Turbo clocking questions
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Turbo clocking questions So I hurt my back at the beginning of October, and had a local shop handle my turbo install. I had been having issues with smoking between shifts and on decel . After installing a restrictor, the smoking was reduced to a minimum but I'm afraid the damage had already been done. Upon putting my car on my lift today, I found that the return on the turbo was clocked slightly facing away from the motor. Not a huge angle but enough for me too see. When I sit and ponder this, it makes sense that under hard acceleration , oil was pushed away from the drain towards the back of the turbo, and while shifting gears, it started to drain properly but since the feed was spraying oil the whole time, there was an over abundance of oil, and had no place to go but out the exhaust. Is this theory correct ? I'm not about to point fingers, but I just want to know if this theoretically could be the issue . I've read that a 20* angle is acceptable but wouldn't it be with the return facing back towards the motor ? I'm going to re clock straight up and down tomorrow . My drain was working just fine , as I use a scavenge pump because my return routing doesn't seem to slope at all.
just make sure the drain or feed is flat. I usually get a digital level(your phone) make sure its calibrated to see actual angle of tilt.
with that said it sounds the feed was to blame though not the angle. next time make sure you know what your pressure, so youll be able to decide if you need a restrictor or not.
if the turbo was smoking already chances are its already toast. thats why you always have to address oiling issues as soon as they happen.
with that said it sounds the feed was to blame though not the angle. next time make sure you know what your pressure, so youll be able to decide if you need a restrictor or not.
if the turbo was smoking already chances are its already toast. thats why you always have to address oiling issues as soon as they happen.
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There was tons of oil inside ,all going out the exhaust side . I don't think the restrictor had anything too do with it tbh. I may pull the restrictor tomorrow to see if it effects it in any way shape or form , but I have a ton of residual oil to burn out of my exhaust for sure . I just don't think that a turbo drain facing towards the radiator , would allow oil to leave the turbo , under hard acceleration. Drains perfect at 6 o'clock now . Just have to address the alternator bracket being off . Bought a dayco laser for my serpentine setup.
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You normally don't run into big problems until you get a ton of angle in the CHRA.
A small amount of angle is ok, I bet the bushing is leaking on the exhaust side. Might as well send it out and have it refreshed in the off season.
A small amount of angle is ok, I bet the bushing is leaking on the exhaust side. Might as well send it out and have it refreshed in the off season.
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I rebuilt it yesterday. Bought a master overhaul kit from turbonetics. Marked everything with a white paint marker , cleaned all the coked oil out of it , I'm definitely curious to see if it will stay together or not , as it's the first time I've ever done one . The thing that fought me the worst was the snap rings which hold the bushings in place , they were a nightmare to get locked back into place without damaging anything. I took it out for a ride last night , car felt good, didn't smoke at all, but I had 3 v band leaks, which were killing boost , so I plan to go through and reinstall them with copper rtv on each joint . I'm gonna remove the restrictor today as well and see if my smoke issue has gone away.
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I didn't measure it but to be honest just by gauging different angles , id say it was at least 20-30* which according to turbonetics , anything past 15* and not angled toward the motor will cause return issues
I definitely understand what you are trying to say, I guess I never thought of that point you are trying to make. With that being said, I think it would make me feel a lot better that if it was sloped away from vertical, that it would be sloped towards the rear of the car. But mine happens to be a gravity drain, so for me that is an even greater point.
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I think vertical will always be neutral. Think about where the drain location on the turbo. Clocking it means you might be creating a lower point in the drain and creating a backup.
Second yes you can set it up so it drains towards the engine when accelerating but what about stopping? Keep it simple and keep it neutral don't angle unless you have some clearance issue due to packaging/poor design
Second yes you can set it up so it drains towards the engine when accelerating but what about stopping? Keep it simple and keep it neutral don't angle unless you have some clearance issue due to packaging/poor design
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I've got it clocked perfect . I'm gonna remove the restrictor in the Morning. Exhaustion coupled with being distracted , I reassembled my waste gate, got the car all back together , and it was stuck at idle !! Couldn't figure this out for nothing , I took the wastegate back apart 3x before I realized that the fire ring had fell out of it on my bench -_-.
I've got it clocked perfect . I'm gonna remove the restrictor in the Morning. Exhaustion coupled with being distracted , I reassembled my waste gate, got the car all back together , and it was stuck at idle !! Couldn't figure this out for nothing , I took the wastegate back apart 3x before I realized that the fire ring had fell out of it on my bench -_-.
journal or bb?
did you verify the oil pressure yet?
if this is a BB you will most likely need a restrictor.
instead of guessing around buy a cheap ebay oil pressure and read your pressure at max.(personally I think you should have one anyways-just get electronic if mounting in cabin or copper line at minimum if mechanical)
If you know your pressure youll know if you need one or not(or if you need a specific size restrictor.) not all restrictor are the same size.
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So with absolutely no restrictor, I'm getting no smoke in between gears, crank case vented properly, larger diameter drain lines, plus the turbo being clocked at 12/6 . I pushed 1.5 quarts of oil through the exhaust , when the turbo let go . I've seen it smoke 3x total in a hour driving time, all 3 were coming to a stop braking hard . I'm guessing this is because of all the oil in my exhaust, rolling forward when coming to a stop and hitting hot exhaust pipe, closer too the motor . Other than that the car is running,spooling and most importantly not smoking hardly at all. Now I just need to get this eboost street dialed in correctly , as it doesn't have actual boost adjustments , rather it's based on 0-100 % duty cycle of the boost solenoid .