low oil pressure/lifter noise at startup

[jakeb]

I have had my m50 swap going for a few months and I have noticed recently that after sitting all night when I start it the oil light take about 3-4seconds to turn off and the lifters are very noisy. After this is quiets right down. Once and a while it will rev to just below 2k and then settle to a nice idle.

It runs fine...no issues other than that.

Stock m50 with a TMS chip.

jake

[416stroker]

Id buy a mechanical oil pressure gauge. Fuck an idiot light.

[jakeb]

well I know it has pressure....it just takes more than it should to build up. Also there is lifter noise for those few seconds. Should i worry about it....

A dummy light is fine....it tells me there is a certain psi. A oil pressure gauge can have an issue as well...

[EtaSport]

Mine tends to do the same. What weight oil are you using and whats the outside temps like? This could also be due to a bad check valve in the cylinder head (non return/drain valve)

[jakeb]

10/30 oil I believe. It is getting colder....I am in MI.

[mattdk318i]

Both of my DOHC's rattle just a bit when i first start them jake. Ones got 100k and the other has 130k.
It worried me too, but i think its just par for for the coarse.

[jakeb]

alright, then I won't worry about it. thanks

its just an m50..... reason for a build up

[mattdk318i]

thats kind of what im thinking too. Of coarse its not a diesel rattle or anything like that.... But i figure if one goes out it might ruin the cams inadvertantly....and i might just have to buy new ones.... :P