Jump to content
SAU Community

Recommended Posts

What happened was I blew the front ceramic wheel so I got another turbo replaced it then I rebuilt the first engine put it all back together and only making half boost so I assumed one turbo was working and the other was stuffed only found one wheel in exhaust the cat looked stuffed do I sold the engine pulled the turbos dropped new engine checked the wheels on both turbos they both spun free didn't look like blades where missing put it all back together and now no boost at all if the cat was blocked it would be quiet wouldn't it the only thing I've done is pulled intercooler to inspect and put it all back together a totally blocked cat wouldn't the exhaust glow red

Edited by Hot33r8723
  • Replies 56
  • Created
  • Last Reply

Top Posters In This Topic

What happened was I blew the front ceramic wheel so I got another turbo replaced it then I rebuilt the first engine put it all back together and only making half boost so I assumed one turbo was working and the other was stuffed

it doesn't work like that - if one turbo is seized or has lost its turbine, then its compressor effectively makes a hole to atmosphere that the boost from the good turbo will flow out of.

Half boost is a boost control issue.

Just pulled of the pods and intAke pipe on the front turbo and started the car and it's not spinning do u think I lost a wheel if a engines compression was really low on all cylinders would it make boost still

Won't build any boost there is no vacum to wastegates at all there is vacum on my boost gauge

I dont understand how that can be - dont they both connect to the plenum? No vac to wastegates suggests a leak, and if you have a leak you wont make boost.

I dont understand how that can be - dont they both connect to the plenum? No vac to wastegates suggests a leak, and if you have a leak you wont make boost.

No. Wastegates get their signal from compressor outlet, not plenum. Plenum bad, compressor outlet good.

No. Wastegates get their signal from compressor outlet, not plenum. Plenum bad, compressor outlet good.

Given that they're connected - how much difference does it make? (assuming the intercooler flows well)

Any ideas on how OP gets nothing at actuators but vac at boost gauge? I would have assumed they would be pretty much the same at idle.

Guess what I reckon it is a blocked cat

If the cat is blocked, I highly doubt the car would even run. Try starting your car with a tennis ball in the back with duct tape.

ive seen a car drive perfectly ok with a blocked cat, but there was zero boost..

why would you need vacumn at the turbo actuator, it only needs to open under pressure, so what we have here are 2 turbo's which are supposedly ok... and highly likely a blocked shit cat. and zero boost.

If both turbo's flow there air/pressure into the intake, then you could test each turbo individually to check if they are making proper boost..that would save stripping it all down again..?? and replace cat obviously..

Edited by SliverS2

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • I thought I'd come back and add something I JUST learned. A Toyota LandCruiser with a 1HZ, mates perfectly with a bottle of Nulon brake fluid. As in, it perfectly screws in. Great make shift funnel when you cut the bottom of it off. This may work for your Corolla.   Unfortunately, tipping a 10L drum is much harder than a 4 to 6L bottle, and they no longer include the easy pour tap which was just perfection to use previously.  
    • Guys since i bought r33 gts25t coupe 1994 automatic a/t(manual swap 350z gearbox)  all i got is problems, always problems. Lets start with that when i turn key into ignition(ON) fuel pump doesnt always works. Sometimes i have to turn key twice Off/on/off/on until it primes. Its new, dw300 - 340lph. My gearbox broke so i did gearbox swap, install different intake manifold, injectors and i take pipes. Car was sitting in garage for more than half a year. I did assembly all not that long ago and when i turn ignition cant hear prime. All of sudden it stopped working. Theres many videos on YouTube how to make relay mod on r33 straight from battery so i did and it doesnt work! 😰 30 - battery positive  87 - positive from fuel pump to relay 85, 86 - one of two wires from original fuel pump wires(light blue, grey) and it didn’t work. so I check on ignition and took original BLUE relays wires from trunk, next to fuses. (I believe it’s IGN+ and ECU pin 18. it didn’t work…  tried connecting (IGN+ from og relay) and (ECU 104 from 1of4 FPCM wires) to my new relay 85/86 and it didn’t work.  I unplug FPCM. Didn’t work. im thinking what’s wrong   fuel pump is working, if I leave IGN+ on 85 and 86 straight to ground it works but it’s just nonstop. Since it getting constant 12v after key in ON. light blue wire gives me 6-8v.  so how this should be connected? What causing ECU not giving — on pin? Or I did sth wrong and that’s why it doesn’t work? I need negative signal on ECU that control fuel pump. What this should be?
    • You can use your VIN to look up the factory part number somewhere like amayama, and then look to order new if necessary. https://www.amayama.com/en/genuine-catalogs/nissan Depending on price you might want to rebuild instead. @GTSBoy I had an interesting insight into US market parts when the Titan rear calipers were sticking. New calipers were dirt cheap, about 20% more than a rebuild kit....they are just considered throw away maintenance items
    • Funny, but really not funny. Thank god (most) f the world has moved on since then
    • Lots of votes for driving onto a plank first; that is the quickest way I've found, 25mm is enough for my case but that will vary by car It also depends where you are going for. On the 32 I can get to the rear diff with my floor jack if I do that end first, and get it up on stands. Then I lift the front from either front tow hook as high as needed, also onto stands. Sometimes I need a small lift on the other tow hook to get it level enough If I do the front first I can't get to the rear diff because of the angle of the car Other options are getting to the front mount of the rear subframe from in front of the wheel (if only lifting one side, or just do both which is a bit of a pain compared to one lift from the diff), or also the gearbox cross member mount on the driver's side if you are  just trying to lift the driver's side. I This is the jack I use; it says 75mm clearance but of course that is only on the lower section so if you have to reach too far in like the diff you still get stuck. https://www.snapon-bluepoint.com.sg/category/Floor-Jacks/product/Floor-Jack,-2-Ton-Low-Profile
×
×
  • Create New...