Skip the auto shop - Our mechanics make house calls

Q: intake manifold question

asked by on

installing an intake manifold on a mustang the one listed. wondering if the manifold surface where the valley and the manifold meet should touch together? or should rtv take up the space. right now my manifold seals where the intake gaskets go but not where the valley and intake meet

My car has 100000 miles.

A: I do not see the manifold listed that you m...

I do not see the manifold listed that you mention, but the intake manifold to head should have a gasket on both sides for the lower intake and you can use grey RTV around the coolant passages. If you are using the two piece fuel injection manifold then there is a gasket that goes between the upper and lower manifold.

If you use any RTV on this connection it could get into the engine if excessive amounts are used other than a very thin layer to hold the gasket in place. If you do end up using RTV I’d suggest you use an ultra grey one, as a cheap RTV may fail quickly or not seal good or cure too quickly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: esp bas light on dash keeps coming on

There is a TSB (technical service bulletin) for this issue. It does say the brake switch is the source of the problem. At least it can be the source of the fix. But it doesn't say replace the switch. Apparently...

Q: Second cracked exhaust manifold with rumbling sound

Hi. We will be happy to assist you with your 2003 Infiniti M45. I believe it would be best to replace the cracked exhaust manifold. Your vehicle has two exhaust manifolds. It's likely that the one you replaced cracked before the...

Q: My heater is not working

Hello. As you know, there are two main components to the heater in your vehicle. One is the heater core which uses the warm coolant passing through the motor (and the heater core), and the other is the blower motor...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...