Video on a exhaust idea i came up with (probably not the 1st to do this), using two 5HP mufflers on a opposed twin Briggs and Stratton. Thanks for Watching!!!
It'd be pretty cool to see it done like the dual exhaust on a car, where there's an H pipe connecting the exhaust from the two cylinder banks; it helps smooth out the pulses and make the engine sound better and less "poppy". You could do it here by cutting your elbows in half, threading the cut ends and installing tees to connect the two pipes with a couple of nipples and a union, then screw the mufflers into the tees. Like this: E E |----+----| | | M M E = exhaust port + = union M = muffler
I have 3 of those engines. 18hp, 19.5hp and a 20hp.......They are AWESOME engines. The 20hp is the Industrial version. I run the 3 screw fuel pump with adjustable low idle mixture.
I just screw the mufflers directly into the head then shape and weld the pipes to them, that way you can get more creative . I have about 17 of these engines. I like them better than the OHV V-Twins. They sound so cool.
+Robert Perrigo That is a good idea too! wow! 17!!! I have 2 of these, this 19.5 and the 14HP on my Montgomery ward. I have several 12HP and 11HP single cylinder flatheads though. I agree with you, I much prefer these, not that the V twins are bad, i just prefer flatheads. Thanks for Watching!!!
+Anthony Browning I'm old school, I like the more simple setup, I've had much more luck with flatheads then OHV, valves always backing off, or problems with the compression release, alot of stuff like that. But Don't get me wrong, OHV's are great motors, I like them too, just not as well as flatheads. With my experience, i've found flatheads to be more reliable overall. Thanks for Watching!!!
You should connect the two with a section of tubing. This will create a H exhaust. The H shape will create a scavenging effect in the exhaust. Witch will help with performance.
Go to a muffler shop that you know and make some custom pipes going to the back of the mower you gonna put it on and put cherry bombs in the pipes somewhere in the middle. Should sound good ~!~!
+Boo luquette haha I hear ya! Next summer I do have a muffler project planned for a mini tractor i just got, it should be interesting haha Thanks for Watching!!!
You could really pimp one of those mowers up big time; alloy wheels; Ferrari paint job, sky's the limit. Or if you wanted it 'Chav'; under-deck neon's and go-faster stripes :) Thanks for sharing.
Thanks! I didn't, i bought it that way, go to the electrical department at lowes or home depot and you can find that there, for this engine its 3/4" pipe thread, for single cylinders (like a 12Hp flathead) its 1" pipe thread. They do have a good sound! Thanks for Watching!!!
It sounds pretty nice.. kinda like an airplane engine. It like if you could find a horizontal shaft b&s 20 hp opposed twin like that one and set it up with a propeller and gett’r rigged up on a hang glider… with that same exhaust set up though.
I've got one on a Craftsman I've gone through and just got an adjustable jet carb for it. Runs like a Swiss watch instead of surging all the time becase of the factory lean jetting.
fnaguitarplayer9 Sure. Don't know exactly what the carb came off of but it bolted right up to the 19.5/20. No difference in bore size much but with that killer engine it's vastly ovcerpowered anyway. I just needed it to idle down so I could back a trailer. Wished someone would make a kit to re-jet the non adjustables.
I hear ya, it might be the same as my 14 has on it. can't beat these engines. I know right, you would think they would. you can though, if your brave enough (never have done it myself) to drill them out, i've heard of it being done, but you have to be careful not to take it to far!
fnaguitarplayer9 I don't have the micro drill bits or the knowhow so the carb was my best deal. Now I've got a surging spare. Shame the tops won't swap.
I hear ya, that is a shame, i wander if eccarburetors.com makes jets for them, since they use these alot for lawn mower racing, thats the only place i can think of that might have a solution to it.
The 1 I have is just like this and at idle it's rich as hell I adjusted the carb till the low speed surge stopped and u got to be outside not in the shop running at idle it's burn your eyes bad rich just mine maybe but it will idle at sounds like 400 or 500 rpm with no problem and never surge so I put new gaskets in the fuel pump and in the carb same thing !
+fnaguitarplayer9 please help if u can I have a question me and my dad just got a riding lawn mower Murray with the same exact engine like this one for free we had to put a ignition in it but when we put a new battery in it it won't do nothing do u know Y its doing this I really would like to have it run but it does nothing not even the starter makes a noise just dead please help
sounds like a bad key switch or solenoid, you can (carefully) take a screwdriver across the 2 posts on the solenoid, if it cranks then, you either have a bad solenoid or a bad key switch. Possibly a bad starter, if it still doesn't do anything when you cross it. Just be careful it will spark alot and can weld itself to it. Thanks for Watching!!!
Kohler KT725 7000 series Engine 22 horsepower 725cc V Twin 3 year unlimited hour warranty warranty on Engine covers commercial use also....Now that's a Engine
+GT Nut I wouldn't say a natural knock, but they are known for valve noise, like lifter tick, etc. The upper cylinder is the one that people will have problems with throwing rods, or problems of that sort, because its harder for the oil to get to it. It might just needs some valve work done to it, if not, then it may be a rod knocking. Now some single cylinders will have a knock at idle, usually do to play in the synchro balancer. Thanks for Watching!!!
Thanks for the video and good idea, think I'm gonna try it! I just bought a 2000 model Briggs Twin ll 17hp opposed twin I/C engine that I want to mount on our Snapper RER. Can you tell me if the mounting bolt pattern is the same as on a '97 Briggs 11.5 hp flat head? Also, this engine has 3 wires coming from under the flywheel, a black w/red stripe, a yellow and a white. I'm assuming at this point that one of them is to run lights? Also, do these engines have fuel shut off solenoids? Trying to figure out what I'm gonna have to do to mount and wire this thing up.....
Your welcome! i hear ya! No the opposed twins have a different bolt pattern. however some frames will have 2 sets of holes drilled to fit other engines, my test frame which is a old murray frame has the other set. You should have 2 wires that are usually together, one is for charging, one is for lights, the 3rd wire is probably the shutoff wire. i don't think these motors ever had used a fuel solenoid, i haven't seen on yet that had one on it. hope this helps! Thanks for Watching!!!
fnaguitarplayer9 I got the engine mounted and running. I had to make a new mounting hole template and drill new holes cause I wanted the carb, exhaust etc to be on the back of my Snapper instead of the front for easier access when I need to work on it. I put a brand new starter on, the original had a burnt wire on the armature. Also gave it a new air filter, plugs and a new battery. I'm getting ready to head to Lowe's to get the elbows and mufflers. I also need to get a longer throttle cable, 53" is a tad short. I noticed that the engine started surging while I was cutting grass, I had to run it with open pipes cause the muffler that came with it won't mount on this mower without making a new bracket. Not sure if this has anything to do with the way it's been running but I adjusted the governor and it ran good for awhile and started surging again. I re adjusted it and tighten the nut more thinking I didn't tighten it enough the first time. It runs better but it seems to idle too fast. Even if I adjust the idle screw down the governor takes over and won't allow it to idle down like it should. The only thing I knew to do was bend the governor spring tab in some and that helped but I had to bend it quite a bit. Something just doesn't seem quite right about the way it idles, maybe I need to get a longer governor spring, or a looser spring. Not real sure what to do, I've never had this issue before but I've never had a twin engine before either. I'm still trying to figure out what to do. Other than that, the mower cuts real good !
I hear ya! I had to add a spring on this one, it wanted to race for some reason when i first got it. Usually surging is from the gov out of adjustment or to lean of a mixture, if the carb on yours has a mixture screw it might need to be turned out. It might smooth back out once you get some mufflers on it providing some back pressure.
fnaguitarplayer9 Thanks, yeah, I'll figure it out eventually...This one has the 4 screw fuel pump. I don't believe it has the mixture screw adjustment. Maybe I just need to clean it real good and maybe rebuild it. It's the one that's expensive to rebuild, about $30 on eBay. I think it's leaking a little gas between the carb and intake manifold, maybe it's sucking air. Anyway, what city and state are you in? My wife watches a lot of your videos with me, she likes this kind of stuff.... Wouldn't let me start it for the first time unless she could be here to hear it. We live in Owensboro, Ky originally from Middletown, Ohio....
fnaguitarplayer9 I'm thinking about making a video and put on UA-cam and hopefully someone can give me some ideas. I've been wanting to make some videos but I haven't had the patience to do it yet. When I want to work on something I just like to start on it and get it done. My tools aren't very organized at the moment and I spend too much time searching for tools....
Does it sound anything similar to a diesel engine by chance? I just bought an old Murray GT and it sounds similar to my dad's tractor w diesel engine and curious if something wrong or if that's how it supposed to sound
Briggs was bad about that, its the same exact engine! Another good example is the 17.5HP ohv engines, they labeled them from 15 all the way to 20 hp and its the exact same engine. On some they would change it like .5hp, like the 12 and 12.5, the only difference on them was the carburetor. Thanks for Watching!!!
i acquired this engine on a sears tractor yesterday. my problem is i cant get gas into the carb unless i dump it in from the top.. where is the fuel pump?
the fuel pump is in the front of the carburetor, there will either be 3 or 4 small bolts holding it together, you will probably need to get a new diaphragm and gasket for it, you may be able to revive the old one enough to get it running by soaking it in wd40 to soften but they usually won't last when you do that, but at least you should be able to get it running. I would suggesting getting the carb kit and taking it off and cleaning it real good too. Thanks for Watching!!!
I hear ya, I agree, it would collect water like this, I just threw it together one day to see what it would sound like, i took it back off right after making the video, i did consider running them off on one side. Thanks for Watching!!!
+R Verro I will put it on the list of videos to make this spring/summer, I was going to this year if this motor didn't want to run, because I rebuilt the carb and fuel pump about 4-5 years ago and let it set! thanks for watching!!!
First thing I do on ones without spark is if its a newer one without points and condenser, then i disconnect the shutoff wire on the coil and check for spark again, if you got spark then you have a wiring problem, if still no spark and the magnets are good on the flywheel, bad coil, If its the older type with points and condenser, then most of the time that is the problem, just need the points cleaned. If there is a excessive gap between the coil and flywheel that can cause it as well. Thanks for Watching!!!
I did something similar on a 20 hp opposed twin, except I used a 90° threaded coupling for each pipe. Worked pretty well
I hear ya! I want to feed them both into one of these mufflers, but never did any more with it. Thanks for Watching!!!
It'd be pretty cool to see it done like the dual exhaust on a car, where there's an H pipe connecting the exhaust from the two cylinder banks; it helps smooth out the pulses and make the engine sound better and less "poppy". You could do it here by cutting your elbows in half, threading the cut ends and installing tees to connect the two pipes with a couple of nipples and a union, then screw the mufflers into the tees.
Like this:
E E
|----+----|
| |
M M
E = exhaust port
+ = union
M = muffler
Thats a good idea, I never really thought of doing that on this. I might have to try this sometime, thanks for the idea and Thanks for Watching!!!
I have 3 of those engines. 18hp, 19.5hp and a 20hp.......They are AWESOME engines. The 20hp is the Industrial version. I run the 3 screw fuel pump with adjustable low idle mixture.
Wow I have3 of them to17 ,19’,20 never gone sell them they are rare now even if need to be rebuilt.
Would you happen to have a intake manifold and carburetor for sale for my 18.5 Briggs and Stratton
I just screw the mufflers directly into the head then shape and weld the pipes to them, that way you can get more creative . I have about 17 of these engines. I like them better than the OHV V-Twins. They sound so cool.
+Robert Perrigo That is a good idea too! wow! 17!!! I have 2 of these, this 19.5 and the 14HP on my Montgomery ward. I have several 12HP and 11HP single cylinder flatheads though. I agree with you, I much prefer these, not that the V twins are bad, i just prefer flatheads. Thanks for Watching!!!
fnaguitarplayer9
I have You-tube channel with a small tour of my shop if you like to visit .
why do you prefer the opposed twin over the OHV v-twins?
+Robert Perrigo I'll have to check that out!
+Anthony Browning I'm old school, I like the more simple setup, I've had much more luck with flatheads then OHV, valves always backing off, or problems with the compression release, alot of stuff like that. But Don't get me wrong, OHV's are great motors, I like them too, just not as well as flatheads. With my experience, i've found flatheads to be more reliable overall. Thanks for Watching!!!
You should connect the two with a section of tubing. This will create a H exhaust. The H shape will create a scavenging effect in the exhaust. Witch will help with performance.
And turn it down so it don't fill with water
Go to a muffler shop that you know and make some custom pipes going to the back of the mower you gonna put it on and put cherry bombs in the pipes somewhere in the middle. Should sound good ~!~!
+Boo luquette haha I hear ya! Next summer I do have a muffler project planned for a mini tractor i just got, it should be interesting haha Thanks for Watching!!!
You could really pimp one of those mowers up big time; alloy wheels; Ferrari paint job, sky's the limit.
Or if you wanted it 'Chav'; under-deck neon's and go-faster stripes :)
Thanks for sharing.
+grotekleum haha I hear ya! I always wanted to build a racing mower up, but never had the time/money to put into it. Thanks for Watching!!!
Pretty cool! How did you bend the pipe? I bought a Lowe's 44" cut mower with 18hp opposed twin. Best sounding engine they ever put on a lawn mower!
Thanks! I didn't, i bought it that way, go to the electrical department at lowes or home depot and you can find that there, for this engine its 3/4" pipe thread, for single cylinders (like a 12Hp flathead) its 1" pipe thread. They do have a good sound! Thanks for Watching!!!
I pack the pipe tightly with sand and bend it if you don't have a pipe bender,, or heat it but be safe and wear a mask
We need an opposed twin Facebook group
Who has a carb and intake for sale ? I need one now
It sounds pretty nice.. kinda like an airplane engine. It like if you could find a horizontal shaft b&s 20 hp opposed twin like that one and set it up with a propeller and gett’r rigged up on a hang glider… with that same exhaust set up though.
I am just glad you do not live next to my husband. Racing around the yard mowing grass.
haha Thanks for Watching!!!
I love to put that motor on my lawn mower, it had a 10 horse on it. and I now have a 12.5 horse on it. and it will mow like crazy.
+McCuneWindandSolar Heard that, it would be a huge difference, these have a ton of low end torque. Thanks for Watching!!!
I know how I'm doing my exhaust now ,, flow master est your heart out lol
Really sounds good!
+Alan Marshall I thought so too! Thanks for Watching!!!
I've got one on a Craftsman I've gone through and just got an adjustable jet carb for it. Runs like a Swiss watch instead of surging all the time becase of the factory lean jetting.
I hear ya! My other opposed (14 horse) has the adjustable carb on it, its must better. Thanks for Watching!!!
fnaguitarplayer9 Sure. Don't know exactly what the carb came off of but it bolted right up to the 19.5/20. No difference in bore size much but with that killer engine it's vastly ovcerpowered anyway. I just needed it to idle down so I could back a trailer. Wished someone would make a kit to re-jet the non adjustables.
I hear ya, it might be the same as my 14 has on it. can't beat these engines. I know right, you would think they would. you can though, if your brave enough (never have done it myself) to drill them out, i've heard of it being done, but you have to be careful not to take it to far!
fnaguitarplayer9 I don't have the micro drill bits or the knowhow so the carb was my best deal. Now I've got a surging spare. Shame the tops won't swap.
I hear ya, that is a shame, i wander if eccarburetors.com makes jets for them, since they use these alot for lawn mower racing, thats the only place i can think of that might have a solution to it.
That sure sound good man !!
+ShawnMrFixit Lee Thanks! I though so too, reminds me off a early model car engine, has that flathead, low tone sound to it! Thanks for Watching!!!
The 1 I have is just like this and at idle it's rich as hell I adjusted the carb till the low speed surge stopped and u got to be outside not in the shop running at idle it's burn your eyes bad rich just mine maybe but it will idle at sounds like 400 or 500 rpm with no problem and never surge so I put new gaskets in the fuel pump and in the carb same thing !
Cool. Almost snowblower working time.
+John Strange Thanks. Yeah it is getting to be that time, wish i had one to make some videos on haha Thanks for Watching!!!
+fnaguitarplayer9 please help if u can I have a question me and my dad just got a riding lawn mower Murray with the same exact engine like this one for free we had to put a ignition in it but when we put a new battery in it it won't do nothing do u know Y its doing this I really would like to have it run but it does nothing not even the starter makes a noise just dead please help
sounds like a bad key switch or solenoid, you can (carefully) take a screwdriver across the 2 posts on the solenoid, if it cranks then, you either have a bad solenoid or a bad key switch. Possibly a bad starter, if it still doesn't do anything when you cross it. Just be careful it will spark alot and can weld itself to it. Thanks for Watching!!!
+fnaguitarplayer9 thanks and love the video we well try to see if she well start
Your welcome!
3:52
Kohler KT725 7000 series Engine 22 horsepower 725cc V Twin 3 year unlimited hour warranty warranty on Engine covers commercial use also....Now that's a Engine
Do these engines just have a natural knock sound to them? I have an '87 12.5 that has an "almost knock" sound, but otherwise runs great.
Sounds great!
+GT Nut I wouldn't say a natural knock, but they are known for valve noise, like lifter tick, etc. The upper cylinder is the one that people will have problems with throwing rods, or problems of that sort, because its harder for the oil to get to it. It might just needs some valve work done to it, if not, then it may be a rod knocking. Now some single cylinders will have a knock at idle, usually do to play in the synchro balancer. Thanks for Watching!!!
+fnaguitarplayer9 Thanks!
+GT Nut Your welcome!
The knock is caused by carbon deposits inside the head. Scrape it off and clean it up and it'll quit.
Same here I have 5 sitting in my shop they all sound the same way
With a little work you can get that plug wire out of the old coil and push a new one in there color of your choice
I've actually been wanting to do that! Thanks for Watching!!!
Thanks for the video and good idea, think I'm gonna try it!
I just bought a 2000 model Briggs Twin ll 17hp opposed twin I/C engine that I want to mount on our Snapper RER. Can you tell me if the mounting bolt pattern is the same as on a '97 Briggs 11.5 hp flat head? Also, this engine has 3 wires coming from under the flywheel, a black w/red stripe, a yellow and a white. I'm assuming at this point that one of them is to run lights? Also, do these engines have fuel shut off solenoids? Trying to figure out what I'm gonna have to do to mount and wire this thing up.....
Your welcome! i hear ya! No the opposed twins have a different bolt pattern. however some frames will have 2 sets of holes drilled to fit other engines, my test frame which is a old murray frame has the other set. You should have 2 wires that are usually together, one is for charging, one is for lights, the 3rd wire is probably the shutoff wire. i don't think these motors ever had used a fuel solenoid, i haven't seen on yet that had one on it. hope this helps! Thanks for Watching!!!
fnaguitarplayer9 I got the engine mounted and running. I had to make a new mounting hole template and drill new holes cause I wanted the carb, exhaust etc to be on the back of my Snapper instead of the front for easier access when I need to work on it. I put a brand new starter on, the original had a burnt wire on the armature. Also gave it a new air filter, plugs and a new battery. I'm getting ready to head to Lowe's to get the elbows and mufflers. I also need to get a longer throttle cable, 53" is a tad short. I noticed that the engine started surging while I was cutting grass, I had to run it with open pipes cause the muffler that came with it won't mount on this mower without making a new bracket. Not sure if this has anything to do with the way it's been running but I adjusted the governor and it ran good for awhile and started surging again. I re adjusted it and tighten the nut more thinking I didn't tighten it enough the first time. It runs better but it seems to idle too fast. Even if I adjust the idle screw down the governor takes over and won't allow it to idle down like it should. The only thing I knew to do was bend the governor spring tab in some and that helped but I had to bend it quite a bit. Something just doesn't seem quite right about the way it idles, maybe I need to get a longer governor spring, or a looser spring. Not real sure what to do, I've never had this issue before but I've never had a twin engine before either. I'm still trying to figure out what to do. Other than that, the mower cuts real good !
I hear ya! I had to add a spring on this one, it wanted to race for some reason when i first got it. Usually surging is from the gov out of adjustment or to lean of a mixture, if the carb on yours has a mixture screw it might need to be turned out. It might smooth back out once you get some mufflers on it providing some back pressure.
fnaguitarplayer9 Thanks, yeah, I'll figure it out eventually...This one has the 4 screw fuel pump. I don't believe it has the mixture screw adjustment. Maybe I just need to clean it real good and maybe rebuild it. It's the one that's expensive to rebuild, about $30 on eBay. I think it's leaking a little gas between the carb and intake manifold, maybe it's sucking air. Anyway, what city and state are you in? My wife watches a lot of your videos with me, she likes this kind of stuff.... Wouldn't let me start it for the first time unless she could be here to hear it. We live in Owensboro, Ky originally from Middletown, Ohio....
fnaguitarplayer9 I'm thinking about making a video and put on UA-cam and hopefully someone can give me some ideas. I've been wanting to make some videos but I haven't had the patience to do it yet. When I want to work on something I just like to start on it and get it done. My tools aren't very organized at the moment and I spend too much time searching for tools....
Would love 2 of these on a 16hp vanguard.
I think it would work, as long as the pipe is similar in size it would probably be alright. Thanks for Watching!!!
@@fnaguitarplayer9 I ordered 2 for 18 bucks total, just need to weld a 3/4 90 angle pipe on the flange and voila.
Does it sound anything similar to a diesel engine by chance? I just bought an old Murray GT and it sounds similar to my dad's tractor w diesel engine and curious if something wrong or if that's how it supposed to sound
I have the 20 .5 engine and I never could figure out why a 19.5 only jumped to 20.5 ? Oh yeah you have a leak by the fuel pump hose ..
Briggs was bad about that, its the same exact engine! Another good example is the 17.5HP ohv engines, they labeled them from 15 all the way to 20 hp and its the exact same engine. On some they would change it like .5hp, like the 12 and 12.5, the only difference on them was the carburetor. Thanks for Watching!!!
How about gravity fed twin carbs ?? Whoo-hoo !
I have actually thought of doing something like that! I've never liked the intake manifold design on these. Thanks for Watching!!!
They always could use larger jetting on the main.
Thanks for Watching!!!
What year was this engine made in because my 16,5 was made in 2000
I'm thinking its a 2005, if not its around there, i know its early 2000's. thanks for watching!!!
Look at the code. The first 2 numbers is the mfg. date.
i acquired this engine on a sears tractor yesterday. my problem is i cant get gas into the carb unless i dump it in from the top.. where is the fuel pump?
the fuel pump is in the front of the carburetor, there will either be 3 or 4 small bolts holding it together, you will probably need to get a new diaphragm and gasket for it, you may be able to revive the old one enough to get it running by soaking it in wd40 to soften but they usually won't last when you do that, but at least you should be able to get it running. I would suggesting getting the carb kit and taking it off and cleaning it real good too. Thanks for Watching!!!
Sorry but that's just not me . I'd definitely be running it down the side .But it's your rig man . Nice idea though !
I hear ya, I agree, it would collect water like this, I just threw it together one day to see what it would sound like, i took it back off right after making the video, i did consider running them off on one side. Thanks for Watching!!!
Would you consider making a video on how to rebuilt the carburetor on this particular model ?
+R Verro I will put it on the list of videos to make this spring/summer, I was going to this year if this motor didn't want to run, because I rebuilt the carb and fuel pump about 4-5 years ago and let it set! thanks for watching!!!
I've got a 19.5 vertical, I want to make it horizontal, any advice.
Theres alot involved when doing that, i'd suggest trying to find a horizontal engine instead of converting one to it. Thanks for Watching!!!
I have a kohler magnum twin and it misfires the same way, how do i fix this???
I'd clean the carb and try new plugs first, if it still does it may be the coil(s). Thanks for Watching!!!
fnaguitarplayer9 turned out it was the plug (took the plug boot off And accidentally found out the hard way lmao)
Our flat head twin quit. Checked the spark...none. What should I look for. A loose wire or a bad coil??????
First thing I do on ones without spark is if its a newer one without points and condenser, then i disconnect the shutoff wire on the coil and check for spark again, if you got spark then you have a wiring problem, if still no spark and the magnets are good on the flywheel, bad coil, If its the older type with points and condenser, then most of the time that is the problem, just need the points cleaned. If there is a excessive gap between the coil and flywheel that can cause it as well. Thanks for Watching!!!
Good old Magnatron.
i dont understand how Americans can make a video about a mower exhaust so long ?
haha Thanks for Watching!!!
Just straight pipe the damn thing.
LOL i've done it to see how it sounds. Thanks for Watching!!!
3:25