ported oil pump, pressure dropped.
Thread Starter
On The Tree
Joined: Nov 2005
Posts: 100
Likes: 0
From: Arkansas
ported oil pump, pressure dropped. Well guys i just got done with my cam install and started her up. I went with the F14, it sounds awesome. Anyways, i installed the Futral ported LS6 pump and after the install my oil pressure dropped.
Before with the stock pump, at idle it used to be around 45psi steady.
Now with the new pump it gets down around 40psi or a little below when its all the way warmed up and idling. I know that pressure is still good pressure and is nothing to worry about but i am just curious if anyone else has had this happen and why it is?
also please check out my other post, i ran into a big problem with my speedometer and am in sever need of help thanks,
https://ls1tech.com/forums/pcm-diagnostics-tuning/465070-cam-install-speedo-stopped-working.html
Before with the stock pump, at idle it used to be around 45psi steady.
Now with the new pump it gets down around 40psi or a little below when its all the way warmed up and idling. I know that pressure is still good pressure and is nothing to worry about but i am just curious if anyone else has had this happen and why it is?
also please check out my other post, i ran into a big problem with my speedometer and am in sever need of help thanks,
https://ls1tech.com/forums/pcm-diagnostics-tuning/465070-cam-install-speedo-stopped-working.html
Thread Starter
On The Tree
Joined: Nov 2005
Posts: 100
Likes: 0
From: Arkansas
yeah im glad that i didnt run into that dreaded problem. Im glad that i have good oil pressure but it just seems a little odd to me.
But its weird, all of my friends that have fbodys and ybodys, their cars have always had around 40 or a lil below at idle, and mine has always stayed at least 45 at idle. I have never seen anothe fbody or ybody that had as good of oil pressure as mine did before...
Oh well i guees now my car is just average
But its weird, all of my friends that have fbodys and ybodys, their cars have always had around 40 or a lil below at idle, and mine has always stayed at least 45 at idle. I have never seen anothe fbody or ybody that had as good of oil pressure as mine did before...
Oh well i guees now my car is just average
thats what I'm concerned about also. I have (had) an aftermarket cam in my car with the stock pump and chain. My oil pressure was always around 50psi on warm idle and anything above 1500-2000 rpm would be about 60-65 psi. I'm re-doing the set-up including the oil pump with an SLP piece. I'm hoping I don't have the same thing happen.
I had this happen when I put in a Katech ported pump when I did my h/c on my vette. I used to have 35psi at hot idle (5W-30, oil temp ~210) Then it went to 30 at idle. It went up to over 70 at WOT so it wasn't a big concern. Then I redid my heads and rephased the cam. When I did that I pulled the oil pump and shimmed the pressure release valve spring ~.060". I picked up another 3psi at hot idle. I should have put .100"-.120" shimming in and then I would have had a bit more. I think the pressure difference is from the difference in spring pressure in each individual pump. The next time I pull the front cover I will shim it up to .100",
Also, are you measuring your oil pressure with a calibrated gauge or the instrument cluster? The cluster's are not known for their accuracy.
Also, are you measuring your oil pressure with a calibrated gauge or the instrument cluster? The cluster's are not known for their accuracy.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Originally Posted by Riddlerls1
yeah im glad that i didnt run into that dreaded problem. Im glad that i have good oil pressure but it just seems a little odd to me.
But its weird, all of my friends that have fbodys and ybodys, their cars have always had around 40 or a lil below at idle, and mine has always stayed at least 45 at idle. I have never seen anothe fbody or ybody that had as good of oil pressure as mine did before...
Oh well i guees now my car is just average
But its weird, all of my friends that have fbodys and ybodys, their cars have always had around 40 or a lil below at idle, and mine has always stayed at least 45 at idle. I have never seen anothe fbody or ybody that had as good of oil pressure as mine did before...
Oh well i guees now my car is just average
Thread Starter
On The Tree
Joined: Nov 2005
Posts: 100
Likes: 0
From: Arkansas
It is untuned... but it idle around 800 when it finally calms down. I didnt shim the oil pump, i think i will if i ever pull the cover off again.
Also what idle speed is everyone setting there cars at (with cams)
This cam sounds absolutely amazing, im in love with my car all over again. The only thing that i absolutely hate is that my speedo no longer works
Also what idle speed is everyone setting there cars at (with cams)
This cam sounds absolutely amazing, im in love with my car all over again. The only thing that i absolutely hate is that my speedo no longer works
On The Tree
Joined: Jul 2005
Posts: 139
Likes: 0
Originally Posted by Riddlerls1
yeah i guess it makes since, as amperage increases volts decreases and vice versa... hmm should have put my mind to it before lol
) i hope this helps, but i can't help with the speedo problem...
Originally Posted by Riddlerls1
It is untuned... but it idle around 800 when it finally calms down. I didnt shim the oil pump, i think i will if i ever pull the cover off again.
Also what idle speed is everyone setting there cars at (with cams)
This cam sounds absolutely amazing, im in love with my car all over again. The only thing that i absolutely hate is that my speedo no longer works
Also what idle speed is everyone setting there cars at (with cams)
This cam sounds absolutely amazing, im in love with my car all over again. The only thing that i absolutely hate is that my speedo no longer works
The drop in pressure is a good thing...
It means that there is more flow.
Bernoulli's Principle tells us that as the fluid flows more quickly the pressure actually decreases rather than increases!
Fun with physics, gotta love it.
It means that there is more flow.
Bernoulli's Principle tells us that as the fluid flows more quickly the pressure actually decreases rather than increases!
Fun with physics, gotta love it.
Thread Starter
On The Tree
Joined: Nov 2005
Posts: 100
Likes: 0
From: Arkansas
yup i remember that now. i am majoring in engineering, and have taken plenty of physics, i feel dumb for not thinking about it before 
I guess i was just so caught up in it that my brain was not working....
oh yeah and my speedo just decided to magically start working again today
I guess i was just so caught up in it that my brain was not working....oh yeah and my speedo just decided to magically start working again today
i have many mods and my gauge inside peaks at 40psi , it`s wack! i peak at 55psi with .003 mains and cooler, remote filter.
always use a mech gauge. high pressure doesn`t mean high flow.
always use a mech gauge. high pressure doesn`t mean high flow.
Originally Posted by GIGAPUNK
The drop in pressure is a good thing...
It means that there is more flow.
Bernoulli's Principle tells us that as the fluid flows more quickly the pressure actually decreases rather than increases!
Fun with physics, gotta love it.
It means that there is more flow.
Bernoulli's Principle tells us that as the fluid flows more quickly the pressure actually decreases rather than increases!
Fun with physics, gotta love it.