Turbo Actuators

[Graeme Shaw]

Wheres the best/cheapest place to get 2 new standard actuators from?

Thanks
Graeme

 

[Nastymatt]

I see your car has had a re map - are standard actuators the best for this?

I don't know.. just curios.

 

[Graeme Shaw]

From reading other posts I think its only a good idea to uprate the actuators if your running uprated turbos.
Hope fully someone with more knowledge can confirm this

Also does anyone know what bar the actuators should be opening at?

I seem to remember reading somewhere that it should be about 0.5 bar?

Ta
Graeme

 

[RWD_cossie_wil]

Don't fit important parts on the word of someone on a forum, the correct actuators are absolutly vital to ensure the safty of your engine.... Talk to whoever tuned your car and go with your tuners advice, a relativly simple part could really make a mess if it is set incorrectly or the spring rate is not quite correct.

 

[Graeme Shaw]

Can of worms opened..............

This is the age old problem, many tuners including the one that mapped my car advise uprated actuators (forge) they would do as they sell them!

But as I have seen in other discussions other tuners say to use standard actuators :?:

Bonus of forge is they seem a hell of a lot cheaper.......

G

 

[RWD_cossie_wil]

My question would be why do you need uprated actuators? I am not hugely up on 911 turbo tuning but have been involved in turbo cars for years , for a simple stage one & a mild boost increase, I Would have thought you would be better off with a genuine actuator that has the correct spring rate etc. Certainly in the Cosworth world, a lot of tuners don't like the Forge actuators as the opening spring rates are wrong & not as progressive as the genuine garret -31 actuators.

The important thing is that your tuner is now your first port of call, his remap may be significantly different to other tuners, so stick with his advice to avoid mismatched parts.

 

[quattrosteph]

Forgemotorsport are adjustable. Different springs available. Very good quality product. They need to be fitted by a very good Tuning company who done it before. Badly adjusted you can run down on power or holding too much boost too high in the rev band.... As said above talk to your Tuning company.
I am running some on my car.

 

[DeathStar]

Forgemotorsport are adjustable. Different springs available. Very good quality product. They need to be fitted by a very good Tuning company who done it before. Badly adjusted you can run down on power or holding too much boost too high in the rev band.... As said above talk to your Tuning company.
I am running some on my car.

I too have the Forge w/g actuators - they came with fitted with 1bar springs - my "tuna" changed them for a set of 0.8bar springs which were the best match for the boost I'm running (1.1/1.2bar peak)

 

[Graeme Shaw]

My car is mapped to about 1.0-1.2 bar but lately has been only running 0.6-0.7 bar.
I have had it leak tested and found and fixed one leak however it still wont run full boost.

I think the actuators are slightly "soft". I think the n75 is maxed out and the actuators are slightly opening under full load.

The mapper also said I should uprate the actuators but to be honest im still not convinced I need up rated ones.

G

 

[quattrosteph]

A good tuning should found the problem on your car.

 

[DeathStar]

A good tuning company should find the problem with your car.

Fixed that for you Steph