Intake Manifold Gaskets

[Mopar1973Man]

It was time to fix some of my minor boost leaks and whistling sounds coming from the old manifold gaskets. So since Lindy wasn't busy and the gasket where their at work why not? So I got a nice dry spot to work inside and all the tools I could ever want.

 

 

So I will tell you that you want to remove all the injector lines. The fuel filter has to come off (if you still have the stock fuel filter). APPS sensor has to be removed and the intake horn and grid heater of course. Take a nice sharp puddy knife and start scrapping off the old gasket. It will be baked on so take your time.

 

 

Then once cleaned up I put a very fine layer of black silicone on both sides of the gasket. Re-install the plenum. At that point its just a matter of re-assembly just the way you pull it apart. What I did was place all my bolt back in there holes but as I started installing injection lines just lift out the ones that hold something. Then replace them. 

 

 

[notlimah]

Nice! Doesn't seem to difficult and cures all the little noises! Did you just vacum out all the little bits and pieces that fell into the manifold?

 

I typically drive around with no radio on just so I can listen for new sounds that weren't there before. There's nothing more annoying then hearing something that rattle's/shake's/whistle's without you wanting it too!

[Mopar1973Man]

I just carefully picked up the larger pieces and the small one yeah you can just vacuum out.

[Yankneck696]

When I did mine, it was at the same time as my tappet cover gasket. I left the 4, 5, & 6 lines in place. I used Permatex #2 to glue the gasket with all of the bolts in place. Drilled out a piece of plywood that the bolts stuck through & weighted it down. Then, a couple hours later, I greased the bottom side of the gasket & slid it under the lines. Most important is to put sealant on the plenum bolts, as they are open to the intake & can cause a boost leak.

 

Ed

[Mopar1973Man]

Correction to Ed's post. It 3,5,6 lines which is the rear set. Where 1,2,4 is the front set.

[notlimah]

When I did mine, it was at the same time as my tappet cover gasket. I left the 4, 5, & 6 lines in place. I used Permatex #2 to glue the gasket with all of the bolts in place. Drilled out a piece of plywood that the bolts stuck through & weighted it down. Then, a couple hours later, I greased the bottom side of the gasket & slid it under the lines. Most important is to put sealant on the plenum bolts, as they are open to the intake & can cause a boost leak.

 

Ed

 

Hey Ed,

 

What bolts are you referring too? All the ones that screw into the manifold? Or are there bolts that need it and bolts that dont?

[Yankneck696]

I gooped up every bolt going into the plenum. I know some are open bottomed, not sure if all are.

Ed

[notlimah]

What sort of sealant did you use?

[Mopar1973Man]

I used Black RTV for my setup. How about you Ed?

[CUMMINSDIESELPWR]

i pulled the entire engine out to redo mine haahhaha

[Yankneck696]

To glue the cork gasket to the cover, I used Permatex #2. For the bolts, I used black RTV.

 

Ed

[notlimah]

i pulled the entire engine out to redo mine haahhaha

 

[notlimah]

I used Black RTV for my setup. How about you Ed?

 

 

To glue the cork gasket to the cover, I used Permatex #2. For the bolts, I used black RTV.

 

Ed

 

So does the RTV go on the threads or on the top of the bolt?

[Mopar1973Man]

Just the threads. I just talked to Ed on the phone and he told me about it. So if you worried about boost leaks you can put a coating of silicone on the threads.

[notlimah]

I don't have a reason to think I have a boost leak but I may do it just as a precaution