Resolved New lifters still ticking.

[moto x]

I bought new lifters ans installed them when I rebiult my engine. Its ran for about 45 minutes total mosty 1k RPM'S still ticking. How long does it normally take to stop ticking? It was alot worse when I first started it. It got quiet a bit better but not perfect.

 

[Pursuit]

I bought new lifters ans installed them when I rebiult my engine. Its ran for about 45 minutes total mosty 1k RPM'S still ticking. How long does it normally take to stop ticking? It was alot worse when I first started it. It got quiet a bit better but not perfect.

Did you rev the engine !? becouse when i change my lifters and they start to ticking on idle.And i rev the engine few time and everything go fine.

 

[ROOKIE1]

Did you bleed them or just open and install ? Lifter VFAQ

 

[turboglenn]

I"ve had brand new ones tick just as bad as old ones. Asong as they pump up by about 12-1500RPM i'm happy. SeaFoam in the oil and run through the engine's intake helps with lifter tick too, but you said yours is a fresh build so that doesn't make sense for them to be dirty already.

When i built my last motor i took a box with about 5 heads worth of lifters and sat and swapped them all in and out for the quietest ones using a mechanics stethescope and a screwdriver, It's a mix of a bunch of the ones with the larger holes in them but the motor is about the least "ticky" of any mitsu motor i've messed with

 

[moto x]

It doesnt go away with any reving. and yes i did blleed them.

 

[absolute_DSM]

Are they 3g lifters or just stock lifters?

 

[somdturbo]

Old school mechanic trick of mine. Soak lifters (new or old) in a quart of new oil, completely sumerged in the quart. We usually leave it overnight or at least for a couple hours. This helps eliminate air pockets in the lifters oil gallery. This quiets stock lifters quite a bit as well.

 

[HIGHPSI4]

If you have a built engine you may have some piston skirt slap that sounds like lifter tick. I had a built engine that would not stop ticking. I replaced the lifters with known good ones. That did not cure it. Replaced the head with a good one, no help. Turns out the piston to wall clearence was too small and the skirts were slapping.

 

[moto x]

What did you end up doing?

 

[FlyByNight]

Turns out the piston to wall clearence was too small and the skirts were slapping.

Piston slap is resultant from too great of a clearance between the piston and cylinder wall. The extra room allows the piston to rock in its bore, thereby slapping the piston skirt against the cylinder wall. The shorter the piston skirt, the more likely this will occur.

 

[spawn7037]

Did you get 3rd gen lifters?

 

[absolute_DSM]

Are they 3g lifters or just stock lifters?

Did you get 3rd gen lifters?

Tried that... It sounds like the usual lifter tick.

 

[moto x]

they are 3g lifters. I had a know good machine shop do the boreing honing to the block so I dont think that is it.

 

[ROOKIE1]

Are sure its lifter tick ? How many miles on car ? What else is new in head ? On my car , I had a stg2 SBR head , new lifters also . Still had the tick . Someone had told me that the lobes on the camshafts wear down (flat spots) . So I got new ones , tick gone .

 

[Defiant]

Somewhere in the morass of Olde Posts, is a tale of new lifters taking as much as 500 miles or two weeks to quiet down.

Give them some run-in time.