this restriction on all my builds and ive han no issues. if its a roller bearing type turbo then a 0.030" orifice restriction would be safe.
1/8 drain line may be small but with a restricted oil feed line it may work. before you waste your time changing your oil drain line put a restrictor on the oil feed side. they should be all over ebay for different turbo application.
if you have an oil feeding fitting thats steel, a cheap way of doing it is welding it shut and then using a drill bit that has a thickness of 0.060" to drill it out.
An inexpensive place to buy a restrictors is at mcmaster-carr - they have them listed under "orifices" You can pick up whatever you need with male/male NPT threads.
One more thing to add ---> in your picture, it appears that the axle shaft is rubbing on the return line. you may want to try some alternative routing there.
