Inline Exhaust Stacks

[LakeRacer99]

Are these the same pipes that fit an inline six? I realize there are only 2 here and the plate is for a 4cylinder. I mean the pipe and elbow themselves. I think these were part of a merc part, did someone rotate them 45Deg? I know 25SS has some pipes that are 45Deg.

[Mark75H]

Yes, you are correct those are 2 of 3 Merc BP pipes (not Quincy) that someone rotated

This set up was common in the northwest in APBA's 1100cc runabout class. The 4 cylinder 85 is 1100cc's and uses the same bore and stroke as the 99 ci Mercs

[LakeRacer99]

Thanks Sam.

Anybody got another pipe (straight or rotated) and maybe a mounting plate for a 6cyl? how about a filler block?

[largecar91]

Those will be hard parts to come by. With this economy someone may come off some of their stuff. It looks as if the water injection was added but you do have some of the correct springs. Are some of them shorter than the others?

[MagicFloat]

Filler blocks are tough to find. I have a set of Quincys for a 1967 1100SS.but no filler block.Have the water tube (thanks DaveS) but unusable without the filler block.If anyone could use what I have,I am open to offers as I never received the 1100 I paid for years ago.

[LakeRacer99]

How hard would it be to make a filler block with some modelling clay, a hunk of alum and a mill? I was thinking the plate and filler block could be machined.

The filler block in my 20H with Bayer pipes on it would be pretty easy to make, I think.

oh, The springs are diff sizes.

[LakeRacer99]

I have a set of Quincys for a 1967 1100SS.but no filler block..If anyone could use what I have...

what pipes are the quincys? 2-1? 6 separate pipes?

[MagicFloat]

2 into 1,3 pipes.DaveS told me a few years ago it is doable,but expensive.Maybe he will chime in.

[Mark75H]

I think the only 6 pipe set Quincy ever made was for the 60-66 ci motors.

The filler block is an incredibly complicated piece. It would probably be easier to cast a piece rather than machine from billet. If you make the clay mold you will see what I mean.

[lilabner]

I think the only 6 pipe set Quincy ever made was for the 60-66 ci motors.


Surprise..Merc 800 with sportmaster..Quincy was all I could afford..Merc's were impossible to get..We even bought them for one of Dave Craig's Powercat's with 800's..I never saw a set down here on a 60 or 66 ci motor..but we did have open stacks on a Mark 78 or two..

[Bruster]

I saw these at Mt Dora a few years back. When he ran the boat it was not loud like the Merc Stacker pipes. They were no louder than XS.


http://i47.tinypic.com/2wq5wxz.jpg

[MagicFloat]

Those are what I have.

[Mark75H]

Surprise..Merc 800 with sportmaster..Quincy was all I could afford..Merc's were impossible to get..We even bought them for one of Dave Craig's Powercat's with 800's..I never saw a set down here on a 60 or 66 ci motor..but we did have open stacks on a Mark 78 or two..

I'm pretty sure I asked about your stacks before and other people were sure they were Merc stacks ... I am glad you can set this straight.

You are confusing me about the Mk78 ... open exhaust or 6 pipes?

[lilabner]

Open exhaust, from Mercury..I think it was before the stacks..1958

[lilabner]

If you look close at the stacks, there are no gussets between the pipes..they were all self standing, unlike the ones from Merc..They were made a little heavier, and shorter..and the Mercs did sound better..but...What's a decibel meter? Between those and my artillery ears, my wife says I'm deaf..works for me:D :cheers:

[Mark75H]

Open exhaust, from Mercury..I think it was before the stacks..1958

I have one of those. I don't think very many were made, do you?

[lilabner]

I think I have only seen two or three..The one we had was procured by Bob Waldo, who ran Dade Marine in the 50's..The motor was on a 1949 Raveau in the 1958 Nine hour race..Mercury had Raveaus with 75H's on them..Bob was faster and was leading past the halfway mark when a palm fron busted the swivel pin..Bob put a stainless deflector on the open exhaust to help soften the noise..The seat was in the left rear, on the floor.. Boat was a 14 foot model.

[MN4V]

How hard would it be to make a filler block with some modelling clay, a hunk of alum and a mill? I was thinking the plate and filler block could be machined.

Dale (25ss) made this one from stock filler plates. He would be the one to ask on how he did it.
http://i299.photobucket.com/albums/mm315/MN392/FillerPlate1.jpg
http://i299.photobucket.com/albums/mm315/MN392/FillerPlate.jpg
Mark N

[3togo]

How come there are no expansion chambers on outboard 2-strokes?
Knowing how well an expansion chamber worked on 2-stroke motorcycles I've just often wondered.

Can someone fill me in.

Thanks!

Ed

[Mark75H]

There are expansion chambers on outboards, you just don't know where to look yet :)

Expansion chambers aren't commonly used because they don't work well with porting less than 180 degrees exhaust open timing - and - exhaust open timing that radical usually stops a motor from having enough mid range to push the boat over plane. The way my brother explains it, it isn't the expansion chamber that is giving the power, it is the wild porting that gives the power and the expansion chamber is just a crutch that takes away some of the drawbacks of that porting.

The successful motors using expansion chambers either don't need low end or low/mid range power or have some kind of transmission to change the motor rpm vs vehicle speed to aid acceleration.


Search Google for APBA PRO, Rossi, GRM, Arens, Yamato, Konig and Konny ... you will see lots of outboards successfully using expansion chambers

[LakeRacer99]

Dale (25ss) made this one from stock filler plates. He would be the one to ask on how he did it.


Thanks Mark...I will talk to Dale. That is a nice piece.

[raymar]

I gave someone on this site the directions to make a filler block from a stock water jacket cover by machining the part the same thickness as a
filler block that comes with the stack set. It appears that the one in the picture was made from a 1250 part, but any part from 68-71 engines (and
some 72 1150s) can be used. The part needs to be bolted down to a good flat surface and machined to the proper thickness. A filler block I have measures .753" thick.

[joelsob]

Back in the 70's the shop I worked at did a set of quincys..as I remember there was a need for a lot of rejetting to find IT>

i always liked ....loud and tried this on an evinrude....never got it right

[3rd Gen]

Putting together a stacker !! :thumbsup: I have my wrap made up! took a regular wrap riveted a stainless filler in the front than moved the hinges to the side have to re-cut another set of cowls didn't line up the way I wanted :nonod: 2nd time will be perfect...I have to make up a filler block I have the exhaust plate out of a 70 1350...It has to be machined to .753 is that correct ? and can I use this in a 74 150?....Thanks for any input:thumbsup:

[Mark75H]

I doubt the stacks can be adapted to any post-1971 block. The exhaust chest are different.

Using ported pistons with the stacks would be 100% experimentation for the porting and jetting.

[2us70]

I saw a video yesterday attributed to you of a Mark75 on a hydro. What struck me was the sound of that motor. I still love the sound of the old Merc inline motors. I spent my whole racing life in front of Mercury inline motors and still miss that sound.

[3rd Gen]

I doubt the stacks can be adapted to any post-1971 block. The exhaust chest are different.

Using ported pistons with the stacks would be 100% experimentation for the porting and jetting.I'm surprised no one has done this? Its a J block and wanted to put together a cool build ! Did not realize the exhaust chest were different ! I guess my starting point will be to confirm the .753 thickness for the filler block and check the thickness of both exhaust plates to assure their the same.Can anyone confirm the .753? that would be great! I have a 1350 I could stack figured a 150 would be awesome if doable!

[3rd Gen]

I saw a video yesterday attributed to you of a Mark75 on a hydro. What struck me was the sound of that motor. I still love the sound of the old Merc inline motors. I spent my whole racing life in front of Mercury inline motors and still miss that sound. I have NEVER heard a stacker run !!! Looking forward to it! Next time your in Norton! Meet you at the lake!

[largecar91]

Mine measures .750. I needed an extra and had it cut to .750. Never ran that motor but all went together nice. I have some specs somewhere and I also measured my original ones.

[lilabner]

The filler blocks Quincy made for 30-40-44-60-66-76 ci engines were pretty crude and simple cast pieces. Not much fitting required if I remember correctly. We just bedded them in with Marine Tex. Seemed to work fine like that.

[lilabner]

This is Entrop's first record hydro at Lake X. Open stacks.. Pretty rare now. Sam's smiling, I can tell.. He has one

[raymar]

Answer to 3rd Gen: I have a stack set on my 1350 that was converted to fit a 1500; I got it from a friend who
ran this set on his 1500 and he said it would really run great. The filler block fits as is and the outer part has to
have some new holes drilled and a couple filled with Devcon. A small area at the lower part did not quite cover
the 1500 gasket area but a little Heliarc work or Devcon can fix the problem. Use a new 1500 gasket and modify
it to align with any water holes in the outer cover if needed.

[GENE LANHAM]

This is Entrop's first record hydro at Lake X. Open stacks.. Pretty rare now. Sam's smiling, I can tell.. He has one

Butch---didn't Dick Spellman run a similar setup on his HoltCraft Hydro??

[lilabner]

Butch---didn't Dick Spellman run a similar setup on his HoltCraft Hydro??
He may have, but when Phil Young bought it, there were no stacks. Bob Waldo had a set on his M78 on the 14 foot Raveau called Miss Dade Mar.
I think I may have the record for pull starting 6 cyl Mercs in Florida, at least back then. Both Phils and Big Reds, and the Wet Noodle.

[3rd Gen]

Mine measures .750. I needed an extra and had it cut to .750. Never ran that motor but all went together nice. I have some specs somewhere and I also measured my original ones.Any specs would be GREATLY appreceiated !! .750 it is! THANK YOU

[3rd Gen]

Answer to 3rd Gen: I have a stack set on my 1350 that was converted to fit a 1500; I got it from a friend who
ran this set on his 1500 and he said it would really run great. The filler block fits as is and the outer part has to
have some new holes drilled and a couple filled with Devcon. A small area at the lower part did not quite cover
the 1500 gasket area but a little Heliarc work or Devcon can fix the problem. Use a new 1500 gasket and modify
it to align with any water holes in the outer cover if needed. Raymar Thank you for your input !Any ideas on Jetting?

[3rd Gen]

This is Entrop's first record hydro at Lake X. Open stacks.. Pretty rare now. Sam's smiling, I can tell.. He has one Coooll or what!!

[2us70]

Be warned that a set of those stacks just might get you run off that lake in Norton. Most people don't have an appreciation of that sound. Believe me just about everybody in Norton will be able to hear that motor.

[3rd Gen]

Be warned that a set of those stacks just might get you run off that lake in Norton. Most people don't have an appreciation of that sound. Believe me just about everybody in Norton will be able to hear that motor. We just need 1 good run lol!! They have accepted running the T2X ....Took awhile!!! lol !

[lilabner]

Be warned that a set of those stacks just might get you run off that lake in Norton. Most people don't have an appreciation of that sound. Believe me just about everybody in Norton will be able to hear that motor.

We used to test the stack motors at Blue Lagoon in Miami. Located down river a little ways from Bertram, and right near MIAirport. It was a big industrial area with lots of traffic. You could hear the stacks on the other side of the airport, from NW 7th St to NW 36th St and Lejeune Road, where Dave Craig's shop was. I don't know how far south the noise carried. The boat ramp was owned by the owner of Miami Outboard who was Don Baldaccni's step dad. For those who don't know, Don was probably the top DSH driver in the country and a top outboard mechanic. I think of Stock outboard and alky racing as the true definition of outboard racing. Until you have watched F Hydro's, even D Hydro's run on a closed course, you haven't watched a boat race. I didn't mention the best, Alky's. This was the grass roots of racing. I watched F Alky's race in Lakeland one year in 66, and two of them blew over at the finish, both over the record for the course. Dick O'Dea was one of them, and the winner

[Bob V]

We just need 1 good run lol!! They have accepted running the T2X ....Took awhile!!! lol !

On a scale of 1 to 10 and 10 being the loudest, a stacker is a solid 10 and your T2X is about a 2. It is like comparing apples to oranges. A stacker can be heard for miles :eek:

[3rd Gen]

:thumbsup:
On a scale of 1 to 10 and 10 being the loudest, a stacker is a solid 10 and your T2X is about a 2. It is like comparing apples to oranges. A stacker can be heard for miles :eek: Cant wait to complete !.....Sounds like I'm gonna need a bigger lake! no pun intended

[3rd Gen]

We used to test the stack motors at Blue Lagoon in Miami. Located down river a little ways from Bertram, and right near MIAirport. It was a big industrial area with lots of traffic. You could hear the stacks on the other side of the airport, from NW 7th St to NW 36th St and Lejeune Road, where Dave Craig's shop was. I don't know how far south the noise carried. The boat ramp was owned by the owner of Miami Outboard who was Don Baldaccni's step dad. For those who don't know, Don was probably the top DSH driver in the country and a top outboard mechanic. I think of Stock outboard and alky racing as the true definition of outboard racing. Until you have watched F Hydro's, even D Hydro's run on a closed course, you haven't watched a boat race. I didn't mention the best, Alky's. This was the grass roots of racing. I watched F Alky's race in Lakeland one year in 66, and two of them blew over at the finish, both over the record for the course. Dick O'Dea was one of them, and the winner
Dick O'Dea rana sit down f hydro ? with a t3 on it?

[3rd Gen]

We used to test the stack motors at Blue Lagoon in Miami. Located down river a little ways from Bertram, and right near MIAirport. It was a big industrial area with lots of traffic. You could hear the stacks on the other side of the airport, from NW 7th St to NW 36th St and Lejeune Road, where Dave Craig's shop was. I don't know how far south the noise carried. The boat ramp was owned by the owner of Miami Outboard who was Don Baldaccni's step dad. For those who don't know, Don was probably the top DSH driver in the country and a top outboard mechanic. I think of Stock outboard and alky racing as the true definition of outboard racing. Until you have watched F Hydro's, even D Hydro's run on a closed course, you haven't watched a boat race. I didn't mention the best, Alky's. This was the grass roots of racing. I watched F Alky's race in Lakeland one year in 66, and two of them blew over at the finish, both over the record for the course. Dick O'Dea was one of them, and the winner
The engine is amazing!!

[lilabner]

Dick O'Dea rana sit down f hydro ? with a t3 on it?

Nah, nothing that hi tech.. Lay down ALKY hydro w/Quincy Merc.

[Bob V]

:thumbsup: Cant wait to complete !.....Sounds like I'm gonna need a bigger lake! no pun intended

I am sure that anyone that has been around stackers will agree that you really need ear protection if you are going to spend any time close to that engine while it is running. Without ear protection, you will be a candidate for a hearing aid down the road...

Can you hear me now?

:eek:

[RogerH]

Been There....Done That ! The in-lines really need water injection to help get them moving out of the corner or on plane. Need to thank Gene Lanham for help / guidance with the water injection nozzles.

337206 337207

[2us70]

When Red Wahl ran his twin 800 stacker cat at Pelican Harbor I could hear it from my house in North Miami. That is a little over a mile and a half as the crow flies.

[lilabner]

When Red Wahl ran his twin 800 stacker cat at Pelican Harbor I could hear it from my house in North Miami. That is a little over a mile and a half as the crow flies.

Running at Blue Lagoon a Cop would always show up. We would ask him if he was going to make us stop, he said not unless someone filed a complaint. He just loved seeing us run. And he would warn us first.
I ran Reds cat in the Blue Ridge Reservoir. Noise was epic. The people loved it, they cheered every time I went out. I wish we had water inj back then because I lost in the turns but passed on the long straights.

[lilabner]

Been There....Done That ! The in-lines really need water injection to help get them moving out of the corner or on plane. Need to thank Gene Lanham for help / guidance with the water injection nozzles.

337206 337207

Very nice work..

[GENE LANHAM]

I am sure that anyone that has been around stackers will agree that you really need ear protection if you are going to spend any time close to that engine while it is running. Without ear protection, you will be a candidate for a hearing aid down the road...

Can you hear me now?

:eek:



'Ear protection' from the 70's: Cotton balls coated with vaseline (ugh)

Bob, my newest hearing aids were over $7000---but I can also blame Pratt and Whitney, Lycoming, Continental, Big block Chevys, Patterson side pipes---OLD AGE---

http://i68.tinypic.com/23jpamw.jpg

[2us70]

My Dad always blamed Curtis- Wright. After flying in a B-17 a couple of weeks ago I can believe it. Those planes are loud even without the machine guns and flak. It was quite an experience.

[GENE LANHAM]

My Dad always blamed Curtis- Wright. After flying in a B-17 a couple of weeks ago I can believe it. Those planes are loud even without the machine guns and flak. It was quite an experience.

Jim---I forgot to mention the Detroits----the City of Miami decided to replace all the equipment with screaming 2 stroke Diesel Power---and supplied the drivers with Mickey Mouse ear muffs---:nonod:

[lilabner]

My Dad always blamed Curtis- Wright. After flying in a B-17 a couple of weeks ago I can believe it. Those planes are loud even without the machine guns and flak. It was quite an experience.

Rick Shaw the DJ, my next door neighbor for the last 30 years, and I flew in one in 2003. I loved it and didn't think it was loud at all. It was a pretty smooth ride too. Top hatch was off so I took some pictures hanging out.

[3rd Gen]

Rick Shaw the DJ, my next door neighbor for the last 30 years, and I flew in one in 2003. I loved it and didn't think it was loud at all. It was a pretty smooth ride too. Top hatch was off so I took some pictures hanging out.
How cool is this!! a Mercury Stacker thread ends up with a comparison to a B-17 ...Carl Kiekhaefer would be proud!

[milkdud]

Here is a looper I video'ed a few years ago. Its hard for a camera/speaker to reproduce the massiveness of the sound.

https://vimeo.com/46917119

[Bob V]

'Ear protection' from the 70's: Cotton balls coated with vaseline (ugh)

Bob, my newest hearing aids were over $7000---but I can also blame Pratt and Whitney, Lycoming, Continental, Big block Chevys, Patterson side pipes---OLD AGE---

http://i68.tinypic.com/23jpamw.jpg

Gene - Actually that sounds pretty good for back in the 70's. I was expecting something to do with "Duct Tape." :eek:

The price of hearing aids have skyrocketed in the last few years. Back in the day, you could have purchased three stackers for the price of the hearing aids today and had money left over....Just does not seem right. The Pratt and Whitney, Lycoming, Continental, Big block Chevys and Patterson side pipes did not help either, but, in retrospect, I bet they were worth it. :thumbsup:

[2us70]

The plane you flew in is the one owned by EAA. My brother and I flew in the Collings Foundation "909". The view from the radio room hatch was how my Dad saw the war. There was a .50 cal mounted there in combat. It was very cool to be able to get a small taste of his experience.
Rick Shaw the DJ, my next door neighbor for the last 30 years, and I flew in one in 2003. I loved it and didn't think it was loud at all. It was a pretty smooth ride too. Top hatch was off so I took some pictures hanging out.

[GENE LANHAM]

I have been telling people for years that the loudest event--ever--was the first day start at Havasu, 1969:nonod:

Wrong again--

http://i63.tinypic.com/24kz13r.jpg

[lilabner]

Back in 67, Ted Jones told me he was just about deaf from testing Unlimited Hydro's with Allisons and Merlins.