CB750 4 into 2 vs 4 into 1 Exhaust Sound

[@airmotivewelding8012]

No choice for me, the 4-1 is the ticket. Sound is a HUGE part of riding, that is the sound for me. The asymmetry look I also like. Great scooter, one of the best!

[@BrickHouseBuilds]

Couldn't agree more! A smooth buzz from this when riding is the best part

[@ledgic1317]

That is definitely not a scooter, that is a honda motorcycle with a hondamatic . So what's a called car that has a automatic? A car. The transmission on a bike doesn't determine if it's a scooter or not… it's not a step through design .

[@jefftuckercfii]

4 into 1 is the ticket. The sound is the best. Back in the day I had a VHR 4 into 1 on my 1979 GS1000E Suzuki. One day someone stole my muffler and I had to ride with just open headers for a week or so while the replacement muffler was shipped. It sounded so good I almost didn't want to put the new muffler on. You running your CB750 with the open headers brought back that memory for me.

[@BrickHouseBuilds]

For me its just waaaayyy too loud without the muffler but agreed on sounding mean

[@fritzfritze136]

I like more the optical symmetry with 4 into 2. The sound of the 750 is always very good.

[@BrickHouseBuilds]

Nothing wrong with that. I like the optical minimalistic look of a 4 into 1. Sounds good anyway you do it though

[@jay999tv]

I like this too

[@MRworldEtIkA]

4 to 1 just sounds so relaxing while 4 to 2 basically like there's 2 ninja 300s riding side by side.

[@BrickHouseBuilds]

Lol agreed!

[@grahamhider3754]

The more I see the old Honda . The more I love it. I no sad old man all best from England

[@MM_in_Havasu]

4:1 all the way! Remember so well when George Kerker made the first 4:1 header back in early 70's for the 750 Honda, they were handmade and had that unique exhaust note so characteristic of his pipes, and they WORKED. Thanks for a cool video!

[@BrickHouseBuilds]

I never got to experience those times but I bet it was awesome

[@ACECafeBikes]

I think I like the 4-1 better - sounds great!

[@BrickHouseBuilds]

Agreed!

[@isaacpulido9134]

4 into 1 sounds like a beautiful

[@BrickHouseBuilds]

Thank you

[@theaustralianconundrum]

@@BrickHouseBuilds I'm in Australia and have just bought a K2 that hasn't run for 5 years. It runs now after carb clean but doesn't look too nice. It's original and not a barn find or basket case but now I'm wondering how much to put into it? Hmmmmm. Over here one like the bike in this video go for AU$13,000-$16,000. That's US$8,500 to $11,000. Fully rebuilt with all new OEM parts here they sell for AU$40,000-$60,000 That's US$27,000 to $40,000

[@nigelcox7477]

Sweet. Open header sound gets right into your bones!

[@BrickHouseBuilds]

It stings!

[@luiscarvalho6807]

🦅QUANDO FOR EM UM ENCONTRO DE SUPER MOTOS , MUITO SE CONFUNDIRAO COM OS RONCO DAS MOTOS SEM SABER COM CERTEZA QUAL É QUAL , MAS A CB750 FOUR NUNCA NINGUÉM VAI SE CONFUNDIR🇧🇷✝️🌎🤠

[@discoray6644]

4 into 1 without a doubt

[@BrickHouseBuilds]

🤘🤘

[@deltalima4069]

4 into 1 definitely. Sounds richer and rounder.

[@BrickHouseBuilds]

Agreed

[@GrievenceCapitolist]

Love the " blackout" on the rims and spokes . I get a lot of comps on my 5 spoke black outs . 4 into 1 is my favorite .

[@BrickHouseBuilds]

Kept it really basic with some spray paint. Spokes are probably just dirty lol

[@flo41884]

It seems to me the 4 into 1 sounds like a generic modern inline four compared to the 4 in 2. The 2 cans also fit more "harmonic" to the rest of the bike.

[@BrickHouseBuilds]

I hear ya but a sohc 750 sounds like nothing else even with a 4into1. I can pick out the sound of these with my eyes closed at bike night. All personal preference though

[@luiscarvalho6807]

🦅 ATÉ COLOQUEI O FONE DE OUVIDO PARA OUVIR A SINFONIA DESTA OBRA DE ARTE CHAMADA CB750 FOUR HONDA🇧🇷✝️🌎

[@paler1der136]

4 into 1 sounds awesome and totally eliminated the Volkswagen Beetle exhaust note/ rattle, love it!

[@BrickHouseBuilds]

Never heard it compared to a beetle but now that can't be unheard! 🤣 goldwings for sure for obvious reasons

[@tomx9624]

4 into 1 sounds great. But 4 into 2 looks cool. Don't know man! It's your bike so whatever you prefer is the way!

[@BrickHouseBuilds]

Yup, no right or wrong it's just all personal preference

[@oledirtydoc3001]

Four into one definitely

[@BrickHouseBuilds]

🤘

[@oledirtydoc3001]

@@BrickHouseBuilds I might be picking up a 70 with a 76 motor, two other motors and a bunch of parts for $700

[@markb5985]

Had a Marvin 4 into 1 on mine in the 70s, wonderful sound 🥰

[@BrickHouseBuilds]

Hard to beat

[@MrDrywaller1]

The rotted out 4:4 stock pipes on my old cb sounded pretty bad ass too.

[@DocJonesGarage]

Sounds great, I know you use Pati for deliveries and such but I actually lol'd when I saw the exhaust strapped to the back 😄

[@BrickHouseBuilds]

She's definitely my parts hauler lol

[@joebutlersnr7017]

4.1 all day, I remember back in 72 waiting for a lift off a workmate and this bike started up , it was the first time I saw and heard a cb750 , I couldn't believe a motorcycle could sound like that, 11 years later I bought a 750 F1.

[@BrickHouseBuilds]

Hell yeah! They leave an imprint

[@xscoops1]

That exhaust came out great, sounds as good as any modern 4 cylinder!

[@BrickHouseBuilds]

🤘

[@kriswright1022]

I prefer the original 4 into 4, but that's just me.

[@BrickHouseBuilds]

Just personal preferences. I never listed for the original bike as it wasn't my era. I started liking these after seeing them modified

[@kriswright1022]

@@BrickHouseBuilds I know that cost has to factor into the decision as well, and original 4 into 4 are hard to find and super expensive. I rode a friend's 76 750 when it was brand new in 76, it was a mind blowing experience!

[@Mytwistedvoices]

It's unfortunate that camera dont quite get the complexity of the 4 into 2 sound. It is so much better in person.

[@BrickHouseBuilds]

I mean the same can be said with the 4 into 1 as well. On the first ride video I have a cell phone clip in a parking lot that really captures the sound well.

[@jdsalinger73]

Sounds smooth. So good for a 70's bike. I had a '78 super sport in highschool. This brings back memories.

[@BrickHouseBuilds]

🤘🤘

[@sbkpeace.24]

The first clip before you changed anything Sounds best imo I want a cb750 now 🤣

[@BrickHouseBuilds]

It definitely didn't sound bad and was enjoyable to ride.

[@Japjongetje]

That 4-1 sound can not be beaten and it just makes the bike look less cluttered from the back.

[@BrickHouseBuilds]

100% agreed

[@markfranks48]

Yes the 4 into 1 sounds the best to me

[@nickronin9618]

Awesome 👍

[@BrickHouseBuilds]

🙏🙏

[@mebeasensei]

No comment about the rideability and performance. I have a twin and a 2-1 set up is what I wanted, and I tried and tried and tried to set up the jetting and just couldn't get to ride smooth with soooo many combinations of jets and spacers. Eventually, had to re-install original 2-2 and original air boxes.. Bummer. How come you can get great tuning with BOTH? Not fair!!!

[@BrickHouseBuilds]

I think that comes down to the quality of the air filter, design of the pipes, and being willing to make changes until it runs like it should. It takes a ton of changes usually. Currently been fighting my XS650 and its exhaust which is a poor design for performance. In this case I have to live with 1 spot where the bike has a tiny hiccup. It has taken a ton of combos

[@yamahaxs750caferacer3]

4 into 1 🔥

[@BrickHouseBuilds]

🤘🤘

[@funnycontents2759]

Honda should relaunch this beast ❤

[@MotoMango]

4 into 2 sounds good, but maaaaaaan... The 4 into 1 is just mean sounding. Also cuts off weight for MORE SPEED 🙃😉

[@BrickHouseBuilds]

Simplify and add lightness

[@MotoMango]

@@BrickHouseBuilds BHB life motto xD

[@padrescout]

Exhaust sounds great! What’s that high pitched squeaking(first minute of the video)?

[@BrickHouseBuilds]

Just some sort of exhaust noise due to the design of the exits

[@westernsharpie]

Sounds good man. I got the same on mine.

[@BrickHouseBuilds]

🤘🤘

[@metalshop16]

4 in 1 "Fourever" !!! in 1988 , I used to ride a K2 equipped with 4in1 made in France , brand name Martin. Regards from France .

[@BrickHouseBuilds]

🤘

[@CliffNark]

You need to give us more footage of the 4-2 exhaust sound, 4-2 with a good exhaust sounds awesome

[@BrickHouseBuilds]

I have earlier videos of the bike with the 4/2 exhaust. Just check the playlist

[@CliffNark]

@@BrickHouseBuilds Gotcha boss

[@fryloc359]

I want to ride mine now, but it needs a new clutch.

[@BrickHouseBuilds]

The clutch on this one can't hold full throttle so I'm in the same boat. Its still able to go down the road though so I'm not in a rush

[@xtruma]

The dual 4-2 is the one I am looking to DIY now for my zr7 kawasaki...this is the only video I found of someone who actually did it with the sound comparison... I am worried about who could modify mine to 4 to2, and make it sound a bit like a harley!!

[@BrickHouseBuilds]

With the crank design and firing order I don't think you could ever get it close to that v twin sound.

[@xtruma]

can anyone tell me the type of engine configuration cb750 use? I have a zr7 (750cc also) but it does not sound the same as this, with the bruup bruup sound (4-1 or 4-2) Is this engine have 2 pistons at the same angle and the other 2 at a different same angle? Or does it have all 4 pistons each at a different angle?

[@BrickHouseBuilds]

This is an inline 4.

[@xtruma]

@@BrickHouseBuilds the zr7 is also an inline 4, but the difference is the degree angle in the piston arrangement..and that`s what gives yours an brrrup brrrup sound :)

[@BrickHouseBuilds]

@xtruma inline is inline. There is no difference in how the pistons are angled. The difference will come in camshaft design, compression, stroke, etc.

[@richardmassey2699]

You have your way you do👁

[@garycb8592]

I had a 4 into 2 on a CB550 back in the 70's and it was OK. But I have a CB750 now with a 4 into 1 Kerker, no comparison. The 4 into 1 wins every time. Just my 2 cents worth.

[@BrickHouseBuilds]

Can't beat the sound for sure

[@joachimboussoumah9994]

Idk honestly, the 4:1 is "throatier" but it sounds a tad "modern", whereas the 2:1 peashooters have these distinctive kinda rugged notes ! Two styles ! Couldn't chose 😅

[@BrickHouseBuilds]

Agreed. To a trained ear though you can absolutely pick this bike out(or any sohc4 Honda) in a crowd of modern bikes assuming all had 4 into 1 headers

[@BlueRoseSteakhouse]

Aesthetically the 4-2 but audibly 4-1. But really it’s a 750 there is no wrong way.

[@BrickHouseBuilds]

No wrong way is facts lol

[@josemiguelmunoz6985]

I prefer the 4 into 2 sound, is like more badass and the engine response seems to be faster. Aesthetically I also prefer the 4 into 2 exhaust system.

[@BrickHouseBuilds]

Thats fine, I like 4 into 1

[@Thewatson77]

4 into 1 ftw 🙌🏻

[@BrickHouseBuilds]

🤘

[@JeffKirschensteiner]

Wish I could give this video two thumbs up it's so good.

[@Ghillie63]

I think 4 into 2 matches the way it looks

[@BrickHouseBuilds]

Well now that this has a ton of paint chips it looks right at home lol

[@jimclarke1108]

4-1🏆

[@hurricane7777]

A partida elétrica não está funcionando?? Tem algum problema? 🤔

[@BrickHouseBuilds]

Starter works fine but I removed the cables and never put a solenoid on it as its a 1 kick bike. No need for a starter.

[@andymiller5611]

Awesome sounds, dude! 🤘

[@BrickHouseBuilds]

🙏🙏

[@stevewilkin3977]

Sounds great, is the starter US ?

[@BrickHouseBuilds]

The starter motor works fine but I purposely never put on a solenoid and just left it kick only. Its a 1 kick bike so no need for a starter

[@projectswithjw]

4 to 1 always. 👌👌

[@BrickHouseBuilds]

🤘🤘

[@wighatsuperreggie]

I love a good silent film.

[@BrickHouseBuilds]

🤘🤘 no words were needed for this one 😎

[@raymondpick4945]

Nice One Style it out m8.

[@BrickHouseBuilds]

🤘

[@donaldpate1863]

The open header was best!

[@BrickHouseBuilds]

Sounded mean but not useable at all. Much louder than it seemed in the video.

[@BS-cx7cx]

Great video thanks

[@BrickHouseBuilds]

Glad you enjoyed

[@preez77]

this vid should be titled ripped seat vs fixed seat 🤣

[@BrickHouseBuilds]

🤣🤣🤣

[@Aランチ-d9m]

Good Sound & Good Looking！

[@BrickHouseBuilds]

Thank ya!

[@paulbuckberry7683]

I’d have whatever is on your current intro. That sounds great!

[@BrickHouseBuilds]

Thats an XS850 I did. 3 into 1 with a muffler similar to the one on this cb750

[@PB-yt7bf]

@@BrickHouseBuilds Ahh, very interesting. I thought 3 into 1 but not 4 stroke. A friend once had a Suzuki GT750 with an Apple 3/1. Sounded very much like that with just a little burbble on the over run like that one.........................anyway, sound great.

[@thekingofkings777]

she's a beaut

[@BrickHouseBuilds]

Thank ya!

[@richiebainbridge2608]

4 into 1 for old times 👍

[@mikejones-qk2ou]

I prefer 4 into 4!

[@BrickHouseBuilds]

And you are allowed to have that opinion. I've just always preferred a 4/1

[@vezotonienu]

4in1 ❤

[@BrickHouseBuilds]

Simply the best on these bikes

[@ridefastdieold5475]

best sound

[@BrickHouseBuilds]

🤘🤘

[@peterbennett4948]

A no brainer the 4-1 sounds great 👍

[@BrickHouseBuilds]

👍👍

[@davidbisnette7673]

Cool video, great sounding bike

[@BrickHouseBuilds]

Thanks David

[@madmaniac360]

4 -1

[@BrickHouseBuilds]

🤘🤘

[@czortorys4401]

4>1

[@BrickHouseBuilds]

All just personal preference

[@TuckerCustomShop]

Sounds great!

[@BrickHouseBuilds]

🙏🙏

[@kevinchamberlain7928]

Your drive chain is stretched.

[@BrickHouseBuilds]

Thats not what this video is about. There are multiple things on the bike that are continually being addressed