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05-26-2019, 02:14 PM | #1 |
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53 Mercury Intake Guide Seals?
I didn't put them in there. Was such a pain on my first engine, that I even bent a valve and had to buy another.........that engine runs great.
This 53 was kind of a quickie: hone, rings, lap the valves, new bearing shells. It's all assembled, but not started yet. I spun it up with the starter, 50 pounds oil pressure right away. I left out those awful square section rubber seal rings, but then I also forgot to smear the guides with some kind of sealer like I think Ron does. Now I'm wondering whether to be concerned, Murre mentioned finding round o-rings. Engine's on my bench, so trying to decide if I should pull 8 assemblies out and do something, Now would be the time, they'll come out easy. All this is because I read something here about oil being sucked up through there and I don't know how long that could last till things got crudded up and sealed themselves. And I like to know how well I did right soon after I fire her the first time. Any thoughts appreciated, thanks!! |
05-26-2019, 02:32 PM | #2 |
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Re: 53 Mercury Intake Guide Seals?
That is the purpose of the seals, to control oil being pulled around the guides.
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05-26-2019, 03:27 PM | #3 | |
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Re: 53 Mercury Intake Guide Seals?
Quote:
Ronnieroadster
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05-26-2019, 05:28 PM | #4 |
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Re: 53 Mercury Intake Guide Seals?
What worked for me was to fabricate a wooden dowel to hold the seal while creating a chamfer on the leading edge of the seal with a belt sander (or any other method)
Eliminated any 'shearing' for me.
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05-26-2019, 06:01 PM | #5 |
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Re: 53 Mercury Intake Guide Seals?
Put them in NOW to avoid problems later.
It will never be easier to install them than it is now. |
05-26-2019, 07:39 PM | #6 |
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Re: 53 Mercury Intake Guide Seals?
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Those dam square ones were a b*tch on the first engine........and I'm good at this kind of thing. I whittled a little chamfer like 51 Merc says, helped some. At the time, I looked for nice fat normal o-rings but never did find anything that seemed good enough. Soon as I get a couple other projects done I'm back on this 53 to put the seals in. Thanks! |
05-26-2019, 08:40 PM | #7 |
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Re: 53 Mercury Intake Guide Seals?
Yes, it will pull oil around the guides. I don't know the o-ring size/part number.
Red's has them, $10 a set. http://reds-headers.net/index.php?ma...roducts_id=486 Last edited by JSeery; 05-26-2019 at 09:11 PM. |
05-26-2019, 09:12 PM | #8 |
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Re: 53 Mercury Intake Guide Seals?
The Best gasket set comes with the o ring style seals , They are easy to install compared to the square shoulder seals. Lube either style when installing .
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05-26-2019, 10:44 PM | #9 |
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Re: 53 Mercury Intake Guide Seals?
i do as 51 Merc does. I just hit the edge with the wire wheel on my bench grinder. A little lube and they go in without a problem.
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05-27-2019, 01:51 AM | #10 |
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Re: 53 Mercury Intake Guide Seals?
If you dont put them in, they will suck oil in,Then the carbon will build up on top of the piston and head and then the next thing you will have a noise like hammers tied to the crankshaft,ask me I know.
Lawrie |
05-27-2019, 02:39 AM | #11 |
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Re: 53 Mercury Intake Guide Seals?
Okay, I'm doin it.
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05-27-2019, 07:41 AM | #12 |
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Re: 53 Mercury Intake Guide Seals?
Haven't used the seals for the past 50 years. Just a little RTV and your good to go. However, if it makes you feel better put in the seals. Just remember Ford didn't use any seals before 49 on the split guides.
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05-28-2019, 07:21 AM | #13 |
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Re: 53 Mercury Intake Guide Seals?
Mtt
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05-28-2019, 08:50 AM | #14 |
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Re: 53 Mercury Intake Guide Seals?
Besides the potential oil getting sucked into the intake tract, think about the air that can get sucked in, creating an internal vacuum leak.
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05-28-2019, 09:04 AM | #15 |
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Re: 53 Mercury Intake Guide Seals?
That's what's called Positive Crankcase Ventilation (PCV), without the modern plumbing
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DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES Last edited by 51 MERC-CT; 05-28-2019 at 10:29 AM. |
05-28-2019, 03:06 PM | #16 |
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Re: 53 Mercury Intake Guide Seals?
I was afraid Ol' Ron had just killed the whole thread! If I had smeared something on those guides, I'd give it a try. But I forgot. I haven't torqued the heads yet on this engine, no coppercoat or anything so I'll have at it.
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05-28-2019, 03:08 PM | #17 |
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Re: 53 Mercury Intake Guide Seals?
I wanted to buy the o-rings from Red's, but I got at least 20 of the dam square rings here so I'll force those bastards in there.
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05-28-2019, 03:32 PM | #18 |
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Re: 53 Mercury Intake Guide Seals?
Even the round o-rings from Red's can be real stubborn to get in. I found that by shaving 1/32" off of the quadrant facing the intake manifold they were much easier to install.
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05-28-2019, 04:11 PM | #19 |
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Re: 53 Mercury Intake Guide Seals?
Bevel the square edges.
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05-28-2019, 04:29 PM | #20 |
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Re: 53 Mercury Intake Guide Seals?
The reason the PVC works: is because the clearance between the guide and the bore is very small a few thou at most. The PVC covers this in a small film and hardens some. It also adheres to the guide and bore sealing it. Now comes the best part. It never hardens. One day I was changing a cam for the stockcar and the rubber guide seals were in bad shape and I didn't have any new ones. So I put some PVc on the guides and ran the engine. After the season I tore the engine down and the valves came out very easy and you could see the way it sealed the area. After that I never used the seals, and never will. The reason Ford used them in the first place was PVC wasn't available when the new guides were designed. Today most engine are sealed with a sealant of some kind instead of a gasket. And besides. I'm pretty Lazy.
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