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Head gaskets--Fel-Pro or Cometic

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View Poll Results: Which head gskt should I use ??
Fel-Pro 17048
44
27.85%
Cometic
101
63.92%
Other brand ??
13
8.23%
Voters: 158. You may not vote on this poll

Head gaskets--Fel-Pro or Cometic

Old 03-03-2005, 08:36 PM
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Default Re: Head gaskets--Fel-Pro or Cometic

What bore size gasket should I use on a 4.53 bore?
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Old 03-03-2005, 09:13 PM
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Default Re: Head gaskets--Fel-Pro or Cometic

GPM: Thanks very much for this info.
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Old 03-03-2005, 10:06 PM
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Default Re: Head gaskets--Fel-Pro or Cometic

Originally Posted by Swede
What bore size gasket should I use on a 4.53 bore?

4.540 or larger
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Old 03-03-2005, 11:58 PM
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Default Re: Head gaskets--Fel-Pro or Cometic

I have heard that the Cometic gaskets are re-usable----anyone know if that is true or not or just a rumor/tale?
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Old 03-04-2005, 02:20 AM
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Default Re: Head gaskets--Fel-Pro or Cometic

Originally Posted by Cole-One
Ok guys now that I'm past my panic attack Ijust got off the phone with the Cometic tech department 1-800-752-9820 I did get the right ones. Merlin III blocks with Merlin heads uses #C5331 / H1175 gaskets & no right or left . If this is wrong please tell me! I just put one back in & the other is on the stand. I put the heads back on last night!!!!!!!
Maybe one of your bearings are in upside down?? Or did you forget to torque a rod bolt? I'm sure you may need to check these items
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Old 03-04-2005, 07:27 AM
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Talking Re: Head gaskets--Fel-Pro or Cometic

Easy greasy my **** breaks I'm riden' with you!
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Old 03-04-2005, 07:56 AM
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Default Re: Head gaskets--Fel-Pro or Cometic

How about, Cometic or, O-Ringed Block and Copper Gasket?
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Old 03-04-2005, 08:07 AM
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Default Re: Head gaskets--Fel-Pro or Cometic

Originally Posted by TomFTM
I have used the felpro MLS gaskets . There part # is 1075 for big block large bore . 4.570 . Tom
Do these gaskets have the steam holes in the back their talking about?
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Old 03-04-2005, 08:41 AM
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Default Re: Head gaskets--Fel-Pro or Cometic

Originally Posted by Cole-One
Easy greasy my **** breaks I'm riden' with you!
I have you disassembling this by today.
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Old 03-04-2005, 11:50 AM
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Default Re: Head gaskets--Fel-Pro or Cometic

Fel pro makes 2 of the BBC metal head gaskets . the 1075 and I use the 1075-1 its for the thicker with a volume of 14.6. Ck out my thread on the Hustler build up there are some picks of them there . I have no experience with the cometic . I have heard good things .If I did not get the Fel Pro stuff for free I might? of tried the cometic's.

As far as the loc wire gaskets . Nobody really uses or needs to use them anymore just ask Fel pro teck .!800-325-8886.The MLS has been in there line for awhile and they said Nascar has been using them over the lock wire .They even sent me a set to try in the late 80's and I never did.

My connection with Fel Pro is when they came out with the Loc Wire I was doing some R&D with them on some NOS motors. I would run them and send them back for them to look at . They where tuff I never blew one, but hurt alot of parts though FelPro says the MLS is stronger than there lock wire gaskets.

Ck out the directions on the box ,They don't even want finger prints on the gasket surface . There is a sticky coating that attracts everything. They want a ra of 40-50. thats smooth

For the gen 6 stuff
They offer a top end kit 17207 comes with a 17048 head gasket for a bore up to 4.550.

The bottom end kit is a 17146 and come with the good one piece oil pan gasket.



The MLS 1075 is a .041 thick with a 4.580 bore
the 1075-1 is a .053 thick with a 4.580 bore

The new small block chevy stuff is a
1142 .041 thick with a 4.100 bore
1143 .041 thick with a 4.165 bore
1144 .041 thick with a 4.200 bore

Hope this helps
Rob
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