Tapping over 3k RPM's

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Jan 21, 2007 | 04:19 PM

1-Quik-LS1

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From: St.Pete, FLA

Tapping over 3k RPM's

well i have a 98 Z28 Camaro (LS1 of course) and for some reason just this morning when i rev/ or drive over 3,000 Rpm's i get a tapping noise? at idle there is no knocking or tapping, but only at 3k? what is this and what can be done i hope its not to serious??? please help me out with this im not the Internal genius.....
~thanks anthony

Jan 21, 2007 | 04:54 PM

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From: St.Pete, FLA

TTT help

Jan 21, 2007 | 05:59 PM

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From: St.Pete, FLA

TTT again i need answers

Jan 21, 2007 | 06:01 PM

brad8266

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From: Watertown, NY

bent pushrod maybe. When was your last oil change?

Jan 21, 2007 | 06:10 PM

1-Quik-LS1

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From: St.Pete, FLA

im 200 miles over an oil change theres no way thats the case, i also have weak oil pressure

Jan 21, 2007 | 06:12 PM

brad8266

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Quote:

Originally Posted by 1-Quik-LS1

im 200 miles over an oil change theres no way thats the case, i also have weak oil pressure

The weak oil PSI is not good, dont drive the car until you get it fixed. Is it leaking oil from anywhere? If it isnt leaking your oil pump may be going or you may be having bearing issues in the rotating assy. Do not drive it until you figure it out. Tapping and low oil PSI are indications of bearing failure or stretched rod bolts, which will result in you tearing the engine apart to replace, which in that case you may as well do a full rebuild.

Jan 21, 2007 | 06:15 PM

1-Quik-LS1

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From: St.Pete, FLA

Quote:

Originally Posted by brad8266

the weak oil PSI is not good, dont drive the car until you get it fixed. Is it leaking oil from anywhere? If it isnt leaking your oil pump may be going or you may be having bearing issues in the rotating assy. Do not drive it until you figure it out. tapping and low oil PSI are indications of bearing failure.

i was at my friends house and let the car sit for an hour or so ... no leaking anywhere on his driveway, ill have to get it checked out tomorrow, what is the WORSE and LEAST case scenario ???

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Jan 21, 2007 | 06:23 PM

1-Quik-LS1

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From: St.Pete, FLA

is a rebuilt even worth it?? should i just buy another ls1??

Jan 21, 2007 | 06:25 PM

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brad8266

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Quote:

Originally Posted by 1-Quik-LS1

is a rebuilt even worth it?? should i just buy another ls1??

Its worth it as long as you dont drive it and destroy the block first. Hone cylinders, keep stock crank, buy forged pistons and rings, rods, rod bolts, head gaskets, and a new set of crank and rod bearings. Thats pretty much your basic forged 347 righ there. Might as well cam it while your at it and do heads if you got some more $$.

Find out what your problem is first though.

Jan 21, 2007 | 06:34 PM

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From: St.Pete, FLA

ill find out tomorrow and ill get back to ya, thanks for the help

Jan 22, 2007 | 08:58 AM

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1-Quik-LS1

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From: St.Pete, FLA

well i found out i spun a bearing... so this means a complete rebuild or new engine any out put on what might be cheaper?

Jan 22, 2007 | 12:00 PM

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brad8266

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Quote:

Originally Posted by 1-Quik-LS1

well i found out i spun a bearing... so this means a complete rebuild or new engine any out put on what might be cheaper?

You can just replace the bearings for cheap, but you might as well go for a forged motor. You can get a TSP short block for a good price, but it will be cheaper for you to build the current block up with forged parts yourself. It depends if you want to rebuild it yourself or not. Good luck with it.

Jan 23, 2007 | 09:35 PM

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1999ssls1

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How did you find out you spun a bearing?

Jan 23, 2007 | 09:37 PM

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brad8266

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Quote:

Originally Posted by 1999ssls1

How did you find out you spun a bearing?

Usually when the oil PSI drops suddenly is either a bearing or the pump gone bad.

To actually see if its a spun bearing youre gonna have to pull the motor and tear it down. Pretty much time for a new forged shortblock since your in there anyway. It could very well just be your pump if you still have the old 98 pump in there, but with the tick noise id be worried.