lj91

went out and got a set of cobra manifolds to replace the stock ones on my 1991 GT also changong throttle body. it started off easy i removed the stock egr& throttle body then got to the three bolts I thought were holding the upper manifold down. But it won't budge. Any thing i may have over looked? Also any one with instructions or a website with instructions(removal or reinstall) would be appreciated.

Thanks
Lj
1991 Mustang GT Convertible

pro5.0stang

I JUst has mine off thers is 4 bolts dude, then it should come off

lj91

any hints/directions for getting the lower manifold off? found the fourth bolt and the two under the manifold cover and final got the upper off this morning.

Lj
1991 Mustang GT Convertible

wildcobrar

If I remember correctly there are 6 bolts down each side of the lower holding it to each head for a total of 12 bolts. There are also some of these in stud form the hold brackets and wires that need to be dealt with before the can be removed from the intake. The you should be good to go.

ZachW04Stang

Its pretty straight forward, remove the bolts. I take off the ac compressor and fuel rails completely off just to make removal and installation easier.

lj91

process is slow as i am working full time and going to school, but finally getting to re-install. i'm trying to reinstall the pipe that runs from the front of the lower manifold to the heater core lines it seems pretty rusted thinking about changing but no one understands the exact piece i am talking about any specific name for this? once its in do i need to change the computer settings?


Thanks everyone for the help

gspfunk

I'm not sure if there's a specific name for it...

Disconnect your battery and leave it off for ~20 minutes before reconnecting it. Your computer should re-adjust to the new airflow. Also, get a larger MAF sensor if you have the $....it'll allow more air to your motor.

lj91

thanks, already have the MAF and also picked up a bigger throttle body.

gspfunk

Cool beans...Did you look in the tech sticky to see if that hose is labeled?

91hatchgt

I dont know what it is called, but be very careful when you go to install it into your new intake as it is steel and the intake is aluminum, you can cross thread it with your fingers alone! So beware, take your time, and get it in there straight.