Concerns about K exhaust manifolds on C code 289

Varga_old · May 8, 2008 at 3:00 PM

I have a 64 1/2 "daily driver" convertible that has been udpated over the years. It used to have a straight 6 and the previous owner put in a 289. The engine is a C Code, single exhaust. The exhaust manifolds finally bought the farm and I purchased original K code manifolds from a Fairlane for replacements, had them bead blasted, ceramic coated and machined. I was told they would work fine on my stang, which is true and false. They will fit the engine block, but not meet the Y pipe....after some research I found this story:

http://www.mustangandfords.com/techarticles/m…t/photo_01.html

My Concerns: 1. Will replacing the C code with the K, in fact be a positive for my car? (performance wise) 2. Is my only alternative to have a new Y pipe made?

I've done the removal of the old on my own and so far so good with the replacement, however I have no ability to rebend any exhaust pipes. Suggestions or HELP please! <img src=images/icon_smile.gif border=0 align=middle>

289kford · May 8, 2008 at 3:37 PM

If you want to use the K manifolds, you need to replace the Y-pipe. If you are still using single exhaust after that, you will not see any change in performance. if you go to duals,I don't know if you would see much diff. between the C and K manifolds. you could sell those manifolds and finance a tri-y header, dual exhaust setup, then add a 4V carb.

Varga_old · May 8, 2008 at 9:40 PM

Does anyone know where I could purchase this Y pipe so I could bolt it on myself? I just hate taking my car to new places for service...I usually try to DIY first. These places see me come in and say "Cha-Ching!" then I unleash the knowledge on them, and it makes 'em mad. <img src=images/icon_smile_big.gif border=0 align=middle>

Thanks to all!

C6ZZKGT · May 9, 2008 at 12:03 AM Official Post

There are no aftermarket "Y" pipes for Hipo manifolds in a Mustang as all Hipo Mustangs used an "H" pipe with dual exhausts. You will need a custom made setup.

-Fred-

289kford · May 9, 2008 at 7:31 AM

look for the mustang places that sell motive industries exhaust. I think virginia mustangs is one. you will need to go to dual exhaust unless you have that Y-ppe custom made, as stated above, the K was an h-pipe and went into duals.

Edited by - 289kford on 05/09/2008 07:34:17

mwm_old · May 9, 2008 at 9:56 PM

Varga,

By all means, do the car the way you like it! The Hipo exhaust will help a little in horsepower and you will note a pleasent sound in the exhaust note! Virginia Mustang, Tony Branda, et al make a bolt in H Pipe which will help the HP and equalize the exhaust note. Going a little bit further, you can purchase a bolt in dual exhaust kit for the best of HP / Exhaust sound out there! Personally I like the Flowmaster Stage II's. Nice rumble that evens out for the highway and you can still hear. If this is too much work, a reputable exhaust company can put it together for a couple of hundred bucks.<img src=images/icon_smile_big.gif border=0 align=middle><img src=images/icon_smile_big.gif border=0 align=middle>

2K -Joe_old · May 10, 2008 at 7:33 AM

Varga, if you do in fact have Fairlane Hi-Po exhaust manifolds and not Mustang, than I believe that you will have to get a H pipe for the Fairlane application as the two exhaust manifolds have different length and angle drop offs. Someone correct me if I am wrong. Don's Custom Exhaust makes the H Pipes. 303-862-2096

Varga_old · May 10, 2008 at 8:39 AM

Thank you all for the info! I am looking into several options, but at the moment limited by cashola. (as I am back in college, you have any idea how expensive tuition is now-a-days?!!)

Yes, the Fairlane manifolds' mount ends are a bit different, in particular the DSide. I spoke with an exhaust shop yesterday and he agreed that I would need a new Y pipe fabricated; however he also had the idea (when I showed him the pic of the Y pipe) that I could cut it in a straight section about 12" after the manifold connection (where the cut would be past the firewall) and then I could connect the manifold end up; and he could splice in a piece to connect it all back. If I do it right, the splice should be hardly visible except from under the car. If nothing else, this will make the car drivable for the summer. Ive had the car about 10 years and maybe put 3k miles on it. Wonder if I could clamp a piece in for the interim and next spring do a complete pipe/system overhaul? ...too bad there is no flex pipe I could use!

Oh, that reminds me, it would seem there is no support for the exhaust pipes before the muffler on my car... is that correct??? I had to jack the pipes up so I could get the old manifolds off! Seems like a lot of stress to place on the manifolds!

The next hurdle is getting those spark plugs back in...yikes, all the times Ive watched someone change them over the years, this is my first go around. What a pain in the A. <img src=images/icon_smile_approve.gif border=0 align=middle>

Much appreciate all the suggestions!

Edited by - Varga on 05/10/2008 08:47:09

C6ZZKGT · May 10, 2008 at 10:10 AM Official Post

Joe, The only difference in the Fairlane manifolds is on the right hand side for 63 and 64 Fairlanes as the manifolds are setup for a fitting for the automatic choke. The exhaust pipe area is the same so a Mustang "H" pipe will also fit the Fairlane manifolds. The Fairlane used a different "H" pipe for the Fairlane body.

-Fred-

2K -Joe_old · May 10, 2008 at 8:54 PM

Thanks Fred, I knew there was a difference between the two , I thought it was in the manifolds. So it is just in the H pipe ...

Concerns about K exhaust manifolds on C code 289

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