do anyone knows what the exhaust collector looks like?

[mtc]

on the inside, and is there such a product that can collect into a single muffler instead of the stock 2? while keeping the head pipes and a single can of choice?

[Motofun]

I think you're asking for a lot, there.  It would take a custom collector with a larger outlet to accommodate a single canister.  Simply capping off the stock collector wouldn't work as the outlet would be too small.  Why the desire to avoid new headers?

[mtc]

I think you're asking for a lot, there.  It would take a custom collector with a larger outlet to accommodate a single canister.  Simply capping off the stock collector wouldn't work as the outlet would be too small.  Why the desire to avoid new headers?

there was no mention on my part about capping off any collector, that came from you.

from a simplicity standpoint i don't think it is asking for a lot , it takes a lot more to fit, jig and mass produce and manufacture head pipes, with or without collectors, that fit, it's just 1 piece i have seen many 4 into 2
such as this one

https://www.ebay.com/itm/FJ1100-FJ-1100-FJ1200-FJ-1200-SP-EXHAUST-COLLECTOR-BOX-NEW-UPGRADED-DESIGN/132176571484?hash=item1ec6566c5c:g:CpwAAOSwt2JaltC-

why not a 4 into 1?

just research and cost benefit analysis , new pipes will cost a lot and is disproportionately high for  a $1100.00 35 year old FJ ( unfortunately)  it would be a very good product if someone "made" and distributed a collector with "your" larger outlet

still don't know what the insides look like do you know, are they pipes or a manifold?

[Pat Conlon]

To build a good header, you will have more money into the material than you realize.
The secret sauce on a 4 into 1 header is the merge collector.
$300 for a good one.
https://burnsstainless.com/products/4-into-1-base-collectors

[mtc]

To build a good header, you will have more money into the material than you realize.
The secret sauce on a 4 into 1 header is the merge collector.
$300 for a good one.
https://burnsstainless.com/products/4-into-1-base-collectors

that is too good, but a flat one for ground clearance.. my opinion is there aren't much difference in performance for an inferior conceptualize unit vs. and highly engineered item

for the casual rider, (i know some worship the FJ and cost is no object), it is my worship but cost is the complete object for this hobby du jour.

[CutterBill]

To answer your question... What does the collector look like on the inside?

It's just a box. No baffles. No diverters. No flow control devices (that I could see.) Just a box with 4 pipes in and two pipes out.
Bill

[mtc]

To answer your question... What does the collector look like on the inside?

It's just a box. No baffles. No diverters. No flow control devices (that I could see.) Just a box with 4 pipes in and two pipes out.
Bill

thank you sir for this information, and it still went ( in the right hands 10.99 seconds in the quarter back in 1985)

and plenty of owners are still riding with this set up, a restrictive box with 4 in and 2 out

[Sparky84]

and plenty of owners are still riding with this set up, a restrictive box with 4 in and 2 out

I prefer the look with Toucans, and a restrictive box makes no difference to me.

So all you want is a just a common 4 into 1 system? But I don't think you won't be able to keep the headers!
And why would you! They'll probably be restricting the flow of the new system.

http://www.fjowners.com/index.php?topic=7073.0

Cheers
Alan

[Pat Conlon]

.......and plenty of owners are still riding with this set up, a restrictive box with 4 in and 2 out

Yep, like me

[mtc]

and plenty of owners are still riding with this set up, a restrictive box with 4 in and 2 out

I prefer the look with Toucans, and a restrictive box makes no difference to me.

So all you want is a just a common 4 into 1 system? But I don't think you won't be able to keep the headers!
And why would you! They'll probably be restricting the flow of the new system.

http://www.fjowners.com/index.php?topic=7073.0

Cheers
Alan

not concerned with restricted air flow, the original pipes are used for all sorts of  speed related terrorizing , given aa larger diameter can, it this this can be overcome

ease of access and cleaning of chain
cosmetic appearance of a single can mounted higher tilted up
arguably weight savings
and same access to oil changing duties

[FJ1200W]

To build a good header, you will have more money into the material than you realize.
The secret sauce on a 4 into 1 header is the merge collector.
$300 for a good one.
https://burnsstainless.com/products/4-into-1-base-collectors

So true. Here are some pictures of "period correct" collectors as they came from the factory. Yoshimura and Supertrap.

I also have a Vance and Hines old style 4-1 but can''t find the pictures.

The Yoshimura cleaned up nicely, but nothing like a Burns. Tony Nicosia was making some nice collector merges back in the 70's.

And I was thinking of an early discussion we had when I opened a drawer to find not one, not two but three sets of OEM gaskets and I've bought a set or two and used them without even touching those.....

[FJ1200W]

To build a good header, you will have more money into the material than you realize.
The secret sauce on a 4 into 1 header is the merge collector.
$300 for a good one.
https://burnsstainless.com/products/4-into-1-base-collectors

Burns is art

Personally, the stock system with better flowing cans really compliments the FJ's powerband. Power when and where we all ride most of the time.

Generally a 4-1 will give you a flat spot but a nice bump in the upper RPM's - Where we don't ride all the time anyway.

And then there are the 4-2-1 systems, like RPM's, that also work well everywhere in the powerband.

At least that's my nickles worth

[Sparky84]

and plenty of owners are still riding with this set up, a restrictive box with 4 in and 2 out

I prefer the look with Toucans, and a restrictive box makes no difference to me.

So all you want is a just a common 4 into 1 system? But I don't think you won't be able to keep the headers!
And why would you! They'll probably be restricting the flow of the new system.

http://www.fjowners.com/index.php?topic=7073.0

Cheers
Alan

not concerned with restricted air flow, the original pipes are used for all sorts of  speed related terrorizing , given aa larger diameter can, it this this can be overcome

ease of access and cleaning of chain
cosmetic appearance of a single can mounted higher tilted up
arguably weight savings
and same access to oil changing duties

Well I don't clean chains..

Cosmetic appearance  IMO, is WAY better with symmetry ( Toucans ) but it's what YOU perceive as best appearance, ( I prefer sheilas with both cans) 

Weight savings, you can get still get lighter Toucan systems


Cheers
Alan

[mtc]

To build a good header, you will have more money into the material than you realize.
The secret sauce on a 4 into 1 header is the merge collector.
$300 for a good one.
https://burnsstainless.com/products/4-into-1-base-collectors

Burns is art

Personally, the stock system with better flowing cans really compliments the FJ's powerband. Power when and where we all ride most of the time.

Generally a 4-1 will give you a flat spot but a nice bump in the upper RPM's - Where we don't ride all the time anyway.

And then there are the 4-2-1 systems, like RPM's, that also work well everywhere in the powerband.

At least that's my nickles worth

now that is a aerodynamic collector, the others work just fine, just not optimal.

i read maybe i am wrong the intake ( incoming) need port and polish, flow benching, the exhaust side don't benefit from too much of that stuff, that is why most manufacturer  don't care or pay too much attention to how the pipes collect in the collector, maybe port matched from the exhaust port to the pipe contact point since it so close to the combustion chamber? causing turbulence, the scavenging of the pulses are sucking the gases out anyways if there is enough volume to avoid a traffic jam?

maybe that is why the 4 into 2 "box " works, i studied the looks of this box and it seems to be designed as a large crossover, roomy and channels flow, so there was some thought that went into it

[mtc]

and plenty of owners are still riding with this set up, a restrictive box with 4 in and 2 out

I prefer the look with Toucans, and a restrictive box makes no difference to me.

So all you want is a just a common 4 into 1 system? But I don't think you won't be able to keep the headers!
And why would you! They'll probably be restricting the flow of the new system.

http://www.fjowners.com/index.php?topic=7073.0

Cheers
Alan

not concerned with restricted air flow, the original pipes are used for all sorts of  speed related terrorizing , given aa larger diameter can, it this this can be overcome

ease of access and cleaning of chain
cosmetic appearance of a single can mounted higher tilted up
arguably weight savings
and same access to oil changing duties

Well I don't clean chains..

Cosmetic appearance  IMO, is WAY better with symmetry ( Toucans ) but it's what YOU perceive as best appearance, ( I prefer sheilas with both cans)  

Weight savings, you can get still get lighter Toucan systems


Cheers
Alan

a set of snakes on a vintage honda cb400 no symmetrical, to each his own, i like a pair as well, flip flopper, and that what i am running anyhows

https://images.search.yahoo.com/search/images;_ylt=Awr9JhXZ_bleQ3EA3gOJzbkF;_ylu=X3oDMTBsZ29xY3ZzBHNlYwNzZWFyY2gEc2xrA2J1dHRvbg--;_ylc=X1MDOTYwNjI4NTcEX3IDMgRhY3RuA2NsawRjc3JjcHZpZAM2aWhwb1RFd0xqS0VSY1JTV3A4ek9nVFFNall3TUFBQUFBQ0JyV2JXBGZyA3lzZXRfZmZfc3ljX2hwLXMEZnIyA3NhLWdwBGdwcmlkA21RSzZ0MmRHU3YyME93WWF3YzRjZ0EEbl9zdWdnAzEwBG9yaWdpbgNpbWFnZXMuc2VhcmNoLnlhaG9vLmNvbQRwb3MDMQRwcXN0cgNjYjQwMARwcXN0cmwDNQRxc3RybAMxMwRxdWVyeQNob25kYSUyMGNiNDAwBHRfc3RtcAMxNTg5MjQ3NDU5?p=honda+cb400&fr=yset_ff_syc_hp-s&fr2=sa-gp-images.search&ei=UTF-8&n=60&x=wrt#id=3&iurl=http%3A%2F%2Fwww.bikebound.com%2Fwp-content%2Fuploads%2F2017%2F06%2FHonda-CB400F-Cafe-Racer-1.jpg&action=click