Thread: Quirky turbo issues

Alright, I was polite, you came out with guns blazing...

what do the plugs look like?

are the injectors new? if they were used, were they cleaned and tested before you used them?

what is the turbo brand and size?

when running a jwt with draw thru maf.

you will wanna run maf atleast 18" from back of maf turbo inlet.

also you will deff wanna recirc it.

as far as the prob you are havin give us some more detail on what the car actually feels like.

have you driven it on the road or just idle and revving?

Plugs were black and the arc point was white. They have miles on them I will supply a picture.

Injectors were new in box from FRS motorsports

Turbo is a garret T28R off a s14 made in Japan.


I believe the maf is 18 inches away I know that I have to recirculate, I know it's the correct way I just wanted to try the motor out and was going to do the recirc in time.

I believe I have solved and found the problem why the turbo was blowing oil.
I realized after running the motor, that the oil dipstick had popped out of its spot. We all know that this is not good news (positive crank pressure)
It then dawned on me that the vacuum lines that come off the valve cover and the throttlebody I had plumbed into the charge pipe going into the intake. In Whila naturally aspirated motor uses this as vacuum however I made the mistake of plumbing in stock location or so forgetting that it turns into pressure.
I realized after reading the 'crankcase ventilation explained' (thanks shout out to Ben Fenner) that I need to plumb those lines between the maf and the turbo inlet where vacuum occurs.
I will correct this issue and hope that it resolves a majority of the oil problems, I am now grateful I built this in steps so I can take such steps back and correct things, it happens when people get excited.

This is further more confirmed because the oil dipstick never popped off when I ran the motor with the turbo (plumbed with oil and coolant) it just didn't have the charge pipes hooked up, and my far was in front of the turbo and it was not blowing oil.

As for feel I have not been able to run it long because of the oil problems. At most 2-4 minutes. However it resulted in a decent idle, and Revving that hesitates at 3k RPM. However if I continued to blip the throttle it would rev past 3k rpm all the way to 6 it sounds strong
The wideband reads 13-15 when revving it, I need to take my time and let it warm up, slow rev it and see what happens with the wideband but at idle it contined to read lean.

It might be a day or two but I will resolve the issue (vacuum) and get back to you guys with a video! Thank you for your patience all ideas are welcome, especially when it's constructive critism backs with ideas and positive thoughts for improvement.

-Josh

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He didn't mention he had a wideband hooked up but if you read is post thoroughly and you know anything about widebands ,
U could tell he was talking about testing his wideband.

Everyone should be here to work things out on there builds not cause drama.

So keep your shitty comments to yourself. If you don't have anything productive to help the man, then don bother posting.


As far as not being able to rev over 3k that sounds like a Maf prob to me. Ive had that prob if the Maf was not in the correct range.

Have had the same problem when I forgot to bead roll the I/C piping and it blew apart.

thanks for the input guys. I was thinking it could be the maf. I tested it and it checked out. and I used maf cleaner on it. so 18 inches or less?

The more the merrier. If you can do 18+ inches you should be good.

Whoa, slow it down there tiger... must've had a bad day. He was testing the Wideband o2 sensor just like AEM says to do