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View Full Version : Oil pressure woes. Only when braking.


94ndta
07-04-2013, 02:11 PM
I'm thinking I'm having an oiling issue. I have been taking it easy on the car since the h/c swap and haven't really had any issue with it. It currently has 80 miles on it with the new set up. When the car starts up, it holds pressure just fine, right around 45psi, when it warms up to operating temp, it idles around 20psi but when I brake hard, it drops down to ~10 psi. Im running conventional 10 w30 before switching it back to synthetic with a larger oil filter. I do have a small dent in the pan, it is not low on oil. I'm trying to figure out what would be causing this. Maybe the pick up is partially clogged? I think the psi is normal except for dropping that low when I brake. I have not taken it to wot yet, still taking it easy.

has anyone had this issue? Any ideas?
Chris
07-04-2013, 02:33 PM
The pick up has probably fallen off. Happens all the time

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Chris
07-04-2013, 02:34 PM
Hit the pan with your hand and see if you hear it clank

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94ndta
07-04-2013, 02:40 PM
Oooohh....that would be awesome if that happened. I will give her a look. Do I need to drain the oil?
popo8
07-04-2013, 06:52 PM
Yes... Draim the oil...


Smack the pan with ur fist... Odds are u will hear it bounce in there.

FIX = Pull pan...re install...tack weld in place.

Co-Owner/Admin @ LTXtech.com
Sahara54
07-04-2013, 06:53 PM
You would have to pull the pan, which in the car sucks. I'd replace the spring with a 70psi spring and put on a pickup tube hold down. If you don't have a welder

http://www.jegs.com/i/JEGS+Performance+Products/555/23621/10002/-1

http://www.speedwaymotors.com/Chevy-High-Pressure-Oil-Pump-Spring,702.html
FastLT1
07-04-2013, 07:12 PM
I bought a LT1 off of craigslist and once we got it on an engine stand, we turned it over and heard a huge clunk. I thought it might've had a grenaded bottom end lol. Turned out to just be the pick up tube had fallen off. Will definitely be welding it before it go's back in
firebird_1995
07-05-2013, 01:26 AM
While changing the oil pump isn't necessary, this is another option
http://www.summitracing.com/parts/ses-3-60-08-003
Comes with the high pressure spring installed, pickup tube welded on, hardened drive rod and a stud and nut. For $50 its worth it.
94ndta
07-05-2013, 09:21 AM
How bad is it to drive it like this? I'm debating trying to do this in my garage on jack stands or driving about 6 miles to my buddies shop with a lift.
popo8
07-05-2013, 09:23 AM
How bad is it to drive it like this? I'm debating trying to do this in my garage on jack stands or driving about 6 miles to my buddies shop with a lift.

If ur rumning a stock k member its a pita... Take it to the shop...



Co-Owner/Admin @ LTXtech.com
Chris
07-05-2013, 09:45 AM
How bad is it to drive it like this? I'm debating trying to do this in my garage on jack stands or driving about 6 miles to my buddies shop with a lift.

Fwiw I drove mine about a week till I got it up in the air to do it. Its not to much of a pita if you can raise the engine up a bit with a support then turn the crank as you remove the pan for clearance

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popo8
07-05-2013, 09:56 AM
Fwiw I drove mine about a week till I got it up in the air to do it. Its not to much of a pita if you can raise the engine up a bit with a support then turn the crank as you remove the pan for clearance

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Engine up... K member loose... Is the easiest...and on ur back under neath ... Ehhhh.


If u have the choice.... Shop+lift=better

Co-Owner/Admin @ LTXtech.com
94ndta
07-09-2013, 06:21 PM
Checking the oil tomorrow. If it is the pick up, we are probably looking at a new stock pan, the assembly Chris posted, and a new oils pan gasket?
Chris
07-09-2013, 06:44 PM
You dont need a new pan unless yours is damaged for some reason

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94ndta
07-09-2013, 06:46 PM
In my first post I mentioned it has a dent in it. I suspect that cold be the reason the pick up fell off.
firebird_1995
07-09-2013, 06:50 PM
Your old pan should be alright as long as it doesn't get mangled coming out.
94ndta
07-09-2013, 07:03 PM
Ignore the fram oil filter, only used it for the initial start up.

http://img.photobucket.com/albums/v487/Hazerd64/IMG_20130614_204819_329_zps775e501f.jpg
OVA1
07-09-2013, 07:33 PM
LOL! That's how I got a 396.
94ndta
07-09-2013, 07:54 PM
Explain. I don't want to make the same mistake.
94ndta
04-20-2014, 07:22 PM
Well, I'm doing this next weekend. Is the stock oil pan gasket reusable? Or should I get a new one. Pretty low miles. If not, which one shall I get for the stock pan.
firebird_1995
04-20-2014, 09:12 PM
I'd get a new one. I believe they're only $25. The new ones are that nice new blue permatorque stuff that doesn't require rtv and I'll probably get chastised for this but I rtv both sides of the gasket on the outermost edge as well. I got burnt way too many times on those old school cork gaskets to trust any oil retaining gasket unfortunately. I'd really like to try one without rtv one time but I hate hate HATE leak.....
After I set the pan down and get it torqued down, I go back and push all the excess rtv into the space between the pan and block and smooth it out. You don't have to do it like that, that's just how I do it. Like I said, I got trust issues with gaskets lol
94ndta
04-20-2014, 09:23 PM
I'd get a new one. I believe they're only $25. The new ones are that nice new blue permatorque stuff that doesn't require rtv and I'll probably get chastised for this but I rtv both sides of the gasket on the outermost edge as well. I got burnt way too many times on those old school cork gaskets to trust any oil retaining gasket unfortunately. I'd really like to try one without rtv one time but I hate hate HATE leak.....
After I set the pan down and get it torqued down, I go back and push all the excess rtv into the space between the pan and block and smooth it out. You don't have to do it like that, that's just how I do it. Like I said, I got trust issues with gaskets lol
So I'm guessing just a standard fel pro SBC gasket is the wAy to go?
firebird_1995
04-20-2014, 09:37 PM
OS34500R
94ndta
04-20-2014, 09:41 PM
OS34500R
Thank you.
94ndta
04-26-2014, 10:54 PM
Oil pressure woes fixed. The pick up was not actually off in the pan, but was pressed up in such a way that the dent was almost completely flush with the screen, making contact. New pump and dent hammered out no issues.

now,mid I can only figure out the brown coolant.

99.9% positive not oil! Engine oil is clean, tranny oil is clean and both have no signs of coolant. In them. The car sat for a long long time open to the elements with the heads and water pump off. I'm positive it's still rust. I just need to figure out how to clean it out.
popo8
04-26-2014, 11:12 PM
Time to give it a few flushes amd see if it clears up.

LTXtech.com is my DRUG!
94ndta
04-26-2014, 11:27 PM
Time to give it a few flushes amd see if it clears up.

LTXtech.com is my DRUG!
I've done 2, one of which we hooked up some contraption my buddies has that you hook up to a hose and an air compressor that flushes it. The car sat for a good period of time with the water pump off (4 years) and the coolant drained. I have had a suggestion of a good friend and mechanic of 35 years that there is a cleaner out there that can be used for rust in coolant systems, but he couldn't remember what it is. I think I may need to go that route.