Rb25 Wastegate Actuator Valve On2 Rb20

[blackprincegts]

Iv almost got together the parts for my RB20DE - DET upgrade (no smart ass comments please <_< ) and one thing i havn't got is the boost regulator valve that controls the wastegate to open at standard boost. I can get one cheap of an RB25det but alls i want to know is will it open the wastegate at the same point the RB20det one would. I compared it with one of a RB20DET from a ceffy and it looked identical.

anyone know if the 25 one will do the job properly for me?

thanx!

[RB30-POWER]

RB25 actuator is 5psi

RB20 actuator is 10psi

[predator]

rb25 actuator is 7psi! run the stock one to direct to your piping..

that's what you get.

[RB30-POWER]

Its 5 psi mate.

The standard boost on an RB25 is 5psi, until it reaches 4500rpm when the boost solonoid bleeds air to reach 7psi.

If it was 7psi, how would the RB25 have two stage boost? You cant run boost lower then the wastegate spring tension.

Besides i put one onto an RB30DET i built with both a RB25DET and VG30DET turbo and when the wastegate actuator is plumbed straight to vacuum/boost source it hold exactly 5psi.

[blackprincegts]

Thanks Guys. Much appriciated.

I wanted to try and find a way to run only 5psi anyway.

Thanks.