savageskaterkid Posted August 4, 2008 Share Posted August 4, 2008 My friend has a R33 RB25 in a 95 240sx with a N1 Oil Pump on it, the gauge started reading about 35 psi on idle and about 75psi with gas. Took it to a shop and its running about 75psi on idle now and about 100psi with gas. Seems alittle abnormal to me does it seem right? Quote Link to comment Share on other sites More sharing options...
Booztd 3 Posted August 4, 2008 Share Posted August 4, 2008 RB25/RB26 and Z32 oil pressure sending units are extremely prone to failure & low readings. The sending unit completely failed on my 26 setup, it reads 0 all the time now. I put a Defi Oil Pressure gauge on it and it was reading 90psi at 3k rpms, (which is correct) Quote Link to comment Share on other sites More sharing options...
savageskaterkid Posted August 5, 2008 Author Share Posted August 5, 2008 Seems as though the oil pressure was fine reading on here and a few other forums. Now we're having an overheating problem. One of the fans wasn't cutting on, so I went and rewired the fan, its working now. It takes longer to overheat, but it still does it. Everything seems upto spec. Are the RB's notorious for overheating for certain reasons? Quote Link to comment Share on other sites More sharing options...
Careless Posted August 5, 2008 Share Posted August 5, 2008 Seems as though the oil pressure was fine reading on here and a few other forums. Now we're having an overheating problem. One of the fans wasn't cutting on, so I went and rewired the fan, its working now. It takes longer to overheat, but it still does it. Everything seems upto spec. Are the RB's notorious for overheating for certain reasons? not on idle :-/ there are a couple of coolant mods. Quote Link to comment Share on other sites More sharing options...
savageskaterkid Posted August 5, 2008 Author Share Posted August 5, 2008 Been looking and the FSM isn't available through carfiche at the moment. But I have read that the coolant bleeder valve is located on the intake? What if its a Greddy intake? Is the bleeder valve used on that as well, or is it obsolete? Quote Link to comment Share on other sites More sharing options...
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