Charge releive valve??
09-21-02, 11:34 AM
#1
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Charge releive valve??
Hey guys, me and puma are doing the sillicone hose job on a 93 FD.. But, My question is, do the charge releive valve opens on the vaccum or on the boost ?
Thanks for a fast answer guys
Max
Thanks for a fast answer guys
Max
09-21-02, 02:41 PM
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Originally posted by ejmack1
CLosed on boost, open on vacuum... just like your ABV
CLosed on boost, open on vacuum... just like your ABV
If you vent it to the atmostphere, you can hear it let air out like a big boost leak, then when you got WOT, it will close and you won't hear the CRV anymore!
09-21-02, 08:00 PM
#4
Senior Member
errr not quite.
Open at idle. Shuts closed above 4500rpm and then re-opens below 3250. It's that simple. If you pull it off the airbox and go for a blast you'll hear it rushing madly from 3500 to 4500 (pre-spool) and then promptly shut the hell up. It is just a BOV that has vacuum/pressure switched onto it by a 3-port solenoid. It is phsycally and functionally interchangeable with the ubiquitous Bosch BOV.
(Avoid the metal/metal Nippon Denso's (late 80's supras) as they sieze regularly. The plastic/plastic ND's leak under boost (eg Celica GT4)
-pete
Open at idle. Shuts closed above 4500rpm and then re-opens below 3250. It's that simple. If you pull it off the airbox and go for a blast you'll hear it rushing madly from 3500 to 4500 (pre-spool) and then promptly shut the hell up. It is just a BOV that has vacuum/pressure switched onto it by a 3-port solenoid. It is phsycally and functionally interchangeable with the ubiquitous Bosch BOV.
(Avoid the metal/metal Nippon Denso's (late 80's supras) as they sieze regularly. The plastic/plastic ND's leak under boost (eg Celica GT4)
-pete
09-22-02, 12:27 AM
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Originally posted by rpm_pwr
errr not quite.
Open at idle. Shuts closed above 4500rpm and then re-opens below 3250. It's that simple. If you pull it off the airbox and go for a blast you'll hear it rushing madly from 3500 to 4500 (pre-spool) and then promptly shut the hell up. It is just a BOV that has vacuum/pressure switched onto it by a 3-port solenoid. It is phsycally and functionally interchangeable with the ubiquitous Bosch BOV.
(Avoid the metal/metal Nippon Denso's (late 80's supras) as they sieze regularly. The plastic/plastic ND's leak under boost (eg Celica GT4)
-pete
errr not quite.
Open at idle. Shuts closed above 4500rpm and then re-opens below 3250. It's that simple. If you pull it off the airbox and go for a blast you'll hear it rushing madly from 3500 to 4500 (pre-spool) and then promptly shut the hell up. It is just a BOV that has vacuum/pressure switched onto it by a 3-port solenoid. It is phsycally and functionally interchangeable with the ubiquitous Bosch BOV.
(Avoid the metal/metal Nippon Denso's (late 80's supras) as they sieze regularly. The plastic/plastic ND's leak under boost (eg Celica GT4)
-pete
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