Turbo seems to be bogging out...could be wrong..please help. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

TurboNinja · 07-31-2008, 01:38 PM

I have been noticing me turbo not wanting to kick in as efficiently lately.Seem to have to really mat it to get up to speed.Now mind you this is the first high performance vehicle I have ever owned.I do not have a boost controler as of yet, and my boost is egaging to 5psi.I will be getting this soon but Im far too cheap to do this sooner that later.Also from what I have noted myh oil level has been over filled since my sr20 motor was installed, wondering if this may cause this concern and/or what should I be watching out for.

SoSideways · 07-31-2008, 01:59 PM

Sounds like an exhaust leak pre-turbo.

Sileighty_85 · 07-31-2008, 02:04 PM

5 psi is not shit thats why your car feels slow when you up up it to 10+ psi you will notice a huge differnce.

TurboNinja · 07-31-2008, 02:09 PM

Thats what Ive been thing all along, but when I frist brought it up to my shop when it was a hell of allot worse they replaced the maf and sent me on my way.For a while there it ran awesome!

TurboNinja · 07-31-2008, 02:10 PM

Quote:

Originally Posted by Sileighty_85

5 psi is not shit thats why your car feels slow when you up up it to 10+ psi you will notice a huge differnce.

Is it true that these motors can handle 15 psi?

Sileighty_85 · 07-31-2008, 02:15 PM

Quote:

Originally Posted by TurboNinja

Is it true that these motors can handle 15 psi?

These "Engines" can handle 20+ depnding on how to build it
SR20's can handle up to 500hp on stock bottom end internals
But it requires a metal H/G

SoSideways · 07-31-2008, 02:15 PM

Quote:

Originally Posted by TurboNinja

Is it true that these motors can handle 15 psi?

...................

The stock T25 is supposed to run at ____ psi.

Most people turn them up to ____ psi max, because of these reasons:

1) __________
2) __________
3) __________

Now please do your homework and do a little searching on this site and come up with the answers. I guarantee you, you will learn a lot as you look into those things.

TurboNinja · 07-31-2008, 02:17 PM

Do you have any tips or suggestions as far as the best boost controler to use?

Sileighty_85 · 07-31-2008, 02:18 PM

Quote:

Originally Posted by TurboNinja

Do you have any tips or suggestions as far as the best boost controler to use?

Adjustable ones

This will tell you everything you will need to know

http://zilvia.net/f/search.php

There are countless threads on this site that ppl have asked and reviewed on

I know you posted a thread a few days ago on this same subject and ppl flamed on you for not using the search system.

Zilvia is a great place were more than happy to help you out but you gotta meet us over half way.

This question has been asked so many times, thats why ppl get pissed cuz were tired of answering the same questions everyday.

That is why we have a Sticky'd FAQ so we dont have to repeat ourselves. http://zilvia.net/f/engine-tech/62607-sr20det-faq.html

Study other ppls problem threads and build thread information and you will learn alot about what products are good.

TurboNinja · 07-31-2008, 02:56 PM

What is with this place....you can ask a question without being shit on.

DDSR240 · 07-31-2008, 03:02 PM

Quote:

Originally Posted by SoSideways

...................

The stock T25 is supposed to run at ____ psi.

Most people turn them up to ____ psi max, because of these reasons:

1) __________
2) __________
3) __________

Now please do your homework and do a little searching on this site and come up with the answers. I guarantee you, you will learn a lot as you look into those things.

14
16
Too much greed.
Lack of knowledge.
Too cheap to upgrade the t25.........."Survey say's"?????????

Z33dori · 07-31-2008, 03:15 PM

Quote:

Originally Posted by SoSideways

...................

The stock T25 is supposed to run at ____ psi.

Most people turn them up to ____ psi max, because of these reasons:

1) __________
2) __________
3) __________

Now please do your homework and do a little searching on this site and come up with the answers. I guarantee you, you will learn a lot as you look into those things.

just a tip.....dont run it past 18psi

def stay away from 20......

and make sure your wastegate doesn't suck

Sileighty_85 · 07-31-2008, 03:21 PM

Quote:

Originally Posted by TurboNinja

What is with this place....you can ask a question without being shit on.

I just explained why.

Plus be happy you still only have 1 Red square.

SoSideways · 07-31-2008, 04:03 PM

Quote:

Originally Posted by Sileighty_85

I just explained why.

Plus be happy you still only have 1 Red square.

Too late.

There's now 2.

240driftin[Sil80] · 07-31-2008, 04:11 PM

Quote:

Originally Posted by TurboNinja

What is with this place....you can ask a question without being shit on.

for real man, i feel ya. im sick of this shit. ask a simple question like lsd vs vlsd and then people like have heart attacks or sumthing, saying bs like o u shudnt even be drifting, noob all this bs. its like rather then spend ur tie jus talkin shit on hte internet like a lame ass person, why dont u jus simply answer the question. o and my main problem is they say o u dumbfuck search it. its like wtf? thats wat im doing. asking drivers their personal knowledge.

singlecamslam · 07-31-2008, 04:30 PM

Quote:

Originally Posted by 240driftin[Sil80]

for real man, i feel ya. im sick of this shit. ask a simple question like lsd vs vlsd and then people like have heart attacks or sumthing, saying bs like o u shudnt even be drifting, noob all this bs. its like rather then spend ur tie jus talkin shit on hte internet like a lame ass person, why dont u jus simply answer the question. o and my main problem is they say o u dumbfuck search it. its like wtf? thats wat im doing. asking drivers their personal knowledge.

When you ask a question such as lsd and vlsd you're lucky someone didnt slap you in the face. Here's a few suggestions: 1 learn how to spell and talk properly 2 please use the search function, this site has a very nice and easy to use search engine, it even lists the different types of threads. Lastly stop crying. No one wants to take time to answer the same question 500000000000 times, have a nice day.

Edit: To the OP, t25 are f'ing garbage. Dont boost it more than 12 is what i would recomend. Get a t28 and a nice tune and your car will hump you.

SoSideways · 07-31-2008, 04:38 PM

Quote:

Originally Posted by 240driftin[Sil80]

for real man, i feel ya. im sick of this shit. ask a simple question like lsd vs vlsd and then people like have heart attacks or sumthing, saying bs like o u shudnt even be drifting, noob all this bs. its like rather then spend ur tie jus talkin shit on hte internet like a lame ass person, why dont u jus simply answer the question. o and my main problem is they say o u dumbfuck search it. its like wtf? thats wat im doing. asking drivers their personal knowledge.

Holy fuck my text box is now full of red squiggly lines from improper English.

Instead of typing a n00b ass question like a lame ass person, why don't you do us all a favor and USE THE FUCKING SEARCH FUNCTION AND ANSWER YOUR OWN DAMN QUESTION?

About a billion n00bs have asked the same n00b ass questions before you, so what makes you think your n00b ass question will have a different answer than the same billion answers to the billions of n00b questions that you just asked?

Honestly, so many of you fucking n00b kids come on here and want people to spoon feed you information instead of doing some leg work and looking for the answers yourselves, sometimes I wonder how you kids get through school if your daddy and mommy don't do your homework for you. Do you sit there and cry to the teacher how they're lame and ask you to do stuff that you don't know anything about, because you don't want to learn it?

ZOMG THAT'S SO GAY LEMME CUT MYSELF TO REMIND MYSELF THAT I CAN STILL FEEL!!!!!1!!!(5-4)!!!one

SHIFT_*grind* · 07-31-2008, 07:19 PM

Quote:

Originally Posted by DDSR240

14
16

Quote:

Originally Posted by Z33dori

just a tip.....dont run it past 18psi

def stay away from 20......

Holy hell, are you people really running your little T25s at 16 and 18psi? Why?

Stock is 11psi, 7 without the boost solenoid (which most motor swaps don't have). There is 0 reason to put it past 14, and that's pushing it.

Sileighty_85 · 07-31-2008, 07:24 PM

Quote:

Originally Posted by SoSideways

Holy fuck my text box is now full of red squiggly lines from improper English.

Instead of typing a n00b ass question like a lame ass person, why don't you do us all a favor and USE THE FUCKING SEARCH FUNCTION AND ANSWER YOUR OWN DAMN QUESTION?

About a billion n00bs have asked the same n00b ass questions before you, so what makes you think your n00b ass question will have a different answer than the same billion answers to the billions of n00b questions that you just asked?

Honestly, so many of you fucking n00b kids come on here and want people to spoon feed you information instead of doing some leg work and looking for the answers yourselves, sometimes I wonder how you kids get through school if your daddy and mommy don't do your homework for you. Do you sit there and cry to the teacher how they're lame and ask you to do stuff that you don't know anything about, because you don't want to learn it?

ZOMG THAT'S SO GAY LEMME CUT MYSELF TO REMIND MYSELF THAT I CAN STILL FEEL!!!!!1!!!(5-4)!!!one

This is not our Jobs to give you information, We dont get paid for this shit, so we dont have to answer your questions.

Like said we do this to help ppl out but were not gonna hold y'all hand and build or fix your car for you, you gotta meet us at a MINIMUM of half way.

Not shit like this,

My car runs shitty what should i do? I dont know Jack shit about cars or Turbo'd Engines, I bought this Engine to be cool like everyone else.

Cuz then we respond:

FAIL!! Search n00b!!

Somthing like this:
My car is bogging under boost, I already checked Boost leaks, MAF, CAS, Injectors, TPS. Is there anything else I should check?

We Respond:
Oh ok Well what fuel Pump are you running?

Oh a stock KA F/P KA F/P is Old and Crappy
You need to slap in a Walbro 255 F/P

Then you respond:

Hey I put in the New F/P and everything is perfect
Thanks Zilvia guyz

Then you Give us lots of Rep Points ^_^
And Every Ones happy

TurboNinja · 07-31-2008, 08:50 PM

Quote:

Originally Posted by Sileighty_85

This is not our Jobs to give you information, We dont get paid for this shit, so we dont have to answer your questions.

Like said we do this to help ppl out but were not gonna hold y'all hand and build or fix your car for you, you gotta meet us at a MINIMUM of half way.

Not shit like this,

My car runs shitty what should i do? I dont know Jack shit about cars or Turbo'd Engines, I bought this Engine to be cool like everyone else.

Cuz then we respond:

FAIL!! Search n00b!!

Somthing like this:
My car is bogging under boost, I already checked Boost leaks, MAF, CAS, Injectors, TPS. Is there anything else I should check?

We Respond:
Oh ok Well what fuel Pump are you running?

Oh a stock KA F/P KA F/P is Old and Crappy
You need to slap in a Walbro 255 F/P

Then you respond:

Hey I put in the New F/P and everything is perfect
Thanks Zilvia guyz

Then you Give us lots of Rep Points ^_^
And Every Ones happy

Read my original post when I made this thread, you guys are now comparing apples to oranges.The only reason your doing this now is because of my first post on this forum to which yes I was in the wrong, but for god sakes let it go.

Mikey88 · 07-31-2008, 11:30 PM

search ftw!

DDSR240 · 08-01-2008, 09:48 AM

Quote:

Originally Posted by SHIFT_*grind*

Holy hell, are you people really running your little T25s at 16 and 18psi? Why?

Stock is 11psi, 7 without the boost solenoid (which most motor swaps don't have). There is 0 reason to put it past 14, and that's pushing it.

Back in the day when I had a t25 I actually kept getting good results untill I hit 16 psi (thats on a real dyno not seat of the pants). I also had a pretty effieciant intercooler so that let me get away with that couple extra psi. BUT!!! I am in no way sugguesting anybody with a t25 go past 14 (thats with a front mount)...I've learned my lesson it best to just go to a larger turbo and be safe.

Clowny · 08-01-2008, 10:40 AM

Quote:

Originally Posted by TurboNinja

I have been noticing me turbo not wanting to kick in as efficiently lately.Seem to have to really mat it to get up to speed.Now mind you this is the first high performance vehicle I have ever owned.I do not have a boost controler as of yet, and my boost is egaging to 5psi.I will be getting this soon but Im far too cheap to do this sooner that later.Also from what I have noted myh oil level has been over filled since my sr20 motor was installed, wondering if this may cause this concern and/or what should I be watching out for.

the only possibility that I can think of is that if the motor is over filled with oil, then the oil cant drain enough from the turbo, there's too much oil in the bearing housing, and its causing too much friction on you turboshaft and bearings for it to spool properly. i had this kind of problem on a homemade jet engine i made out of a t2 from a volvo. after awhile of it running like shit, the oil pressure, plus there being too much oil in the turbo, caused the rear seals too blow out and then it was smoke city. hope it helps.

Sileighty_85 · 08-01-2008, 10:56 AM

Quote:

Originally Posted by Clowny

the only possibility that I can think of is that if the motor is over filled with oil, then the oil cant drain enough from the turbo, there's too much oil in the bearing housing, and its causing too much friction on you turboshaft and bearings for it to spool properly. i had this kind of problem on a homemade jet engine i made out of a t2 from a volvo. after awhile of it running like shit, the oil pressure, plus there being too much oil in the turbo, caused the rear seals too blow out and then it was smoke city. hope it helps.

The Oil feed Banjo bolt has an oil restrictor built in to it so its not gonna over pressureize the bearing center section, plus I've never heard of haveing too much lubrication making somthing spin slower. Yes Over pressuring the center section will blow the seals out but not slow it down

Over filling the oil is not that big a deal, its not like there is a point to where the oil pump needs to not pump oil, the main concern is not filling it up to the the oil return point

Clowny · 08-01-2008, 11:28 AM

Quote:

Originally Posted by Sileighty_85

The Oil feed Banjo bolt has an oil restrictor built in to it so its not gonna over pressureize the bearing center section, plus I've never heard of haveing too much lubrication making somthing spin slower. Yes Over pressuring the center section will blow the seals out but not slow it down

Over filling the oil is not that big a deal, its not like there is a point to where the oil pump needs to not pump oil, the main concern is not filling it up to the the oil return point

gotcha. well on my jet, there is no flow restrictor for the oil. and when im starting it up, i have to drop the pressure down to about half just to get it to spool high enough to idle because it seriously wont want to spin fast enough becuase of the oil. once the engine warms up and the oil viscosity drops, i can then bring the oil pressure back to full.

so sorry turbo ninja. guess my idea wont help. hope you get it figured out.

TurboNinja · 08-01-2008, 11:34 AM

Im really worried about the seals mainly thats why I havent driven it all week.But I think Clowny does make a good point.

Sileighty_85 · 08-01-2008, 11:43 AM

Quote:

Originally Posted by TurboNinja

Im really worried about the seals mainly thats why I havent driven it all week.But I think Clowny does make a good point.

If you are running the OEM Hardlines for the turbo you do not need to worry about over pressureizing the the Center Section becuase there is a n Oil Restrictor installed

Too much Oil will not slow down your turbo spool

SoSideways · 08-01-2008, 12:15 PM

Hmm... what type of oil are you guys talking about?

Too thick of an oil could cause the turbo to not spin as smoothly I guess, but honestly, I'd rather have the turbo not spin as smoothly than to risk not having enough lubrication on it.

Black240Ct · 08-01-2008, 01:28 PM

i dont know if u had ur question answered i skipped a bunch of posts. but an exhaust leak could cause the cars response to feel like shit. either the head to ehaust gasket or the turbo mani to turbo gasket. see if there are leaks,

or just your shitty waste gate giving out. get a hks one. well worth the cash and you can adjust boost with it. made a big difference on my car.

singlecamslam · 08-01-2008, 01:46 PM

you would hear an exhaust leak before you can feel it. And Royal Purple is the best oil for your SR.

07-31-2008, 01:38 PM	#1
TurboNinja Join Date: Jul 2008 Location: Canada Age: 39 Posts: 29 Trader Rating: (0) Feedback Score: 0 reviews	Turbo seems to be bogging out...could be wrong..please help. I have been noticing me turbo not wanting to kick in as efficiently lately.Seem to have to really mat it to get up to speed.Now mind you this is the first high performance vehicle I have ever owned.I do not have a boost controler as of yet, and my boost is egaging to 5psi.I will be getting this soon but Im far too cheap to do this sooner that later.Also from what I have noted myh oil level has been over filled since my sr20 motor was installed, wondering if this may cause this concern and/or what should I be watching out for.

07-31-2008, 02:04 PM	#3
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	5 psi is not shit thats why your car feels slow when you up up it to 10+ psi you will notice a huge differnce. __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

08-01-2008, 01:46 PM	#30
singlecamslam Post Whore! Join Date: Apr 2008 Location: Norcal Posts: 2,531 Trader Rating: (10) Feedback Score: 10 reviews	you would hear an exhaust leak before you can feel it. And Royal Purple is the best oil for your SR. __________________ Nothing says racecar like a stock car with no interior.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

07-31-2008, 01:59 PM	#2
SoSideways Post Whore! Join Date: Apr 2003 Location: 你老母 Posts: 4,371 Trader Rating: (4) Feedback Score: 4 reviews	Sounds like an exhaust leak pre-turbo.

07-31-2008, 02:09 PM	#4
TurboNinja Join Date: Jul 2008 Location: Canada Age: 39 Posts: 29 Trader Rating: (0) Feedback Score: 0 reviews	Thats what Ive been thing all along, but when I frist brought it up to my shop when it was a hell of allot worse they replaced the maf and sent me on my way.For a while there it ran awesome!

07-31-2008, 02:17 PM	#8
TurboNinja Join Date: Jul 2008 Location: Canada Age: 39 Posts: 29 Trader Rating: (0) Feedback Score: 0 reviews	Do you have any tips or suggestions as far as the best boost controler to use?

07-31-2008, 02:56 PM	#10
TurboNinja Join Date: Jul 2008 Location: Canada Age: 39 Posts: 29 Trader Rating: (0) Feedback Score: 0 reviews	What is with this place....you can ask a question without being shit on.

07-31-2008, 11:30 PM	#21
Mikey88 Zilvia Member Join Date: Jul 2008 Location: Somewhere in California Age: 33 Posts: 229 Trader Rating: (0) Feedback Score: 0 reviews	search ftw!

08-01-2008, 11:34 AM	#26
TurboNinja Join Date: Jul 2008 Location: Canada Age: 39 Posts: 29 Trader Rating: (0) Feedback Score: 0 reviews	Im really worried about the seals mainly thats why I havent driven it all week.But I think Clowny does make a good point.

08-01-2008, 12:15 PM	#28
SoSideways Post Whore! Join Date: Apr 2003 Location: 你老母 Posts: 4,371 Trader Rating: (4) Feedback Score: 4 reviews	Hmm... what type of oil are you guys talking about? Too thick of an oil could cause the turbo to not spin as smoothly I guess, but honestly, I'd rather have the turbo not spin as smoothly than to risk not having enough lubrication on it.

08-01-2008, 01:28 PM	#29
Black240Ct Zilvia Junkie Join Date: Sep 2003 Location: CT Age: 35 Posts: 563 Trader Rating: (6) Feedback Score: 6 reviews	i dont know if u had ur question answered i skipped a bunch of posts. but an exhaust leak could cause the cars response to feel like shit. either the head to ehaust gasket or the turbo mani to turbo gasket. see if there are leaks, or just your shitty waste gate giving out. get a hks one. well worth the cash and you can adjust boost with it. made a big difference on my car.