150 Miles per Quart???
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,762
Likes: 820
From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
2023 C8 of the Year Finalist - Unmodified
The oil pressure is normal for a fresh engine, no worries there.
Intake gaskets are indeed the next thing to check. Have you had someone follow you and check when it smokes the worst? If it smokes the most under heavy load it points to rings. If it's the most under decel it's something in the heads/intake like intake gaskets, valve guides/seals etc.
Intake gaskets are indeed the next thing to check. Have you had someone follow you and check when it smokes the worst? If it smokes the most under heavy load it points to rings. If it's the most under decel it's something in the heads/intake like intake gaskets, valve guides/seals etc.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
valve seals : need air compressor & adapter to screw into spark plug hole that connects to air ... if it's seals, that should be on ATK.
both intake and valve seal jobs require cleanliness, competency and attention to detail ... any experienced A&P cert should do well.
both intake and valve seal jobs require cleanliness, competency and attention to detail ... any experienced A&P cert should do well.
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
Oil pressure is normal. I would check some valve guide seals first since that is easier than the intake.
You'll need a valve spring removal tool. I use rope in the cylinder through the spark plug hole with a bit sticking out then jam the piston against it. The rope will give the valve something to push against while you compress the springs and again keep the valves up when you put the springs back on.
This is the one I have now. It's a whole lot better than other ones you'll find that are cheaper, but a whole lot harder to use. I also use a magnetic pick up tool to remove the keepers so I don't drop them down a hole in the heads.
You'll need a valve spring removal tool. I use rope in the cylinder through the spark plug hole with a bit sticking out then jam the piston against it. The rope will give the valve something to push against while you compress the springs and again keep the valves up when you put the springs back on.
This is the one I have now. It's a whole lot better than other ones you'll find that are cheaper, but a whole lot harder to use. I also use a magnetic pick up tool to remove the keepers so I don't drop them down a hole in the heads.
Last edited by REELAV8R; Jun 7, 2020 at 09:13 PM.
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
I see you have not read the whole thread dont blame you. I have had 4 or 5 guys follow me and all agree it smokes bad out the right side after letting off from a pull, in other words high vacuum. I can see this in the rearview mirror. Left side has minimal smoke but you can make some out !
Guilty as charged.That's kinda good news as it looks more like intake gasket than rings. Easy enough to fix.
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Gotta hear the answer now.
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,762
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From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
2023 C8 of the Year Finalist - Unmodified
Melting Slicks
Joined: Dec 2009
Posts: 3,233
Likes: 657
From: Thunder Bay
August??! This is why most of us that drive 40+ year old cars do our own wrenching. For the cost of an intake gasket and a six pack, and about four hours out of a weekend, you can determine if its the intake gasket leaking. (By the way that's where I'm putting my money, if anyone's starting a pool.)
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,762
Likes: 820
From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
2023 C8 of the Year Finalist - Unmodified
I also have 2 other cars, 4 bikes, an Aussie, horses, and let's not forget the wife and kids. 4 hrs??? Maybe a year from the next blue moon! They have already taken a peek at the valve seals and just confirmed they are all there!
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
August??! This is why most of us that drive 40+ year old cars do our own wrenching. For the cost of an intake gasket and a six pack, and about four hours out of a weekend, you can determine if its the intake gasket leaking. (By the way that's where I'm putting my money, if anyone's starting a pool.)
I've thought intake gasket install (particularly the work / choice of gasket) from get go and posted same much earlier ... still do. Clever fellow with a few tools should be able to R&R an intake.
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,762
Likes: 820
From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
2023 C8 of the Year Finalist - Unmodified
Ok... so the installing shop opened a warranty claim with ATK. Next day tech guy calls them and gives them the same song and dance they give me , run a line to the AC. Shop explains that the customer just put 100 miles on car with WITH THE PCV DISCONNECTED and AtTK says run a line to AC.then put at least 75 miles on the car Shop and I think they are just following a standard protocol. Shop wants me to take the car again to put the mileage on after they instal ATK specified part number PCV and ac line. This time I'm going to take the car and say see you in an hour, it's not coming home and losing more days!!!
Last edited by BPHORSEGUY; Jun 11, 2020 at 02:53 PM.
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
Ok... so the installing shop opened a warranty claim with ATK. Next day tech guy calls them and gives them the same song and dance they give me , run a line to the AC. Shop explains that the customer just put 100 miles on car with WITH THE PCV DISCONNECTED and AtTK says run a line to AC.then put at least 75 miles on the car Shop and I think they are just following a standard protocol. Shop wants me to take the car again to put the mileage on after they instal ATK specified part number PCV and ac line. This time I'm going to take the car and say see you in an hour, it's not coming home and losing more days!!!
No way in hell would I let that shop touch the car again. Warranty or no Warranty.........the headache isn't worth it.
Jebby
Last edited by Jebbysan; Jun 11, 2020 at 05:47 PM.
Thread Starter
Melting Slicks
Joined: Jul 2010
Posts: 2,762
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From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
2023 C8 of the Year Finalist - Unmodified
Ok.....So now on the advice of the engine builder we pulled the Rocker arm studs and found minimal thread sealer and evidence that oil had been sucked thru the threads as the builder expected. We cleaned everything up , applied liberal sealer and re-torqued everything, then re did the valve clearances. Now we need to put on some miles... again! I wonder what else is wrong with these heads, the whole valve train was re-checked!
Melting Slicks
Joined: Apr 2019
Posts: 2,514
Likes: 1,166
From: Northern Wisconsin
Ok.....So now on the advice of the engine builder we pulled the Rocker arm studs and found minimal thread sealer and evidence that oil had been sucked thru the threads as the builder expected. We cleaned everything up , applied liberal sealer and re-torqued everything, then re did the valve clearances. Now we need to put on some miles... again! I wonder what else is wrong with these heads, the whole valve train was re-checked!