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11-14-2010, 08:59 AM
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#1
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Join Date: Oct 2006
Posts: 929
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tapping..
ok so as some of you know my motor has a little 'tapping' coming from the top end. Happens when its cold, then quiets for a little bit then when the motor is at operating temperature it comes back and its noticeable at all rpms.
lifters and cam have all of 1k on them. oil is full and still clear. its coming from the drivers side cyl 3/5. there is no power loss or anything, ive adjusted them several times and using stock rockers. this problem was there with the old cam/lifters so they were replaced but its still there.
Im thinking the moron who cleaned the block didnt do a good job and a oil passage is restricted or something. if no one has any ideas im just gonna wait and beat it up til it blows and get a 350 and be done with it. haha
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1986 IROC-Z - 305- .030 over, Voodoo cam, 113 vette heads, tpi, hedman torque steps, GMMG 3in catback, custom chip, t56, 3.27s 9 bolt, rest of the car is stock.
2011 Camaro - 2lt/rs red jewel tincoat, m6 - SOLD
2014 Camaro SS - bolt ons
1998 Jimmy - the beater
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11-14-2010, 10:25 AM
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#2
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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try taking a screwdriver and probing around listening for the noise through the end of it. should help narrow it down to top end or bottom end.
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11-14-2010, 06:13 PM
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#3
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Join Date: Oct 2006
Posts: 929
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its top end. already did that trick. the motor was down 2 quarts of oil as well, its better now but when its hot its still a very loud ticking/tapping. i only put 600ish miles on the oil change this summer.
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1986 IROC-Z - 305- .030 over, Voodoo cam, 113 vette heads, tpi, hedman torque steps, GMMG 3in catback, custom chip, t56, 3.27s 9 bolt, rest of the car is stock.
2011 Camaro - 2lt/rs red jewel tincoat, m6 - SOLD
2014 Camaro SS - bolt ons
1998 Jimmy - the beater
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11-14-2010, 07:38 PM
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#4
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Join Date: Jul 2010
Location: Somerset,NJ
Posts: 585
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how does it look when the valve cover is off and the car is on?
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11-15-2010, 05:42 PM
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#5
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Join Date: Oct 2006
Posts: 929
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havent pulled the cover yet... its a pita because of the alt clearance (have to disconnect alt/batt) im really not expecting much under it because last time it was ticking everything was fine and the valves were tight. the noise did go away for about 100 miles then it came back.
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1986 IROC-Z - 305- .030 over, Voodoo cam, 113 vette heads, tpi, hedman torque steps, GMMG 3in catback, custom chip, t56, 3.27s 9 bolt, rest of the car is stock.
2011 Camaro - 2lt/rs red jewel tincoat, m6 - SOLD
2014 Camaro SS - bolt ons
1998 Jimmy - the beater
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11-16-2010, 09:41 AM
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#6
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Did you check your pushrods before reinstall?
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11-16-2010, 10:47 AM
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#7
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Join Date: Oct 2006
Posts: 929
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they looked good when they were out. didnt have any wear patterns or anything on them.
__________________
1986 IROC-Z - 305- .030 over, Voodoo cam, 113 vette heads, tpi, hedman torque steps, GMMG 3in catback, custom chip, t56, 3.27s 9 bolt, rest of the car is stock.
2011 Camaro - 2lt/rs red jewel tincoat, m6 - SOLD
2014 Camaro SS - bolt ons
1998 Jimmy - the beater
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11-16-2010, 09:50 PM
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#8
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Join Date: Nov 2004
Location: Randolph
Posts: 198
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Quote:
Originally Posted by Iroc-z86
they looked good when they were out. didnt have any wear patterns or anything on them.
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Did you roll test them on a flat surface...sheet of glass, etc.? Hard to check for bent pushrods visually otherwise.
Bent pushrods cause ticking noise. They flex and unload the lifter.
If you have a trashed rocker that will cause noise also. Worn out trunnion, or galled surface at the valvestem contact patch.
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1982 Z28 w/ '01 LS1 + T56, TR224 cam, Katech oil pump, JWIS chain
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11-17-2010, 08:18 PM
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#9
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Join Date: Oct 2006
Posts: 929
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yes i did the roll test to all of them. they are chromoly if that makes a difference. the builder put them in because he wanted the motor to be bullet proof, it also has chromoly piston rings. not sure on the internals, stock i think or at least stock style.
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1986 IROC-Z - 305- .030 over, Voodoo cam, 113 vette heads, tpi, hedman torque steps, GMMG 3in catback, custom chip, t56, 3.27s 9 bolt, rest of the car is stock.
2011 Camaro - 2lt/rs red jewel tincoat, m6 - SOLD
2014 Camaro SS - bolt ons
1998 Jimmy - the beater
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11-17-2010, 10:45 PM
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#10
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Join Date: Oct 2006
Posts: 929
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you can hear the tapping on the drivers side. mind you this is the quietest it gets, and this is after adding 2 quarts of oil and the car being warm, not hot.
__________________
1986 IROC-Z - 305- .030 over, Voodoo cam, 113 vette heads, tpi, hedman torque steps, GMMG 3in catback, custom chip, t56, 3.27s 9 bolt, rest of the car is stock.
2011 Camaro - 2lt/rs red jewel tincoat, m6 - SOLD
2014 Camaro SS - bolt ons
1998 Jimmy - the beater
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11-18-2010, 11:02 AM
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#11
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The Mayor / 2009 Member of the Year / Moderator
Join Date: Jan 2005
Location: Northwest
Posts: 8,867
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Sewing machine mod
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1995 Z28 Convertible A4 13.78 @ 100 (CAI, high flow cat, catback, 160 thermo, hypertech, Strano springs, Koni yellows, sway bars, 3 pt. UMI SFC)
2018 Sea Doo GTX - 3 cylinders and das boooooost
Quote:
Originally Posted by BonzoHansen
Is English your 2nd language? Did you graduate high school? Your posts make my head hurt.
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