Are There Lifter Clearances?

[stuartlaw_78]

RB25DET motor.....

Are there specific clearences between the hyd lifters and the cam lobes when installing?? If so, how do you adjust??

I don't think there are any clearences for these but I could be wrong..

[bogcock]

if your having clearance problems maybe your springs have too much sag

[stuartlaw_78]

Just getting tapping when cold but engine is only 13,000kms old... Same springs and recond hyd lifters so I'm thinking I've got a suspect lifter or 2...

Maybe a spring... only does is when cold though.... on idle and when the needle passes the 2grand mark, anything above 2grand, and no tapping....

What do you think?

[bogcock]

thick oil perhaps...

try thinner oil, and the lifters will bleed earlier...

all lifters tap on startup, because no oil pressure=no/less llift

[bogcock]

sorry back the front.... try thicker oil, as pressure will build earlier... is been a long nite, sorry..lol

[stuartlaw_78]

I understand what you're getting at but I've been using the same oil as soon as I caqme off of the running in oil.... It's the Motul 4100 Turbo light.... good stuff, I don't think it's the oil....

When I'm warming up the car and the needle is pretty much at operating temp (2/3 of the way up), the idle knock goes away but it will still do it right on 2 grand, but won't tap either side of it..

I do have forgies, could it be piston slap? I've never experienced piston slap so I'm not sure what it's supposed to sound like....

[ezi09s]

could be piston slap, if it does go away when warm, id bet on that.

bogcock was on the money if you had a stock internal setup, but forgies are renound for being loud when cold