[1987 300zx Turbo Problem]

it didnt but i replaced them and now the turbo is running great.

 

thanks for all the help guys.

 

Also whats the best MBC for this car at the moment. I was looking into a hallman pro with a ceramic ball for like 180

[1987 300zx Turbo Problem]

so, no vacuum reference for your wastegate as 240Zed said?

 

Also you might want to check out Z31performance dot com or other Z31 sites. They are more geared to your chassis/platform and willl most likely know more about common isues with the VG30ET.

i have no clue what the vacum lines on my turbo go to. ANy ideas

[1987 300zx Turbo Problem]

my compression is fine. the mototr runs strong its only the turbo screwing up. I have no vac lins under my turbo connected they are all missing

[1987 300zx Turbo Problem]

Can you keep your right foot off the pedal a bit until you figure out what's wrong?

 

You don't HAVE to be in boost all the time

 

Do a compression test, that will narrow it down.

Its parked in my garage until i figure out whats wrong. the only time i run it is when i test out repairs at the moment and how would i go about doing a compression test

[1987 300zx Turbo Problem]

The seals are not blown. I ran the car today with noi smoke. I am still overboosting like crazy. But i went under the car and there are 2 vaccum nipples right on the side of the turbo and they are not connected to anything

[1987 300zx Turbo Problem]

I do have an aftermarket boost gauge that shows boost to 30psi and vac to 30mmhg.

 

The car is not really running that well anymore. Lots of bluish-white smoke from the exhusat with the occasional backfire or two.

 

 

Unfortunately i do not have a boost controller. but i was looking to put in a hallman pro with an HKS BOV to stop the excessive boost.

[1987 300zx Turbo Problem]

Well the other day when i was driving i went to pass some old lady driver. So i kicked down into third and went WOT to pass her. When i hit my normal stock 7psi boost the guage went higher and higher and then my boost hit 20psi!!! The car backfired and freaked out.then when i parked on the side of the road my Vac was at 27 when it used to be at 19-20please help me