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R33 actuator issues

RB_purr

By RB_purr,
in Engines & Forced Induction

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RB_purr

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R33 actuator issues

Hey guys

I'm having issues with my actuator on my 33 it keeps getting stuck open it never used to have this issue and I haven't changed anything for this problem to arise i can only assume its just seen better days even if I move it by hand it get stuck open halfway..

It's the stock RB25 actuator and I'm running 14psi with a boost tee on the stock turbo would i be best to settle for a 14psi actuator from turbosmart considering that's the set boost level that I always use ?

i have heard some people use a lower psi actuator but run higher boost which I can't quite understand  but would I be right in saying that a 14 psi actuator for a 14psi boost level be better suited for my application?

Just wanted to check in with other members before I go spending the money 

Cheers 

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https://www.sau.com.au/forums/topic/468736-r33-actuator-issues/
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RB_purr

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2 minutes ago, 89CAL said:

Its better to run an actuator with a lower spring pressure then your target boost and get their with a boost controller, it means the boost comes on a little stronger

So would I be better off settling with an RB20 actuator?

89CAL Grand Master

89CAL

Posted
Posted

Have you checked the rod and flap? Remove the rod from the arm that controls the flap and see if the flap moves freely. Check that there is some pre-load on the actuator. If the flap moves fine then no harm in replacing the actuator

RB_purr Collaborator

RB_purr

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Posted (edited)
5 minutes ago, 89CAL said:

Have you checked the rod and flap? Remove the rod from the arm that controls the flap and see if the flap moves freely. Check that there is some pre-load on the actuator. If the flap moves fine then no harm in replacing the actuator

Nah it's not moving as freely as it should but there is some preload  what actuator would be the best option to go with you think ?

Edited by RB_purr
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admS15 Grand Master

admS15

Posted
Posted

If the flap isn't moving freely, an actuator isn't going to fix your problem. As I stated in your other thread about this, you can try freeing it up by spraying wd40 or equivalent on it and working it loose or remove the turbo and have the wastegate looked at by a professional.

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