best way for dual exhaust?

[Stratfellow3]

what would be easy way to do dual exhaust on my 86 conti?

Can I use the system that 86 mark vii lsc's use?

for example the h pipe with cats is only 270 if you get one that stock for mark vii

http://store.summitracing.com/partdetail.asp?autofilter=1&part=MPE%2D93341&N=4294907910+4294907841+4294925022+4294923429+115&autoview=sku

then over at walker exhaust are part numbers for the whole exhaust on mark vii lsc for the rest of the piping i could use those part #s and get proper offset mufflers of my choosing (probably deltaflow 50s)

http://www.walkerexhaust.com/catalog/ExhaustCouponScreen.asp
click start new search, and get to 1986 lincoln mark vii and choose HO dual exhuast and there is the layout

Anyone know if this way would work? instead of having to get custom dual exhaust done

[gadget73]

Mustang parts are essentially the same, and might be cheaper than LSC ones. The H pipe is a little shorter, so you'll need to have the flow tubes (or mid-pipes as they might be called) extended a smidge. Fox body cars have a lot of interchange parts, so you're probably looking at parts for a Mark VII , Mustang or Tbird. Exhaust would be most close to a Mark VII with the added length and such.

[Stratfellow3]

so do you think mark vii would have proper flow tube lengths for my 86 conti?

also the reason i picked mark vii parts is because the h-pipe /w cats is way cheaper than an aftermarket one for mustang

or did you mean stock exhaust parts of mustang will be cheaper? if they are and that flow tube still has to be extended even with mark vii i guess i will be gettin exhaust of a mustang as well as the other HO stuff, unless i find better deals on ebay

Also getting mark vii exhaust will be 2.25", will mustang stock exhaust be 2 and a quarter as well or 2.5"?

Also how much would exhaust place charge me to have each flow tube extended this little bit you say is needed approximately?

[pro-five-oh]

Mark VII and Contis have the same wheelbase, the only possible difference it the tailpipes would be longer on the Conti, but evern that is doubtful.

[Stratfellow3]

okay well definitely cheaper to do it mark vii way for instance an hpipe /w cats is only 228 instead of 300+

http://i51.photobucket.com/albums/f370/Stratfellow3/0900.gif

only problem im seeing while getting all part numbers from walker layout is that one above hpipe 35574 when i goto partsamerica.com it has it but this part is a converter air tube i dont remember seeing one under my car where does this air tube go? or is it just that it goes to open air? i guess its that pipe that extends out of the pipe between converters in picture?

the other problem i see is the hangers for rightside exhaust for muffler and tailpipe both say NA so does that mean i just use the part#s 35726 and 35549 for that side too?

finally the clamps 35407, 35406, and 35334 x2 their part#s dont work so i am fine just getting generic exhaust clamps
2 2" ones, one 1 3/4" one, and one 1 7/8" one right?

[pro-five-oh]

Why would you want a stock exhaust if you have plans for a hot motor? Getting OEM type of stuff is still a bad restriction.

[Stratfellow3]

well converting to an HO isnt really a hot motor i would say, im not going to do all that other stuff for now.
I will put nice mufflers on it but i think stock piping that mark vii used that had an HO in it would be fine.

Which is another question I like flowmaster sound but not the price anybody have a recommendation on muffler that has close to flowmaster sound and same performance?

Also wouldnt getting custom made exhaust to get 2.5" be more expensive?
If not then I would just get 2.5" exhaust done, but I want h-pipe with cats still and its a pretty big price jump from stock off mark vii to an aftermarket mustang one.

Again unless its cheaper to get piping done and mustang stock h-pipe could fit I think putting on dual system that fits is better than the single i have right now

[pro-five-oh]

LOL, what I meant to say was that the stock exhaust is still a bit restrictive from the mufflers back. Notice they get smaller. Check with local exhaust shops, show them the info from the walker catalog and tell them you'd like something similar but with bigger pipes from the cat back. I'd recommend 2" for maximum quietness and no more than 2.5" if you really want flow.

NOTE: unless you convert to HO headers, the stock Mark H-pipe will not fit. I think this is covered in the tech articles I gave you in the other thread.

[gadget73]

Stock lopo manifold outlets are smaller and the stud spacing is wrong. A Mark VII H pipe won't bolt to it, but it'll bolt to any standard shorty header.

As far as pricing on the stuff, I have no idea. I bargain shop and buy lots of used stuff, plus I do most of my own work so pricing for the rest of the world is never something that I can calculate. I picked up a low mileage catted X pipe with a pair of new oxygen sensors for $175. The flowtubes are on order for like $32 for the pair, mufflers are cheap Summit jobs for $15 each, and the tails I paid $70 each for I think. Keep in mind the tails I use won't work for you since its a Towncar but the entire exhaust will be 2.5", including the over-axle pipes. On a Townie the mids need to be extended about 8" but a Conti is shorter and would need probably less than 6". On the Townies we can use those standard extension pipes avaliable at any auto parts store and just cut to length. Once its fitted up, just weld it on and you're done. Same theory applies to you, just get the generic extension pipes from Autozone, cut to length, and have it welded on with a MIG or you could even cheat and use clamps if you like.

Also you're aware that the stock Mark VII tailpipes are un-equal diameters and the mufflers are different lengths right? It kinda kills thier usefulness for performance being all small and wierd like that. The OE mufflers and tails really do not flow well, and were designed to be quiet.

[Stratfellow3]

so how would you suggest doing dual exhaust gadget73?
since mark vii lsc is different sizes on each side, thats pretty goofy

i could just get custom exhaust done and make it 2.5" and then no header reducers are needed and plenty of room for HP later

[pro-five-oh]

Here's the thing: you WANT headers. They shave 40-50lbs off the font end and they give you more power with no loss of torque.

Stock HO headers are cheap, put a want ad on Corral.net or Stangnet and you'll get people dying to get rid of them to you.

Get the headers, get the Mark (or Mustang) H-pipe of your choice, and you'll be done.

[Stratfellow3]

hey pro thanks for the refer to the other forums i posted,

Better to get mustang gt 86-92 h-pipe with cats correct since they are 2.5" unlike mark vii h-pipe with cats or are they both 2.5"?

[pro-five-oh]

Yeah I would get 2.5" exhaust and get whatever adapter is needed to get the HO headers to work with it.

[Stratfellow3]

okay well someone on corral.net already replied to my post

http://www.corral.net/forums/showthread.php?p=5823639&posted=1

thing is i dont know how much i should offer for his h-pipe /w cats, i have no idea of its worth

[gadget73]

Shipping on that from Washington might be spendy. Depending on the milage, you may want to solicit more local folks that you could go pick it up from.

[pro-five-oh]

I'd get the headers from any where in the country...forget about the stock Mustang H-pipe. Its no better than a stock Mark VII pipe. Only get a Mustang part if you want a high flow unit that's aftermarket, not factory.

[Stratfellow3]

ohh okay so mustang gt h-pipe /w cats is also 2.25"?

[pro-five-oh]

I thought it was 2.0 and so was the Marks. Either way you probably want a 2.5" h-pipe, which means you go aftermarket (new or used).