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Question

  • Thread starter Thread starter SetofAces
  • Start date Start date Aug 31, 2009
S

SetofAces

New Member
Jan 22, 2009
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SF Bay Area
Aug 31, 2009
#1
  • Aug 31, 2009
  • #1
Ah, so I lured you into my thread with my purposely vague title . . .

So, I'm redoing my intake manifold (exploder, f'd it up the first time a few months back and been living with an oil leak ever since) and I've just discovered that I don't have RTV Black silicone; all I have is the red high-temp stuff. Should I use the red sealer, or should I wait 'til morning to get some black and seal it up? BTW I'm not using the cork gaskets, just the silicone in the front and back; I need my car running by tomorrow, but I like to let the silicone cure overnight if I can . . .
 

jrichker

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#2
  • Aug 31, 2009
  • #2
Use the cork gaskets, or get a gasket set with the rubber rails. Whatever sealer you use, red, blue or black, make sure it is sensor safe.

Whatever you do, don't skimp on cleaning the gasket surfaces. New gaskets need to seat against bare metal and not the residue left from the old gaskets in order to seal leak free. This is the most time consuming and tiresome part of the job. Cut a piece of cardboard to fit the lifter valley and help catch all the crud scraped off the gasket surfaces. I suggest that you make good use of a shop vac while you are scraping and cleaning to avoid getting the old gasket material lost inside the engine. Look for little things that need to be replaced like the short hose from the thermostat hosing to the water pump, damaged vacuum lines and hose clamps that are rusted or broken.

Plan on cutting the thermostat to water pump hose, or removing the thermostat housing. Also plan on removing the distributor to get clearance to remove the intake manifold. Remove #1 spark plug, stick your finger in the spark plug hole and crank. When your finger gets air moving past it, stop cranking. Turn the engine until the timing marks line up with the pointer. Now you can pull the distributor out. Be sure to put a rag or cap in the block where you removed the distributor. It will save you trouble if something falls into the empty distributor hole.


My favorite trick that saves time and effort is the stay in place gasket. Be sure that you scrape (don't use a wire brush) all the old gasket material off, then clean all the surfaces with acetone or MEK.

When the surfaces are clean, use weather strip adhesive on the head to manifold surface. Also use the weather strip adhesive on the side of the gasket that mates to the head. When you are done, the head surface and the gasket surface that mate together will have weather strip adhesive on them. Follow the instructions on the tube or can and when it gets tacky, press the gasket down on the head.

Clean the area where the rubber rails mount to the block in front and in the rear with more acetone or MEK and do the same trick with the weather strip adhesive that you did to the heads.

Coat the rubber seals and the gasket area around the water passages with lots of Blue Silicone gasket sealer and put it together. TADA! no leaks, and no gaskets that shifted out of place.

Fuel injector seal kits with 2 O rings and a pintle cap (Borg-Warner P/N 274081) are available at Pep Boys auto parts. Cost is about $2.74 per kit. The following are listed at the Borg-Warner site ( BWD - Home ) as being resellers of Borg-Warner parts:

Parts Plus - Premium Auto Parts & Accessories or Auto Value / Bumper to Bumper Quality Parts & Service - Home of the Aftermarket Auto Parts Alliance Group or Auto Parts & Auto Service - Automotive Tires & Car Care | Pep Boys Auto - Parts & Service or Federated Auto Parts - Automotive Aftermarket

Most of the links above have store locators for find a store in your area.

Use motor oil on the O rings when you re-assemble them & everything will slide into place. The gasoline will wash away any excess oil that gets in the wrong places and it will burn up in the combustion chamber.

Plan on doing an oil change within 2 hours of run time on the engine. This will get the debris and coolant out of the oil pan.
 

stykthyn

I want to measure mine. It doesn't look that tall.
15 Year Member
Jul 6, 2006
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Aug 31, 2009
#3
  • Aug 31, 2009
  • #3
be sure to follow the torque pattern or you are just going to end up with another leak. I had a buddy that didnt know this and couldnt figure out why it kept spitting out intake gaskets
 

Maryland Stang

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Aug 21, 2002
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Aug 31, 2009
#4
  • Aug 31, 2009
  • #4
A lot of manufacturers use "The Right Stuff". It can be found in any auto parts store. You lay a 3/8 bead on the gasket rails and bolt your intake down. It expands as it cures and forms a tight seal that nothing can get through. It is without a doubt the best "gasket" that you can use.
 

Celeb

20+ Year Stangneter
Sep 8, 2002
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Here and there
Aug 31, 2009
#5
  • Aug 31, 2009
  • #5
jrichker said:
Use the cork gaskets, or get a gasket set with the rubber rails.
Click to expand...

ehhh..Rubber rail gaskets maybe, but the cork, russian roulette even with spotless mating surfaces
 

jrichker

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#6
  • Aug 31, 2009
  • #6
celeb said:
ehhh..Rubber rail gaskets maybe, but the cork, russian roulette even with spotless mating surfaces
Click to expand...

That's the reason for using the weather strip adhesive - the gaskets don't slide out of place.
 
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