The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-27-2018, 06:46 PM   #1
71CHEVYSHORTBED402
Senior Member
 
71CHEVYSHORTBED402's Avatar
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,114
Did I hurt my head?

71 402 - I'm green to all of this Engine was previously rebuilt, I'm just adding new gaskets and such


Three weeks ago I washed the heck out of my engine block. And two weeks ago I turned the engine upside down on a stand to work on the oil pan. I left the block upside down. That's a bad combination, don't do that

So today I pulled the spark plugs, was working on some stuff when I see water draining out of the #7 spark plug hole......YIKES. That "cylinder" is at the lowest point where the engine was positioned on the stand, upside down.

I wasn't going to pull the intake today, but I couldn't take it off fast enough. So I turned the engine upright and oil and "fluids" poured out of the bottom (no pan). Anyway, this is what I found (pictured). Only thing I can think of is water came through the intake somehow. Could have been the crappy valve cover gaskets, I pulled the covers as well.

You figure I jacked this up? Near as I can tell I vacuumed it dry. I'm thinking about taking a pipe brush to the port, for lack of a better term, vacuum as I go and then hit it with fogger. Might be better to skip the brush, I don't really know.

Ideas, input appreciated.
Attached Images
  
__________________
Tony
71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025

Last edited by 71CHEVYSHORTBED402; 05-28-2018 at 01:23 AM.
71CHEVYSHORTBED402 is offline   Reply With Quote
Old 05-27-2018, 08:27 PM   #2
truckster
Senior Member
 
truckster's Avatar
 
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,789
Re: Did I hurt my head?

The openings on the end of the head are water passages. If the little bit of rust in there is what you're concerned about, you don't need to be.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson
truckster is offline   Reply With Quote
Old 05-27-2018, 08:59 PM   #3
BCOWANWHEELS
Registered User
 
Join Date: Nov 2006
Location: KINGSPORT,TN.
Posts: 3,035
Re: Did I hurt my head?

This engine has been run on pure water. Bet you got a crack somewhere
__________________
I BELIEVE IN JOHN 3:16
BCOWANWHEELS is offline   Reply With Quote
Old 05-27-2018, 09:23 PM   #4
special-K
Special Order

 
special-K's Avatar
 
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
Re: Did I hurt my head?

It's just an ugly water port. How long has it been sitting? It will look better once you run it on coolant.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
Tim

"Don't call me a redneck. I'm a rough cut country gentleman"

R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~
special-K is offline   Reply With Quote
Old 05-28-2018, 01:15 AM   #5
71CHEVYSHORTBED402
Senior Member
 
71CHEVYSHORTBED402's Avatar
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,114
Re: Did I hurt my head?

Do I dare read the responses I'm not happy. I don't know much about engines, can't say what's going on here. Okay, I'll read

Water port huh? I can live with that, but why would water drain into what I believe is a cylinder? All I know is water poured out the lowest spark plug hole after I removed the plug. The engine was upside down. It appeared as water anyway, no scent. Only thing I've "poured" into the cylinders was a good shot of fogger.

I suspect the water came from washing the block, there was a leak somewhere and it's been upside down over the last three weeks. But I don't begin to know why water would come through a spark plug hole. The plugs were installed when I washed it, maybe the one was seated right, but I don't see why. I don't know man, might be a crack. For what it's worth, the water system included antifreeze, this looked like water.

It's been sitting two years. Will be another two before I drive this thing. I can say the engine was TIGHT when I put it to sleep, without water coming though a spark plug hole.


Other than that, are the front and rear ports on each head for water (i.e., four total)?
__________________
Tony
71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025

Last edited by 71CHEVYSHORTBED402; 05-28-2018 at 01:45 AM.
71CHEVYSHORTBED402 is offline   Reply With Quote
Old 05-28-2018, 07:39 AM   #6
special-K
Special Order

 
special-K's Avatar
 
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
Re: Did I hurt my head?

If water got in the intake and the intake valve was open is a way.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
Tim

"Don't call me a redneck. I'm a rough cut country gentleman"

R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~
special-K is offline   Reply With Quote
Old 05-28-2018, 12:46 PM   #7
71CHEVYSHORTBED402
Senior Member
 
71CHEVYSHORTBED402's Avatar
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,114
Re: Did I hurt my head?

Quote:
Originally Posted by special-K View Post
If water got in the intake and the intake valve was open is a way.
I suspect that was it. Not planning on removing head gaskets. Thanks Tim.
__________________
Tony
71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025
71CHEVYSHORTBED402 is offline   Reply With Quote
Old 05-28-2018, 11:41 PM   #8
truckster
Senior Member
 
truckster's Avatar
 
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,789
Re: Did I hurt my head?

You want to get some oil in the cylinders and rotate the crank to make sure you don't have a ring rust to the cylinder wall. Two or three turns should do it.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson
truckster is offline   Reply With Quote
Old 05-29-2018, 11:43 AM   #9
71CHEVYSHORTBED402
Senior Member
 
71CHEVYSHORTBED402's Avatar
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,114
Re: Did I hurt my head?

Quote:
Originally Posted by truckster View Post
You want to get some oil in the cylinders and rotate the crank to make sure you don't have a ring rust to the cylinder wall. Two or three turns should do it.
Squirt some regular oil or fogger into the spark plug holes I take it?

Any reason to spin the cam as well? The timing chain isn't on.




On a side, I see there are four water ports to answer the question above. Seems the other ports are for "combustion".
__________________
Tony
71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025

Last edited by 71CHEVYSHORTBED402; 05-29-2018 at 01:00 PM.
71CHEVYSHORTBED402 is offline   Reply With Quote
Old 05-29-2018, 03:45 PM   #10
demian5
Registered User
 
demian5's Avatar
 
Join Date: Aug 2016
Location: Lake Forest, CA
Posts: 2,177
Re: Did I hurt my head?

You need to have an experienced person come over, understand your concern, and give you advice.
__________________
"Work hard, use your vacation days."
1970 C15 GMC Long Bed
1986 C20 Scottsdale
1983 K2500 Sierra Classic Suburban 6.2
Instagram: C10sofOC
demian5 is offline   Reply With Quote
Old 05-29-2018, 04:02 PM   #11
Grumpy old man
Senior Member
 
Grumpy old man's Avatar
 
Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
Re: Did I hurt my head?

All a big tado about nothing , fog the cylinders with DW40 finish cleaning it up and install the timing chain . intake and continue on . it's not going to be apart for so long you need to worry . Don't use any type "lube" in the water jacket . Your one of very few I've ever seen brush Por-15 on , it's way overkill but it's yours so do it it makes you feel good . tearing it down ,cleaning and reseal and paint is a weekend project . It's lasted 50 years already without such special attention . It's a Chevy V8 it will run caked in oil sludge and running on turpentine ...
Grumpy old man is offline   Reply With Quote
Old 05-29-2018, 07:17 PM   #12
truckster
Senior Member
 
truckster's Avatar
 
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,789
Re: Did I hurt my head?

Quote:
Originally Posted by 71CHEVYSHORTBED402 View Post
Squirt some regular oil or fogger into the spark plug holes I take it?

Any reason to spin the cam as well? The timing chain isn't on.



On a side, I see there are four water ports to answer the question above. Seems the other ports are for "combustion".[/SIZE]
Any type of oil will work - motor oil, machine oil, even WD-40. You just want to coat the rings and cylinder walls with a light coat of oil to disperse the water.

You have a water jacket port front and back. The four ports in the middle are intake ports - the fuel/air mixture flows through the carburetor and the intake manifold and into the cylinder through those ports. The exhaust flows out through the ports on the other side of the head.

Put the plugs back in it when you store it and cover the carburetor so water and debris don't get into the intake, and you should be fine to store it.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson
truckster is offline   Reply With Quote
Old 05-30-2018, 08:58 PM   #13
71CHEVYSHORTBED402
Senior Member
 
71CHEVYSHORTBED402's Avatar
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,114
Re: Did I hurt my head?

Quote:
Originally Posted by Grumpy old man View Post
All a big tado about nothing , fog the cylinders with DW40 finish cleaning it up and install the timing chain . intake and continue on . it's not going to be apart for so long you need to worry . Don't use any type "lube" in the water jacket . Your one of very few I've ever seen brush Por-15 on , it's way overkill but it's yours so do it it makes you feel good . tearing it down ,cleaning and reseal and paint is a weekend project . It's lasted 50 years already without such special attention . It's a Chevy V8 it will run caked in oil sludge and running on turpentine ...
Somehow I always feel better with a Grumpy opinion. Except the part about a weekend job. Don't tell anyone, but to do the pan over again I'd spray, and I'm not sure I'd use POR-15.



To anyone confused, it's just me. I thought water drained through the water port in the cylinder ha!. Didn't know it was a water port. Speak of water port, I cleaned up my intake today and noticed the rear water ports on the intake are sealed up. Don't know why, but it works.
Attached Images
 
__________________
Tony
71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025

Last edited by 71CHEVYSHORTBED402; 05-30-2018 at 10:48 PM. Reason: Spray
71CHEVYSHORTBED402 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:29 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com