Lifter Noise VZ Senator, Worn Cam Bearings

I took my car in to get a bigger Cam put in, ORT intake and a dyno tune, got it back and started ticking straight away. Everywhere i took it to said it was a collapsed lifter. It actually turned out to be because of low oil pressure where the lifters weren't receiving enough oil and not working properly. This was due to very worn cam bearings. I have since had the engine rebuilt and is running great. But the rebuild was not cheap..

Category:

Autos & Vehicles

Tags:

• Ticking
• Lifters
• Noisy
• Cam
• Bearing
• Engine
• V8
• Senator
• VZ
• Commodore
• Hydraulic
• high rev engine
• custom

[Camdingo4]

Yeah this was constant, whether the car was warm or not. I've had the engine rebuilt since then with roller hydraulic lifters and roller rockers and ticks a little bit before it completely warms up.

I had a similar problem in my old VY Clubsport, and my mate had a ticking engine in his VY SS too, but both didn't have any modifications besides exhaust. I think a bigger cam can increase the audible noise. Did you get your lifters changed when the cam was done?

[starionnsw]

i think a old,used oil pumps can hold air i seen a statment recently that reminded me about a time long a go. the statment said pack the ---- out the pump with vassaline and it ring's true for me on used pumps's i,e oil change or any mod work . sine i last text i ordered an new pump , as i couldnt find any pic's of oil pump's & when i pulled my pressuer releas spring & couldnt find a bb or piston head on the spring ? savartarge !!! dose any one have link's too pic's of oil pump's diagrames

[starionnsw]

@304runner i park my 5lt for a year then regoed it drove about 4hr max - will a year parked gunk up an engine

oil presher droped noted it has that really awsome oil pick up like the v6 commondore

will the pick up if clocked fine tuen too the point were preash lite's out but is obvisoly low @ rockers

[starionnsw]

isnt it the 2nd clyder ex liter fail only when theres oil pressue problems

[304runner]

@starionnsw Translate please!

[starionnsw]

cyl 2 on my vp is was clicking miss fireing and colasped zero the oil pressue did the change over

now flows oil but "not seem" to rise or rock the rocker is ? going to be a b&r

do you think

may have been morery's in the oil befor hand causeing fin oil to leave collapes ? any opinion be helpful

[Onyx2316]

No the lifters were not changed only cam, springs and push rods. The ticking (clacking) sound is only heard after the motor is at operating temp and only after the motor has pulled to about 4000rpm then come back to idle, never when cold so based on the info I've read at lstech.com I'm starting to think they may have pinched or re-used the oil pump pickup O ring which is causing the oil to foam and not circulate at higher rpm. I'll let you know how it pans out.

[Onyx2316]

Hey there, have a VY SS that has a similar tick after doing the cam, valve springs and pushrods although it only happens now and then. On your Senator was the noise constant?