Re: o-ringed block to flat surface head
[Re: dart games]
#2630881
03/09/19 07:54 PM
03/09/19 07:54 PM
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Joined: Aug 2003
Posts: 43,123 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,123
Bend,OR USA
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How high above the block do your O rings measure?
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: o-ringed block to flat surface head
[Re: dart games]
#2630911
03/09/19 09:32 PM
03/09/19 09:32 PM
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Joined: Mar 2005
Posts: 3,021 NY
B1duster
master
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master
Joined: Mar 2005
Posts: 3,021
NY
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have a o-ringed block and heads that has no receiver grooves,can I get by with using copper gaskets or do I need receiver cut heads,this will be a non blown,no nos wengine,will be ran on race gas I ran an Oringed megablock with copper gaskets and 440-1 heads with no receiver groove, with a 200 shot, for a few years with no problems at all. I used a little red silicone around the coolant passages and a heavy coat of copper spray. Never a leak of any kind.
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Re: o-ringed block to flat surface head
[Re: dart games]
#2630946
03/09/19 11:34 PM
03/09/19 11:34 PM
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Joined: Aug 2003
Posts: 43,123 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,123
Bend,OR USA
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I have used new solid copper head gaskets on a block like yours (between .015 up to and around .022 O ring above the decks)with .045 thick gaskets with no issues from SCE before they offered their titan series with the Teflon embossed option around the coolant holes. At that time they said it would be better to have the receiver groove, especially when above .022 positive on the O ring. Do you have the head gaskets yet? If not I would order them in .045 thick and exactly the same size as the bore size, maybe .007 to .015 bigger diameter over all
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: o-ringed block to flat surface head
[Re: dart games]
#2631065
03/10/19 12:16 PM
03/10/19 12:16 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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have a o-ringed block and heads that has no receiver grooves,can I get by with using copper gaskets or do I need receiver cut heads,this will be a non blown,no nos wengine,will be ran on race gas The best fix is to either cut recover grooves in the heads (I actually run the wire in the head and use the block as the receiver) or pull the wires out of the block, fill the grooves with JB weld and file it off and run some MLS gaskets or if the compression is low enough (under 12:1) use a Fel-Pro gasket and be done with it. It's NEVER correct to use an O-ring without a receiver groove. I know it's done, but that doesn't make it correct. It's wrong and guys pay because it becomes hard to seal oil and water leaks. The copper has to be displaced and if there is nowhere for it to go, it will hold the block off of the head.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: o-ringed block to flat surface head
[Re: dart games]
#2631082
03/10/19 01:17 PM
03/10/19 01:17 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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I would suggest a razor blade on the JB
live every 24 hour block of time like it's your last day on earth
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Re: o-ringed block to flat surface head
[Re: RapidRobert]
#2631119
03/10/19 02:57 PM
03/10/19 02:57 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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I would suggest a razor blade on the JB RR is correct in that you can use a razor blade if you don't let the JB weld set up fully. That's actually the easiest, cleanest best way to do it.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: o-ringed block to flat surface head
[Re: B1duster]
#2633758
03/17/19 04:26 PM
03/17/19 04:26 PM
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Joined: Mar 2006
Posts: 1,229 In The Hills
jughed
pro stock
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pro stock
Joined: Mar 2006
Posts: 1,229
In The Hills
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I ran an Oringed megablock with copper gaskets and 440-1 heads with no receiver groove, with a 200 shot, for a few years with no problems at all. I used a little red silicone around the coolant passages and a heavy coat of copper spray. Never a leak of any kind.
about the same here. O-ringed Mega Block, no grooves in the 440-1s, 13.5/1, SCE Copper gaskets, Hylomar for coolant passages...no NOS. Trouble free.
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