Topic: 4-2-1 Exhaust?

[DsKing416]

Does anyone know where I can find a 4-2-1 exhaust for a CB550 I'm building an retro-modern cafe racer. Mono-shock, fuel injected, dual front disc, big bore. Now I am looking for the end all exhaust. 

[Laminar]

I'd like to hear more about the fuel injection. Are you using a MegaSquirt? How are you overcoming the lack of electrical power available?

[DsKing416]

I'll use the cycle exchange stator and a throttle body and fuel rail and ECM from a 2006 cbr600 run by a Power Commander 3. The cbr parts you can get for around $300 at any bike salvage. The Power Commander 3 costs around $260. This makes the hardest step the intakes and I'll make them out of steel them ceramic coat them inside and out.

If you have any questions let me know. The new yamaha ECMs are fly by wire so they do all your adjusting for you on the fly you just need to give them the O2 sensors they want and new parameters with the Power Commander 3.

[captaincrash80]

Would the same kind of setup work on a 750 engine? I have a spare motor that needs to be rebuilt anyway and I've been looking for cool ideas.

[Laminar]

I'll use the cycle exchange stator and a throttle body and fuel rail and ECM from a 2006 cbr600 run by a Power Commander 3. The cbr parts you can get for around $300 at any bike salvage. The Power Commander 3 costs around $260. This makes the hardest step the intakes and I'll make them out of steel them ceramic coat them inside and out.

If you have any questions let me know. The new yamaha ECMs are fly by wire so they do all your adjusting for you on the fly you just need to give them the O2 sensors they want and new parameters with the Power Commander 3.

Yamaha? The CBR600 is a Honda. How hard will it be to adapt the throttle tube to the throttle bodies?

[DsKing416]

I was just saying if you want a fly by wire you need to go with a Yamaha setup. If you want to fine tune it yourself use a Honda.

Yes this will work with any four cylinder engine including car engines. You can make these engines even more modern than "MOST" sport bikes with a few mods and $1000.

P.S. I still need a 4-2-1 exhaust!!! Like the Cycle Exchange 750 exhaust.

A big bore fuel injected 750 would be a beast.

[Laminar]

I was just saying if you want a fly by wire you need to go with a Yamaha setup. If you want to fine tune it yourself use a Honda.

I guess I misunderstood you. I interpreted "fly-by-wire" in the aircraft sense - your controls are physically connected to the controlled elements, but to a computer that takes that input and adjusts the controlled elements itself. So instead of having a cable connecting your throttle tube to the throttle body, you'd have a potentiometer at the throttle tube going to a computer and a servo at the throttle bodies opening and closing them as the computer deemed necessary.

I believe you're talking about it more in the sense of the Mass Air system on my car that will adjust its own parameters based on the engine's needs, leaning over time.

[Laminar]

A big bore fuel injected 750 would be a beast.

Like this one?

[CBJoe]

Not seen a 4-2-1 Exhaust System for a CB550...  only the one from Cycle X for the CB750.
You'd probably get better responses posting in the Tech Forums.

http://forums.sohc4.net/index.php?board=2.0

You should start a new thread here in the project forums to show off your project..... We like PICS 
Good luck on your search.

Cheers, Joe

[DsKing416]

The project is waiting for a pay check. I have a few photos and will post a project soon just assembling a parts source list. The check will be here in two weeks. Then it's play time.

And yes like that one. The only thing is the intakes, I want a cleaner look and all the same length.

[flipprboi]

Do you have any specific specs? size of header, collector, muffler, bends? 

benjie
www.benjiescaferacer.com

[DsKing416]

I love (LOVE) his work, but for exhaust the only 4 into 1 he sells is a Yoshi copy that you can get for cheeper elsewhere. Also only for the 750.

If he does custom work or other exhausts I would love to see them.

I can't explain how much i love his work I want the Pinas tank SO bad.

[CBJoe]

I love (LOVE) his work, but for exhaust the only 4 into 1 he sells is a Yoshi copy that you can get for cheeper elsewhere. Also only for the 750.

If he does custom work or other exhausts I would love to see them.

I can't explain how much i love his work I want the Pinas tank SO bad.

Its a good thing that you were very flattering    That was benjie you were talking to 

Cheers, Joe

[DsKing416]

That's cool. I wasn't kidding he makes the coolest cafes in the world. I want a little different than his styles though. My wallpaper on my laptop is almost always a photo of his bikes.

I want more modern and he does classic with new lines.

[Zaipai]

That's cool. I wasn't kidding he makes the coolest cafes in the world. I want a little different than his styles though. My wallpaper on my laptop is almost always a photo of his bikes.

I want more modern and he does classic with new lines.

Yes between Benji and Carpy I have lots of wallpapers to change it up! I have one of each on my laptop, desktop, Mac and Linux boxes.. My wife is probably sick of seeing so many CB's around.. :-)

[DsKing416]

Yup. I'll let you know when I get some photos worth posting.

[HB-1fan]

Hi DS , I have an Idea that I am going to use eventually and you might be interested, also! The early decade(01'-03' I believe) gsxr 1000 header stock header is almost the exact diameter as my period 550 kerker pipe. If you have the means to modify it,(titanium) its a beautiful 4-2-1 pipe. The spacing at the head is not far off. The pipes would have to be modified between the 1st and 2nd elbows. Not as much would be needed if you could remote the oil filter. Pull up a pic of the pipe on ebay and take a look. You would probably need to to make one. Try to get them from the same year as Ti is pretty picky to weld.
 Where are you in FL, I'm in winter park and atleast have one you can look at.
Just an idea and hope it helps!!!!

HB

[HB-1fan]

Imagine the possibilities!!!!!

http://cgi.ebay.com/ebaymotors/2007-2008-Suzuki-GSXR-1000-OEM-Exhaust-Header-Pipes_W0QQitemZ390066445064QQcmdZViewItemQQptZMotorcycles_Parts_Accessories?hash=item5ad1c59b08&_trksid=p4506.c0.m245

Buy 2(light shipping) pay someone a couple hundred bucks for the work and you would have a sweet pipe for the $$.  It also looks like they changed alot(still 4-2-1) over the years. Maybe a different config. works better for your EFI plans!

HB

[Laminar]

Wow, that's way cheap.

[DsKing416]

I was wondering if anyone knew of a header for a different bike that would only need a few mods.

Thanks that's great.

I'm in Melbourne so I can definitely come see it.

It looks like you can just spread them a little on the 1 and 4 pipe and then alot on the 2 and 3 to fit the filter. Is that what you did?

Great reply!!! Love it, it's like someone gets what I'm trying to get done!

[DsKing416]

Moving forward on an extreme budget. Still no big check I found a Pro built lower end plasti gauged everything and it's all new except the cases. So excited. I'm looking for a 605 big bore kit to finish the engine and a HOT cam if anyone has one.

Thanks I love all of you.
Jason

Benji I saw a cb750  on CL.com for  with one of your tanks on it for a $1000. I almost died If I had a grand I would have bought it just for the tank and threw another tank on the bike and sold the 750. Just to keep the tank. In all it's polished aluminum glory.

Alas I'm broke

[DsKing416]

I just picked up a set of those gsxr pipes and I'm having my head flowed to them. Not a perfect fit but most certainly will work. The 1 and 4 need to be wider a quarter of an inch and so do the 2 and 3. The titanium is very thin and flexible. The mounting hardware just needs to be drilled a little wider and then use some washers. I'll Post some picks when I get them back maybe next monday. I'm also worried about the over all angle of the header. It's made for a bike with top end slanted way more forward which may make me have to bend the pipes. Well, have someone who can work with titanium bend them.