H-I-J '76 Nova re-fit. - Page 117

Nmbr1GMfan · 05-03-2019, 09:36 AM

Goodbye C-12.

Bob Mulry · 05-03-2019, 11:18 AM

Your oil. pick up is in the wrong location...

Do yourself a favor and give me a call 650 922 zero 4 zero 7

Bob

Nmbr1GMfan · 05-03-2019, 11:47 AM

Quote:

Originally Posted by Bob Mulry

Your oil. pick up is in the wrong location...

Do yourself a favor and give me a call 650 922 zero 4 zero 7

Bob

Bob, the oil pump pickup has been moved. It's now considerably closer.

Bob Mulry · 05-03-2019, 01:54 PM

Quote:

Originally Posted by nmbr1gmfan

bob, the oil pump pickup has been moved. It's now considerably closer.

call me.....

Nmbr1GMfan · 05-03-2019, 07:32 PM

Quote:

Originally Posted by Bob Mulry

call me.....

Been out of town most of the day today Bob, I'll call you tomorrow.

Nmbr1GMfan · 05-03-2019, 07:43 PM

Had a few minutes this morning to get the lifters set up and the rockers on. I have three different lifters set up and I'm checking how they each react to oil pressure as well as differences rear to front.

Rich Biebel · 05-03-2019, 09:35 PM

The oil collects in the valley and can’t drain back as fast with those extension vents. I’d get rid of them and leave the holes open for faster drain back to the pan.

Use the screw-in the back restrictors and drill the holes out a little larger and see what that looks like along with removing those extension vents.

Just my 2 cents ....

HP HUNTER · 05-04-2019, 12:19 AM

Quote:

Originally Posted by Bob Mulry

Your oil. pick up is in the wrong location...

Do yourself a favor and give me a call 650 922 zero 4 zero 7

Bob

Yes

Nmbr1GMfan · 05-04-2019, 10:39 AM

Quote:

Originally Posted by Rich Biebel

The oil collects in the valley and can’t drain back as fast with those extension vents. I’d get rid of them and leave the holes open for faster drain back to the pan.

Use the screw-in the back restrictors and drill the holes out a little larger and see what that looks like along with removing those extension vents.

Just my 2 cents ....

Rich, thanks for the input. I'm worried about restrictors in the back of the block because that will restrict oil at the lobe, as well, I see a volume difference at the rocker from front to back. I'm afraid restrictors and the lower volume at the front will cause other issues. And as far as the extension vents, the engine on the stand is very slightly angled front up (but not as angled as when in the car) and the oil barely stays on the valley. I'm currently seeing all the oil running to the back of the head and straight down the rear drain holes.

Dissident · 05-04-2019, 04:17 PM

Todd, et al,

Trivial input perhaps, albeit solidly scientific in analysis.

The oil goes in the opposite direction of vehicle acceleration, so the oil return heads to the rear very naturally. So does the oil in the sump (pan).
The angle of the liquid is a function of the acceleration in g.

1g = 45deg liquid angle

60ft times reference is something interesting to look at.

Particularly where the oil pickup is placed in a drag racing vehicle!

1.4sec = 62.28deg liquid angle
1.5sec = 58.9deg liquid angle
1.6sec = 55.54deg liquid angle

All these things and more were included in the paper I sent to you a while back. These things apply to all liquids in the vehicle, including the fuel system.

Regards,
HB2

05-03-2019, 09:36 AM	#1161
Nmbr1GMfan VIP Member Join Date: Aug 2013 Posts: 1,766 Likes: 1,197 Liked 1,957 Times in 492 Posts	Re: H-I-J '76 Nova re-fit. Goodbye C-12. __________________ Todd Greene

05-03-2019, 11:18 AM	#1162
Bob Mulry VIP Member Join Date: Apr 2002 Location: Coarsegold, CA Posts: 1,017 Likes: 57 Liked 321 Times in 101 Posts	Re: H-I-J '76 Nova re-fit. Your oil. pick up is in the wrong location... Do yourself a favor and give me a call 650 922 zero 4 zero 7 Bob __________________ Bob Mulry 7516 STK A & M Motorsports

05-03-2019, 07:43 PM	#1166
Nmbr1GMfan VIP Member Join Date: Aug 2013 Posts: 1,766 Likes: 1,197 Liked 1,957 Times in 492 Posts	Re: H-I-J '76 Nova re-fit. Had a few minutes this morning to get the lifters set up and the rockers on. I have three different lifters set up and I'm checking how they each react to oil pressure as well as differences rear to front. __________________ Todd Greene

05-03-2019, 09:35 PM	#1167
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,275 Likes: 25 Liked 510 Times in 200 Posts	Re: H-I-J '76 Nova re-fit. The oil collects in the valley and can’t drain back as fast with those extension vents. I’d get rid of them and leave the holes open for faster drain back to the pan. Use the screw-in the back restrictors and drill the holes out a little larger and see what that looks like along with removing those extension vents. Just my 2 cents .... __________________ Rich Biebel S/C 1479

05-04-2019, 04:17 PM	#1170
Dissident Member Join Date: Jan 2016 Location: Colorado hills Posts: 123 Likes: 11 Liked 73 Times in 36 Posts	Re: H-I-J '76 Nova re-fit. Todd, et al, Trivial input perhaps, albeit solidly scientific in analysis. The oil goes in the opposite direction of vehicle acceleration, so the oil return heads to the rear very naturally. So does the oil in the sump (pan). The angle of the liquid is a function of the acceleration in g. 1g = 45deg liquid angle 60ft times reference is something interesting to look at. Particularly where the oil pickup is placed in a drag racing vehicle! 1.4sec = 62.28deg liquid angle 1.5sec = 58.9deg liquid angle 1.6sec = 55.54deg liquid angle All these things and more were included in the paper I sent to you a while back. These things apply to all liquids in the vehicle, including the fuel system. Regards, HB2