What is this noise!!!!!

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02-09-13, 06:48 PM

a96beretta

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What is this noise!!!!!

just got back from tuning and i noticed this noise, only happens sometimes and only off of idle, still revs to 7500 and makes power

91 rx7 engine noise - YouTube

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02-09-13, 10:06 PM

misterstyx69

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why do you only have ONE belt running the alternator and water pump?
sounds like belt backlash.

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02-10-13, 12:14 AM

a96beretta

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currently that is the only belt i have and tomorrow im going to check that but it doesn't seem to sound like that to me, hopefully im wrong

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02-10-13, 03:10 PM

a96beretta

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ok, so it was the belt, thank god

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02-10-13, 03:36 PM

misterstyx69

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Find a dual alternator pulley and put 2 equal sized belts on then.
That is what they do when they delete the air pump.
It is actually a good thing to do as #1: it is a security that if one belt breaks the other still provides to the pump and alternator.
#2 is it prevents the Water pump and alternator from slipping.

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