The relief valve on early turbo motors was a safety measure to prevent engine death and hence warrantee claims, however it is still a great idea for any engine. With the limited ability of early ECU to shut things down, ie limit advance, lessen fuel input etc if there was a problem with the wastegate or other area of the turbo then this valve would open when ever a preset boost was reached.
Fj's have em, the E15ET pulsar motors have em aswell. Most people just fill the hole with a plug or weld them up so that they cant open when they want to run more boost than standard. Chris Mark writes: > What is the function of the "trust relief valve" which I see screwed > into the thread of an Fj20T intake? Obvious guess would be to vent > excess PSI, so is this necessary in addition to the turbo waste-gate and > blow-off valve? ( I thought the waste-gate was the sole & adequate boost > limiting measure) If the engine has no electronic boost controller, nor > a 'bleed-valve' inline to wastegate is it possible for the boost to be > above the factory 7 PSI? > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
