filter cause of my problems

[SuperBusa]

Originally Posted By: silvergoat
LS2 prior to 07 used a bypass in the oil pan- from what I read.

How does this apply? What is the difference?

I don't mean to sound ignorant, but I really don't know as much as I should- we all have to start somewhere.


It means you are stuck with whatever the built-in GM filter bypass valve is set to. I believe I read on the Vette boards that it's set to ~ 8 psi.

As Gary said above, I've never really read of anyone modifying it or buying an aftermarket replacement with higher bypass setting. It's possible they exist though. A Google or Bing search might find something.

 

[SuperBusa]

Originally Posted By: OVERK1LL
Originally Posted By: SuperBusa
Originally Posted By: OVERK1LL
The LSx engines have a LOT in common with the SBF (Windsor) engine, I would be VERY surprised if any of the LSx engines used an in-block bypass.


My 2002 LS6 in Vette Z06 definitely does use the in block filter bypass valve.


Then colour me very surprised

I assumed they would not carry it over from the older SBC, given that they have next to nothing in common.


Yep ... all the oil filters I've ever used on it (WIX, NAPA Gold, Amsoil, ACDelco, Purolator) do no have any bypass valve in them. You look right down the center tube and see the can dome on the other end.

 

[OVERKILL]

Originally Posted By: silvergoat
lower viscosity or more viscosity.....which is the answer?

it sucks if lower viscosity is the answer b/c I will have a full case of very high viscosity redline oil just sitting around.

that, and finding low viscosity/high HTHS oil is difficult



Well, the answer in all the high performance cars seems to be increased viscosity.

For example, Ford specs 5w20 for the Mustang GT, but the much higher HP GT500 specs 5w50.

 

[SuperBusa]

Originally Posted By: silvergoat
lower viscosity or more viscosity.....which is the answer?

it sucks if lower viscosity is the answer b/c I will have a full case of very high viscosity redline oil just sitting around.

that, and finding low viscosity/high HTHS oil is difficult



You could go with a specialty "racing filter" that is designed to flow much better without creating much PSID across the filter. You'd probably be giving up some filtering performance, but if you changed oil often it might be just fine.

 

[silvergoat]

so then the Red Line 5w-40 is a good choice

I have a feeling I will like this oil- very high HTHS number and very viscous, it will fit perfectly.

thanks- btw, what is PSID short for?

 

[SuperBusa]

Originally Posted By: silvergoat
so then the Red Line 5w-40 is a good choice

I have a feeling I will like this oil- very high HTHS number and very viscous, it will fit perfectly.

thanks- btw, what is PSID short for?


PSID = PSI Differential. Same as saying "pressure drop" or "delta pressure" or "pressure difference".

It's the pressure difference in PSI across a filter due to the flow through it.

 

[Gary Allan]

Originally Posted By: silvergoat
lower viscosity or more viscosity.....which is the answer?



Journal bearing 101 for the engineering challenged, like myself. It's hosted by some resident upper strata engineers.

https://bobistheoilguy.com/forums/posts/1335343/