Out it comes again - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Super73 · 09-14-2014, 12:18 AM

My name is not Marv, but I am feeling like it now. Looks like the head gaskets did not seal up. Just ordered new gaskets and I well spend the night getting it ready to come out. Suppose to be reaching in 2 weeks fire my b'day.

KQQL IT · 09-14-2014, 01:10 AM

That looks like a milkshake. Too bad it not as good.

IIGW · 09-14-2014, 03:24 AM

what gaskets did you use, and why are they not sealing?

Super73 · 09-14-2014, 04:11 AM

Cometics.. wish I knew why it did not seal. Heads were surfaced, needed .002 to square up. I sure hope I don't have a block issue. Will take the heads of some time tomorrow. 2 1/2 hours getting it out tonight by myself is a new record though.

cableguy0 · 09-14-2014, 11:24 AM

Redoing a job because of a parts failure is the worst. Its enough to drive you nuts.

Marv D · 09-14-2014, 11:52 AM

Are you sure it's the gaskets and not wicking up the studs? Don't know your bolt / stud configuration or if the LS has dry holes or not. Just a thought.

Also the Ra- surface on the heads is apparently a big deal with the Cometic gaskets. Cometic cites a minimum roughness of 50 Ra as I recall,, may be even rougher. If it's too slick the head doesn't 'bite into ' the gasket and the head moves around,, = eventual leaking.

Just what we found in the small-block stuff,,, you mileage may vary.

Super73 · 09-14-2014, 12:34 PM

Marv,

LS motors are dry holes. Only thing I can think is I did something a little different than my norm and it but me. It's just $250 and 8-10 hours.

low69chevy · 09-14-2014, 08:31 PM

You might want to spray some of that copper sealer spray they sell at the auto parts store between the gaskets if you aren't doing so already we've worked on several like that and they've worked gl on the fix.

Super73 · 09-14-2014, 09:39 PM

That is actually what I did differently. Copper coat between each layer, set the head on and torqued down immediately. Not sure I will be trying it again this time.

Super73 · 09-16-2014, 02:53 AM

Grrr..

Checked to make sure the block deck was square with a 24" snap on straight edge. Running the straight edge on a diagnal from top of 2 to bottom of 8, it is less than .002" out between the center of the bores (2 to 4 and 4 to 6) but nothing between the lifter to bore area. Front to back is dead on at the bottom of the block, at the bottom of the lifter boxes and at the top of the lifter boxes. It is the same situation with the drivers side but less than .003" between cyl's (1 to 3 and 3 to 5)

Heads were dead on.

Put it back together with new cometic gaskets, hooked the radiator up before installing it in the truck, filled the radiator and pressure tested it again.

The water is weeping from the passenger side inner 3 studs (inside the rocker area between 2 to 4 and 4 to 6).

I pulled those studs and blew the holes out, put thread sealer on the studs and screwed them back in and re-torqued the heads.

Water is still weeping from those inner 3 studs, passenger side only.

Keep in mind LS motors are supposed to be dry head stud bosses.

I have that head off for my machine shop to look it over but I don't see anything wrong with the head.

I am at a loss and could use some thoughts.

Super73 · 09-18-2014, 08:40 PM

Bummer for me. Looks like I need to buy a new head as it is cracked between the stud bosses and water jacket.

71Dragtruck · 09-18-2014, 10:03 PM

Well that sucks.

Super73 · 09-19-2014, 01:49 AM

Yup.. Listing a bunch of parts locally.. Hopefully I can come up with some quick cash

**Tom Vogel** · 09-19-2014, 09:23 AM

Can it not be welded?

slowtruck · 09-19-2014, 09:35 AM

That looks like a 6 bolt head are you sure you can't send it back for repair?

Marv D · 09-19-2014, 10:10 AM

This is a NEW head wasn't it Shaun??
Hey,, email me the list too, Have some things brew'n here and might be something we can use.

And welcome to the club of ' fix it break it ,,, fix it break it, fix it break it... and all over NOTHING you did wrong. Just sometimes

happen

Super73 · 09-19-2014, 11:01 AM

Long story but I bought the heads used. Yes they are a 6 bolt head. I am sill unsure if it can be repaired, I am looking in to it. But if it is 75% the cost of a new one, well not sure what route I will take. These early castings haf a little bit of an issue so I am told.

Marv, I am not a paying member here so I can not post my for sale stuff. I have it locally on cl.

Marv D · 09-19-2014, 02:11 PM

Quote:

Originally Posted by Super73

Long story but I bought the heads used. Yes they are a 6 bolt head. I am sill unsure if it can be repaired, I am looking in to it. But if it is 75% the cost of a new one, well not sure what route I will take. These early castings haf a little bit of an issue so I am told.

Marv, I am not a paying member here so I can not post my for sale stuff. I have it locally on cl.

You have my email don't you?

PM sent

Super73 · 09-25-2014, 11:24 AM

Ordered three new head which has a 4 week lead time.

I will need to bolt ot down, mark it, blend the entry to match the intake.

It will then need a valve job and milked to current cc.

Might have our running by the end of the year.

moggey01 · 09-25-2014, 03:42 PM

I know a few people that put siliconne around the studs and water passeges. Using copper coat is a good idea also. A dab of silicone on the stud thread helps also.

RICKSRAT · 09-27-2014, 07:10 AM

Quote:

Originally Posted by Super73

Ordered three new head which has a 4 week lead time.

I will need to bolt ot down, mark it, blend the entry to match the intake.

It will then need a valve job and milked to current cc.

Might have our running by the end of the year.

.

Not sure on Ls heads but Blown06. On Houstonperformancetrucks site has a set of bare heads for sale.

BigDan3131 · 01-04-2015, 02:46 AM

So Super,

What's going on? Its been quite some time since you last posted and I want to know how its all going together? Did you ever mount the turbo's and get that going?

I know you had family stuff going on too so I suppose that's why you aren't here. I'm so close to driveline time I can't wait, until I pinched my finger today between a full gas tank and a cresent wrench that is.

BR3W CITY · 01-04-2015, 03:57 AM

Heck ya I forgot about this thread after the initial oh-noes from the teardown photo.

Where are we at with this rebuild Super?

(and if you are dealing with some personal sh!t, the only thing I can say is we've all been there, but you know we're here to help ya one way or the other if we can).

Super73 · 01-04-2015, 05:02 AM

Thanks guys for the thoughts.

Good news new cam #1 sounds awesome. I speced a 259/274 .680/.62x 109icl 113lsa, still hr roller
I also have can #2 on the way from Brian Tooley..
I will be doing back to back dynoing soon.

Bad news was the head, bought new one and local machine shop did me right.

I am just needing to do new tie rod links with the MII spindles. Should be 3100lbs now but I suspect the 3.90 gear will slow me down n.a..

I am planning on making all the grudge races in sac this year.

djracer · 03-27-2015, 10:47 PM

What casting head are you running Shaun?

09-14-2014, 03:24 AM	#3
IIGW Registered User Join Date: Jul 2014 Location: phx az Posts: 353	Re: Out it comes again what gaskets did you use, and why are they not sealing? __________________ tubbed 1984 gmc jmmy http://67-72chevytrucks.com/vboard/s...d.php?t=639738 Alice Hombre http://67-72chevytrucks.com/vboard/s...d.php?t=808454 1963 Scout Retro-mod https://67-72chevytrucks.com/vboard/...d.php?t=854167

09-14-2014, 04:11 AM	#4
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Out it comes again Cometics.. wish I knew why it did not seal. Heads were surfaced, needed .002 to square up. I sure hope I don't have a block issue. Will take the heads of some time tomorrow. 2 1/2 hours getting it out tonight by myself is a new record though. Attached Images __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-14-2014, 11:24 AM	#5
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	Re: Out it comes again Redoing a job because of a parts failure is the worst. Its enough to drive you nuts. __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

09-14-2014, 11:52 AM	#6
Marv D Registered Truck Offender Join Date: May 2008 Location: hells training ground (aka Ariz) Posts: 3,118	Re: Out it comes again Are you sure it's the gaskets and not wicking up the studs? Don't know your bolt / stud configuration or if the LS has dry holes or not. Just a thought. Also the Ra- surface on the heads is apparently a big deal with the Cometic gaskets. Cometic cites a minimum roughness of 50 Ra as I recall,, may be even rougher. If it's too slick the head doesn't 'bite into ' the gasket and the head moves around,, = eventual leaking. Just what we found in the small-block stuff,,, you mileage may vary. __________________ Still playin with trucks, even at my age! When you're dead, it's only a problem for the people around you, because you don't know you're dead. .....It's kinda the same when your STUPID. I just did my taxes and reviewed my SS statement. Thanks to the current administration it looks like I will only have to work till noon on the day of my funeral.

09-14-2014, 12:34 PM	#7
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Out it comes again Marv, LS motors are dry holes. Only thing I can think is I did something a little different than my norm and it but me. It's just $250 and 8-10 hours. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-14-2014, 12:18 AM	#1
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Out it comes again My name is not Marv, but I am feeling like it now. Looks like the head gaskets did not seal up. Just ordered new gaskets and I well spend the night getting it ready to come out. Suppose to be reaching in 2 weeks fire my b'day. Attached Images __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-14-2014, 01:10 AM	#2
KQQL IT At the body shop. Join Date: Aug 2009 Location: Land of fruits and nuts. Posts: 5,260	Re: Out it comes again That looks like a milkshake. Too bad it not as good. __________________ " That didnt make it any newer " " Dont antique the equipment "

09-14-2014, 08:31 PM	#8
low69chevy Registered User Join Date: Jul 2011 Location: edinburg tx Posts: 174	Re: Out it comes again You might want to spray some of that copper sealer spray they sell at the auto parts store between the gaskets if you aren't doing so already we've worked on several like that and they've worked gl on the fix.

09-14-2014, 09:39 PM	#9
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Out it comes again That is actually what I did differently. Copper coat between each layer, set the head on and torqued down immediately. Not sure I will be trying it again this time. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-16-2014, 02:53 AM	#10
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Out it comes again Grrr.. Checked to make sure the block deck was square with a 24" snap on straight edge. Running the straight edge on a diagnal from top of 2 to bottom of 8, it is less than .002" out between the center of the bores (2 to 4 and 4 to 6) but nothing between the lifter to bore area. Front to back is dead on at the bottom of the block, at the bottom of the lifter boxes and at the top of the lifter boxes. It is the same situation with the drivers side but less than .003" between cyl's (1 to 3 and 3 to 5) Heads were dead on. Put it back together with new cometic gaskets, hooked the radiator up before installing it in the truck, filled the radiator and pressure tested it again. The water is weeping from the passenger side inner 3 studs (inside the rocker area between 2 to 4 and 4 to 6). I pulled those studs and blew the holes out, put thread sealer on the studs and screwed them back in and re-torqued the heads. Water is still weeping from those inner 3 studs, passenger side only. Keep in mind LS motors are supposed to be dry head stud bosses. I have that head off for my machine shop to look it over but I don't see anything wrong with the head. I am at a loss and could use some thoughts. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-18-2014, 08:40 PM	#11
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Out it comes again Bummer for me. Looks like I need to buy a new head as it is cracked between the stud bosses and water jacket. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-18-2014, 10:03 PM	#12
71Dragtruck Registered User Join Date: Jun 2004 Location: Saskatchewan, Canada Posts: 1,368	Re: Out it comes again Well that sucks. __________________ Speed is just a matter of money, question is how fast can you afford to go? 8.95@148.97mph all motor haven't tried bottle yet Sponsored by: Getz Oilfield Consulting Hard Candy Customs

09-19-2014, 01:49 AM	#13
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Out it comes again Yup.. Listing a bunch of parts locally.. Hopefully I can come up with some quick cash __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-19-2014, 09:23 AM	#14
Tom Vogel 2WD Jimmy Join Date: Mar 2005 Location: Davis County, Utah Posts: 2,565	Re: Out it comes again Can it not be welded?

09-19-2014, 09:35 AM	#15
slowtruck Registered User Join Date: Feb 2007 Location: Cabot AR. Posts: 126	Re: Out it comes again That looks like a 6 bolt head are you sure you can't send it back for repair?



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09-19-2014, 10:10 AM	#16
Marv D Registered Truck Offender Join Date: May 2008 Location: hells training ground (aka Ariz) Posts: 3,118	Re: Out it comes again This is a NEW head wasn't it Shaun?? Hey,, email me the list too, Have some things brew'n here and might be something we can use. And welcome to the club of ' fix it break it ,,, fix it break it, fix it break it... and all over NOTHING you did wrong. Just sometimes happen __________________ Still playin with trucks, even at my age! When you're dead, it's only a problem for the people around you, because you don't know you're dead. .....It's kinda the same when your STUPID. I just did my taxes and reviewed my SS statement. Thanks to the current administration it looks like I will only have to work till noon on the day of my funeral.

09-19-2014, 11:01 AM	#17
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Out it comes again Long story but I bought the heads used. Yes they are a 6 bolt head. I am sill unsure if it can be repaired, I am looking in to it. But if it is 75% the cost of a new one, well not sure what route I will take. These early castings haf a little bit of an issue so I am told. Marv, I am not a paying member here so I can not post my for sale stuff. I have it locally on cl. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-25-2014, 11:24 AM	#19
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Out it comes again Ordered three new head which has a 4 week lead time. I will need to bolt ot down, mark it, blend the entry to match the intake. It will then need a valve job and milked to current cc. Might have our running by the end of the year. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-25-2014, 03:42 PM	#20
moggey01 Registered User Join Date: Apr 2011 Location: Houston Texas Posts: 315	Re: Out it comes again I know a few people that put siliconne around the studs and water passeges. Using copper coat is a good idea also. A dab of silicone on the stud thread helps also.

01-04-2015, 02:46 AM	#22
BigDan3131 Registered User Join Date: Jun 2006 Location: Maple Valley, WA Posts: 1,913	Re: Out it comes again So Super, What's going on? Its been quite some time since you last posted and I want to know how its all going together? Did you ever mount the turbo's and get that going? I know you had family stuff going on too so I suppose that's why you aren't here. I'm so close to driveline time I can't wait, until I pinched my finger today between a full gas tank and a cresent wrench that is. __________________ Custom Painter/Restoration Specialist 1965 GMC 3/4 Ton LB SOLD? 1964 Chevy El Camino in full restoration 1991 Chevy S10 288K+ miles 2nd Owner SOLD 2020 RAM 1500 Warlock

01-04-2015, 03:57 AM	#23
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Out it comes again Heck ya I forgot about this thread after the initial oh-noes from the teardown photo. Where are we at with this rebuild Super? (and if you are dealing with some personal sh!t, the only thing I can say is we've all been there, but you know we're here to help ya one way or the other if we can). __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

01-04-2015, 05:02 AM	#24
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Out it comes again Thanks guys for the thoughts. Good news new cam #1 sounds awesome. I speced a 259/274 .680/.62x 109icl 113lsa, still hr roller I also have can #2 on the way from Brian Tooley.. I will be doing back to back dynoing soon. Bad news was the head, bought new one and local machine shop did me right. I am just needing to do new tie rod links with the MII spindles. Should be 3100lbs now but I suspect the 3.90 gear will slow me down n.a.. I am planning on making all the grudge races in sac this year. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

03-27-2015, 10:47 PM	#25
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: Out it comes again What casting head are you running Shaun? __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

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