actuators

[jonnyshaw49]

hi could someone please give me a quick explanation on actuators available eg -31 etc, im currently running a t2/t25 with 360 bearings but next year want to move up to a t25 or t28, im after a new actuator but with so many available dont know what is best, i want to run around 18 psi, i have double intercooler, running on standard pistons with headwork and 285 cam, what actuator would work best on my t25 but also when i get the new t25 or t28? also what are external wastegates used for and is there any benefit appreciate any advice thanks. i have a collins style t3 acuator but on rolling road they said it was too big and it might be leaking but dont know the make for new springs etc

[James George]

hi could someone please give me a quick explanation on actuators available eg -31 etc, im currently running a t2/t25 with 360 bearings but next year want to move up to a t25 or t28, im after a new actuator but with so many available dont know what is best, i want to run around 18 psi, i have double intercooler, running on standard pistons with headwork and 285 cam, what actuator would work best on my t25 but also when i get the new t25 or t28? also what are external wastegates used for and is there any benefit appreciate any advice thanks. i have a collins style t3 acuator but on rolling road they said it was too big and it might be leaking but dont know the make for new springs etc

http://www.mongooseexhausts.com/

thats collins website, surely a good shout if you need new diaphram for your actuator?

[jonnyshaw49]

i dont deal with them mate there useless went all the way down to that place with my mates rs turbo sat there for 4 and half hours whilst they tried to remap the car and they couldnt do it so had to do the 4 hr drive for absolute nothing. any other places selling different actuators couldnt find them on cgb anymore and forge website have they stopped making them?

[FQ200turbo]

i have forge one, i already tried all there is in actuadors, i prefer the forge for the T2, T25 or T28

[jonnyshaw49]

cheers mate thanks

[car.crash]

http://cgi.ebay.co.uk/Garrett-34-Wastegate-Actuator-for-Rs-Cosworth-Turbo_W0QQitemZ280412251988QQcmdZViewItemQQptZUK_C arsParts_Vehicles_CarParts_SM?hash=item4149df6754
http://cgi.ebay.co.uk/Garrett-31-Wastegate-Actuator-for-Rs-Cosworth-Turbo_W0QQitemZ280412251174QQcmdZViewItemQQptZUK_C arsParts_Vehicles_CarParts_SM?hash=item4149df6426

[Adam L]

Only touch genuine actuators, i.e, Garrett, for your application.

[jonnyshaw49]

so are forge no good mate? whats difference in -31 and -34 actuators .where do i get the genuine ones from to do upto 18 psi boost thanks

[Adam L]

If you look at the intercooler thread from last week you'll see what people think of Forge's equipment...

Car.crash has posted two links for genuine actuators, however the -34 might be a bit overkill. The -31 is capable of 30+ psi.

[jonnyshaw49]

thanks mate ill look at that thread now 30 psi is way too much for me so that -31 will be good enough for me

[car.crash]

If you look at the intercooler thread from last week you'll see what people think of Forge's equipment...

Car.crash has posted two links for genuine actuators, however the -34 might be a bit overkill. The -31 is capable of 30+ psi.

i knew i shouldnt have gone for the -34

[Adam L]

Even Robby laughed at how strong the springs are in them. We had to fit his one to the turbo because he couldn't pull the rod out, atall:laugh:

[car.crash]

funny you should say that, mine was set at around 3million psi after robbie borrowed it so i backed it off tonight a lot of turns and it still to 2 of us to get it back on. can i still run low boost with it? as i need to run the engine in.

[Adam L]

Off the top of my head, an untouched/shortened one is about 12psi preload and the -31 is 9psi. But the -31's and 34's have to be shortened for the 5 turbo's so preload could be out from standard.

[car.crash]

i had to shorten the rod loads and tap a new thread on before i could fit it. i still have a lot of pull on the actuator so i will back it right off as im on a std carb and dont need much boost yet. 12 psi would be ok i just need to be steady on the right foot.

[D4WNO]

mine was set at around 3million psi after robbie borrowed it

I've told you a THOUSAND times...I don't exaggerate :laugh:

[Logg]

funny you should say that, mine was set at around 3million psi after robbie borrowed it so i backed it off tonight a lot of turns and it still to 2 of us to get it back on. can i still run low boost with it? as i need to run the engine in.


Thats really odd as my -34 only ever runs 12psi no matter how much preload is used.

[jonnyshaw49]

does anyone know if there are any tests to test if an actuator is ok before fitting it onto a car, eg diapragm not split etc. as i have a collins type t3 actuator havnt got a clue what type, could it be a -31 or -34

[Adam L]

If it's a Collins actuator it is not a -31 or -34. Those two numbers relate to the part number Garrett give them. The Garrett actuators have their part number imprinted on them, so you'll know you've got a legit one.

The Collins ones have removable tops, as far as I can remember, so just take it apart and check the diaphram.

[jonnyshaw49]

hi i have taken the actuator off the spare turbo, it doesnt have anything stamped on it and its identical to the collins actuator on there site , so think its one of them, on the collins site it says it is a - 31 actuator and good for 25 psi without bleed valve, i took it apart and its got an orange diapraghm inside in good condition, so going to fit it onto my car, is there anything bad about using a collins actuator or disadvantage against genuine garett??

[Adam L]

Like I said, it's not a -31 actuator, as the -31 indicates the part number for the actuator from Garrett.

I'm not going to tell you whether to use it or not, it's your decision:).

[jonnyshaw49]

i was just going off the collins site they said its a -31 actuator , so whats difference is it the quality between garrets and the collins or the way it works???

[Markey Mark (BD)]

i was just going off the collins site they said its a -31 actuator , so whats difference is it the quality between garrets and the collins or the way it works???

I'd say quality mate, Garrett are pretty good whe it comes to quality.

[jonnyshaw49]

but would this one be worth using over the standard one untill i get a -31 garett bought???;)

[Markey Mark (BD)]

but would this one be worth using over the standard one untill i get a -31 garett bought???;)

Is there anything wrong with the standard one? Is it holding the boost you want?

[EDM]

but would this one be worth using over the standard one untill i get a -31 garett bought???;)


I'm using the collins actuator on mine at 20psi and its fine. Either actuator will b fine to use.