1969 Mustang Stringer Rebuild

MAN - GA wrote: For what its worth my 75 Mustang has 3" copper tubes and it sounds great - just curious if log or riser style is louder?

I dont believe the manifold style (log vs. pyramid) makes much difference in volume- but the manifold material does seem to have an effect. Aluminum or SS manifolds tend to be louder than cast iron.

Riley wrote: If they were using copper, I would guess it was early 60's and earlier. Has anyone ever seen copper piping that was original?

Bruce,
Yes, I have and feel it was the mid 60's when they were switching over to all rubber.

If they were using copper, I would guess it was early 60's and earlier. Has anyone ever seen copper piping that was original?

[QUOTE=TRBenj] I would have expected a '69 H-M to have some copper in the exhaust as well.
QUOTE]

Mine just had molded 90's at the manifolds and straight hose out the rest of the way

Reid's Skier is freaking awesome.

TRBenj wrote: TX Wind wrote: Excellent point on the kinking Tim. The silicone kinks very easily by the way. If he uses copper, he could braze a 45 in there easy enough or even a 22 1/2 or 30 if necessary. Shhhhh....I thought there was a rule on here against advocating for mufflers....especially on a boat that didn't come with them. The manifolds exit slightly less than vertically (towards the front due to the engine angle) so he's need a 90 in there if he were to use soft walled hose. We got the corrugated over the copper on my sister's Stang though- just takes a little muscle. No worries on the muffler comments... my track record speaks for itself.

I have tremendous respect for what you do and what you know Tim. That BFN is the bomb.


Didn't this boat come with corrugated anyway?

I have to second Gary, this thing is pretty loud with what its got. I assume they are glasspacks.

Looks like another project to add to the list.

Thanks for the recommendations, Jeff thanks for your references.

I'll have more questions once I actually dig into this part.

TRBenj wrote: If you can find copper, great- it sure looks cool and sounds great. I cant imagine SS really sounds any different though. And its going to be cheaper too. Plus, since its tubing and not pipe, its measured by OD and will match the ID of the hose perfectly. That would be the easy choice if you decide to ditch the mufflers. I can understand both sides of the muffler argument, by the way... Ive removed mufflers from more than one boat, and will be adding some to a boat that didnt have them originally. Thats a personal call. If you do decide to go with copper, dont worry about getting exhaust hose over it- it can be done. If you have to make any bends (like going from vertical out of the H-M snails to horizontal in the bilge) then I would highly recommend using corrugated hose. Anything else will kink, especially if its thinner and not reinforced.

Excellent point on the kinking Tim. The silicone kinks very easily by the way. If he uses copper, he could braze a 45 in there easy enough or even a 22 1/2 or 30 if necessary.

Shhhhh....I thought there was a rule on here against advocating for mufflers....especially on a boat that didn't come with them.

You are correct Pete. Soft copper is also available in those wall thicknesses. I'm speaking from a local perspective because in this state, typically type "M" and "L" are used in soft applications. Type "K", although commonly used in refrigeration, is usually the preferred spec. for commercial piping applications inside a building here. Many times, that will be the way the local supplies run their inventory. So if he goes in and asks for Type "M" they may very well sell him soft copper in a complete roll. Talk about a PITA. It takes a couple of guys to unravel that crap. In the end, he can probably acquire the Type "K" hard for less money and with less frustration.

David and I only live about 45 minutes apart, so I'm speaking from local experience. I used to do the commercial takeoffs and estimates for my brothers when we had a commercial plumbing business together. I also personally held a Journeyman plumbing license at one point in my career. LOL...it's a subject for which I am not so proud to say, I have learned the hard way. Boy were they mad to see a roll of big soft copper show up instead of hard copper. They made me come help unravel it and I never made the mistake again.

If you can find copper, great- it sure looks cool and sounds great. I cant imagine SS really sounds any different though. And its going to be cheaper too. Plus, since its tubing and not pipe, its measured by OD and will match the ID of the hose perfectly.

If you do decide to go with copper, dont worry about getting exhaust hose over it- it can be done. If you have to make any bends (like going from vertical out of the H-M snails to horizontal in the bilge) then I would highly recommend using corrugated hose. Anything else will kink, especially if its thinner and not reinforced.

David,

Mufflers are for wussies. Sell them. They will probably bring a hundred bucks for the pair.

Pete, I could be wrong but I do believe the big copper like that is usually type "K" and is suitable for more than just DWV. Type M is usually soft copper and prob. more expensive.

David, you can buy silicone 3" hose at 4 Star Hose Supply. They are located up around Harry Hines. It runs about $20 a foot. E-basic power or Jamestown Distributors may also have a good deal on the stuff. Silicone exhaust hose is much more flexible than the wire hose although much more expensive. It is also thinner walled with a higher heat rating. If you do have to go with the copper tubing, use the silicone hose to make connections and it should go much much easier than with the wire hose which is a PITA.

Also, the type "K" copper is thicker than the type "M" soft but has the same O.D. If you go copper, get the type "K" and bevel it as much as possible. Pack the tubing in ice and heat the hose. Should help a great deal.

If it were me....I'd buy stainless. Probably close to even money there anyway. And remember, mufflers are for girls. The boat is loud anyway. So if you're gonna be a bear be a grizzly

As far as I know they are just fiberglass tubes. If there are mufflers in there they don't do much. I sure would not want it any louder.

My seat base is just short of covering it. Might could route out some of the ply floor bottom like Pete suggested. Going to make the removable panel span the exhaust.

Gary,   that is a Morse 2. Those are reversible.

Pete, I am going to make room to bring a Moose Drool just in case, but I have a feeling you are going to need to find an LQ that stocks in WI.   

David,

Let me know what you come up with. My brothers are Master licensed plumbers. I may be able to get you a break on the copper pipe.