jesusno2 Posted October 2, 2016 Report Share Posted October 2, 2016 Anyone of you guys ever had the oil drain leaking at the turbo. I dunno what the hell is going on! ! have tried everything! its just a standard T3 turbo every gasket I've tried leaks. currentley i am using a copper gasket with high temp silicon and it still freaking leaks. I even went as far as taking my flange to work and having the machine shop surface grind it to assure its perfectly flat. still leaking how much damn pressure is coming outta this thing! Quote Link to comment
G-Duax Posted October 2, 2016 Report Share Posted October 2, 2016 Probably not the gasket. Did you clean it real well, and just run long enough to see where the oil is actually coming from? Oil on a very hot surface spreads really quickly. Quote Link to comment
jesusno2 Posted October 2, 2016 Author Report Share Posted October 2, 2016 its coming from the flange Quote Link to comment
datzenmike Posted October 2, 2016 Report Share Posted October 2, 2016 The drain tube is just a tube for the oil to fall down into the sump. If it was blocked, oil pressure would build up on the drain side of the bearing where is shouldn't. Turbo's are infamous for coking oil from the heat. Maybe you have blockage? Quote Link to comment
jesusno2 Posted October 3, 2016 Author Report Share Posted October 3, 2016 Every thing is new even the engine 3/4 ID turbo drain its leaking from behind the bolt that holds the air side flange onto the housing Quote Link to comment
DISLEXICDIME Posted October 3, 2016 Report Share Posted October 3, 2016 Oil feed needs restricted Quote Link to comment
datzenmike Posted October 3, 2016 Report Share Posted October 3, 2016 Oil feed needs restricted I've heard of this also. Quote Link to comment
darrel Posted October 3, 2016 Report Share Posted October 3, 2016 just for shits n giggles. Are there two copper washers at the banjo fitting to the oil feed? Quote Link to comment
G-Duax Posted October 3, 2016 Report Share Posted October 3, 2016 Oil feed needs restricted Only modern ball bearing turbos. Quote Link to comment
DISLEXICDIME Posted October 3, 2016 Report Share Posted October 3, 2016 Only modern ball bearing turbos. Incorrect read some google Quote Link to comment
G-Duax Posted October 3, 2016 Report Share Posted October 3, 2016 News to me..... I've been importing Japanese turbos for going on 16 years now, and never once had to use a restricter on any of them. GReddy, HKS, and the big Toyota race series (CT3x size). And I've installed just about every other brand. I'll continue to use non-restricted oil feed line an any non-BB turbo. The only time someone runs into problems is when they have too small of outlet, and create enough pressure inside the turbo to push oil out past the shaft seals. If people are resticting oil in to cover up poorly designed oil drains, they are being silly..... If they are resticting oil flow because their stock pump isn't up to the job, and they have low pressure due to the oil going to their turbo, they are also being silly. Right now I am working on a new oil pump overdrive kit to cure such a problem on the MkIII Supras. People are getting tired of stupid low pressure on these engines. Quote Link to comment
DISLEXICDIME Posted October 3, 2016 Report Share Posted October 3, 2016 Usually the restrictor is Built in to the feed line on a factory journal turbo. Look at the original banjo bolt for his turbo it's a restrictor. Many factory turbos have a restrictor he'll even my t25 on my sr has one even though it only drops pressure 10 psi Quote Link to comment
datzenmike Posted October 3, 2016 Report Share Posted October 3, 2016 Just get the oil pump from a KA24E in the S13 NOT the later KA24DE. Or any D-21 KA24E or DE pumps. The internal rotors are 13% longer and while the max pressure is the same the pump puts out more volume and lower speeds and this means higher pressure than a stock L series pump at the same RPM. My tired L20B had a hot idle pressure of 17 PSI. With no other change but a KA pump it jumped to 29PSI at hot idle. Quote Link to comment
jesusno2 Posted October 4, 2016 Author Report Share Posted October 4, 2016 I cant use a single cam pump on a DE dual cams are driven right off the crank. Brand new engine i have about 80 psi cold off about 1200 rpm and around 60 psi hot around 1200 rpm. I did buy a restrictor for it with a .065 hole gonna play with that see if it works. I dont think the drain is the problem its. 3/4 id all the way to the pan the only spot that is smaller is the hole in the adaper at the turbo that is 11/16 diameter. Quote Link to comment
datzenmike Posted October 4, 2016 Report Share Posted October 4, 2016 Car DEs are crank driven. D-21 Hardbody KA24DEs are the same as the KA24Es and are external like the L and Z series engines. Quote Link to comment
Jester Posted October 16, 2016 Report Share Posted October 16, 2016 I love the feed line in this picture! BUT, the return scares me. Is the brass fitting going straight into the turbo or is there a plate/flange that it screws into? Being a fresh engine, are the crank case pressures high enough to keep the oil from draining? I wouldn't think so, but.....how does the DE crank vent? Quote Link to comment
Datfish Posted October 16, 2016 Report Share Posted October 16, 2016 its leaking from behind the bolt that holds the air side flange onto the housing I'm not clear what you are describing....Is the drain flange leaking or is it coming from the compressor housing (cold side)? Possible to include any pics of the area? Quote Link to comment
Stoffregen Motorsports Posted October 22, 2016 Report Share Posted October 22, 2016 I'm confused. Are the pics of the car in question? Quote Link to comment
jesusno2 Posted October 22, 2016 Author Report Share Posted October 22, 2016 I think the turbo is cracked somewhere so i bought a nee one. Quote Link to comment
datzenmike Posted October 23, 2016 Report Share Posted October 23, 2016 I have a 300zx turbo I'm looking at. There isn't a lot of difference between the oil feed and the oil drain ports.... could they be reversed? Would this even matter? Quote Link to comment
jesusno2 Posted October 23, 2016 Author Report Share Posted October 23, 2016 Drain is square feed is round 1 Quote Link to comment
G-Duax Posted October 23, 2016 Report Share Posted October 23, 2016 I think the turbo is cracked somewhere so i bought a nee one. In all the turbos I've handled, never seen a cartridge crack. Why can't you post pictures of said turbo, close up, out of the car ? Can't use silicone on a turbo drain. Too hot, and not oil resistant enough. And push-lock hose (the type of hose that bottom brass fitting is for) also can't take the heat. 1 Quote Link to comment
That4doorKiD Posted October 24, 2016 Report Share Posted October 24, 2016 All that double checking and still leaking from that flange? Doubt it tho... One of the hot side or outlet bolts are stripped, maybe loose. The turbo leaks oil from the two huge O-rings on each side also. How often have you taken apart or clocked your compressor Quote Link to comment
jesusno2 Posted October 24, 2016 Author Report Share Posted October 24, 2016 It isnt leaking from the flange its pushing oil out one bolt which leads me to think it was cracked somewhere either way its a non issue as i said shit canning this turbo cause i bought a brand new one Quote Link to comment
Stoffregen Motorsports Posted October 25, 2016 Report Share Posted October 25, 2016 Have you said what size your oil feed line is? Any larger than -4 and it's probably getting too much oil. Quote Link to comment
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