Head Gasket Opinions ??
Thread Starter
Racer
Joined: Oct 1999
Posts: 270
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From: Phoenix, AZ, USA
Head Gasket Opinions ??
I've slowly been putting together parts for a few performance upgrades, including a cam and new heads. After porting and milling the heads I ended up with a 63cc chamber, a few more than the stock 58cc's. I'd like to get some more of that back, without further milling the heads.
I became aware of a Felpro gasket that compresses to .015 vs. the usual .039-.041, this would lead to an almost 6 cc recovery. Seems to be just what the doctor ordered, but I'm not sure there isn't a catch.
Material longevity? Likelyhood of a bad seal to the block ?
Anybody with any thoughts or insight to share
Thanks
I became aware of a Felpro gasket that compresses to .015 vs. the usual .039-.041, this would lead to an almost 6 cc recovery. Seems to be just what the doctor ordered, but I'm not sure there isn't a catch.
Material longevity? Likelyhood of a bad seal to the block ?
Anybody with any thoughts or insight to share
Thanks
Melting Slicks
Joined: Jan 2002
Posts: 2,238
Likes: 4
From: Milan
You posted the same question I want to post...
I'm in the same boat...
Now I have a felpro 1010 (.039 compressed) with an added volume to combustion chamber of 8.9cc
Mr gasket part 1134 is a gasket of compressed 0.028 thick with 6,1 cc added volume compressed.
8.9-6.1 = 2,8cc .
I'm starting fom 62 cc so a near 3cc reduction should good for me.
The real problem is to use a gasket made for a iron block and an aluminum head.
I know that Felpro 1010 (.039 compressed) are good for this...
It seems also that Mr gasket part 1134 is good for aluminum heads...
Copper gaskets semms NO good to match an iron block to an aluminum head...
Some guru can chime in?
-Beppe-
I'm in the same boat...
Now I have a felpro 1010 (.039 compressed) with an added volume to combustion chamber of 8.9cc
Mr gasket part 1134 is a gasket of compressed 0.028 thick with 6,1 cc added volume compressed.
8.9-6.1 = 2,8cc .
I'm starting fom 62 cc so a near 3cc reduction should good for me.
The real problem is to use a gasket made for a iron block and an aluminum head.
I know that Felpro 1010 (.039 compressed) are good for this...
It seems also that Mr gasket part 1134 is good for aluminum heads...
Copper gaskets semms NO good to match an iron block to an aluminum head...
Some guru can chime in?
-Beppe-
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Originally Posted by conv90
You posted the same question I want to post...
I'm in the same boat...
Now I have a felpro 1010 (.039 compressed) with an added volume to combustion chamber of 8.9cc
Mr gasket part 1134 is a gasket of compressed 0.028 thick with 6,1 cc added volume compressed.
8.9-6.1 = 2,8cc .
I'm starting fom 62 cc so a near 3cc reduction should good for me.
The real problem is to use a gasket made for a iron block and an aluminum head.
I know that Felpro 1010 (.039 compressed) are good for this...
It seems also that Mr gasket part 1134 is good for aluminum heads...
Copper gaskets semms NO good to match an iron block to an aluminum head...
Some guru can chime in?
-Beppe-
I'm in the same boat...
Now I have a felpro 1010 (.039 compressed) with an added volume to combustion chamber of 8.9cc
Mr gasket part 1134 is a gasket of compressed 0.028 thick with 6,1 cc added volume compressed.
8.9-6.1 = 2,8cc .
I'm starting fom 62 cc so a near 3cc reduction should good for me.
The real problem is to use a gasket made for a iron block and an aluminum head.
I know that Felpro 1010 (.039 compressed) are good for this...
It seems also that Mr gasket part 1134 is good for aluminum heads...
Copper gaskets semms NO good to match an iron block to an aluminum head...
Some guru can chime in?
-Beppe-
i too would like info about this, i have the TFS 30400007 heads that are 62 CC, I was thinking of milling them down to 58CC and going with a thinner gasket, or leaving the 62CC and going with a thinner gasket?
it's a toss up....
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Originally Posted by conv90
You posted the same question I want to post...
I'm in the same boat...
Now I have a felpro 1010 (.039 compressed) with an added volume to combustion chamber of 8.9cc
Mr gasket part 1134 is a gasket of compressed 0.028 thick with 6,1 cc added volume compressed.
8.9-6.1 = 2,8cc .
I'm starting fom 62 cc so a near 3cc reduction should good for me.
The real problem is to use a gasket made for a iron block and an aluminum head.
I know that Felpro 1010 (.039 compressed) are good for this...
It seems also that Mr gasket part 1134 is good for aluminum heads...
Copper gaskets semms NO good to match an iron block to an aluminum head...
Some guru can chime in?
-Beppe-
I'm in the same boat...
Now I have a felpro 1010 (.039 compressed) with an added volume to combustion chamber of 8.9cc
Mr gasket part 1134 is a gasket of compressed 0.028 thick with 6,1 cc added volume compressed.
8.9-6.1 = 2,8cc .
I'm starting fom 62 cc so a near 3cc reduction should good for me.
The real problem is to use a gasket made for a iron block and an aluminum head.
I know that Felpro 1010 (.039 compressed) are good for this...
It seems also that Mr gasket part 1134 is good for aluminum heads...
Copper gaskets semms NO good to match an iron block to an aluminum head...
Some guru can chime in?
-Beppe-
what heads do u have? and do u have any other pics of those fat tires of yours? and what rims are they on? and do they fit well?
Melting Slicks
Joined: Oct 2000
Posts: 2,019
Likes: 2
From: Na
I will be using a pair of Victor Reinz Nitroseal gaskets #5746 when my new engine comes together. They have a .029 compressed thickness and are made for iron blocks using alum. heads. Same gaskets Lingenfelter uses on their SBC engines. Any Napa store should carry them. 
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Originally Posted by NUckINg FuTS
I will be using a pair of Victor Reinz Nitroseal gaskets when my new engine comes together. They have a .029 compressed thickness and are made for iron blocks using alum. heads. Same gaskets Lingenfelter uses on their SBC engines.
have a link to these? and since my heads are 62CC, what would this drop me down to with the .029 over the stock .051 i think it is.....
Melting Slicks
Joined: Jan 2002
Posts: 2,238
Likes: 4
From: Milan
Originally Posted by 88BlackZ-51
i too would like info about this, i have the TFS 30400007 heads that are 62 CC, I was thinking of milling them down to 58CC and going with a thinner gasket, or leaving the 62CC and going with a thinner gasket?
it's a toss up....
it's a toss up....
....... TFS 30400007 heads too!
I think that to do a GOOD milling you should disassemble the head, perform the milling with the appropriate machine, and then CLEAN it perfectly, and then reassemble .
If I was buying the CNC version with 64 cc, the milling of the heads is a must...
I prefer to buy the ready to install 62cc NO CNC chambers and the thinner gaskets.
I will go with thinner gaskets to gain 3 or 4 cc .
The right thikness with a bore of 4.130-4.166 will be a .022"-.026" to correct the +4cc of the TrickFlow heads.
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Originally Posted by conv90
I'm planning to use ......
....... TFS 30400007 heads too!
I think that to do a GOOD milling you should disassemble the head, perform the milling with the appropriate machine, and then CLEAN it perfectly, and then reassemble .
If I was buying the CNC version with 64 cc, the milling of the heads is a must...
I prefer to buy the ready to install 62cc NO CNC chambers and the thinner gaskets.
I will go with thinner gaskets to gain 3 or 4 cc .
The right thikness with a bore of 4.130-4.166 will be a .022"-.026" to correct the +4cc of the TrickFlow heads.
....... TFS 30400007 heads too!
I think that to do a GOOD milling you should disassemble the head, perform the milling with the appropriate machine, and then CLEAN it perfectly, and then reassemble .
If I was buying the CNC version with 64 cc, the milling of the heads is a must...
I prefer to buy the ready to install 62cc NO CNC chambers and the thinner gaskets.
I will go with thinner gaskets to gain 3 or 4 cc .
The right thikness with a bore of 4.130-4.166 will be a .022"-.026" to correct the +4cc of the TrickFlow heads.
i am thinking of the 0.028 gaskets that were used on the iron head L-98's.....
mine heads come in tomorrow, can't wait to see them. our stock gasket is 0.051 correct? so using the 0.028 would knock it down 5 CC to 57CC, would that be correct?
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Melting Slicks
Joined: Jan 2002
Posts: 2,238
Likes: 4
From: Milan
Originally Posted by 88BlackZ-51
i am thinking of the 0.028 gaskets that were used on the iron head L-98's.....
mine heads come in tomorrow, can't wait to see them. our stock gasket is 0.051 correct? so using the 0.028 would knock it down 5 CC to 57CC, would that be correct?
mine heads come in tomorrow, can't wait to see them. our stock gasket is 0.051 correct? so using the 0.028 would knock it down 5 CC to 57CC, would that be correct?
..So the .028" ones you are refferring (IRON HEADS) I don't think are the correct ones to use with ALUM heads.
Mister Gasket /Accel #1134 I think are the correct (0.028 multilayer).
If only TJwong can chime in...
-Beppe-
Le Mans Master
Joined: Feb 1999
Posts: 6,172
Likes: 11
From: somers, ny
I've studied this quite a bit in the past as i had the same issue you guys are having. Things may have changed since, but at the time, the .015 felpro was not recommended for alumin heads where the compression ratio would be over 10:1. Chevy made a .029 gasket that was compatible, but the edge of the gasket protruded into the combustion chamber between the cylinders and it failed after a few seasons. TPIS resells a .029 gasket as well, but i dont know who the mfr is. I know people that are using them without any problems. The Victor nitroseal is a good gasket (which i used on my 350 after blowing the GM gasket). I thought the compressed thickness was .026, but my memory aint great. If you want to spend the $, Cometic will make you a custom made stainless viton coated gasket (min thickness is around .025 tho). These are a completely different construction than the other gaskets mentioned so far as they are multi layer stainless throughout, compatible with alum and can handle crazy compression. Flatout makes coated copper gaskets that go as low as .020, but i have no experience with them. When i was researching this, it was recommended NOT to use copper on a street car (concerns over coolant leaks), but these are a new design with a coating that is supposed to stay sealed??? good luck
Last edited by ralph; Dec 16, 2004 at 12:28 PM.
Melting Slicks
Joined: Jan 2002
Posts: 2,238
Likes: 4
From: Milan
Thanks Ralph,
The Mr.Gasket I was referring are:
Top-quality head gaskets for today's performance engines.
Head Gasket, Composite Type, 4.130 in. Bore, .028 in. Compressed Thickness, Chevy Small Block, Pair
Because of the technology available in today's high-performance engines, there came a demand for more durable head gaskets. Mr. Gasket responded to this challenge by creating the Ultra-Seal lineup. They feature excellent compressibility and high-temperature endurance, while not becoming brittle or brinelling aluminum cylinder heads. Their 5-layer composite construction sandwiches the patented Grafoil core material between two steel plates for strength, and a special elastomer coating is applied to both sides for leak-proof sealing protection. In addition, they're corrosion-resistant for compatibility with all types of fuel, and they won't require retorquing.
Vendor Mr. Gasket Co.
Product Line Mr. Gasket Ultra-Seal Head Gaskets
Bore (in) 4.130
Bore (mm) (Not Specified)
Gasket Material Steel core laminate
Compressed Thickness (in) .028
Compressed Volume (cc) 6.147
Lock Wire No
Quantity Sold as a pair.
Notes (Not Specified)
The Mr.Gasket I was referring are:
Top-quality head gaskets for today's performance engines.
Head Gasket, Composite Type, 4.130 in. Bore, .028 in. Compressed Thickness, Chevy Small Block, Pair
Because of the technology available in today's high-performance engines, there came a demand for more durable head gaskets. Mr. Gasket responded to this challenge by creating the Ultra-Seal lineup. They feature excellent compressibility and high-temperature endurance, while not becoming brittle or brinelling aluminum cylinder heads. Their 5-layer composite construction sandwiches the patented Grafoil core material between two steel plates for strength, and a special elastomer coating is applied to both sides for leak-proof sealing protection. In addition, they're corrosion-resistant for compatibility with all types of fuel, and they won't require retorquing.
Vendor Mr. Gasket Co.
Product Line Mr. Gasket Ultra-Seal Head Gaskets
Bore (in) 4.130
Bore (mm) (Not Specified)
Gasket Material Steel core laminate
Compressed Thickness (in) .028
Compressed Volume (cc) 6.147
Lock Wire No
Quantity Sold as a pair.
Notes (Not Specified)
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by 88BlackZ-51
i am thinking of the 0.028 gaskets that were used on the iron head L-98's.....
mine heads come in tomorrow, can't wait to see them. our stock gasket is 0.051 correct? so using the 0.028 would knock it down 5 CC to 57CC, would that be correct?
mine heads come in tomorrow, can't wait to see them. our stock gasket is 0.051 correct? so using the 0.028 would knock it down 5 CC to 57CC, would that be correct?
RACE ON!!!
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Originally Posted by CFI-EFI
Sort of... Kind of... But not really. The cc's of the heads, is the cc's of the heads, ONLY. The gasket volume gets added in when you do the calculation for the compression ratio. Adding less cc's makes a difference, but a 62 cc head, is still a 62 cc head.
RACE ON!!!
RACE ON!!!
maybe i am missing something, with my TFS, they are 62CC, so if i went to a thinner gasket, would not bring the CC down to 58 or so?
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by CFI-EFI
Sort of... Kind of... But not really. The cc's of the heads, is the cc's of the heads, ONLY. The gasket volume gets added in when you do the calculation for the compression ratio. Adding less cc's makes a difference, but a 62 cc head, is still a 62 cc head.
Originally Posted by 88BlackZ-51
maybe i am missing something, with my TFS, they are 62CC, so if i went to a thinner gasket, would not bring the CC down to 58 or so?
RACE ON!!!
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Originally Posted by CFI-EFI
What you are missing, is reading the post you quoted. The HEADS are 62 cc's. If you use them with .051" gaskets the HEADS are 62 cc's. If you use them with a .028" gaskets then the HEADS are 62 cc's. If you use them with .019" gaskets the HEADS are 62 cc's. Since the cc's of the HEADS is the cc's of the HEADS ONLY, you can't change the cc's of the HEADS by changing the gaskets.
RACE ON!!!
RACE ON!!!
i am talking about CC recovery......i do know that a 62 CC head is a 62 CC head.......listen, i am learning one day at a time CFI-EFI!!! Relax!!
the heads i bought are 62CC, i want to bump it down to 58CC to keep my CR, what size gasket will do this for me? maybe that is a better question.
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Originally Posted by 88BlackZ-51
maybe i am missing something, with my TFS, they are 62CC, so if i went to a thinner gasket, would not bring the CC down to 58 or so?
Bore
Stroke
Connecting Rod Length
Cylinder Head Volume
Deck Height
Head Gasket Bore
Head Gasket Thickness
Piston to Cylinder Wall Clearance
Top Ring Land Height
Piston Dome Volume
...and used to calcuate compression ratio.
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Originally Posted by 88BlackZ-51
the heads i bought are 62CC, i want to bump it down to 58CC to keep my CR
Take your original gasket bore and thickness, calculate the volume. Then find a gasket that is 4cc less.
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Originally Posted by scorp508
No, gaskets change the overall setup which is made up of....
Bore
Stroke
Connecting Rod Length
Cylinder Head Volume
Deck Height
Head Gasket Bore
Head Gasket Thickness
Piston to Cylinder Wall Clearance
Top Ring Land Height
Piston Dome Volume
...and used to calcuate compression ratio.
Bore
Stroke
Connecting Rod Length
Cylinder Head Volume
Deck Height
Head Gasket Bore
Head Gasket Thickness
Piston to Cylinder Wall Clearance
Top Ring Land Height
Piston Dome Volume
...and used to calcuate compression ratio.
that sounds even more confusing to me......great!!
what is the stock thickness of a 1988 gasket? all being equal, if i was too take off my 113's and put on the TFS with the 62CC, should i go with a thinner gasket? and if so what would that change?
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Originally Posted by scorp508
You can't do what you are articulating, this is what he means. Your heads are going to stay 62cc. This means you want to remove 4cc from the rest of your setup, not the heads.
Take your original gasket bore and thickness, calculate the volume. Then find a gasket that is 4cc less.
Take your original gasket bore and thickness, calculate the volume. Then find a gasket that is 4cc less.
yah, i am dumb!