Topic: 4 into 1 headers

[pjandrew99]

Please help me identify these headers. I bought them online for my K1. After a quick look, it doesn't seem like they would fit.
Thanks

[bryanj]

They might if you remove the exhaust spigots and fit studs plus get the finned collars and split collets from an F1 or later

[PeWe]

Buy a new low priced Delkevic 4-1.

[WhyNot2]

^^^^^^^^^What PeWe said^^^^^^^^^^^.......i just bought a set for my 750.

Also have the same system on my CB350F......

[newday777]

Please help me identify these headers. I bought them online for my K1. After a quick look, it doesn't seem like they would fit.
Thanks

1975/76 CB750F Super Sport headers

[madmtnmotors]

They definitely look like CB750F model headers. They will probably bolt up, but I believe the F models use a different rear brake pedal to clear the pipe. The K model brake pedal may interfere with the pipe.

[ekpent]

1977-78 CB750F header which seem to be a little different then the 75-76.  https://www.ebay.com/itm/233410599581?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=233410599581&targetid=1263433204974&device=c&mktype=&googleloc=9017307&poi=&campaignid=14859008593&mkgroupid=130497710760&rlsatarget=pla-1263433204974&abcId=9300678&merchantid=131375545&gclid=Cj0KCQiAraSPBhDuARIsAM3Js4ovfw5MELH62A9mLsPjf1KNADeNfZ53BBH3FU-tzznDFvy9x25bQYAaAu05EALw_wcB

[Jerry Rxman Griffin aka MuthaF'er]

Please help me identify these headers. I bought them online for my K1. After a quick look, it doesn't seem like they would fit.
Thanks

1975/76 CB750F Super Sport headers

Nope, not 75/76 750F

[pjandrew99]

Thanks guys! Looks similar to the 77/78 cb750f. Will they bolt up to the K1 using the studs and clamps? If it interferes with the brake pedal that could be a deal breaker.
I think Delkevic is a great header. Trying to save a few bucks which usually cost me more. lol

[ekpent]

Header is worthless if you don't have the correct split collars and finned clamps and studs in the head. Would need to round up that stuff for starters if not included. Not sure on the fit, may depend on the muffler which you would need also. Best bet would be to find a cheap header that slips over your stock spigots if you still have them and secures with the stock clamps. K models 70-76.

[BomberMann650]

Is it just me or does the one pipe seem a little bent out of alignment.  Photo angle visual trickery?

Delkevic uses some nice materials.  Though their tube sizes and claims are suspect. 
Popular here so at least they get cb systems right.

[Don R]

  If the collector outlet is 2 1/2" it's f0 or f1, if it's closer to 2" it's F2,3 which does not hit the brake pivot, in my experience F0,1 does hit the brake pivot. 
  That collector looks like f2 to me. that's a 4-2-1 design and gives good ground clearance.

[pjandrew99]

Is it just me or does the one pipe seem a little bent out of alignment.  Photo angle visual trickery?

Delkevic uses some nice materials.  Though their tube sizes and claims are suspect. 
Popular here so at least they get cb systems right.

  I believe you are correct. One pipe is out of alignment. Hopefully I can bend it back.

  If the collector outlet is 2 1/2" it's f0 or f1, if it's closer to 2" it's F2,3 which does not hit the brake pivot, in my experience F0,1 does hit the brake pivot. 
  That collector looks like f2 to me. that's a 4-2-1 design and gives good ground clearance.

Yes its a 2 inch collector. Finally some good news! lol

I read somewhere that some guys intentionally buy the Delkevic F pipes for the K because they prefer the way its bolts on to the motor. If that is true and I can bend the one pipe back into place it may be worth keeping... All in all its in pretty decent shape. 

[PeWe]

I  accidentially ordered K7 4-1 to my K6 end of 1979. My bike is registered as a 1977 so that was the order back then.

I had to find  the later fittings to head and make brackets for passenger foot pegs. Looked OK.

The much newer Hindle 4-2-1 ordered 2017-18 has similar angle by design fitted into the stock frame hole.  Hindle has its own spigots to bolt into the head. Only stock gaskets needed.

It got frame mounted passenger foot pegs.

[BomberMann650]

Repairing that header might be a bit difficult.
Not that it can't be done.  Just has to sit properly on the head to seal.

[pjandrew99]

I  accidentially ordered K7 4-1 to my K6 end of 1979. My bike is registered as a 1977 so that was the order back then.

I had to find  the later fittings to head and make brackets for passenger foot pegs. Looked OK.

The much newer Hindle 4-2-1 ordered 2017-18 has similar angle by design fitted into the stock frame hole.  Hindle has its own spigots to bolt into the head. Only stock gaskets needed.

It got frame mounted passenger foot pegs.

That looks great!

Repairing that header might be a bit difficult.
Not that it can't be done.  Just has to sit properly on the head to seal.

That's what I'm afraid of. Mostly likely will give a shot.

[Tracksnblades1]

  If the collector outlet is 2 1/2" it's f0 or f1, if it's closer to 2" it's F2,3 which does not hit the brake pivot, in my experience F0,1 does hit the brake pivot. 
  That collector looks like f2 to me. that's a 4-2-1 design and gives good ground clearance.

+1

[madmtnmotors]

Repairing that header might be a bit difficult.
Not that it can't be done.  Just has to sit properly on the head to seal.

It could be that the #1 pipe rotated at the clamp to the collector. The #1 and #3 pipe clamp to the collector so I would loosen both of those when test fitting to the head.

[BomberMann650]

Repairing that header might be a bit difficult.
Not that it can't be done.  Just has to sit properly on the head to seal.

It could be that the #1 pipe rotated at the clamp to the collector. The #1 and #3 pipe clamp to the collector so I would loosen both of those when test fitting to the head.

Oh cool!  Had to squint to see the clamps on my tiny pocket screen.

So uh, yeah.  Nevermind.  I'll be off to the optometrist now.

[pjandrew99]

Repairing that header might be a bit difficult.
Not that it can't be done.  Just has to sit properly on the head to seal.

It could be that the #1 pipe rotated at the clamp to the collector. The #1 and #3 pipe clamp to the collector so I would loosen both of those when test fitting to the head.

I'm hoping that will do it. To me its looks like #2 is the issue and that has no clamp. I guess I really won't know until I start installing it. I'll be sure to loosen both clamps first.  Thanks