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rb25det questions

RYanR31

By RYanR31,
in Engines & Forced Induction

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RYanR31 Enthusiast

RYanR31

Posted
Posted

hey fellas, just got my rb25det bolted into my R31 Silhouette, Very pleased with the motor n gearbox, great performance! however i have a few questions.

The stock boost solinoid which comes off the actuator hose, can this be removed to eliminate the risk of boost spike or will this encourage this? also, if i was to bypass this by just running the actuator hose from the actuator straight to the intake piping will this create problems at all, im assuming not as most cars have this but im not sure on the workings of the boost solinoid of the rb25det and what it does.

My next question is, is the spigot bush in the back of the rb25det crank the same spigot size as the rb30 crank? i would assume so as they all have fairly identical cranks in the way of flywheel bolt pattern etc etc. just wondering...

also, after a good strap around the hills, how long would you guys reccomend to cool the car down before turnin it off?

thanks, peaceout

Ryan :headspin:

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paulr33 Grand Master

paulr33

Posted
Posted

the stock solenoid runs 4-5psi until the ecu goes past 4500rpm then it turns the solendid on or opens it to run 7-8psi. you can cut the white wire (gets grounded above 4500rpm) and ground it yourself so the boost solenoid always has power and will remain at 7-8psi all the time.

check the rb25det wiring diagram if you want re: ground and power wires

of course the best way is to get an aftermarket boost controller and just throw the factory one out. turbosmart can do bleed values for around $200, not sure how good they are.

idle time should probably be about 1-2 minutes, the apexi auto timer on an rb25det reckons 4:50 but that seems to extreme on normal mode, so 2 minutes should be ok

hope this helps

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