Cobra install pics (56K should think twice) - TCCoA Forums

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post #1 of 142 (permalink) Old 10-06-2004, 11:06 PM Thread Starter
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Cobra install pics (56K should think twice)

I swapped a Cobra intake into my '92 T-bird somewhere around June or July. Anyway, I'm finally getting around to posting some of the pics, maybe I'll get off my butt later and actually put together a write up like I said I would. Anyway, here we go.


First things first (other than removing the old manifold), I had to take care of the throttle/tranny/cruise linkage issue. As the mustang linkage isnt compatible with the MN12 setup. So, it was time to do some grinding



Under that pretty pink-checked cloth is a 65mm BBK throttle body. There are 70mm units made to fit the SC t-birds, and those will also fit the 5.0L. However I opted for adapting the 65mm unit because it has been billed as the optimal size for a mostly stock 5.0L (at least one thats in a heavy car.... like mine).

After some grinding heres what I had:



Thats the 65mm unit, the linkage from my old TB, and the return spring.


The shape is the same, but things dont fit perfectly.





With some patience and a few minutes with a hand file, everything fit just dandy. Now, before you rush off and weld that sucker on, make sure you remeber to put the return spring on first.... otherwise you end up having to grind it back off and put it on anyway.



Since my lower manifold isnt equipped with an ACT bung, I had to relocate it to my airbox. Since my car is NA, it wont make any difference. So I cut the harness and extended the wires.




Then I found a suitable location on the airbox where the sensor wouldnt be in the way, and drilled a hole. I'm afraid I dont know the size hole I drilled, but I recomend drilling it small and then reaming out the hole until you can force the sensor through, the threads will hold it in place.




Then it was just a matter of routing wires.


I wont go into any detail on the actuall install as it is fairly straightforward. However I do suggest you keep a helper around. Especially when puting either manifold piece in place. That way on person can position the manifold, while the other makes sure that gaskets stay where they should, and any connections are made.

Heres a few side-by-sides of the Cobra manifold and the stocker:







Viva la difference


I was able to close the hood without cutting any reinforcement... barely. No visible bulge, but there was definetly resistance. I didnt get around to trimming the hood bracing until a week or so later, and there was a visible rub mark on the manifold. So I recomend taking the time to remove the bracing before you go out on any test runs


math > pasta

Last edited by StupidFly; 10-07-2004 at 05:45 PM.
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post #2 of 142 (permalink) Old 10-06-2004, 11:09 PM Thread Starter
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BTW, if you catch me on any inconsistencies or blatant mistruths, let me know so I can fix them.

math > pasta
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post #3 of 142 (permalink) Old 10-07-2004, 06:45 AM
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Did the car get a little kick in the rear after putting that in?

1991 Ford Mustang GT
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post #4 of 142 (permalink) Old 10-07-2004, 07:59 AM
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NICE!!! post some more helpful hints and this could be a sticky for two things, intake manifold swap and how to modify a mustang tb.

-Orlando

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post #5 of 142 (permalink) Old 10-07-2004, 11:34 AM Thread Starter
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Quote:
Originally posted by 91HellCat
Did the car get a little kick in the rear after putting that in?
aye, a bit I put headers in a week or so later, and once the computer got used to them I was haulin' butt. I could really benefit from some lower gears (my off the line is still kinda weak) but since I do alot of highway driving I'm not so sure that'll happen.

math > pasta
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post #6 of 142 (permalink) Old 10-07-2004, 03:28 PM
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56k was okay.

Looks good, bout how long did it take.

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post #7 of 142 (permalink) Old 10-07-2004, 03:36 PM
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Welcome to the Cobra club. Good job!

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post #8 of 142 (permalink) Old 10-07-2004, 05:38 PM Thread Starter
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Quote:
Originally posted by badbird95
56k was okay.

Looks good, bout how long did it take.
glad it was fairly easy on the 56kers.... btw the original photos are gigantic if anyone wants a blown up copy of any of them.

If I were to do it again, and I had all my parts and tools there, I could get it done in a day (assuming I'm not stopping to take any pics ). As it worked out I arrived at the shop in the evening and got busy modding the TB and removing the old manifold. The next day I did some parts hunting and got everything back together.

I think with 2 guys (who know what they're doing) working the whole time you could move through it pretty swiftly.

math > pasta
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post #9 of 142 (permalink) Old 10-07-2004, 05:40 PM Thread Starter
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Quote:
Originally posted by Mark M. TCCoA VP
Welcome to the Cobra club. Good job!

Mark



Thanks

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post #10 of 142 (permalink) Old 10-07-2004, 09:41 PM
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Quote:
Originally posted by Mark M. TCCoA VP
Welcome to the Cobra club. Good job!

Mark


Yes. Welcome!



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post #11 of 142 (permalink) Old 10-07-2004, 10:32 PM
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makes me want to take pictures of mine installed in my Cougar...


except its at the body shop.......
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post #12 of 142 (permalink) Old 10-07-2004, 10:53 PM Thread Starter
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Hey Mike, I've been meaning to ask you, is that a custom STB? Or is it a KB piece?

math > pasta
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post #13 of 142 (permalink) Old 10-07-2004, 10:54 PM Thread Starter
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Quote:
Originally posted by vlipke
makes me want to take pictures of mine installed in my Cougar...


except its at the body shop.......

on one condition... yours had better look worse than mine, so far everyone else's engine bay looks way better than mine


jk, get some pics up man

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post #14 of 142 (permalink) Old 10-07-2004, 11:04 PM
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looks just like the original engine bay for now, except the KNN filter, wich I am going to get rid of, and the intake, oh yea the headrs also...


Winter time the engine will be out of the car, gaskets being replaced (main seal leakes bad) and I will be ordering and putting in Thumper heads, Trickflow stage 1 cam, and 65mm TB.

Now only if I could find somone to do tht darn 373's.....

Oh yea, your install pictures are good, mine is about the same install, except the hood had to be trimmed a little on mine...and supposubly my 95 Cobra intake has been ported by the previous owner. He had it in a Mustang that was supposably turning mid 12's...I'll see if I can find the link with his pictures...
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post #15 of 142 (permalink) Old 10-07-2004, 11:31 PM Thread Starter
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I've been eyeing the thumper heads, make sure you let us know how they install goes, and how they work out.


My upper has been extrude honed, but with stock heads and stock(cobra) lower intake, it probably does more harm than good right now

math > pasta
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post #16 of 142 (permalink) Old 10-08-2004, 05:45 AM
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Yes, welcome to the club......errrr...something:

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post #17 of 142 (permalink) Old 10-08-2004, 11:58 AM
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Quote:
Originally posted by StupidFly

on one condition... yours had better look worse than mine, so far everyone else's engine bay looks way better than mine
jk, get some pics up man
Ahh you haven't seen my engine carpartment have yah??
Hmm I can't even REMEMBER when the last time i cleaned under there, along witht he heater hose that sprung a leak and sprayed nice sticky steam everywhere.... and leaves, road grim, ect, ect
Also the last time my car was washed in the last 1 1/2 months was when it rained the oher day
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post #18 of 142 (permalink) Old 10-08-2004, 02:07 PM
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stupid fly , i want pics of where the interferance with the hood is.

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post #19 of 142 (permalink) Old 10-08-2004, 03:51 PM
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by golly that is one beeautiful intake. mike i would have to say takes the cake. how much did all the modding cost ya? and yes a sticky or tech article would be freakin awesome. what kind of results are you seeing over the stock intake and throttle body?. sure would love to try that.
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post #20 of 142 (permalink) Old 10-08-2004, 04:26 PM Thread Starter
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Quote:
Originally posted by jk89cat
stupid fly , i want pics of where the interferance with the hood is.


10-4, as soon as I find my digital camera again, I'll go take some. Unless someone else has some handy they want to post.

math > pasta
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post #21 of 142 (permalink) Old 10-08-2004, 05:22 PM
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Quote:
Originally posted by StupidFly
Hey Mike, I've been meaning to ask you, is that a custom STB? Or is it a KB piece?
It is a Kenny Brown.

Quote:
Originally posted by zacharyzmn
by golly that is one beeautiful intake. mike i would have to say takes the cake. how much did all the modding cost ya? and yes a sticky or tech article would be freakin awesome. what kind of results are you seeing over the stock intake and throttle body?. sure would love to try that.
This is just an estimate but:

Engine: 2900.00
Cobra Intake: 490.00
Mustang Valve Covers: 20.00 on ebay
Polishing: Did it myself.
24 lb injectors: 220.00
JBA headers: 571.00
Pro-M MAF: 218.65
BBK TB: 258.00
SCT chip: 350.00

HP with stock motor and intake: 150
HP now: 196

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post #22 of 142 (permalink) Old 11-08-2004, 11:01 AM
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ok mines on finally. ill have pics in a day or so, i am having hood clearance issues, but i cant see where its hitting

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post #23 of 142 (permalink) Old 11-08-2004, 04:38 PM
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Just so you know, you can unbolt the throttle plate and slide the shaft and linkage out of it to put the return spring on.

-Thomas

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2003 SVT Focus: - SCT X3 tuner

Last edited by Thomas; 11-08-2004 at 05:01 PM.
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post #24 of 142 (permalink) Old 11-09-2004, 01:17 AM Thread Starter
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Quote:
Originally posted by Thomas
Just so you know, you can unbolt the throttle plate and slide the shaft and linkage out of it to put the return spring on.

-Thomas

nearly went that route, but all I was doing was rounding out the screwdriver slots. Wasnt budging.

math > pasta
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post #25 of 142 (permalink) Old 11-09-2004, 02:27 AM
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Quote:
Originally posted by StupidFly



nearly went that route, but all I was doing was rounding out the screwdriver slots. Wasnt budging.
Ah yes, very common problem. Since I do that as a side job (halfshafting and porting tb's) I invested in a hand impact tool made by craftsman. You hammer it and it twists. Pretty nifty, and well worth the 30 bucks.
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post #26 of 142 (permalink) Old 11-09-2004, 11:13 AM Thread Starter
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Quote:
Originally posted by Thomas


Ah yes, very common problem. Since I do that as a side job (halfshafting and porting tb's) I invested in a hand impact tool made by craftsman. You hammer it and it twists. Pretty nifty, and well worth the 30 bucks.
-Thomas

ah, good to know. BTW, I've always wondered... what the heck is halfshafting anyway?

math > pasta
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post #27 of 142 (permalink) Old 11-09-2004, 12:19 PM
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And now I also incorporate counter-sunk screws on the throttle plate to open up the pinch point even more. But thats the main idea. It's literally halving the shaft.
-Thomas

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post #28 of 142 (permalink) Old 11-10-2004, 02:36 PM
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all this mods and you run a 15.........not trying to offend you but i was thinking of swapping my SC engine for a 5.0, but i dont think its such a good idea anymore.

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post #29 of 142 (permalink) Old 11-10-2004, 03:43 PM
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If you are going from a 3.8SC to a fairly simple 5.0 then it is definitely a waste of time. If you are going to go to a 5.0 base then go with a 331 or 347 stroker and build it to leave room for a supercharger and you can see unreal power. If you want to go carbed then consider a 392 or 427 (351W base) and customize it all you want.
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Quote:
Originally posted by MaddMartigan
If you are going from a 3.8SC to a fairly simple 5.0 then it is definitely a waste of time. If you are going to go to a 5.0 base then go with a 331 or 347 stroker and build it to leave room for a supercharger and you can see unreal power. If you want to go carbed then consider a 392 or 427 (351W base) and customize it all you want.
I dont know that it's a waste of time, I believe it was xr7 dave who bought a project sc and converted it to 5.0 just for a new project.

I don't know why MIke is only running 15.88, maybe it's an old time, but a local guy ehre with 2" true dual straight pipe (done by previous owner) and cobra intakes ran a 15.8, so I'd say something is not right, or it could be the location/altitude/weather affecting it, who knows.
-Thomas

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