lifter noise on start up on new engine

[esm]

my old engine had the same problem on start up it would rattle then go away -and now on my new engine with new cam and lifters still does it on 1st start up then is fine ---- i have a turbo saver -- is that possibly the problem !!

 

[azbob]

Should not be a problem(turbo saver). Need to know some information:
What weight and type of oil, idle oil pressure cold, idle oil pressure hot, oil pressuere rise with rpm, oil pump clearances, time sitting between initial starts????

 

[esm]

sometimes it sits over night -it has at least 70 psi cold and 45 hot -- im using 10w 30 cause its a hydraulic cam --- been thinking about swapping in a roller to hopefully make noise go away

 

[esm]

sorry --- yes it rises with rpms --thanks

 

[NOKA72]

Positive your not hearing something in the lower end???

 

[mikestertwo]

What lifters are you using. A lot of aftermarket lifters will bleed down over time. Use GM lifters.

 

[TurboBuRick]

Comp roller lifters? They do bleed down.

Quality oil filter can help with better anti drain back features.

 

[QUIP'6']

my old flat tappet cam motor always did that and now my weber roller with morel lifters does the same thing. its just the lifters pumping up. i tried every filter out there with the same results

 

[turboclam]

Try a different name brand oil filter. Anti-drain

 

[esm]

i tried different filters and i made sure i used the gm lifters and it still there ---but it runs like a bat out of hell and only does on cold start up after it sit all night -- well thanks for the input ----i think ill live with the noise and hope its ok ---

 

[RegalT-type85]

A bit of Lucas HD oil will help quiet them down, MMO will do as well.

 

[esm]

thanks for all the info and help

 

[Turbo Loyd]

Look at the up and down clearance on the cam sensor shaft, particularly with the high cold oil pressure you posted. I've had a rattle in the cam sensor on start up in the GN for years. It could use a shim, but I figure the noise is harmless.

 

[skidman]

Lifter noise

I own an 87GN with 47K miles,rattles just for 1-2 seconds after cold start.
Never makes any noise warm. My 87 GN powered sand rail can sit for a month or longer and NEVER makes a sound. Go figure.Skidman.

 

[EVIL]

What if we were to have a crank sensor kill switch and did not activate it and turned the motor over a couple of times 5 to 6 seconds to pump some oil into the rotating assembly on a cold start?

I don't think it will harm the engine and oil will be pumped all over.

The starter should be fine too as long as you don't hold it for more than 6 seconds.

 

[QUIP'6']

i think it is normal especially when you have valves open and they eventually bleed down the lifter.

 

[esm]

it just drives me nuts because its all brand new and my old stuff did the same thing ----- i really dont think it hurting nothing and it doesnt do it after 1st start up ----