I'm installing an intake this weekend, stock 426 Hemi, all iron, stock intake, etc. Gaskets are the Felpro's that Summit sells.

The gaskets fit well on the heads and have little hooks that connect to the ends of the front and rear self adhesive rail seals.

In the past I've used various gaskets and sealant methods and have experienced mixed results in terms of vacuum and oil leaks. Any suggestions from you guys for this go around?

I torqued mine about 10 times before it held the proper torque because the intake kept settling. I followed the pattern each time also. Tim

I agree, several re-torques over several days. Until the torque repeats over a couple of days.

I also like the gray YamaBond or Honda stuff around the ports for a little extra insurance.

And then there's the pink gaskets from Superformance.

Scott, I've tried all the different brands and went through the 'torque them until they take a set routine'. Last summer I bought a set of Super Performance gaskets. I torqued them 2-3 times and they took a set. Today,(5-5-15) I checked them again, they turned less than 1/2 turn to click my torque wrench. Throw the gaskets away and get a set of Super Performance gaskets and save yourself and your customer a lot of future headaches.Dave

Dave,

Are you just using the YamaBond on the head side of the gaskets?

If I remember right I was supposed to use some grease on the head side, I put them on dry and they still sealed better than any I've tried.Dave

Dave, who sells the Super Performance gaskets? Are these the ones you use?

Mancini

Just installed SUPERPERFORMANCE intake gaskets,hemi port was on the money.I need to retorque the intake bolts.

Scott, yep they are the ones. I bought mine from Super Performance, they are a sponsor here on Moparts. Dave

If I have a problem child, I Yamabond both sides. If there is no history of sealing issues, then YamaBond the head side and grease on the intake side.

I used the Superformance gaskets this last time (my first time with them on this) and they did torque quicker than the others. As to whether they seal better, we'll see.

I wished that it wasn't so expensive to have these things O-ringed. Last time I checked, it was $500 plus shipping. But I just might go ahead and do it on this next engine. If there is no sealing issue, then it is a waste of money. But on a problem child, it would be worth every penny. But you don't know until it's up and running.

Before you install the gaskets try using some feeler gauges on all four corners at the top and bottom of each corner to see if the intake is square to the heads If not, fix it now

Scott, you have been a help to so many here, hopefully I can help you on this one. My intake sealing problems were of the EXTREME variety! Oil consumption was 1 quart per 100 miles. I removed the intake to find that the gaskets were still sealed (silicone) to both head and intake surfaces, the oil was being sucked THROUGH the gasket! I checked for both straightness and parallel angles, both were right on. This brought me to Superformance gaskets. I first installed them dry. Oil migrated past them on both intake and head surfaces. I then studded the intake, installed new Superformance gaskets, lightly coated both sides with Hondabond and torqued them to 125 inch pounds. Problem solved.

Were you able to drop the intake down over 16 studs???

Yes, no problem.

Using silicone on most intake gaskets is big No No I found that out he hard way on my old stocker hemi motors I have used several different gasket sealers like Hylomar, Gasket Cinch and severl other avaition gasket sealers successfully on them Make sure and use it on the inside and outside edges, not just on the head and intake surfaces. IHTHs

Thanks for all the positive responses to the Superformance Hemi intake gaskets!

My recommended installation is to adhere one side of the gasket to the cylinder head or intake manifold flange surface with an adhesive, generally away from the ports. Some form of High-Tack, Weatherstrip Adhesive or other. (Sillycone is not recommended around the intake ports..... your mileage may vary.) Allow to dry before installation of the manifold so gasket does not tend to slide upon installaton or torque.

I also think applying a very thin film of White Lithium grease or the like to the opposite sealing surface of the gaskets may have some benefit of allowing the manifold to slide into place easier during the torquing procedure. I relate this to the angle of the bolts/studs relative to the sealing surface and the direction of torque load being applied.

There is NO need to coat the cut edges on any of our premium gaskets..... save that for all the inferior products on the market.

Scott I'm sure we missed the opportunity for you to use our gaskets being as you were installing the manifold this weekend but keep us in mind when it's time R&R that manifold again.

Scott, just so you know, there is no more "stand up" guy in the Mopar world than this guy.

If you don't mind may I ask where you bought the studs and nuts from???? TIA

[quote=Hemi I then studded the intake, installed new Superformance gaskets, lightly coated both sides with Hondabond and torqued them to 125 inch pounds. Problem solved. [/quote]That is two and three times more torque than the FSM calls for I remember reading to use 72 inch lbs on the center four fastener and 48 inch lbs on the outers I did learn that it takes four to seven times retorqueing them before they take a semi permenent set I also learned to retorque them several more times after getting those dang Hemiroid motors up to operating temps.

Scott, I used the exact same Fel-Pro gasket kit with factory heads and a factory intake. I had to trim the cork end seals with a razor so they would be flush with the heads in the corners. I used four small dabs of rtv sealer in the corners, and four small dots of glue on the gaskets just to hold them in place on the heads. Otherwise the gaskets were completely DRY. Torqued to factory spec 4 or 5 times.

Every gasket, including head gaskets (cometic mls), was installed dry on my Hemi. I've been daily driving/commuting with it for about 3 weeks now. My engine does NOT leak.

Most gaskets in the Fel-Pro kit needed a little bit of trimming, but if you have an attention to detail, you'll be fine. I did NOT use Fel-Pro's head gaskets, rear main side seals (pipe cleaners), or water neck gasket.