It's been a while since I posted on here. I made a progress thread a while back and haven't been on since really. I was so busy with school and work, the car sat on the back burner. It's been in the garage for almost a year now and not running. I decided it was time to get it going again. As a little refresher, the bottom end was built a while ago. 8.5:1 pistons, rods, bearings, 2.3l oil pump swap, the whole works. Recently I just had the head re-done. 2mm oversize SS valves, HO springs, HO retainers, port and polish, and a cometic gasket to go along with it. As for the cam setup, I have a HO intake and HO exhaust cam. I am running the 2.3L cam towers with 2.3L lifters. All parts were brand new btw. I got it all bolted together, started it up, and there is a loud ticking sound that sounds like it is coming from the intake cam, drivers side. I ripped the motor out thinking it was a rod bearing. Rod bearings looked perfect. Thought it was maybe defective lifters, so I got them replaced, put the motor back together, and the noise is still there. It gets louder as the RPM's increase. Once you get to a certain RPM range, it sounds as if something is slapping back and forth very fast. Almost as if a lifter isn't filling up the space between the valve and the cam. I don't really know. This will be the 4th time I will have to pull the motor this year alone. Anyone have any suggestions as to what this could be? I did use a pressure can to pressurize the system before i started it, so I know the lifters are pumped up. I let it run for over 20 minutes, and no change. I need help figuring this out! I am in desperate need of my car
2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R
clogged one way cheek valve in the block?
IDN, maybe Tom and I will take a run up some time.
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
I dunno what's up.....forgot to mention that oil pressure at the head is good. 75psi on startup and 50 after it warms up.
2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R
should of just left the s/c on it
ANSWER YOUR PHONE!!
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
Maken Waves wrote:should of just left the s/c on it
And what would that have accomplished?
Sorry Chris, had my phone in my jacket pocket. No wonder I haven't had any calls today!
2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R
2 easiest guesses are:
Bad (internally gummed up) lifter.
or
Cam lobe hitting the carrier. There are many different cam carriers out there and some (few but some) do not get along with .410 lift very well.
sig not found
protomec wrote:2 easiest guesses are:
Bad (internally gummed up) lifter.
or
Cam lobe hitting the carrier. There are many different cam carriers out there and some (few but some) do not get along with .410 lift very well.
Would you expect brand new Melling lifters to be gummed up? I bought all brand new ones and replaced 8 of the new ones with different ones already. Just wondering the likelihood. The second possibility is the cam hitting the carrier cover? Looks like I'll have to pull it again and take a closer look.
2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R
Luke Heier wrote:Would you expect brand new Melling lifters to be gummed up?
no
but there is a little one way check valve in there made of a tiny ball bearing and a spring. One small piece of gunk (old baked on oil that came loose, casting sand, etc... even on a fresh rebuild) can easily get caught in it and keep it from pumping up.
Edited 1 time(s). Last edited Sunday, June 15, 2008 8:15 AM
sig not found
And what would that have accomplished?
ya hybrids are good sorry.........
Quote:
And what would that have accomplished?
Maken Waves wrote:And what would that have accomplished?
ya hybrids are good sorry.........Quote:
And what would that have accomplished?
FAIL
2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R
sounds exactly like my motor when i started it, i bout cried, went and panicked, talked to some people, and just let it run for a bit more and it disappeared. sorry i cant really help, but ive experienced it, it just went away after i let it run for awhile.
Well I've had it running for at least 25 minutes all together and no change.
2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R
did you soak the lifters in oil before installing ?
1 could have a air bubble
Yup
2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R
bump
2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R
Found this on SI, tried to call.......
Upper Engine Noise, Regardless of Engine Speed
Cause
Correction
Low oil pressure
• Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing .
• Repair or replace as required.
Broken valve spring
Replace the valve spring.
Worn and/or damaged valve rotators
Replace the valve rotators as required.
Worn or dirty valve lifters
Replace the valve lifters.
Stretched or broken timing chain and/or damaged sprocket teeth
Set or replace the timing chain and sprockets.
Worn or improperly set timing chain tensioner, if applicable
Replace the timing chain tensioners as required.
Worn engine camshaft lobes
• Inspect the engine camshaft lobes.
• Replace the camshaft and valve lifters as required.
Worn valve guides or valve stems
Inspect the following components, and repair as required:
• The valves
• The valve guides
Stuck valves
Carbon on the valve stem or valve seat may cause the valve to stay open.
Inspect the following components, and repair as required:
• The valves
• The valve guides
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
sounds like something is loose in there.
pull the head off, and look for a small bolt stuck into the piston or head.........
SPD RCR Z -
'02 Z24 420whp
SLO GOAT -
'04 GTO 305whp
W41 BOI -
'78 Buick Opel Isuzu W41 Swap
SpeedRacerZ wrote:pull the head off, and look for a small bolt stuck into the piston or head.........
I'm pretty sure I didn't drop anything in there..
2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R
Thats what HE said.......
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
Either way I think. your gonna have to take it all back apart.
Did you reset the timing chain tensioner, that almost sounds like timing chain flopping around hitting the timing cover to me.
Dale Young wrote:Did you reset the timing chain tensioner, that almost sounds like timing chain flopping around hitting the timing cover to me.
You know I thought the same thing for a moment while I was listening to it. Sounded kinda like the timing chain. I remember specifically resetting the chain tensioner though.
2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R
