manifolds and 40IDAs. Furthermore, do you use sealant on cork gaskets? Also, use it on the outside diameter of all pressed-in seals. Dellrose, TN. Once the gasket on the intake/exhaust manifold is set you should have anywhere from 15-18 steady needle inches of vac if not more. Most cars use a type of engine known as “fuel combustion,” which basically means that they get their main energy from a series of mini-explosions powered by gasoline. You shouldn't need to use sealant on the gaskets. is it ok to use sealant instead of replacing a gasket on a slipped intake manifold gasket. 92 months. Equally important, the intake manifold and head surfaces must be clean (no grease, oil or coolant film) and dry. In all my LC's I have installed a vac gauge and use that as my primary tune-up and engine monitor. All the intake manifold gaskets leaked, some more so than others, and tightening the bolts did not help much. 2) Apply a thin coat of RTV on the intake side of the gasket and on the intake itself. He noticed I was not going to use any sealant on the exhaust gasket or the intake manifold and just install them bare with anti-sieze on the bolts and said I should have used the gold heat sealant on both of them. The following is a list of these gaskets and how they should be aligned: 4 Slot open style gasket used in Mercruiser application during the mid-90’s and allows for full coolant flow from the manifold into the riser. Don't like to use it on the intake gaskets. bearman68. ThirtySixHundred #882584 Fri Sep 14 2012 11:54 AM. Sealant: Cork and composite gaskets can seal a variety of underhood applications. Putting the exhaust manifolds on my 289 with metal gaskets. Also, the carb kit that I have came with two identical gaskets that appear to go between the carb and intake manifold, but I don't see the need for two of them. Sealant. It's very rare that you would use any sealer on intake gaskets. I've got the 12 pack of gaskets sitting in the garage and I want to make sure there are no air leaks upon reassembly. The Hayne's repair manual for my 1990 F150 makes no mention of using any gasket sealer on the intake manifold gaskets, except at the corners. Friends, Received my Edelbrock 7521 (Airgap) manifold and Edelbrock 7220 gasket set. let set about 10 -15 and put intake on. The manifold gasket in the head set appears to be made of graphite over metal. 3) Place manifold on engine (using four studs for alignment). Was thinking of spraying them with Permatex High Temp Copper spray sealer- Yay or Nay? If you have a good gasket and good mating parts, sealant shouldn't be necessary. Joined: Feb 2004. If so, what type should i use or avoid? Use a light engine oil on the Head Bolts also . Soon, will be putting on the intake manifold. As a general rule, sealant is used on all gaskets---EXCEPT reed plate, intake manifold, anything to do with the carburetors or where it would foul a fuel passage. Most exhaust manifold gaskets either come with their own sealant (like Fel-Pro's do with the silver looking stuff), or they are metal and don't require it either. Install using the “Copper Gasket Sealant Spray” the local auto parts sells. Should I use a sealant on intake manifold gaskets? One of the parts places here … If so, what kind (ie, name brand)? Should I use gasket sealer on a combination intake and exhaust manifold gasket? We could just as easily name this part “sRaging Opinion in a Small Tubes” given this is the one area where everyone seemed to have a different opinion. RTV, other sealants or adhesives should not be used around the coolant or intake ports on carrier-style gaskets. Nissan recommends: Use Genuine RTV Silicone Sealant Part No. Also, should I worry about cleaning the engine enamel off the mating surfaces on the head side? That’s the gasket set. Set your gaskets in place and slowly lower the intake down into place and tighten it up. Same question- Use sealant on the metal gaskets? With Felpro "Printoseal" intake gaskets, (with the blue sealing rings), ... is it ok to use Hylomar sealant? Photo 2 – The cylinder head mating surface must be clean, smooth and not pitted before the intake manifold is installed. Sometimes you put a small dab in the corners where it bolts to the heads on V-6 or V-8 engines, right at the "v" where the manifold meats the front and back of the head. Normally one does not use a sealant to remount the intake manifold. 999MP-A7007 or equivalent . And second question: Do I need to use a thread sealant on the intake bolts? And then seperately I bought the metal valley pan gasket. Never put sealant on manifold gaskets,if anything a smear of grease. Well, each to … You would be surprised what you can tell whats going on with a motor with just a vac gauge! with copper spray and rtv set up time the gasket should remain in place. Always done it this way and never had an intake oil leak. Photo 3 – I do not recommend a silicon type sealant on the intake manifold. Thursday 3rd October 2013. Me and my '53! It is a thin layer of sealant, apply to the head and the intake with your gasket between and put together.That should help with coolant leakage around the gasket, but the gasket itself can still become damaged over time by the exposure to water. I will be replacing the Intake and Exhaust Manifold gaskets - should I use some type of gasket sealer? What sealant should i use? Thanks, Dave. But it's really messy stuff. Re: Sealant on manifold gasket? … Start in the middle and half tighten the bolts outward then repeat to spec (again working from the middle out). Posts: 21,446. - posted in Engine: I am having a problem in which coolant is getting into the oil. Engine machine shops have the capability to resurface the manifold. I went ahead and got the Fel-pro exhaust/manifold gasket and my neighbor who has a CJ5 came down to see what was going on. What sealant to use on intake manifold? Can I leave it out, or will this lead to problems. RTV, other sealants or adhesives should not be used around the coolant or intake ports on carrier-style gaskets. stock (32mm?) If sealant should be used, what kind do you recommend? They never did update the photos. I'd realy like to seal up this vacuum leak once and for all so the few months left of good weather in Minnesota to drive it. Boatgrunt, That is an outdated service bulletin that Don S. referred to..Merc recommends using Loctite 510 flange sealant on the manifold/riser joint. But the gasgacinch order bounced because they don't send it overseas. 2,933 posts. As far as I can see, there's no mention at all of using any sealer on the gaskets that go in between the manifold and the heads, but I've always used sealer on intake manifold gaskets and all other gaskets of every engine I've ever worked on. Re: Do I use gasket sealer for Manifold gaskets? You do not need to use RTV on the intake manifold gasket, the same as you would not use it on the head gasket itself. The type of sealant used with these gaskets depends on a variety of factors. The cork rubber ends on the intake gasket replaces the RTV. i have an altima with a ka24de, the intake manifold gasket slipped on cylinder 4 (common problem) would it be ok to use a silicon sealant instead of changing the gasket. After all you are only holding back less than 20 psi in any instance. Any ideas or feedback? Sealer? Should I put them both on, or should I only use one? The intake manifold installation instructions note ’must be used with OEM style valley pan,“ so in my view these gaskets are Edelbrock’s version of the Fel-Pro P/N 1216 gaskets. Cork/Composite Gaskets. Second, you need to consider the temperatures the sealant will have to endure. Do not add sealant if it does. I bought an edelbrock gasket set with: Intake Manifold, Exhaust Manifold, Valve Cover, Head, and Thermostat Housing Gaskets. First, you must consider if the gasket needs to remain flexible. Something I can get at a local place or what? RTV, other sealants or adhesives should not be used around the coolant or intake ports on carrier-style gaskets. It is an anerobic sealant that will only cure in the abscence of oxygen, and should … Bead from gasket to gasket about 3/16 thick make sure bead starts and ends on intake. Should do a poll at this point off the mating surfaces on the head appears... Be used around the coolant or intake ports on carrier-style gaskets,,. 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