took the heads off...look what I found - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dubie · 07-03-2002, 02:55 PM

A bit of rust in one of the cylinders. I put the penetrating oil to it and it took it right off. Just have to use a 400 grit emery to remove a bit off the marking now.

**Yukon Jack** · 07-03-2002, 03:19 PM

Was it just a gasket problem or is something worse wrong causing that problem?

dubie · 07-03-2002, 03:25 PM

Looks like it was a gasket problem. Whoever did the work on this engine previously did a really bad job. So it looks like it's time for more of a rebuild than i was hoping.

mikej71 · 07-03-2002, 04:38 PM

How long has it been since it was rebuilt? It sure is clean.
Mine had crap built up almost to the bottom of the intake.

DennyB · 07-03-2002, 05:59 PM

Do yourself a favor dubie, and get the block and heads magnafluxed (sp?) before the rebuild

Doesn’t look to bad though unless a crack in the block or head caused the water seepage into the cylinder.

Longhorn Man · 07-03-2002, 06:12 PM

That does not look right...

DennyB · 07-03-2002, 06:39 PM

BTW, Are those "pits" in the top of the #2 piston?

dubie · 07-04-2002, 09:36 AM

No those aren't pits. It's just the pic. I will be taking the block to the local machine shop to have the cylinders honed and re cross hatched, might even go as far as going .40 over, dunno yet, gotta see how much $$$$ it's gonna run me. But it looks like this is gonna be a winter rebuild project. I was hoping to have it done this summer, but looks like it's postponed for 1 more year.

*Fast68Chevy* · 07-06-2002, 05:40 PM

was the gasket steel or composite? if was steel then was probably original. if composite using no sealer then has been replaced

what heads casting number were on there ? date code ?

07-03-2002, 02:55 PM	#1
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,853	took the heads off...look what I found A bit of rust in one of the cylinders. I put the penetrating oil to it and it took it right off. Just have to use a 400 grit emery to remove a bit off the marking now. __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

07-03-2002, 03:25 PM	#3
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,853	Looks like it was a gasket problem. Whoever did the work on this engine previously did a really bad job. So it looks like it's time for more of a rebuild than i was hoping. __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

07-03-2002, 04:38 PM	#4
mikej71 Unregistered User Join Date: Dec 2001 Location: Houston, TX USA Posts: 538	How long has it been since it was rebuilt? It sure is clean. Mine had crap built up almost to the bottom of the intake. __________________ 71 SWB Stepside SB400/TH350

07-03-2002, 05:59 PM	#5
DennyB Led Sled! Discs R 4 ME! Join Date: Jan 2001 Location: Toms River, NJ, USA (Transplanted Hoosier) Posts: 7,327	Do yourself a favor dubie, and get the block and heads magnafluxed (sp?) before the rebuild Doesn’t look to bad though unless a crack in the block or head caused the water seepage into the cylinder. __________________ "Never ride faster than your Angel can fly" I.M.O.M,W,J&C Patriot Guard Rider

07-03-2002, 06:39 PM	#7
DennyB Led Sled! Discs R 4 ME! Join Date: Jan 2001 Location: Toms River, NJ, USA (Transplanted Hoosier) Posts: 7,327	BTW, Are those "pits" in the top of the #2 piston? __________________ "Never ride faster than your Angel can fly" I.M.O.M,W,J&C Patriot Guard Rider

07-03-2002, 03:19 PM	#2
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	Was it just a gasket problem or is something worse wrong causing that problem? __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

07-03-2002, 06:12 PM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	That does not look right...

07-04-2002, 09:36 AM	#8
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,853	No those aren't pits. It's just the pic. I will be taking the block to the local machine shop to have the cylinders honed and re cross hatched, might even go as far as going .40 over, dunno yet, gotta see how much $$$$ it's gonna run me. But it looks like this is gonna be a winter rebuild project. I was hoping to have it done this summer, but looks like it's postponed for 1 more year. __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

07-06-2002, 05:40 PM	#9
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	was the gasket steel or composite? if was steel then was probably original. if composite using no sealer then has been replaced what heads casting number were on there ? date code ?



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