rb20det problems

Discuss the RB20, RB25 and RB26 series engines.
sileightty
Posts: 3
Joined: Thu Sep 13, 2007 10:52 am
Car: 1989 nissan sileighty
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my rb20det s13 will not hold a rev, it sounds like the turbo will build pressure then drop off, it has no problem doing a brake stand but normal driving sux


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nizmo zilvia
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Joined: Thu Jul 07, 2005 5:09 pm
Car: 95 240sx w/ S14 SR20 Blacktop

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Chances are you have a leak in one of your couplers. Take a look.

sileightty
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Joined: Thu Sep 13, 2007 10:52 am
Car: 1989 nissan sileighty
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i only have a very mall pin hole leak in my cold pipe

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nizmo zilvia
Posts: 751
Joined: Thu Jul 07, 2005 5:09 pm
Car: 95 240sx w/ S14 SR20 Blacktop

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Fix it then see if you get the same results. Take another look at your couplers. One thing people do is over look how tight the clamps are.

sileightty
Posts: 3
Joined: Thu Sep 13, 2007 10:52 am
Car: 1989 nissan sileighty
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the last turbo i had on the rb spit some oil into my intercooler so any boost leaks i have now are pissing oil or have some oily residue

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BoostFab
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Joined: Wed Dec 03, 2003 8:23 am
Car: S13cp, S13fb, S14z
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sileightty wrote:i only have a very mall pin hole leak in my cold pipe
that's probbly cause your pipes not holding the pressure


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