Which WASTEGATE ACTUATOR to Get?
So basically the evo spring gives me a 19-24psi window of settings and adjustments made within that range are accomplished by screwing the linkage end in or out, correct?
And if I wish to boost up to say, 26psi via mbc, that same 19-24psi spring will still hold the higher boost fine?
And if I wish to boost up to say, 26psi via mbc, that same 19-24psi spring will still hold the higher boost fine?
You are correct on both accounts! 
For those that choose to use a slightly lower actuator base pressure, we can build any actuator with the Blue colored spring upon request at no additional charge.
For those that choose to use a slightly lower actuator base pressure, we can build any actuator with the Blue colored spring upon request at no additional charge.
Yes sir, red evo 19-24 spring I think thats what was just mentioned.
Set the mbc to 22 and screw the actuator's end about half way (ball park, cant really directly fine tune with it since the mbc will be sending the regulated psi).
Walla, no more taper,
I gotta get one of these once I boost beyond 21.5
Set the mbc to 22 and screw the actuator's end about half way (ball park, cant really directly fine tune with it since the mbc will be sending the regulated psi).
Walla, no more taper,
I gotta get one of these once I boost beyond 21.5
Well that depends.
If you want to use the 14-18 PSI spring, you can, but you will need to use some type of boost controller to adjust up to 22 PSI.
If you want to use the 19-24 PSI spring, you can as well, but you will need to adjust the actuator to a lower setting and use less adjustment on whatever boost control device you wind up using.
If you want to use the 14-18 PSI spring, you can, but you will need to use some type of boost controller to adjust up to 22 PSI.
If you want to use the 19-24 PSI spring, you can as well, but you will need to adjust the actuator to a lower setting and use less adjustment on whatever boost control device you wind up using.
Either will work and hold boost identically when used with a manual boost controller and adjusted to a given point, but each obviously has a different range of boost it will hold given the same boost controller settings or if no boost controller is used at all.
This is something you will need to decide yourself.
This is something you will need to decide yourself.
The red spring is ideal for most of us that plan to run 20psi or so, but you guys have to remember that since it's BASE psi is 19- that you can't go lower than that. I- on occassion- will go down to 15psi to save gas... So this wouldn't be the spring I'd choose. I'd likely choose the blue spring and then just use the hallman to get upt to 20-22psi.
Mike, does this sound about right?
Mike, does this sound about right?
That's exactly right!
The base setting means that there is no adjustment lower than that point.
This is the number you will be starting with BEFORE even the addition of a boost controller, whereas the OEM actuator has a 12 PSI base setting when the OEM solenoid is removed.
The base setting means that there is no adjustment lower than that point.
This is the number you will be starting with BEFORE even the addition of a boost controller, whereas the OEM actuator has a 12 PSI base setting when the OEM solenoid is removed.
Originally Posted by davidbuschur
We sell the Forged wastegate actuator and one of our own. The forged unit is adjustable and comes with a variety of springs, plus the rod is still adjustable. Nice if you are going to be changing boost levels and such.
The other we sell is a modified stock actuator that is actually taken apart and has a heavier spring installed. This actuator is rated at 26 psi, very heavy duty. Recommend it for race gas or alky use only. You cannot tell that it is not stock.
David Buschur
www.buschurracing.com
The other we sell is a modified stock actuator that is actually taken apart and has a heavier spring installed. This actuator is rated at 26 psi, very heavy duty. Recommend it for race gas or alky use only. You cannot tell that it is not stock.
David Buschur
www.buschurracing.com
also... for all parties, the actuators i hear may require the use of the stock turbo elbow... as in it won't fit if a larger pipe is in place like say the turbohoses.com intercooler pipe kit elbow.
Last edited by trinydex; Nov 8, 2005 at 03:17 AM.
Originally Posted by smp3000
"but you guys have to remember that since it's BASE psi is 19- that you can't go lower than that. I- on occassion- will go down to 15psi to save gas... "Peter Pan" SMP3000
Just regulate the min psi with your foot.
It's not like your stuck with 19psi min and as soon as you start your car your at 19psi of boost
Kinda silly imagining myself with the accelerator mashed to the floor with goals of achieving 15 psi boost for saving gas.
If you want to save gas, lay off the boost period, 15psi won't save you much more gas than say 20psi
Last edited by C6C6CH3vo; Nov 8, 2005 at 05:49 AM.
^^ Dude how on earth did you get the word "Peter Pan" in my quote?? lol
You're right about laying off the boost to acheive a lesser psi. That, of course, is the other option. But not all of us want to have to monitor that all the time. It's nice to set the boost and know it won't go above that unless you change it.
Either way is good and will work.
You seem very partial to the Red Spring. Possibly a relative?
You're right about laying off the boost to acheive a lesser psi. That, of course, is the other option. But not all of us want to have to monitor that all the time. It's nice to set the boost and know it won't go above that unless you change it.
Either way is good and will work.
You seem very partial to the Red Spring. Possibly a relative?
Red springs all the way! even though my WG actuator is still stock.
Once I start achieving boost levels well above 22 psi via 10.5 HS and alcohol kit, I'm definately going to get the Forge unit/with red spring of course. But as for now, stocker.
What did you mean by relative?
Once I start achieving boost levels well above 22 psi via 10.5 HS and alcohol kit, I'm definately going to get the Forge unit/with red spring of course. But as for now, stocker.
What did you mean by relative?
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Originally Posted by C6C6CH3vo
Just regulate the min psi with your foot.
It's not like your stuck with 19psi min and as soon as you start your car your at 19psi of boost
Kinda silly imagining myself with the accelerator mashed to the floor with goals of achieving 15 psi boost for saving gas.
If you want to save gas, lay off the boost period, 15psi won't save you much more gas than say 20psi
It's not like your stuck with 19psi min and as soon as you start your car your at 19psi of boost
Kinda silly imagining myself with the accelerator mashed to the floor with goals of achieving 15 psi boost for saving gas.
If you want to save gas, lay off the boost period, 15psi won't save you much more gas than say 20psi