my RB25DET is making a real loud noise can anyone help me??????????????????????

Discuss the RB20, RB25 and RB26 series engines.
ilmyer15
Posts: 9
Joined: Thu Sep 11, 2008 7:12 pm
Car: nissan 240sx with RB25DET swap

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in the front of my motor were the belts are they are sweaking really loud and i dont know what it is and when i spray some lube on it goes away but then comes right back can anyone help me figure out what this is?????????


240z4u
Posts: 2071
Joined: Mon Feb 21, 2005 4:47 am
Car: '95 Nissan 240SX

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If you spray crap on there and it goes away its a belt.

If it has been squeaking for awhile, likely that belt is shot and glazed. You have to almost overtighten the alternator belt... run it for a day and retighten after it stretches.

If you can't figure this out your headed down a long road of despair!

Evan

C33_RB20DET
Posts: 30
Joined: Wed Sep 10, 2008 6:02 pm
Car: Nissan Laurel Medalist C33

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yes i agree..it sounds like a belt and more than likely the alternator belt...same thing happened to me..the belt was shelled on the inside i think i the size i bought for the alternator was 840..cant remember the brand tho...you should try that... let us know if the problem is gone after the belt change....btw if its the alternator belt it would act up more at night because of the use of more current..lights..ac ...radio etc...


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