Turbo question

[TurboSpeed]

Ok i was out driving the GN yesterday and when i go part throttle and boost comes up and i hold it at part throttle the boost starts to flutter. Is this normal And if not what do i need to do to stop it. Thanks

 

[Royal-T-Ltd]

Compressor Surge...... search for it.... HTH

 

[TurboSpeed]

Well its like the puck is opening and closing super fast, could i tighten the rod alittle and then adjust the boost controller?

 

[TurboDave]

Well its like the puck is opening and closing super fast, could i tighten the rod alittle and then adjust the boost controller?

Adjusting the rod wont' help. As has been pointed out, you are suffering from compressor surge. Quite common on some setups with aftermarket parts and only partial/half throttle acceleration. You can avoid it by just applying a little more or less throttle.
Some things that can help or eliminate it are changes to the intake plumbing (pipe sizes, volumes, etc.)
I don't advocate spending a huge amount of $$$ to clear it up, but mine was cured when I switched to a front mount IC.

 

[turbojd]

I solved my compressor surge by putting the tornado in front of the inlet bell, in the maf pipe.

 

[TurboSpeed]

Thanks guys. But what is a tornado? is that the little gas saving device that come out a couple years back.

 

[Royal-T-Ltd]

Thanks guys. But what is a tornado? is that the little gas saving device that come out a couple years back.

yes... And not trying to be mean but that's why I posted what I posted.... Our search function is invaluable and most issues with our 20+ year old cars have been covered at least..... Twice

 

[TurboSpeed]

I search alittle but what does HTH mean? Sorry Im kinda stupid sometimes.

 

[turbojd]

HTH= Hope that helps

 

[TurboRegal84]

I solved my compressor surge by putting the tornado in front of the inlet bell, in the maf pipe.

You are asking for trouble putting one of those things in front of the turbo. DO NOT USE THEM! Anything pre-turbo is a restriction and if it comes loose you will be replacing your turbo.

 

[TurboDave]

I can't believe that people actually stick one of those cheap THIN made in china pieces of tin in front of their turbo!!!

 

[Alky V6]

I can't believe that people actually stick one of those cheap THIN made in china pieces of tin in front of their turbo!!!

I'm using one of them high tech devices. How else do you think I got this thing into the eights, and got around the compressor surge with this monster 91mm. :biggrin:

 

[TurboDave]

I'm using one of them high tech devices. How else do you think I got this thing into the eights. :biggrin:

Donnie, you might be happy to know, the tranny's you built for me years ago(in the 86 and 87) are still going strong! Just wish I could afford to get rid of this 7 disk vigilante. :frown:

 

[Alky V6]

Donnie, you might be happy to know, the tranny's you built for me years ago(in the 86 and 87) are still going strong! Just wish I could afford to get rid of this 7 disk vigilante. :frown:

I know what you mean. The vigilantes sure seem to be old school now. Chad got tired of his, too. It wanting to kill the motor when put into gear until the fluid got hot enough. He switched to one of Dusty's non-L/Us. Seems to be working very nicely.

 

[TurboSpeed]

Ok now in know what HTH means lol. I will make sure i dont use a tornado either lol. Thanks for the help.

 

[charlief1]

I'm using one of them high tech devices. How else do you think I got this thing into the eights, and got around the compressor surge with this monster 91mm. :biggrin:

LOL I'm sure you're not having compressor surge Donnie. Keep away from the Viagra and you should be good. J/K.:biggrin:

 

[GNVYUS 1]

I've been using the Tornado since Bruce Plecan discovered it's real value, stopping compressor surge. You'd be surprised at how little vacuum the turbo draws while at WOT, I wouldn't worry about that thing coming apart, it's been on a 61/52S for over 30k miles and still works.

Don you really using it or being sarcastic?

 

[Alky V6]

Sorry. Be sarcastic.

I wonder if taking the simple bottom of a can and cutting a hole in it that is slightly smaller than the OD of the can, and putting it in front of the turbo would have the same affect as the tornado. Simply adding something in front of the turbo to cause an air intake restriction. I would guess that would be cheaper than a tornado. One person already stated that installing a more restrictive maf sensor seemed to lessen surge.
Why don't one of you fellas that are using a tornado to control compressor surge do that experiment for the rest of us.
If the experiment is a success, that can only prove that any restriction put in front of the turbo will lessen compressor surge. And if that's true, then the restriction has to be hurting top end performance.

It would be interesting to see just how small a hole in the can it would take to lessen the compressor surge to the same degree as the tornado. If a hole that is 50% of the OD of the can is needed to control the surge to the same level as the tornado, then that would show just how restrictive the tornado really is. But, isn't the tornado supposed to be improving airflow and performance? Isn't that what the advertisement says?

 

[GNVYUS 1]

I thought so.

Anyways, the Tornado is doing two known things

1) Slight restriction
2) Reducing turbulent air while under boost

Looking at the evolution of the compressor covers will show better ways of doing what the Tornado does.

 

[Alky V6]

I thought so.

Anyways, the Tornado is doing two known things

1) Slight restriction
2) Reducing turbulent air while under boost

Looking at the evolution of the compressor covers will show better ways of doing what the Tornado does.

I'm not so sure that putting something in the air stream would necessarily reduce turbulent air. The tornado could actually be creating turbulent air, since turbulent air can cause a restriction to smooth flow. And we already are pretty sure the tornado presents a restriction.