rb25 lost oil pressure....new 26 pump

Discuss the RB20, RB25 and RB26 series engines.
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as240
Posts: 40
Joined: Sat Dec 26, 2009 2:11 pm
Car: 1996 S14 SE
1992 HB Rb25
Location: Austin, Tx

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So last night my turbo started making a sort of zipping humming noise. Its the same noise that the old turbo made when it was ran on low oil pressure. Is that what they sound like when they are going out? Its a series 2 turbo with a series 1 wastegate if that makes any difference


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LSDrift
Posts: 200
Joined: Wed Apr 19, 2006 4:54 am
Car: 1990 RS13 RB25

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as240 wrote:im not one of those ls1 guys that just lays into the rev limiter..i know how to my my foot and brain in unison
http://www.flickr.com/photos/8410334@N04/5510927747/

the new motor is in with another new 26 pump. everything is great so far. ive already put about 100 miles on it and changed the oil and filter twice.
what is normal oil pressure for a rb26 pump at wot? my oil pressure his 90+psi with ease.
idling at about 900rpm the pressure is about 35psi and when cruising at 2800rpm the pressure is around 65-70 psi.
does anyone know if those pressures sound correct? they seem a little high to me, but i may just be used to my old rb25 pump.
thanks again for the input everybody.
Hahahahahaha @ the LS1 guys comment...wittyness like that cracks me up and is one of the reasons I love reading good discussions on this forum haha. This will now be quoted in my signature haha.

Cjmartz2k
Posts: 1845
Joined: Sat May 19, 2007 1:39 pm
Car: Hunting for a '89 GTR now
Location: Okinawa, Japan

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as240 wrote:So last night my turbo started making a sort of zipping humming noise. Its the same noise that the old turbo made when it was ran on low oil pressure. Is that what they sound like when they are going out? Its a series 2 turbo with a series 1 wastegate if that makes any difference
Is this the same turbo that was on when the motor died? If so, I'm sure it was starved of oil same as the rest of the motor.

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as240
Posts: 40
Joined: Sat Dec 26, 2009 2:11 pm
Car: 1996 S14 SE
1992 HB Rb25
Location: Austin, Tx

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no, this is the turbo that came with my new longblock. about 45k on the motor that i just put in


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