rickyellow zee Posted April 17, 2014 Share Posted April 17, 2014 Im replacing the intake /exhaust manifold gasket on my L28ET with a Felpro paper/metal/paper gasket. I have had the exhaust mani resurfaced so its flat as a pancake. Is it a good idea to use the copper spray gasket sealer on the gasket prior to installation? Ive heard lots of horror stories of people using Felpro gaskets but have also heard allot of good reviews on these gaskets. The mating surfaces are flat and clean. Thanks very much! Rick Quote Link to comment Share on other sites More sharing options...
skirkland1980 Posted April 22, 2014 Share Posted April 22, 2014 Those gaskets don't seal very well so yes copper spray may help. Quote Link to comment Share on other sites More sharing options...
AkRev Posted April 22, 2014 Share Posted April 22, 2014 This topic is a double post. Here is what I posted in the other thread. http://forums.hybridz.org/topic/117722-felpro-gasket-question/ That is a loaded question. Yes, you state that your surfaces are flat and clean, but at what finish? Your prep of the surface really dictates what type of gasket and products you can use (or should). Most of the horror stories could be explained by three things; No prep work, too harsh of prep work from machine shops, and my favorite, those that use fine grit sandpaper to prep the surface. http://www.frontiern...meyer/fpro.html Based on assumptions, I would say not needed. Assumptions; prep is within spec, new gasket, and gasket is designed to be used without the copper spray. Quote Link to comment Share on other sites More sharing options...
Xnke Posted April 22, 2014 Share Posted April 22, 2014 Hit it with copper rtv on the exhaust side and torque properly and you will have no problems...copper spray I have never had work for me, but the rtv works on the head flange. Improper torque will let it burn out no matter what sealant you use. Quote Link to comment Share on other sites More sharing options...
rickyellow zee Posted April 24, 2014 Author Share Posted April 24, 2014 I cleaned the head with a wire wheel and then I used some fine steel wool. I then used some acetone to clean the surface to get any oil residue off. From the link above.... Intake Manifold Gasket InstallationMost Fel-Pro performance intake gaskets are designed without a metal core, to allow port trimming. Gaskets must be firmly adhered to the cylinder head to avoid possible gasket movement. Attach intake manifold gaskets to cylinder heads with a firm-setting contact adhesive. Be sure to use it around intake and water ports. Allow it to dry thoroughly before trimming the gasket and permanently installing the manifold. However, you may temporarily install the manifold to help locate the gaskets while the adhesive is drying. This procedure is especially important on large port heads with narrow walls between ports So it say to use contact adhesive but this is for paper gaskets. Mine is paper, metal, paper. I guess it cany hurt to use some of the spray as its tacky and will do just a fine job as an adhesive. Quote Link to comment Share on other sites More sharing options...
AkRev Posted April 25, 2014 Share Posted April 25, 2014 Use the contact adhesive. Quote Link to comment Share on other sites More sharing options...
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