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Post by beatrod on Mar 6, 2022 19:44:49 GMT -5
Ok, so i have an 84 svo motor in an 89 mustang shell. I have a top/center mount header. Custom oil return line out of stainless braided/rubber core hose with AN fittings (both of which iv replaced and am quite sure arent the culprit) to route it around the header instead of through it. Has drop although its not a ton but should certainly be enough. Replaced the oil return line flange gasket. Today replaced the valve cover gasket with a rubber one. Fuctory t3 turbo (could be a seal issue but it doesnt seem to be the sorce of the "spray"). The feed line is the factory feed straightened a bit and added on to using a union and some brake line and doesnt have any oil on it or dripping as does really nothing above the top of the head/valve cover mateing face. I think thats sufficient information for the question. So i have a MAJOR oil leak. But only under boost. Can sit and run for however long and nothing bad happens. Can sit and rev it to 3-4000 and hold and nothing bad happens. I go down the road a few driveways and back and make whatever the base wastegate holds(cant remember if its ten or eight), and the ENTIRE passenger side of the motor is covered in oil. Alot of oil. Gets on the firewall a bit. K member. Frame. Inside wheel. EEVERYWHERE! but only on the passenger side. Not much by the front of motor and non inside crank pully to make me think its front main seal. Not much at all on bottom of turbo hot or cold side although most would be burned off but would atleast be discolored from it and possibly still on there from the amount that it is and not a long drive at all! To my understanding, the oil pressure port and return ports are on the driver side of the head leading to not beleive its head gasket. Plus it starts up within one crank. Doesnt run bad at all. Stays in open loop until i turn key back and then on again real fast but thats a different problem.. With all of this taken into consideration, iv been leaning heavily to that its the oil pan gasket mixed with the fact i havnt fixed the PCV system yet(although there doesnt seem to be much out the breather tube or being burned or the dipstick as its not pushed up and nothing is on the driver side). Either way i have to pull the motor out, so any other problems will be alot more seeable.. But i was wondering off hand if the pan gasket is a problem every now and then or if there may be something else i should be looking towards. Im pulling the motor either way after a few days and i get an engine hoist, but it would be very helpful to get any advice on things to consider taking a special look at once its out from another mind. Mine could be clouded with the anger of things. Thank you tremendously to whoever my reply in advance!
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Post by Stinger on Mar 7, 2022 11:40:31 GMT -5
Oil pan gasket leaks should just drip on the ground, not spray anywhere. Is it possible it's coming from the oil fill cap?
You may have to clean it up and do a very quick blip in boost and then immediately check under the hood for the beginnings of a leak (before it sprays everywhere) to identify where it is located.
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Post by beatrod on Mar 7, 2022 16:42:06 GMT -5
Thought of that as well just havnt done it yet. I found out about it when i did a burnout to start the year😂 was thinking of taking hood off and having a friend watch as i do it again.. But there doesnt seem to be any on the top of anything either except down low like the motor mount. On the engine, everything is COVERED from the header down although its alot heavier the lower you look. On the body or engine bay rather, theres just some spackling here and there but nothing of anything more than small droplets above the frame rail. The underside of the frame gets hit and maybe asmall bit on the engine side of it but thats it(enough to form drips off the frame rail). Hits the firewall low like around the trans tunnel by the frame. Nothing in front of motor (radiator and such) has much but again small droplets here and there. Starter is covered! Side of engine is covered! K member, all that. But nothing on bottom or top of turbo, header, hood, frame up, intercooler piping, driver side... Its wild man😂 i cant figure it out yet. Are there oil galarys over there that may have somehow cracked this winter?? I had an antifreeze water mix in it that im thinking should have been fine but maybe not.. I always drain little more than half out in winter and leave radiator open to help with expansion in case it does get cold enough.. Im in ohio though and i dont even remember if it got bellow 0 this year. Its got me stumped for now! i have a hoist on its way but that wont be for a few more days. If i could find a fix before i pull it, thatd be great! And thank you stinger! You seem to be about the only person who replys lol i try to look the newer ones ovwr thinking i may know their problem but rarely do..
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Post by beatrod on Mar 7, 2022 17:05:34 GMT -5
I mean does any of the bolts have a thin enough barrier wall so to speak to break through some how.. Or maybe a crack somewhere into the crankcase for whatever wild reason thats not letting anything out until pressure builds.. Honestly anything to look at at this point lol
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Post by Stinger on Mar 7, 2022 23:43:28 GMT -5
Certainly sounds like it's pressurized where ever it's coming from which should eliminate some things (oil return line, oil cap, etc.). Since it's not on top of the turbo, that should eliminate the oil feed line (unless it's got a gash in it that sprays down but that should leak at idle).
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Post by beatrod on Mar 8, 2022 5:39:17 GMT -5
I dont get it.. Going to take to car wash and wash off that side of motor real good then put on jack stands and see if i cant brake boost a bit while a buddy watches. Il add what i find! Thanks stinger!
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Post by turbochallenged on Mar 8, 2022 8:20:22 GMT -5
I don't know if the 84 SVO motors had an oil level sensor in the oil pan. If it did, that might be something to look at.
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Post by beatrod on Mar 8, 2022 18:17:02 GMT -5
Im not sure of other models but the svo doesnt.. Atleast not this one.. Im kind of curious how the pcv valve in the hose right by the distributor works.. Is it like a check valve that only lets crank case pressure out but not in? Thatd be the only thing that makes sense in my mind.. Not so sure even just the low 8-10 psi would go well.. Maybe if that valve got stuck open or just blow the diaphram all the way out.. I wonder if that pressure plus an old pan gasket might be enough to let it "spray" a bit.. Im stuck on the pan gasket because the motor isnt the cleanest from road grime and just some years of use.. But that whole side of where the pan meets the block is rather clean. Only in a small strip like its had some grime on it but was kind of washed away with the oil as it comes out with force.. Idk. Got the lift, now to try to see while brake boosting on blocks and probably pull the motor either way.
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Post by Stinger on Mar 8, 2022 21:25:18 GMT -5
Yes, the PCV is a one way valve.
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Post by beatrod on Mar 9, 2022 19:07:02 GMT -5
Alright im thinking i have her figured out.. Tried to sit there and brake boost with car on blocks a bit. Didnt go to well, wasnt wanting to boost any but im thinking that was because maybe i was holding brakes to hard or whatever it was.. Idk il figure it out later.. But while doing so, it was letting a fair amount of oil out of the return line that if multiplied by enough crank case pressure or even just a bit higher rpm or tons of aspects, that its most likely the culprit. Seems the reason it was all over the block and everything else was because the motion because the block has absolutely no more that what i couldnt get sprayed off real quick with an air nozzle.. Im thinkng the rubber core line must have a split or just dry rotted or whatever the problem may be.. So il fix that, actually wash it real good, and see if its fixed. With that, id like to not use another rubber core line and go through this again.. But im still iffy on the whole going through the header bit like the line you guys have does.. Im sure you wouldnt sell it if it was a problem child but im still concerned with the head the header gives off "melting" the hose.. Because i assume theres SOMEKIND of rubber core in it... how big of a deal is it to run them through the header?? Does it "bake" the oil more or need a turbo timer or let the oil cool before i shut it off?? Its a toy more or less, but i would like for it to be a reliable one!
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Post by Stinger on Mar 9, 2022 20:45:34 GMT -5
Our line is not a rubber core. It's PTFE that's rated to hold 3000psi at 450 degrees continuous. Only time I've ever seen one melt was when it was physically touching the header for a long time. Proper routing doesn't touch the header.
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Post by beatrod on Mar 9, 2022 22:00:16 GMT -5
Well that sounds fine to me! On my way to spend money😂
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Post by beatrod on Mar 10, 2022 5:25:02 GMT -5
If i may ask though stinger.. When i got the drivetrain, guy gave an XS Power header with it. Thats whats on it. Would you happen to know if the same length hose works as should as compared with your header? And if not, which one should i be getting? They are built about the same it seems but i dont know of exacts..
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Post by Stinger on Mar 10, 2022 12:10:11 GMT -5
Yes, it would be the same return line.
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Post by beatrod on Mar 10, 2022 18:11:20 GMT -5
Stinger i had two of the return lines in my basket at check out and only needed the one and the metal t3 gasket. I did the return product but want to make you aware of it so i hopfully dont get charged for two when i only need one.
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