1992 5.0 SCP exhaust headers coming - TCCoA Forums

 
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post #1 of 19 (permalink) Old 12-04-2014, 08:21 PM Thread Starter
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1992 5.0 SCP exhaust headers coming

New SCP shorty exhaust coming for my 1992 5.0.. Do you have any advice for install? Seems pretty simple to me after all other exhaust was replaced. I only have to remove to the bottom and replace from the bottom.

1992 Tbird LX 5.0, 3.73 gears, 1995 Cobra intake, deleted air silencer, 2.5" mandrel bent dual exhaust, SCP shorty headers. Updated four-hole fuel injectors. SK shift kit in AOD. Vogtland 0.9" springs, Tokico and Bilstein shocks.
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post #2 of 19 (permalink) Old 12-09-2014, 06:48 AM Thread Starter
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Actually, my Chilton manual says to jack it up and disconnect the exhaust, lower the car and lift them out from the top. I will try soaking the nuts with penetrating oil for a few days.

1992 Tbird LX 5.0, 3.73 gears, 1995 Cobra intake, deleted air silencer, 2.5" mandrel bent dual exhaust, SCP shorty headers. Updated four-hole fuel injectors. SK shift kit in AOD. Vogtland 0.9" springs, Tokico and Bilstein shocks.
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post #3 of 19 (permalink) Old 12-09-2014, 12:13 PM
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What do you mean by "shorty exhaust"?

Are you looking to remove the "shorty headers" and keep your stock exhaust (cats => mufflers) or are you referring to the exhaust kits they sell (cat-back).

If we are just talking about the exhaust cat-back, just cut everything off since you will need to re-weld the new pipe on anyway.


If we are talking about the exhaust HEADERS, your Chilton manual's procedure is sound.

Removal Thoughts
- Removal of the nuts holding the exhaust to the headers from underneath the car just requires a creative use of extensions and a deep socket. This is where an impact gun will make life super easy.
-I'm willing to bet that the trickiest part though will be to separate the EGR pipe from the old headers. This wasn't an issue for me because I disabled EGR a while ago (track car) but I do recall needing a pipe wrench to take the pipe off the passenger side header.
NOTE: people have asked me several times to buy the EGR pipe. If yours is in good condition, consider putting it up for sale.

Install Thoughts
- I would clean off the head surface with a scotchbrite pad.
- I would a thin layer of copper RTV instead of any gaskets.
- I would use a brass brush to clean any gunk off the header bolts if you are going to re-use them.
- I would put anti-seize on the threads of the header bolts
http://www.autozone.com/miscellaneou...nt/178722_0_0/
- Finally, the stock exhaust manifolds are 5.0 tbird specific and WILL sell if you put them up here. If you want to be nice to the new buyer and have a tap-and-die kit, clean up the threads as the studs definitely get corroded over time (I did this and it made reinstallation of my headers much easier).

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post #4 of 19 (permalink) Old 12-10-2014, 06:51 AM Thread Starter
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I mean by shorty exhaust the shorty headers offered by Super Coupe Performance. I've recently replaced all the rest of the exhaust with True Bendz 2.5 inch dual exhaust. The new exhaust has strong drone using Magnaflow mufflers and non-resonator x-pipe. It should be pretty easy to do the headers myself except the EGR pipe might crumble and other corroded nuts and bolts might fail. I did get the SCP install kit including gaskets.

By doing this after replacing all the other exhaust first. I may not feel much improvement from new headers. I'm just trying to eliminate all that's holding back my stock heads. If I do notice a difference, then they will have helped/the stock headers were holding back the motor. I'm doing easy bolt on stuff to make the rest of the life of the car a little more fun.

I hope its nuts that unscrew from the studs but the install kit came with 16 black bolts. I was going to reuse the old nuts and bolts if they fit. What is wrong with the gasket compared to copper RTV?

1992 Tbird LX 5.0, 3.73 gears, 1995 Cobra intake, deleted air silencer, 2.5" mandrel bent dual exhaust, SCP shorty headers. Updated four-hole fuel injectors. SK shift kit in AOD. Vogtland 0.9" springs, Tokico and Bilstein shocks.
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post #5 of 19 (permalink) Old 04-21-2015, 11:40 PM
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Quote:
Originally Posted by gordonm1 View Post
I mean by shorty exhaust the shorty headers offered by Super Coupe Performance. I've recently replaced all the rest of the exhaust with True Bendz 2.5 inch dual exhaust. The new exhaust has strong drone using Magnaflow mufflers and non-resonator x-pipe. It should be pretty easy to do the headers myself except the EGR pipe might crumble and other corroded nuts and bolts might fail. I did get the SCP install kit including gaskets.

By doing this after replacing all the other exhaust first. I may not feel much improvement from new headers. I'm just trying to eliminate all that's holding back my stock heads. If I do notice a difference, then they will have helped/the stock headers were holding back the motor. I'm doing easy bolt on stuff to make the rest of the life of the car a little more fun.

I hope its nuts that unscrew from the studs but the install kit came with 16 black bolts. I was going to reuse the old nuts and bolts if they fit. What is wrong with the gasket compared to copper RTV?
I know this is an old thread...but even the new headers are going to be holding back the motor.

So yeah, I bought two Lincolns in a week.

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post #6 of 19 (permalink) Old 04-22-2015, 07:11 AM Thread Starter
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I suppose they won't flow enough for 400 HP but for my Cobra intake, 19 lb injectors, and freeflowing exhaust I noticed an improvement adding them after the intake and exhaust. Without the high-flow cats and DI/DO resonator it over revved in 1st gear before the stock AOD could shift to second gear. Adding the cats and resonator slowed it down quite a bit later. I don't know of any specs for the shorty headers' flow volume.
I think I read deep in Tmoss's porting site my stock E7 heads only support 270 HP NA anyway. I'm curiuos what more HP I could get with better heads, cam, valve spring upgrades for the dollar and time invested but I think opinions here say 5-speed and 3.73 gears would add more fun

1992 Tbird LX 5.0, 3.73 gears, 1995 Cobra intake, deleted air silencer, 2.5" mandrel bent dual exhaust, SCP shorty headers. Updated four-hole fuel injectors. SK shift kit in AOD. Vogtland 0.9" springs, Tokico and Bilstein shocks.
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post #7 of 19 (permalink) Old 04-22-2015, 10:17 AM
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Don't mind EvilMooseofDoom..He had a 5.0 Thunderbird once, and well..I don't think that project really ever got off the ground..

Don't get me wrong he is amusing at times though..

I really don't understand what he means by "holding back the motor" either..

The exhaust system routing on our 5.0 MN12's is more of a restriction than even the shorty headers that come stock on our cars..

Especially the driver side catalytic converter..Look at this thing!


In all honesty our stock shorty headers are not really that bad..What we gain in HP using the SCP Headers vs the stock shorty headers is minimal..

The point is..You're not building your 92 for drag racing..So there's really no point in discussing why you need every last HP available for street duty..

With your new exhaust, and scp headers the only exhaust restriction I see on your stock headed 5.0 is your catalytic converter set-up..

Besides..You're not pushing enough air out of the engine to necessitate big headers anyways..You've got stock heads for god's sake!..

For some reason it gets preached over and over that everyone must install a manual transmission in these cars to make them fun..

Oh, and you have to install long tube headers as well, or your stock headed engine will be losing a ton of horsepower..../end (sarcastic rant)..

Definitely add some gears when you get a chance..You're not going to see any HP gains, but the fun factor goes way up..

Isn't that the point..Having fun..






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post #8 of 19 (permalink) Old 04-22-2015, 11:10 AM
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Originally Posted by Rayo View Post
Don't mind EvilMooseofDoom..He had a 5.0 Thunderbird once, and well..I don't think that project really ever got off the ground..

Don't get me wrong he is amusing at times though..

I really don't understand what he means by "holding back the motor" either..

The exhaust system routing on our 5.0 MN12's is more of a restriction than even the shorty headers that come stock on our cars..

Especially the driver side catalytic converter..Look at this thing!


In all honesty our stock shorty headers are not really that bad..What we gain in HP using the SCP Headers vs the stock shorty headers is minimal..

The point is..You're not building your 92 for drag racing..So there's really no point in discussing why you need every last HP available for street duty..

With your new exhaust, and scp headers the only exhaust restriction I see on your stock headed 5.0 is your catalytic converter set-up..

Besides..You're not pushing enough air out of the engine to necessitate big headers anyways..You've got stock heads for god's sake!..

For some reason it gets preached over and over that everyone must install a manual transmission in these cars to make them fun..

Oh, and you have to install long tube headers as well, or your stock headed engine will be losing a ton of horsepower..../end (sarcastic rant)..

Definitely add some gears when you get a chance..You're not going to see any HP gains, but the fun factor goes way up..

Isn't that the point..Having fun..

Rayo..
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Uh, concerning the 5.0 build that I did, the car was actually running once...

I threw everything BUT headers at the car. I've owned a lot of 5.0 cars, worked on a heck of a lot more of them, every other 5.0 car I've worked on responded to what I've done...and this...this POS, if anything, got slower. I even had two shop-owner friends go over what I did (at ridiculous expense), and even they were scratching their heads. Only the 3.73 gears seemed to have any effect.

I've even driven other 92-93 5.0 cars, and of course, having been dusted by an Escort wagon while on a test-drive in one of them didn't help things. I sent another customer 5.0 to one of the friends for modification...same result. SLIGHT pickup on top end, even with tuning work. It was only after long-tubes were installed that the one customer car began to get out of its own way.

I drove the finished car with the headers...while I was still a bit underwhelmed (this car REALLY needs more cubic inches), it was back in line with other 5.0 non-MN12 cars that I had modified.

I suspect, however, that it's none of the above...I think it's the ECM that's holding this car back. I also bounced through three different ECM's on my car, all three ran differently. But by the time I learned that someone could install a 94-95 TMO4 or whatever it is ECM into one of these things, I was finished, especially after some seat time in a 96 and 97 4.6 car.

So yeah, I bought two Lincolns in a week.

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post #9 of 19 (permalink) Old 04-22-2015, 05:19 PM
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So my bro and I were thinking about cutting out my cat and replacing my current mufflers with flowmaster knock offs OR unbolting everything from the headers and putting on lil hornies. Thoughts?
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post #10 of 19 (permalink) Old 04-22-2015, 09:14 PM Thread Starter
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Thundermonkey:

I'm not familiar with your parts being discussed and you are working on a 4.6 and my example is a 5.0. I cant offer any worthwhile advice other than I read here the 4.6 revs higher so you should gain more from freeflowing exhaust if your fuel supply is adequate. There's threads here about porting cast 4.6 manifolds that helps a lot. Mine are stamped, crimped, crumpled and crappy on the 5.0.

If you are prepared to do all new custom exhaust from the header to the mufflers I'd consider using the stock mufflers and getting ported headers for similar dollars. You may need to change the intake too to get the most out of the exhaust. Ask the 4.6 guys about all this in their forums.

1992 Tbird LX 5.0, 3.73 gears, 1995 Cobra intake, deleted air silencer, 2.5" mandrel bent dual exhaust, SCP shorty headers. Updated four-hole fuel injectors. SK shift kit in AOD. Vogtland 0.9" springs, Tokico and Bilstein shocks.
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post #11 of 19 (permalink) Old 04-22-2015, 09:23 PM Thread Starter
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Rayo:

I put the cats in the same time as the resonator. I'd love to try removing the cats to see what power comes back. That's one reason I'm holding on to the pipes. The other is some buyer of my car might want to try it.

Do you know if the Cobra intake can work with better heads? I'd still want it to fit under the stock hood. Some day I may be able to afford more down time on the car and change out the heads.

1992 Tbird LX 5.0, 3.73 gears, 1995 Cobra intake, deleted air silencer, 2.5" mandrel bent dual exhaust, SCP shorty headers. Updated four-hole fuel injectors. SK shift kit in AOD. Vogtland 0.9" springs, Tokico and Bilstein shocks.
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post #12 of 19 (permalink) Old 04-23-2015, 07:00 AM
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Originally Posted by gordonm1 View Post
Rayo: Do you know if the Cobra intake can work with better heads? I'd still want it to fit under the stock hood. Some day I may be able to afford more down time on the car and change out the heads.
Sure it can..

If you plan on using the Ford GT40 Iron Heads..Then the Cobra Intake pairs up with those heads nicely (flow wise)..

Even if you step up to some larger aftermarket heads..Like say AFR 165's or Trick Flow Twisted Wedge heads..The Cobra Intake will still work with those heads too..

The only thing is..If you decide later to go with some larger heads like the AFR 165's or Trick Flow Twisted Wedge heads..You should have the Cobra intake ported..

You could port both the upper and lower, but the lower is the important piece you definitely want ported..

If the biggest heads you go with is the Ford GT40 Iron Heads..It's not really necessary to get the Cobra intake ported at all..

I would wait to get your Cobra intake ported until you decide what heads you plan on using..





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post #13 of 19 (permalink) Old 06-17-2017, 08:44 PM
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Sorry to "hi-jack" but I'm transplanting my motor (gt40 / e303 / cobra) into another body and don't wish to do the steering mod. I also don't wish to spend nearly $400 on shorty unequal length headers because I'd rather spend that money on LT's later down the road (was my plan from the beginning) I found some block huggers part# H8427 that look eerily close (but not quite) to the design of the stockers and the shorties from SCP.

My question is, has anyone attempted to use these and if not what are your thoughts on if they will fit without much modification (other than the obvious relocation of the factory exhaust downtubes)

The websites that offer fitment say they will work but we all know just how reliable a website is when it comes to the fitment of parts on these cars.

I don't want to hear "just buy the SCP shorties" or "save your money for LT's" or "just use the stockers" all I want to know is if these will work and what it will take to get them in. This is what is in my budget at this time and I'd rather not continue using the factory "headers"

'91 Sport 5.0 HO - AOD - JBL Premium Sound w/ Kenwood eXcelon deck - Black Leather LX interior w/ Lux Light
- 17" Sport Edition Wheels wrapped in Michelin 225/50's - Custom Flowmaster exhaust - GT40 heads - Electric Fan - '92 Sport Bumper

Planned Mod's
-Cobra intake (upper/lower) / SC MAF/30#inj / Dual Exhaust/headers
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post #14 of 19 (permalink) Old 06-18-2017, 10:24 AM Thread Starter
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I looked those up on Amazon and they have one side going down and offset to the rear a bit. Between the last and second to last cylinders. You'd have to go look to see if that will clear the frame. There may not be room to get an elbow on right after the flange.

I did it the easy way and threw money at the situation with the SCP shorties. They go down at a 45 degree angle from the back of the motor I think.

1992 Tbird LX 5.0, 3.73 gears, 1995 Cobra intake, deleted air silencer, 2.5" mandrel bent dual exhaust, SCP shorty headers. Updated four-hole fuel injectors. SK shift kit in AOD. Vogtland 0.9" springs, Tokico and Bilstein shocks.
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post #15 of 19 (permalink) Old 06-18-2017, 04:03 PM
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"I don't want to hear "just buy the SCP shorties" or "save your money for LT's" or "just use the stockers" all I want to know is if these will work and what it will take to get them in. This is what is in my budget at this time and I'd rather not continue using the factory "headers"..."

Unfortunately, that's all I can tell you, because the steering shaft goes right through the collector on the driver's side.

So yeah, I bought two Lincolns in a week.

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post #16 of 19 (permalink) Old 06-18-2017, 08:40 PM
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Originally Posted by Dreadful_Knight
The websites that offer fitment say they will work but we all know just how reliable a website is when it comes to the fitment of parts on these cars.
As long as the website allows returns for parts that don't fit..Then why not just buy them, and see how close they are to fitting?
If they don't fit, send them back and get your money back..

I remember running across these..
Thinking they look like they might fit the engine bay, but the rest of the exhaust would have to be custom bent..

I doubt anyone here has tried them..So if you try them, make sure to follow up this thread with your results..

Good Luck!







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post #17 of 19 (permalink) Old 06-19-2017, 12:36 AM
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As long as the website allows returns for parts that don't fit..Then why not just buy them, and see how close they are to fitting?
If they don't fit, send them back and get your money back..

I remember running across these..
Thinking they look like they might fit the engine bay, but the rest of the exhaust would have to be custom bent..

I doubt anyone here has tried them..So if you try them, make sure to follow up this thread with your results..

Good Luck!

Rayo..


1. Driver's side doesn't clear the steering shaft, the shaft goes right through the middle of the collector. I had a set of these (used, borrowed from a friend here). I'm not even sure doing the steering shaft can be moved over far enough to clear it.

2. I seem to recall that they don't clear the crossmember, either.

So yeah, I bought two Lincolns in a week.

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post #18 of 19 (permalink) Old 06-19-2017, 06:52 AM
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Originally Posted by EvilMooseofDoom View Post
1. Driver's side doesn't clear the steering shaft, the shaft goes right through the middle of the collector. I had a set of these (used, borrowed from a friend here). I'm not even sure doing the steering shaft can be moved over far enough to clear it.

2. I seem to recall that they don't clear the crossmember, either.
I missed that part in your first post, where you said you tried them and they fit for shit..









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post #19 of 19 (permalink) Old 06-19-2017, 07:04 AM
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These were the ones I was thinking might fit with minimal fuss in the engine bay..

Hedman 88380



It's more of a mid-length header..
Again though,even if they fit the engine bay..The front of the exhaust system would have to be custom bent..







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