which head gasket? and valve question
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which head gasket? and valve question

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    Aquacraft Eddie's Avatar
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    Default which head gasket? and valve question

    I got my motor apart or semi apart , again ..... damn it ..... wondering which head gasket to go with ? its a 454, 0.030 over with 781 heads and 22cc dome pistons, it had felpro gaskets and seemed ok, maybe a couple of spots looked like it may have leaked a little compression but hard to tell, machine shop thinks it was ok. I have heard good things about cometic but I have only used cometic on motorcyles not cars and have had good experience with them but never used them on a car, this is not a race motor I just want good sealing gaskets,,,felpro mls or perma torque? I saw the cometic mls gaskets but I'm not sure my deck surface is smooth enough but I'm trying to use a scraper and razor blade to get all the stuff off, also used a dremel tool with a wire wheel which I think should be ok,,,,,so felpro ? just want good sealing this is not a crazy motor and also the machine shop says I need new valves and they want to use si, or engine tech valves? never heard of them but they say they are good oe replacement valves , any body use them ? I think they are about 130.00 for all 16 valves and they are supposedly made in argentina? seems kinda cheap but again this is a basically stock motor , thanks guys

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    Senior Member jockorace's Avatar
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    You will be fine with the Fel-Pro head gaskets for your application. I believe the P/N is 1017. As far as those valves.......as the old saying goes, ya get what ya pay for! Jocko

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by Eddie View Post
    I got my motor apart or semi apart , again ..... damn it ..... wondering which head gasket to go with ? its a 454, 0.030 over with 781 heads and 22cc dome pistons, it had felpro gaskets and seemed ok, maybe a couple of spots looked like it may have leaked a little compression but hard to tell, machine shop thinks it was ok. I have heard good things about cometic but I have only used cometic on motorcyles not cars and have had good experience with them but never used them on a car, this is not a race motor I just want good sealing gaskets,,,felpro mls or perma torque? I saw the cometic mls gaskets but I'm not sure my deck surface is smooth enough but I'm trying to use a scraper and razor blade to get all the stuff off, also used a dremel tool with a wire wheel which I think should be ok,,,,,so felpro ? just want good sealing this is not a crazy motor and also the machine shop says I need new valves and they want to use si, or engine tech valves? never heard of them but they say they are good oe replacement valves , any body use them ? I think they are about 130.00 for all 16 valves and they are supposedly made in argentina? seems kinda cheap but again this is a basically stock motor , thanks guys
    For your type of build, I would probably use Fel Pro marine head gaskets. Valves should be stainless severe duty, rather than just standard replacements.

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    Aquacraft Eddie's Avatar
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    thanks guys! that's what was worrying me , never heard of s.i. but both shops here say they are good,, I'm going with the felpro any reason why marine and not just regular?

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by Eddie View Post
    thanks guys! that's what was worrying me , never heard of s.i. but both shops here say they are good,, I'm going with the felpro any reason why marine and not just regular?
    Yes, because it's a marine engine, no antifreeze, and you don't want them to rust. The 1017's would work, but they are 4.500" bore "steel core laminate" and the 17040 marine gasket is 4.370" bore "stainless steel core laminate, more suitable for 454 type engines and variations, and about $10 each cheaper,, listed as an "mls composition" type gasket.

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by Eddie View Post
    thanks guys! that's what was worrying me , never heard of s.i. but both shops here say they are good,, I'm going with the felpro any reason why marine and not just regular?
    Once again, not just a stainless steel valve, you should spend the money to get "severe duty" stainless.

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    Aquacraft Eddie's Avatar
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    Quote Originally Posted by obnoxious001 View Post
    Once again, not just a stainless steel valve, you should spend the money to get "severe duty" stainless.

    Thank you!,, makes sense on the gasket being stainless and the s.i. valves are stainless but not severe duty so ill look into that,,,also just curious if its ok to use a dremmel tool with a stainless wire wheel to clean the deck surface of the block? before I put the heads back on? I used a razor scraper and carb cleaner then I used a dremmel to get the hard stuff off , not a drill or anything crazy just the small wire wheels that dremmel has..i was told by one of the shop guys not to use any type of rotary tool on it, but I taped everything off and figured the wire wheel wouldn't put any waves in the cast iron deck, or mess with the mating surface but just want to know what you guys think? I used to do this on motorcycle stuff and figured it wouldn't hurt on this,, also what head bolt sealant do you use? I was going to use the permatex white stuff in the little tube, thread sealant for the head bolts but it seems everyone says something different?
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    Last edited by Eddie; 08-16-2016 at 07:23 PM.

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    Aquacraft Eddie's Avatar
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    I know its not perfect , just trying to do it on a budget the best I can......

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    Aquacraft Eddie's Avatar
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    Quote Originally Posted by obnoxious001 View Post
    Yes, because it's a marine engine, no antifreeze, and you don't want them to rust. The 1017's would work, but they are 4.500" bore "steel core laminate" and the 17040 marine gasket is 4.370" bore "stainless steel core laminate, more suitable for 454 type engines and variations, and about $10 each cheaper,, listed as an "mls composition" type gasket.
    what about the 17046 printoseal? or is that more for racing and tearing an engine down often ? just curiuos

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    Quote Originally Posted by Eddie View Post
    what about the 17046 printoseal? or is that more for racing and tearing an engine down often ? just curiuos
    Why do you want to use one that costs $19 each more than the ones I suggested? You just told me you were on a budget, I don't think there is a difference in performance.

    I use Rector Seal from the hardware store for head bolts and studs, and any pipe threads, but am sure the Permatex is fine.

    That little Dremel wire wheel is likely not tough enough to do much damage to surface, but you do not want low spots. Much better with some kind of long, flat sander if you don't want to tear the block down and have it surfaced. I don't like any kinds of abrasives or metal materials near an engine that is being put together, and don't really trust tape to keep it out. I would probably just use razor blades and aerosol carb cleaner on white paper towels, so it's easy to see the dirt that comes off, as well as any bits of the white towel that may end up on the block.

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    Aquacraft Eddie's Avatar
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    Thanks , I just wasn't sure what the difference is in the printoseal vs the other ones , I'm going with the 1st ones , thank you for the advice and that was my only concern was getting low spots or having some wires end up in the motor , the machine shop said it didn't need to be decked and said I didn't need to take it down so I'm just trying to find the best way to clean it , last time I did a motor the shop here took it down and cleaned the deck up , but they retired and that was more than 20 years ago not sure about the shops now but I am trying to save money and I got what your saying about the razor blade and cleaner that's what I started with and have done in the past but some of this stuff is really on there almost like the shop that out it together didn't clean it right the first time or maybe I did have a leaking head gasket because one side is way worse than the other oh well back to the razor , thanks !

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