Topic: Looking for stainless 4-2-1 "flat" collector headers.

[GNGSXR]

All the headers I am finding have a rather large collector underneath the motor. I am looking for stainless steel 4-2-1 style but with a "flat" style collector.
Anyone know where I can get a set?

[lucky]

All the headers I am finding have a rather large collector underneath the motor. I am looking for stainless steel 4-2-1 style but with a flat style collector.
Anyone know where I can get a set?

No such thing.
That is why there are no responses.

Cycle Exchange makes the 4-2-1 headers which have the
 most ground clearance of all the headers.

[GNGSXR]

Why is this not a big thing for people? There is plenty of room to make a 4-2-1 collector under our bikes.
CycleX has some nice stuff but it is raw steel unless i go with their drag bike setup. I was hoping to find a nice compact stainless system. Thank you for the help

[Duanob]

These guys might make one up for you:

http://www.coneeng.com/motorcycle_components.html

Anything is possible.

[750K]

Find someone to make you a custom exhaust. If you can't find one, make one.

[GNGSXR]

I reread my first post. I should not of used the word "flat".  Hopefully everyone knows what I meant.
Something like this. http://images.delkevic.co.uk/product123_2b.jpg

Instead of the monstrous beast I have mocked up quick here

[bjbuchanan]

Stock F headers and cb400f headers have the flat collector like that. Problem is the ground clearance on the right is shot if you still want to access your sump and oil filter without taking the pipe off.

You want serious ground clearance AND stainless with a flatter style collector, you gotta make your own. Motogp is the only stainless pipe you will find, it got good clearance, performance and sound but isn't a flatter collector

[evanphi]

These guys might make one up for you:

http://www.coneeng.com/motorcycle_components.html

Anything is possible.

Their stuff is awesome. Find the parts you need a put it together yourself! Or get someone to do it for you...

[lucky]

The Cycle Exchange 4-2-1 exhaust has the most ground clearance of all the headers.
Excellent price too.

[Djfob]

The Cycle Exchange 4-2-1 exhaust has the most ground clearance of all the headers.
Excellent price too.

Run this exhaust with my k8 lowered 2". No issues with clearance or complaints

[neevo]

These guys might make one up for you:

http://www.coneeng.com/motorcycle_components.html

Anything is possible.

This is the answer you are looking for. I am building a custom 4-1-2 system for my 400F project out of the collectors from Cone Eng (Megs). Will be running twin mufflers and couldn't find a system to suit:

[Parkwood60]

I don't see what your problem is with a square collector. Unless you are riding off road the space under the motor is all wasted space. The best flat collector you will find is the Honda F bike header, but its heavy, and its chrome plated mild steel.

Don't believe this guys hype, but I think he makes his own pipes so stainless may be an option http://www.x-pipe.com/motorcycle.html Though its gonna be 4-2-1-2

[Retro Rocket]

All the headers I am finding have a rather large collector underneath the motor. I am looking for stainless steel 4-2-1 style but with a flat style collector.
Anyone know where I can get a set?

No such thing.
That is why there are no responses.

Cycle Exchange makes the 4-2-1 headers which have the
 most ground clearance of all the headers.

1..rubbish

2..bull#$%*

Cone engineering has the flat 4 into 1 collector and there are tons of manufacturers that make 4 into 1 pipes that hug the engine, you can't go any higher than that mate, and their are hundreds of exhaust manufacturers that make pipes that you wouldn't have seen, You make some silly assumptions Lucky...., Try, "I don't think" next time...

http://www.coneeng.com/collectors.html

Scroll down for the flat collectors...
Flat collector prices...

http://www.coneeng.com/pdf/Flat%204-1%20&%203-1%20Collector%20PDF.pdf



Cone engineering has the flat 4 into 1 collector and I can't remember the name but a US manufacturer used to make a flat collector 4 into 1,  there are tons of manufacturers that make 4 into 1 pipes that hug the engine, Thats all the ground clearance you get unless they are like scrambler pipes, and their are hundreds of exhaust manufacturers that make pipes that you wouldn't have seen, You make some silly assumptions Lucky...., Try, "I don't think" next time...

[jamesbekman]

Here you go.

http://www.ebay.com/itm/1977-Honda-CB750-Super-Sport-Factory-4-Into-1-Exhaust-Headers-with-shims-/321168707846?pt=Motorcycles_Parts_Accessories&hash=item4ac7259106

[KJ790]

Like others have said, the stock 4-1 header off of the F model is the shape you are looking for, but it is not stainless. You could always get it nickel plated so that it will not corrode. I am using the stock F header on my 836 and it gives pretty good clearance, even after lowering the bike.

[Parkwood60]

Maybe the correct question is "why am I lowering my bike?"

The stock CB750F pipe is already chrome plated, nickle plating it won't make it any more corrosion resistant. In fact I believe the process is usually copper plate, nickle plate, chrome plate over the top of them. You could get it nickel plated to look like stainless steel, but chrome will last longer without rusting.

[KJ790]

Maybe the correct question is "why am I lowering my bike?"

The stock CB750F pipe is already chrome plated, nickle plating it won't make it any more corrosion resistant. In fact I believe the process is usually copper plate, nickle plate, chrome plate over the top of them. You could get it nickel plated to look like stainless steel, but chrome will last longer without rusting.

Nickel would look more like stainless after it is run through a heat cycle with the engine. Chrome has very good wear properties, but it is actually has very poor corrosion resistance on its own. It is the nickel under the chrome that gives the corrosion resistance in typical applications. The problem is that most chrome plating only has .00005"-.00020" of nickel under it, and chrome platers typically use nickel with a low phosphorous concentration to aid in the adhesion of the chrome. A thicker layer of high phos nickel (.0015"-.0020" thick) will give far better corrosion resistance. This is what the military and navy spec out for most steel parts that require superior corrosion protection.

[GNGSXR]

I am not worried about ground clearance or the fact that the bike is on 17" wheels now.
This is purely aesthetics. The 750F pipe just makes for a cleaner look under the bike.

[lucky]

All the headers I am finding have a rather large collector underneath the motor. I am looking for stainless steel 4-2-1 style but with a flat style collector.
Anyone know where I can get a set?

No such thing.
That is why there are no responses.

Cycle Exchange makes the 4-2-1 headers which have the
 most ground clearance of all the headers.

1..rubbish

2..bull#$%*

Cone engineering has the flat 4 into 1 collector and there are tons of manufacturers that make 4 into 1 pipes that hug the engine, you can't go any higher than that mate, and their are hundreds of exhaust manufacturers that make pipes that you wouldn't have seen, You make some silly assumptions Lucky...., Try, "I don't think" next time...

http://www.coneeng.com/collectors.html

Scroll down for the flat collectors...
Flat collector prices...

http://www.coneeng.com/pdf/Flat%204-1%20&%203-1%20Collector%20PDF.pdf



Cone engineering has the flat 4 into 1 collector and I can't remember the name but a US manufacturer used to make a flat collector 4 into 1,  there are tons of manufacturers that make 4 into 1 pipes that hug the engine, Thats all the ground clearance you get unless they are like scrambler pipes, and their are hundreds of exhaust manufacturers that make pipes that you wouldn't have seen, You make some silly assumptions Lucky...., Try, "I don't think" next time...

I did not make assumptions.
 Cone Engineering makes 304 stainless 4 into 1 collectors, but look at the intake side and exhaust side OD and ID's.
I have not seen or heard anyone on any of the CB750 forums that have purchased one of those, not even on racing motorcycles. Why?

Also he said he wanted 4 into 2 into 1 style collector IN STAINLESS.
Maybe a special order from Cycle Exchange?

[lucky]

Delkevic makes exactly what he wants. 4-2-1 stainless for CB750.
I called them and they do not answer the phone. You have to leave an email and wait up to 24 hours.

Why doesn't he just buy it?  Probably because it costs $1500 or more.

[Retro Rocket]

Motogpwerrks 4into 2into1

http://www.ebay.com/itm/HONDA-CB750-K0-K7-F1F2-EXHAUST-STAINLESS-4-2-1-RACE-YOSHI-TYPE-CAFE-RACER-SOHC-/121365841174?pt=Motorcycles_Parts_Accessories&hash=item1c41f7c516

Schule also make a 4 into 2 into 1.... The motogpwerks pipe is great value for money...

[kmb69]

there is a pipe like you are looking for called the x-pipe I think. but it is 4-1-2. sometimes shows up on eBay. About $550 if I recall correctly.

[coneeng]

I know I am tacking onto an old post but have been receiving some questions based on this thread.

Flat 4-1 collectors are used more for clearance issues than performance, that is why you won't usually see them on a race or performance header.  A flat 4-1 should normally have a smaller outlet than a "stacked" 4-1, it is a less efficient collector so the smaller outlet helps keep the exhaust gas velocity u which is what really improves cylinder scavenging. 

If clearance and performance are important you are usually better with joining the four headers using (2) 2-1 collectors and then another 2-1 for the final junction.  And if clearance isn't critical then the 4-1 merge is usually the best choice.

[PeWe]

Which 4-2-1 is most effective on a CB750? 1-2 + 3-4 joins together and finally as 2-1. Tripple Y.
Or 1-4 + 2-3 joins together and finally as 2-1?

I guess the last when gases exit thru 1-4 pipes, second will be thru the other pair not interefereing with each other until into the last....
But that is not based on facts or experience just my thoughts.
This look fine.
http://i.ebayimg.com/00/s/MTA2NlgxNjAw/z/A-oAAOxyoA1RW0l4/$T2eC16V,!wsE9suw%29qc5BRW0l3Rnfw~~60_57.JPG

But it is a pity that the old RC 4-1 is not reproduced for the CB750.
http://forums.sohc4.net/index.php/topic,104048.msg1163854.html#msg1163854

[Don R]

 I'd copy the F2/3 header or just get one.  An F0/1 pipe won't fit a k frame. Honda rarely misses on the design.
 I have a 4/2 hooker header that sounds as good as any pipe I've heard on a 750. I think it's odd cyls on the left and even on the right. It's so sweet I don't even care if it makes power. It's on my Sandcast bike and I'm taking it off to put on a no number 4/4.