Knocking when engine is cold?

[David Turbo6]

Hay guys i am just wondering if it is normal to have a small knock when the engine is cold?Once the engine is warmed up it's gone
Then again i don't drive the car a whole lot,maybe that doesn't help!
My car 87 Grand National,stock turbo,23 intercooler,3"downpipe,2800-3000 9"non-lockup trans,GN1 cold air etc

 

[Vince G]

a little knock is like a little pregnant, it will only grow with age

 

[David Turbo6]

....

l so your saying i should not really worry about it?

 

[williamsGN]

Is it rod knock or lifters pumping up on start ? I have 20/50 in mine and get a bit of rattle on start up occasionally.

What weight oil are you using ?

 

[David Turbo6]

Oil

Thank you William
i am using 10-30 oil with Tufoil, oil has about 200km on it
i sounds like the lifters
Maybe it would help to put bigger injectors and chip since the injectors are stock they were removed and cleaned about a 2 years ago

 

[David Turbo6]

....

So i think i should try 20/50 oil and take it from there before i get more pissed off?

 

[DR BOOST]

leave it alone and let the car warm up before you drive it.

 

[David Turbo6]

....

Have you guys ever put valvoline 20-50 racing oil?
Thanks

 

[vacuum 6]

Have you guys ever put valvoline 20-50 racing oil?
Thanks

That's was I run in my build 109.

I had a bit of startup knock. I installed a pre-luber and no more issues.

 

[williamsGN]

Thats what I use here in a warm climate. I've had 3 sets of lifters and the motor rebuilt once and I still get a lifter rattle when I start up occasionally. Not worrying about it anymore, I would skip the 20/50 if your driving in the cold at all.

 

[Mark E.]

Cam sensors can give a tick when cool. Wife's car did it for years. Finally swapped it out.