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couple questions for you guys running a turbosmart wastegate actuator or any aftermarket actuator really.
so i picked up a 7163 supercore with no actuator and i plan on buying the turbosmart one. there is just so many different options to buy as far as psi, springs, rods, etc that im completely lost. i wouldnt wanna buy things more than once yknow? i just wanna buy the correct stuff from the get go.
so question is, of the many options available, what the heck do i buy?? i want boost in hpt to be able to be adjusted accordingly anywhere from say 24-30 psi with or without a ramp depending on what im going for in the tune at the time and want the wastegate to hold like a champ! no funny boost issues
what spring or spring combination would i need to use in the wastegate for boost in that range, or would i need to swap springs constantly?
what do you guys use or have you guys used before with great results?
what about the rod length/adjustment settings? preload?
knowing what you know now, whats everything you would buy from the turbosmart website at once if you were doing it all over again right now?
i have a zzp turbo housing if that affects anything and the actuator doesnt include the little clevis thing that attaches to the housing neither but theres many options for those too! as you can see im totally lost
any help on the matter would be greatly appreciated! thanks alot
Typically, you want to get a wastegate with a spring in it that is as close to the base boost you want to run. Example, when my Evo is on pump gas, it sees a minimum 20 psi. So I went with a 18# wastegate. Seeing that both my Evo and Cobalts have a solenoid to raise the boost, a 18# WG should be able to double itself. When I am on E85, I run 32 psi of boost still with my 18# wastegate.
However, the stiffer the WG spring you go with, the more chance of a spike in boost you will have. The flapper arm/bypass wont open as far with a stiff spring compared to a soft spring running at the same psi. If its not opening as far, it has a harder time bypassing enough air when boost first hits since the valve doesnt open as far.
Preload is a pretty simple concept. I set it to match whatever spring is in the WG. So my 18# spring is set to not budge until it hits 18 psi. This will help it spool up a bit faster. If you have no preload on it, the bypass valve will start to open before it hits the target boost. You will need a little hand pump with a gauge to be able to pump up the WG and see when it starts to open. From there, just screw the WG arm in or out until you hit the desired #.
I'll second what he said about picking it with a good pressure baseline in mind. I went with a 15 psi spring in my TiAL; I wanted 15 psi to be a good safe baseline to start my tuning from (I'm running a turbo LSJ, so I had to start from scratch on my tune). I don't know about the Turbosmart... but you can't change the TiAL springs whenever you want (it is a bit of a PITA), so it's not like it's a life or death, one time decision.
how about single vs twin port? thats another option i see. what if i just find the original actuator that comes with the turbo? is that good enough? whatever works best honestly. its the last piece of the puzzle before the turbo goes in
A single port WG will do everything you need. Get a quality one like the Turbosmart (thats what I run) so that if you need to change springs for whatever reason, you at least have the option to.
heres a twin port actuator set up. i can see this being alot more precise for boost control but if its not absolutely necessary to run it this way then its fine.
the next options are the rods. i see 120mm single scroll, 140mm twin scroll and 160mm single and twin scroll. i have the zzp housing so im going to assume twin scroll. 140 or 160 though?
When ordering from TS, you can specify what # spring you want and they will put it in at no extra charge. Well at least thats what they do for me. PM me if you want with a part number and I will see what kind of price I can get you.
The rod length on a stock WG is 120mm I believe. Pretty sure your turbo would use a stock length one but I dont know for sure. Might be a better question for ZZP.
If you arent going to be running a crazy amount of boost (40psi) you dont need a twin port.
03-31-2020, 01:30 PM
