need help RATTLING TAPPING NOISE - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

[email protected] · 01-13-2012, 04:05 PM

I got s14 SR with built block CP pistons Eagle rods
ACL main / rod bearings bored block .20 over with apexi
head gasket, ARP rod bolts Arp headstuds and now car is making a rattling
knocking noise. I looked at the rocker arms and shims
and they are in place but don't know wat caused the problem
or wat is the problem so any info will be appreciated

Thanks for reading, hope someone knows the result
or has any experience on a problem like this

[email protected] · 01-13-2012, 05:20 PM

Any one bump

GroundPerformance · 01-13-2012, 05:32 PM

Hopefully it's just the VTC Solenoid or Chain Tensioner. If not those, I sure hope the crank are properly measured or even machined to rock those ACL bearings. I've seen plenty of builds using aftermarket bearings on virgin crankshaft fails "spun bearing" even before 1k miles of break in period. GL!

Killa_D · 01-13-2012, 05:33 PM

i say vtc also its common problem...

Davidna2fi · 01-13-2012, 05:51 PM

Can you push down on the rocker arms and they move? If so, the hydraulic lash adjusters were not bled and need to be rebled...which means removing cams and resetting timing. Easy test to see if it is an oiling problem is the just spin engine over without CAS plugged up and look inside oil cap area to see if oil is coming from the oiling rods over the cams. Check oil to head first, then rule out lash adjusters, then last thing would be VTC, if chain is tight.

01-13-2012, 04:05 PM	#1
[email protected] Leaky Injector Join Date: Apr 2011 Location: FL Age: 35 Posts: 74 Trader Rating: (1) Feedback Score: 1 reviews	need help RATTLING TAPPING NOISE I got s14 SR with built block CP pistons Eagle rods ACL main / rod bearings bored block .20 over with apexi head gasket, ARP rod bolts Arp headstuds and now car is making a rattling knocking noise. I looked at the rocker arms and shims and they are in place but don't know wat caused the problem or wat is the problem so any info will be appreciated Thanks for reading, hope someone knows the result or has any experience on a problem like this

01-13-2012, 05:32 PM	#3
GroundPerformance Zilvia FREAK! Join Date: Oct 2008 Location: Socal Posts: 1,477 Trader Rating: (44) Feedback Score: 44 reviews	Hopefully it's just the VTC Solenoid or Chain Tensioner. If not those, I sure hope the crank are properly measured or even machined to rock those ACL bearings. I've seen plenty of builds using aftermarket bearings on virgin crankshaft fails "spun bearing" even before 1k miles of break in period. GL! __________________ SoCal KA24DET/KA24ET Owners << Join the FB Group >>

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01-13-2012, 05:20 PM	#2
[email protected] Leaky Injector Join Date: Apr 2011 Location: FL Age: 35 Posts: 74 Trader Rating: (1) Feedback Score: 1 reviews	Any one bump

01-13-2012, 05:33 PM	#4
Killa_D Zilvia FREAK! Join Date: Nov 2006 Location: nowhere Posts: 1,463 Trader Rating: (39) Feedback Score: 39 reviews	i say vtc also its common problem...

01-13-2012, 05:51 PM	#5
Davidna2fi Zilvia Junkie Join Date: May 2008 Location: Houston, TX Posts: 513 Trader Rating: (18) Feedback Score: 18 reviews	Can you push down on the rocker arms and they move? If so, the hydraulic lash adjusters were not bled and need to be rebled...which means removing cams and resetting timing. Easy test to see if it is an oiling problem is the just spin engine over without CAS plugged up and look inside oil cap area to see if oil is coming from the oiling rods over the cams. Check oil to head first, then rule out lash adjusters, then last thing would be VTC, if chain is tight.