loud tapping goes with the rpms PLEASE HELP
TECH Addict
Joined: Dec 2001
Posts: 2,907
Likes: 1
From: Bergen County, NJ
Let's assume for the moment that it's not a spun bearing. What have you done to the engine that you wanted it tuned. Give us some info on the car, mods, and the nature of the tap - heavy thump, light tap, does it go with RPM or at 1/2 RPM
Im in the same boat, i emptied the oil in my catch can today and it it looked like a cloudy brown and reaked of gass. So i changed my oil and it smelled like gass but still had an oil consistency. I too have developed a tap over the past few weeks that i thought was an exhaust leak. Here in the next couple weeks im going to have new headers and a td's built, air deleated. If the tick is still there my next step is to pull the heads, get better heads, lifters, pushrods, cam, and check my rings because im still untunned so maybe the rings are washed. What do you all think? 
it is a ls2 with ls6 heads ported and polished with 205 160 valves milled 20 thousanths with a 238 242 comp cam on a 113 lsa with 3 degrees advance.it was fine driving it there and when i left then when i got on it and took to about 6500 rpms and as soon as i got home i started to here the tapping.it is a loud tapping that gets a little quiter when i rev it up but you can still hear it.
Originally Posted by Billf6531
Drain two quarts of oil. Did your oil pressure change?
Originally Posted by fstls2camaro
it is a ls2 with ls6 heads ported and polished with 205 160 valves milled 20 thousanths with a 238 242 comp cam on a 113 lsa with 3 degrees advance.it was fine driving it there and when i left then when i got on it and took to about 6500 rpms and as soon as i got home i started to here the tapping.it is a loud tapping that gets a little quiter when i rev it up but you can still hear it.
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Originally Posted by V6 Bird
Not true. One bearing is hard to tell on the oil pressure gauge. haah
Heres a clip of a car with a spun bearing:
http://www.youtube.com/watch?v=z3sdg_0ksjs
Pretty noticable, but just because you car doesn't sound like this doesn't mean its not a spun bearing...although if it is the other bearings wont be getting lubed like they should and they may fail too...in which case you would definatly see low oil PSI
http://www.youtube.com/watch?v=z3sdg_0ksjs
Pretty noticable, but just because you car doesn't sound like this doesn't mean its not a spun bearing...although if it is the other bearings wont be getting lubed like they should and they may fail too...in which case you would definatly see low oil PSI
Originally Posted by fstls2camaro
what would it be that when i rev it up it gets a little quiter and when i drive it it is a constant tapping and there is no screeching noises?
A spun bearing doesnt mean it is going to have low oil pressure, like others have mentioned. Having said that, if you do have low oil pressure, this is usually the time a bearing would spin.
Taking it to 6600 with the modifications that you have should not have damaged anything as long as it was not there for an extended period of time. Could it be possible that it has been there and you just now have noticed it after revving the motor like that?
Taking it to 6600 with the modifications that you have should not have damaged anything as long as it was not there for an extended period of time. Could it be possible that it has been there and you just now have noticed it after revving the motor like that?