anybody using co2 to supply signal to wastegate? looking for info.

 

Why?

 

why not?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by s4yama &raquo;</TD></TR><TR><TD CLASS="quote">why not?</TD></TR></TABLE>

Because the wastegate gets its signal from engine vacuum and not pressure perhaps? If you're too cheap or lazy to run a boost controller it'll magically open on its own. NEAT!

 

What info are you looking for in specific ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by danmdevries &raquo;</TD></TR><TR><TD CLASS="quote">Why?</TD></TR></TABLE>
Iam sure that different people use C02 for different reasons but in a nut shell it allows you to put a very small spring in your wastegate and still have the ability to run high boost pressures which is not usually possible when using the boost pressure provided by the vehicle.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jvs10 &raquo;</TD></TR><TR><TD CLASS="quote">

Because the wastegate gets its signal from engine vacuum and not pressure perhaps? If you're too cheap or lazy to run a boost controller it'll magically open on its own. NEAT!</TD></TR></TABLE>

For your information I use an Innovative MSBC, so if you have nothing better to add except infantile remarks you should just keep them to yourself and let the intelligent people answer my question.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PPLH8R &raquo;</TD></TR><TR><TD CLASS="quote">
Iam sure that different people use C02 for different reasons but in a nut shell it allows you to put a very small spring in your wastegate and still have the ability to run high boost pressures which is not usually possible when using the boost pressure provided by the vehicle. </TD></TR></TABLE>

Thanks for the respectful and insightful response. By the way I like your avatar.

 

i use c02 more often than not on the dyno. i have a boost controller set up just for the dyno that saves me a LOT of time. what exactly is it that you want to know?

 

[QUOTE=Turbo-charged]i use c02 more often than not on the dyno. i have a boost controller set up just for the dyno that saves me a LOT of time. what exactly is it that you want to know?[/QUOTE ]

Just curious if it is a practical set up to use on a car that is for racing purposes only. And also maybe getting a more solid and accurate control of the wastegate.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by s4yama &raquo;</TD></TR><TR><TD CLASS="quote">

For your information I use an Innovative MSBC, so if you have nothing better to add except infantile remarks you should just keep them to yourself and let the intelligent people answer my question.</TD></TR></TABLE>

Perhaps if you'd actually give us some info as to what you are trying to do, I wouldn't mistake you for some 16 year old trying to put a completely unnecessary piece of equipment on his car. Never mind what others use it for, what are YOUR goals?

 

Co2 works really well for a drag car if you are trying to run super low wastegate springs and get a ton of boost out of the set-up that otherwise would not have been possible with just manifold pressure alone. We have done it on our drag radial car a few years back and were able to run 11.0 @ 140 on a 225/50/15 BFG tire with a 1.78 60 ft. 3psi wastegate springs in each gate and were able to get 30psi manifold pressure with much higher than 1:1 backpressure in the exhaust manifold.

 

the c02 does make things nice. the pressure is always there, its also always the "same pressurem", so therfore your boost control should be much more accurate. we have been using it for ~3 years now and i wouldnt have it any other way.

 

How much power is your car making/ how much boost are you running?

 

I cant make more than 33 psi on 11.?? spring do I need co2?Twin scroll man. and 42r turbo.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted hybrid &raquo;</TD></TR><TR><TD CLASS="quote">Co2 works really well for a drag car if you are trying to run super low wastegate springs and get a ton of boost out of the set-up that otherwise would not have been possible with just manifold pressure alone.</TD></TR></TABLE>
Sounds very interesting, can you give us some information about the routing of the lines and the used solenoids?

i think because of the temperature of co2 you have to use special solenoid valves?

how long does such a system is capable of controlling the boost? (so how fast does the co2 bottle empty itself)

do you think it can be useable in a circuit track car as well or is it just not lasting long enough.

Best regards

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrx &raquo;</TD></TR><TR><TD CLASS="quote">
Sounds very interesting, can you give us some information about the routing of the lines and the used solenoids?

i think because of the temperature of co2 you have to use special solenoid valves?

how long does such a system is capable of controlling the boost? (so how fast does the co2 bottle empty itself)

do you think it can be useable in a circuit track car as well or is it just not lasting long enough.

Best regards</TD></TR></TABLE>What boost controler do you have?

 

we have no problem making 40-45 intake manifold psi,using 6 lb wastegate springs (with c02)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DaveF &raquo;</TD></TR><TR><TD CLASS="quote">we have no problem making 40-45 intake manifold psi,using 6 lb wastegate springs (with c02)</TD></TR></TABLE>What about no co2?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1junkycivic &raquo;</TD></TR><TR><TD CLASS="quote">What boost controler do you have?</TD></TR></TABLE>
Self developed controller, but this was just a general question. The solenoid i use currently is a standard valve from the automotive industy boost controller, so nothing special... i think just like any other boost control solenoid.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrx &raquo;</TD></TR><TR><TD CLASS="quote">
Self developed controller, but this was just a general question. The solenoid i use currently is a standard valve from the automotive industy boost controller, so nothing special... i think just like any other boost control solenoid.</TD></TR></TABLE>Manifold pressure source is what ur using co2 for I think.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1junkycivic &raquo;</TD></TR><TR><TD CLASS="quote">Manifold pressure source is what ur using co2 for I think.</TD></TR></TABLE>
Yes,
The bottom of the gate would be run to boost pressure and the top of the gate would be run to the C02. As others have stated the pressure you are providing to the top of the gate is being provided by a tank and not the turbo pressure which is constantly changing.
I have no first hand experience running a setup like this but I have done alot of reading on the subject. I know that you need obviously a tank for the c02 and a regulator that can drop the pressure from a usually really high tank pressure to a more suitable target pressure for the gate.
My question to the guys that have run this type of setup is.
Why do they use C02 ? Couldnt you just use compressed air. ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PPLH8R &raquo;</TD></TR><TR><TD CLASS="quote">
Yes,
The bottom of the gate would be run to boost pressure and the top of the gate would be run to the C02. As others have stated the pressure you are providing to the top of the gate is being provided by a tank and not the turbo pressure which is constantly changing.
I have no first hand experience running a setup like this but I have done alot of reading on the subject. I know that you need obviously a tank for the c02 and a regulator that can drop the pressure from a usually really high tank pressure to a more suitable target pressure for the gate.
My question to the guys that have run this type of setup is.
Why do they use C02 ? Couldnt you just use compressed air. ?</TD></TR></TABLE>The bottle could something in it I have heard.

 

We were using the push lock fittings and line for the routing of the co2 to the top port of the wastegate. We were also using the NLR AMS-1000 boost controller to control boost with the co2. We needed to run 55psi line pressure to achieve 30psi to the top port of the gate using a 3psi wastegate spring in each gate (gt35r .82a/r turbo). At 30psi we were getting approximately 46psi of backpressure in the exhaust manifold. The NLR controller applied the needed pressure to achieve 30psi intake manifold pressure.

I just tuned a car using the hondata mac valve with Hondata s300 controlling boost (boost by gear and rpm) with Co2. With 7psi wastegate springs in the gates and 50psi line pressure to the solenoid we got 42psi of boost. Turbo was a s372 with a 1.25 a/r housing with twin tial 38mm gates. No idea on backpressure, didnt measure it since it was a customers car.

With a 5 lb bottle, we ran about 50 passes until it emptied which was about 1/2 season of racing. You could run co2 on a track car (road race), but i doubt you would need to run tons of boost for cornering/track. To keep things simple you would be better off just running manifold pressure to control boost. I recommend not running co2 if you dont need it, its just one more thing to worry about going wrong.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1junkycivic &raquo;</TD></TR><TR><TD CLASS="quote">I cant make more than 33 psi on 11.?? spring do I need co2?Twin scroll man. and 42r turbo.</TD></TR></TABLE>Anyone?