Thread: 5th blown turbo!!! UPDATES w/last post.

Ok I dont want my hand held threw this process.

I have blown up 5 t28 Garrett turbochargers. My fault 300% as to why the turbos have failed. Ok so we now Know why the turbos dont work with my setup. Ill get to that in a second. First I want to tell you a little about the car and why its eating Turbos left and right! I have not drove the car 4,000 miles in the 8 moths Ive owned the car. Ok you all know this car very good I'd say. I didnt know anything about a damn SR20 motor at all. I love the motor and platforms they come in. The car I own is in the members rides if you dont know what I drive. Ill say it now its a 93 Nx2000. OK now to the problems I am having with the turbo setup.

Setup:
SR20DE-T (less than40-45l on rebuild)
240 FWD exhaust manifold. (love it)
T2871R turbo SHOT!!! NO GOOD now. got 300 miles out of it but a DAMN good 300 fun miles.
Custom 3inch down pipe
Custom built 3in exhaust in Ohio
3inch resaprator
MagaFlow muffler (idk what one) but I love the sound of the exhaust in this car.
Fx500 4puck
01 G20t Tranny
z32 maf (i think) how do i find this out??? answer now if you know please!

basically my simple setup I want to run 10psi on.
So heres what I think IS wrong with my setup now and why its ate 5 turbos in probably the 340 mile range. I have not drove the car since yesterdays 300 mile trips around my neighborhood. The guages all read right. ill post those readings below. The whole reason the car ate 5 turbos was the oil feed, return and the oil gauge line ran from the oil line was broken on the back side under my itb setup. Thats embarrsing to me cause I didnt do that and I wouldnt have put the gauge on with plastic tubing?? its a copper tube now.

The gauge readings:
fuel pressure:50 psi
vacuum:17-20psi
oil pressure: @ idle 0-12 psi
afrs: 14.7 around idle and all over the place from 12.2 to 15.5 so i know thats wrong. cause the turbos are shot.

so now I am thinking that the car is ready to get another turbo installed to the DE-T
What do you guys think? give me one more last hand. Its me and the sr community. Or go back to the N/A guys! (no hard feelings)
Should I put the !8g I said In the first place on the car since I have the oil pressure running right and i have NOSMOKE what so ever coming from the car!


I look foward to all the help. its much thanked!!!!




IF also you want PICTURES TO help YOU see WHY the car is EATING turbos ILL provide those ALSO.

What oil are you using?

If its a z32 maf look at the part number. You should see is say N62 on there.

Something is definitely up. Are the turbos starved for oil and don't build boost or are you blowing out the oil seals? Are you sure your gauge is good? 0-12psi sounds super low at idle.

mobile one full sysn 10w 30 wieght. never seen above 40-40psi

yes sir Im pretty sure I have the gauge hooked up right now. it IS T'ed off my oil line to my t28. I see it rise when the rpms go up to about 30 with low revs in neutral. with car running its at 40-50 psi depending on how much throttle im giving it.
the maf is a N60 (I think its raining very hard here today) but ill link you to a page:

http://www.sr20-forum.com/members-rides/58867-c-laws-93-nx2k-18g-help-gettin-oil-feed-line-anyone-4.html

look at the Nathan user names post. in his signature is the old mods list. at the 1st page of my thread there is a kinda updated list he had made out i kind of had added/subtracted to. maybe that can help you help me if you dont mind to look for me at the links etc.???

you have oil supply problem possibly too much silicone in around oil pan during reseal and has clogged up your pick up. When doing the rebuild o-ring is missing on pump to block side causing poor pressure. Collapsed oil feed line, which has failed interally. I have seen some aftermarket non oem nissan pump/ front cover units fail or provide poor pressure from the start.
you say garrett units, are you purchasing from reputable seller ? used ?

yes last one i bought was the t28 brand spanking new in box brom garrett

thats also what the evo and sti guys around my area (ahhhh im the damn only sr20de-t running here) they say it could be blocked but I dont know I didnt do the rebuild on the motor.)
Im about to the point to where I go N/A cause the car runs fine but I dont think the oil pressure is a problem now. but thats me. its either mess up number 6 turbo and then im out the turbo game.
then ill go n/a and enjoy the car. lol.

I honestly would get rid of the T in the oil feed line. I never trusted those. I would feel better knowning my turbo was getting 100% oil without the possibility of a leak somewhere in between. Find a Nisport oil adapter which threads into the factory oil housing unit and lets you run various ports for oil feed.

If its the N60, you have an older Maxima MAF which is not a Z32 maf. It will limit you to around 325whp.

As Nismo_star said, it seems you might have an oil supply issue. It really doesn't take much to toast a turbo. Who did the engine rebuild? I would pop off the lower oil pan and take off the (2) 12mm bolts holding on the oil pick up. It could possibly have crap lodged in there. Also see if the gasket is there in between the pump/pick up.

I would go through the whole oil system before bolting on a new turbo. I know pulling the pump with the motor in the car is damn near impossible but I would pull it off and make sure everything is 100% before blowing up another snail.

I will def do that. I agree its not worth killing my snails with salt over the wrong oil supply.
I agree with you totally about the t"s in the oil feed to my snails. I dont trust it either.
but i can say it hasnt toasted my 18g yet. it has absolutly no shafy play whats so ever. I never really had the correct oil feed line connected to the 18g lol i was using the t28 line and it leaked some but very slowly but it was a slow steady leak. so I may just may trust the T in the oil feed to the turbo this one shot! if not ill go threw most of the lower pan. but the oil in the car was as damn black as the text on the screen lol.

so the n60 maf is basically something i should sell later on after I get the setup running right?

any advice helps with my build. this is my first ever build and i was so scared I hate to say it I pissed off Keo and LYnch. but I hope they forgive me. im new to the game lol.

Reading is key man. This forum has so much info for those willing to learn. The next way is by hands on experience. Without doing it, you will never know. Just make sure read up on what you are doing and take your time doing it. I learned first hand do it right the first time. I blew 4 turbo's on my GTI-R motor due to those shitty ITB's. I would rather run that K's racing manifold on ebay over that. I'm surprised you're pulling good vacuum.

Keep your eye on oil level man. You are risking more than just the turbo with an oil leak. Keep in mind they need proper lubrication spinning at like 150,000rpm. I would buy a new oil line kit and try a different oil pressure gauge. On my DE's I would see at least 60-65psi in the upper revs. ~15-25psi at idle. If you are still seeing 0-12psi I would not run it.