cobra intake install help

fms89 · 12-31-2002, 01:40 AM

I'm installing a cobra intake on my 89lx. I'm mechanicaly inclined, but need guidance on the install. i.e. vacum lines and etc. any help would be greatly appreciated.

88workcar · 12-31-2002, 08:55 AM

It is not so important that each one goes in a special spot. Just make sure that they all get put back on. I am actually to the point that my brake booster goes strait to the intake and I have removed the vacume tree.

NotchJohnson · 12-31-2002, 10:00 AM

the pcv plugs into the back of the intake. the fat vacuum line goes to the tree. FPR goes to one of the barbs that branch off the big vac fitting in the back of the intake. The black line that is part of the 4 vac line plug looking thing that is next to the firewall on the pass side goes to the other barb. The charcoal canister line hooks to the vac port on the front side of the intake, and of course the one on the valve cover hooks up to your TB. I think thats all of them - John

fms89 · 12-31-2002, 10:03 AM

Thanks 88Workcar , I've got the upper off. Are there any Do's or Don'ts.

Old Guy with 87 GT · 12-31-2002, 06:49 PM

toss out the cork sections of the lower gasket and get some black rtv

(front and back ,the little seals for the lifter valley)

use the port side gaskets accordingly ,then run a genoruos beed of rtv in the front and back instead of them cork gaskets

i had problems sealing my lower with the cork

also ive heard peaple say to go back after youv'e run the moter a few times and re torgue the lower down

horsesnake95 · 12-31-2002, 08:15 PM

I'n my experience with changing intakes on 302s, I've found that yes the cork gaskets for the lower intake are junk, but when using just the gasket maker you have only slighty less of a chance of a leak occuring. Your best bet is to find an intake gasket set that includes the rubber front and back gaskets and using a small amount on the corners of these. I've known plenty of people who swear by the gasket in a tube method, but i've never had a problem with the rubber ones.

fms89 · 01-01-2003, 05:18 PM

thanks all ! I'm using all the ideas i can get. Makes the job easier. Im now getting the old gaskets off the heads. Im taking my time to make sure its correct. I'll probably get the rubber gaskets. thanks for letting me know.

Bad89stang · 01-02-2003, 12:42 AM

O.K. let me persuade you to change your mind...
USE ULTRA BLACK RTV!
I have been down this road already and ended up doing the install 3 times to get it right. The first two times I used the rubber Fel-pro gaskets on the end seals and it looked like it was sealing during the install. After ten minutes of driving I checked and found a puddle of coolant by the distributor. Time to start all over!
USE ULTRA BLACK RTV!
Yes, it can work to use the rubber end seals. That is why Fel-Pro includes them with some of the intake gaskets, but don't roll the dice.
USE ULTRA BLACK RTV!
I was convinced that my intake was cast incorrectly and took it to several machine shops. They all said that the rubber seals are junk.
PKRWUD told me the same thing and he has yet to be wrong when giving advice to me.

Just use a thick, continuous bead of RTV and extend it up the corners of the intake gasket. That is all.

12-31-2002, 01:40 AM	#1
fms89 Registered Member Join Date: Dec 2002 Location: orlando,fl. Posts: 5	cobra intake install help I'm installing a cobra intake on my 89lx. I'm mechanicaly inclined, but need guidance on the install. i.e. vacum lines and etc. any help would be greatly appreciated.

12-31-2002, 08:55 AM	#2
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	It is not so important that each one goes in a special spot. Just make sure that they all get put back on. I am actually to the point that my brake booster goes strait to the intake and I have removed the vacume tree. __________________ 88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid I'm somewhere in tthe middle.

12-31-2002, 10:00 AM	#3
NotchJohnson Registered Member Join Date: Oct 2001 Location: Florida Keys Posts: 593	the pcv plugs into the back of the intake. the fat vacuum line goes to the tree. FPR goes to one of the barbs that branch off the big vac fitting in the back of the intake. The black line that is part of the 4 vac line plug looking thing that is next to the firewall on the pass side goes to the other barb. The charcoal canister line hooks to the vac port on the front side of the intake, and of course the one on the valve cover hooks up to your TB. I think thats all of them - John __________________ 89 notch-finally not stock!! ported gt40's, ported cobra intake, 65mm tb, 75mm maf, mac cai, lt's,prochamber, fms 1.6 rr, 125 shot.

12-31-2002, 06:49 PM	#5
Old Guy with 87 GT Registered Member Join Date: May 2001 Location: Harrisburg, Pennsylvania Posts: 379	toss out the cork sections of the lower gasket and get some black rtv (front and back ,the little seals for the lifter valley) use the port side gaskets accordingly ,then run a genoruos beed of rtv in the front and back instead of them cork gaskets i had problems sealing my lower with the cork also ive heard peaple say to go back after youv'e run the moter a few times and re torgue the lower down __________________ the "not so old",old guy 87 Mustang GT T-top >hanlon t-5, pro 5.0, centerforce clutch ,adj. cable/quatrant ,3.27s ,full 2 1/2 ex(off road H) adj. reg. ,e-cam ,70mm TB, cobra intake ,1.7rr ,ported/milled e7ets w/crane springs ,306 balaced/decked short block w/speed pro forged flat top pistons ...257rwhp/302rwt best et 13.7@102 (4/11 ) '80 Capri (future project,currently collecting parts for 351 moter)

01-02-2003, 12:42 AM	#8
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	end seals O.K. let me persuade you to change your mind... USE ULTRA BLACK RTV! I have been down this road already and ended up doing the install 3 times to get it right. The first two times I used the rubber Fel-pro gaskets on the end seals and it looked like it was sealing during the install. After ten minutes of driving I checked and found a puddle of coolant by the distributor. Time to start all over! USE ULTRA BLACK RTV! Yes, it can work to use the rubber end seals. That is why Fel-Pro includes them with some of the intake gaskets, but don't roll the dice. USE ULTRA BLACK RTV! I was convinced that my intake was cast incorrectly and took it to several machine shops. They all said that the rubber seals are junk. PKRWUD told me the same thing and he has yet to be wrong when giving advice to me. Just use a thick, continuous bead of RTV and extend it up the corners of the intake gasket. That is all. __________________ You're gonna need your seatbelt

12-31-2002, 10:03 AM	#4
fms89 Registered Member Join Date: Dec 2002 Location: orlando,fl. Posts: 5	Thanks 88Workcar , I've got the upper off. Are there any Do's or Don'ts.

12-31-2002, 08:15 PM	#6
horsesnake95 Registered Member Join Date: Oct 2002 Location: illinois Posts: 26	I'n my experience with changing intakes on 302s, I've found that yes the cork gaskets for the lower intake are junk, but when using just the gasket maker you have only slighty less of a chance of a leak occuring. Your best bet is to find an intake gasket set that includes the rubber front and back gaskets and using a small amount on the corners of these. I've known plenty of people who swear by the gasket in a tube method, but i've never had a problem with the rubber ones.

01-01-2003, 05:18 PM	#7
fms89 Registered Member Join Date: Dec 2002 Location: orlando,fl. Posts: 5	thanks all ! I'm using all the ideas i can get. Makes the job easier. Im now getting the old gaskets off the heads. Im taking my time to make sure its correct. I'll probably get the rubber gaskets. thanks for letting me know.

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