Got the motor turning - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CustomGMC’s · 12-19-2019, 02:20 AM

The engine in my 67 was stuck from the PO leaving the heads off for some years (it looked rough). After spraying it all down with penetrating oil and cleaning up the cylinders we were able to slowly get the motor turning over and all seems good so far. The cylinders all cleaned up really nice. I was really planning on replacing it but I’m going to give it a chance and maybe we will get lucky if nothing else is wrong. It was supposed to run really strong but they “took the heads off to rebuild and never got them back on”
I know it’s a gamble and we should probably just have pulled it but for a $40 gasket kit and some supplies It’s a cheap experiment.
Hopefully have it running sometime in the next week.

rpmerf · 12-19-2019, 08:07 AM

I dig it. What have you got to loose, right? I think my biggest fears would be either crap in the oil pan getting stuck in a port, or loosing compression depending how bad the cylinder walls were. Might try and flush that oil as much as possible before you run it, then give it an oil change quickly afterwards.

yuccales · 12-19-2019, 08:39 AM

I bet she runs!

**maverickmk** · 12-19-2019, 10:00 AM

You'll be fine. Have any before pictures?

CustomGMC’s · 12-19-2019, 10:32 AM

Quote:

Originally Posted by rpmerf

I dig it. What have you got to loose, right? I think my biggest fears would be either crap in the oil pan getting stuck in a port, or loosing compression depending how bad the cylinder walls were. Might try and flush that oil as much as possible before you run it, then give it an oil change quickly afterwards.

That’s what I was thinking. I pulled the drain plug and there was only about a quart of oil that was in it so hopefully they drained most of it when they took it apart. I sprayed penetrating oil all through the lifter valley and down onto the cam and dumped a quart of oil in it so hopefully that washed out some of the dirt and stuff and then drained it. I’m going to run it and then drain it all again with it warm so hopefully any remaining sludge will wash itself out. Someone had bored it 60 over at one point and the freeze plugs in the block have been replaced so not sure on how many miles on it.

CustomGMC’s · 12-19-2019, 10:33 AM

Quote:

Originally Posted by yuccales

I bet she runs!

Crossing fingers!!

CustomGMC’s · 12-19-2019, 10:35 AM

Quote:

Originally Posted by maverickmk

You'll be fine. Have any before pictures?

Thanks, I don’t think I took any. The cylinders had some surface rust and it was very dirty from years without a cover on it

**truckster** · 12-19-2019, 10:53 AM

What did the oil look like when you drained it? If there was any water in it, I'd be concerned that water might have made its way past the rings and to the crankshaft.

**Ironangel** · 12-19-2019, 12:53 PM

Pour a quart of Marvels Mystery Oil in with 4 quarts of your favorite zinc ladened 30w oil and fire that old girl up. Run her through a couple of heat cycles tuning her up and change the oil and filter. Take a compression test to reveal any possibly weak cylinders and you should be good to go...

**maverickmk** · 12-19-2019, 12:55 PM

Quote:

Originally Posted by Ironangel

Pour a quart of Marvels Mystery Oil in with 4 quarts of your favorite zinc ladened 30w oil and fire that old girl up. Run her through a couple of heat cycles tuning her up and change the oil and filter. Take a compression test to reveal any possibly weak cylinders and you should be good to go...

Good call on the zinc.

Keith Seymore · 12-19-2019, 02:50 PM

Got the motor turnin'.....

Head out on the HIGHWAY....

Looking for adventure....

In whatever comes my way....

Keith Seymore · 12-19-2019, 02:51 PM

(sorry)

**maverickmk** · 12-19-2019, 02:52 PM

Quote:

Originally Posted by Keith Seymore

Got the motor turnin'.....

Head out on the HIGHWAY....

Looking for adventure....

In whatever comes my way....

**Mts67C10K20** · 12-19-2019, 03:46 PM

NICE
it's a sbc it will run when all others fail
Clean
Flush
Clean
Flush
And as always hold your breath when you hit the key

CustomGMC’s · 12-19-2019, 09:33 PM

Quote:

Originally Posted by truckster

What did the oil look like when you drained it? If there was any water in it, I'd be concerned that water might have made its way past the rings and to the crankshaft.

There was about a quart of some really dark and thick oil. I think that part will be okay

CustomGMC’s · 12-19-2019, 09:37 PM

Quote:

Originally Posted by Ironangel

Pour a quart of Marvels Mystery Oil in with 4 quarts of your favorite zinc ladened 30w oil and fire that old girl up. Run her through a couple of heat cycles tuning her up and change the oil and filter. Take a compression test to reveal any possibly weak cylinders and you should be good to go...

Good idea on the mystery oil! I need to get some more of it.

CustomGMC’s · 12-19-2019, 09:39 PM

Quote:

Originally Posted by Keith Seymore

Got the motor turnin'.....

Head out on the HIGHWAY....

Looking for adventure....

In whatever comes my way....

Lol that’s funny! Hopefully heading out on the highway, I need a fun driver!

CustomGMC’s · 12-19-2019, 09:40 PM

Quote:

Originally Posted by Mts67C10K20

NICE
it's a sbc it will run when all others fail
Clean
Flush
Clean
Flush
And as always hold your breath when you hit the key

👍 that’s what I’m hoping

**kidatheart** · 12-19-2019, 09:55 PM

Quote:

Originally Posted by maverickmk

Good call on the zinc.

Which oils are high in zinc?

**Boog** · 12-19-2019, 10:11 PM

Externally the engine shows it's age but my goodness, inside it cleaned up real nice. The piston tops and cylinder walls look great. Hardly any ring groove to be seen. Having it opened up this far aren't you curious what shape the cam is in too?

**maverickmk** · 12-19-2019, 10:20 PM

Quote:

Originally Posted by kidatheart

Which oils are high in zinc?

I'm not aware of any oils currently available with an amount of zinc to protect flat tappet cams these days. There are small bottles of zinc additive available at all the usual auto parts stores.

**kidatheart** · 12-19-2019, 10:55 PM

Quote:

Originally Posted by maverickmk

I'm not aware of any oils currently available with an amount of zinc to protect flat tappet cams these days. There are small bottles of zinc additive available at all the usual auto parts stores.

Ok. Thanks.

CustomGMC’s · 12-19-2019, 11:03 PM

Quote:

Originally Posted by Boog

Externally the engine shows it's age but my goodness, inside it cleaned up real nice. The piston tops and cylinder walls look great. Hardly any ring groove to be seen. Having it opened up this far aren't you curious what shape the cam is in too?

You are right about that, it cleaned up a lot more than I was expecting. I am curious about the cam but I’m really just wanting to see if it will run and it’s not knocking or any bottom end problems before I put any real money in it.

CustomGMC’s · 12-19-2019, 11:05 PM

Quote:

Originally Posted by maverickmk

I'm not aware of any oils currently available with an amount of zinc to protect flat tappet cams these days. There are small bottles of zinc additive available at all the usual auto parts stores.

I was looking at some different zinc additives, STP sells one and some others. Any suggestions on which one I should get?

toolboxchev · 12-20-2019, 12:36 AM

Did not look and see if you lubed a (new) cam and lifters???

Valvoline VR1

Comp Cams engine break in additive.

Best stuff I found out there and 89 thousand on a top end rebuild proves it to me.

12-19-2019, 02:20 AM	#1
CustomGMC’s Registered User Join Date: Dec 2019 Location: Apache Junction AZ Posts: 36	Got the motor turning The engine in my 67 was stuck from the PO leaving the heads off for some years (it looked rough). After spraying it all down with penetrating oil and cleaning up the cylinders we were able to slowly get the motor turning over and all seems good so far. The cylinders all cleaned up really nice. I was really planning on replacing it but I’m going to give it a chance and maybe we will get lucky if nothing else is wrong. It was supposed to run really strong but they “took the heads off to rebuild and never got them back on” I know it’s a gamble and we should probably just have pulled it but for a $40 gasket kit and some supplies It’s a cheap experiment. Hopefully have it running sometime in the next week. Attached Images

12-19-2019, 08:07 AM	#2
rpmerf Registered User Join Date: Feb 2011 Location: Parkville, MD Posts: 1,024	Re: Got the motor turning I dig it. What have you got to loose, right? I think my biggest fears would be either crap in the oil pan getting stuck in a port, or loosing compression depending how bad the cylinder walls were. Might try and flush that oil as much as possible before you run it, then give it an oil change quickly afterwards. __________________ 1970 C20 Custom Camper - 350, TH350 1997 GMC Suburban 1994 Acura Integra GSR 1987 Dodge Daytona Shelby Z

12-19-2019, 08:39 AM	#3
yuccales Registered User Join Date: May 2011 Location: Northern Calif. Posts: 3,743	Re: Got the motor turning I bet she runs!

12-19-2019, 10:00 AM	#4
maverickmk Senior Member Join Date: Nov 2019 Location: Cocoa FL Posts: 596	Re: Got the motor turning You'll be fine. Have any before pictures? __________________ Die with memories, not dreams. Not to brag, but I don't need alcohol to make really bad decisions. 1969 GMC Short Step Side

12-19-2019, 10:53 AM	#8
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,953	Re: Got the motor turning What did the oil look like when you drained it? If there was any water in it, I'd be concerned that water might have made its way past the rings and to the crankshaft. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson

12-19-2019, 12:53 PM	#9
Ironangel Senior Member Join Date: Feb 2010 Location: Falls City, Nebraska "100 Miles From Nowhere" Posts: 2,219	Re: Got the motor turning Pour a quart of Marvels Mystery Oil in with 4 quarts of your favorite zinc ladened 30w oil and fire that old girl up. Run her through a couple of heat cycles tuning her up and change the oil and filter. Take a compression test to reveal any possibly weak cylinders and you should be good to go... __________________ Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American"

12-19-2019, 02:50 PM	#11
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,213	Re: Got the motor turning Got the motor turnin'..... Head out on the HIGHWAY.... Looking for adventure.... In whatever comes my way.... __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

12-19-2019, 02:51 PM	#12
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,213	Re: Got the motor turning (sorry) __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

12-19-2019, 03:46 PM	#14
Mts67C10K20 Senior Member Join Date: May 2017 Location: Dowagiac Michigan Posts: 202	Re: Got the motor turning NICE it's a sbc it will run when all others fail Clean Flush Clean Flush And as always hold your breath when you hit the key

12-19-2019, 10:11 PM	#20
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,435	Re: Got the motor turning Externally the engine shows it's age but my goodness, inside it cleaned up real nice. The piston tops and cylinder walls look great. Hardly any ring groove to be seen. Having it opened up this far aren't you curious what shape the cam is in too? __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

12-20-2019, 12:36 AM	#25
toolboxchev Registered User Join Date: Jul 2015 Location: 2nd left past the stump on a dirt road. Posts: 2,629	Re: Got the motor turning Did not look and see if you lubed a (new) cam and lifters??? Valvoline VR1 Comp Cams engine break in additive. Best stuff I found out there and 89 thousand on a top end rebuild proves it to me.



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