Author Topic: K carbs on an A + A airbox??  (Read 1821 times)

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Offline nixon

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K carbs on an A + A airbox??
« on: December 22, 2018, 01:55:49 am »
Hi all..hoping someone can put me out of my misery.

I put some round top carbs on my A years ago.

I was using ram air filters over the rubber stacks.

Lately I've had a lot of trouble with the carbs,  though it has run pretty good.

I'd now like to use an airbox before trying again to tune carbs.. The K box will  not fit,  I tried.

No space with the torque converter to get under neath to do wing bolts.

So my question... is will an A airbox fit the k carb?rubbers same, enough space?



I won't bore you with details,  but I want
« Last Edit: December 22, 2018, 01:30:02 pm by nixon »
cb750a 77, cbr900rr 93 with auto clutch

Riding tip " turn in late, feeling great.  Turn in early,  feeling squirrely "

Offline dave the welder

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Re: K carbs on an A + A airbox??
« Reply #1 on: December 28, 2018, 05:10:57 am »
k airbox will fit butt is tight.you can swap the rubber boots from the k carbs into the a airbox .
don't buy it build it

Offline xntrik

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Re: K carbs on an A + A airbox??
« Reply #2 on: February 02, 2019, 03:09:34 pm »


K box is VERY doable. But yes, tight.

I’ve removed every pod/sock filter every previous owner has ever installed on any bike i bought.

They’re not worth the time and headache.


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Offline nixon

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Re: K carbs on an A + A airbox??
« Reply #3 on: February 08, 2019, 08:11:52 pm »
thanks guys!! I really really did try but i just couldnt see how and gave up!

Bumped up the idle jets to 42 and was running pretty good! 80 in low ( kmhr)
cb750a 77, cbr900rr 93 with auto clutch

Riding tip " turn in late, feeling great.  Turn in early,  feeling squirrely "

Offline vik351

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Re: K carbs on an A + A airbox??
« Reply #4 on: September 28, 2019, 05:36:40 am »
Hi all..hoping someone can put me out of my misery.

I put some round top carbs on my A years ago.

I was using ram air filters over the rubber stacks.

Lately I've had a lot of trouble with the carbs,  though it has run pretty good.

I'd now like to use an airbox before trying again to tune carbs.. The K box will  not fit,  I tried.

No space with the torque converter to get under neath to do wing bolts.

So my question... is will an A airbox fit the k carb?rubbers same, enough space?



I won't bore you with details,  but I want

HI, just got my A and was changing oil and air filters etc... BUT

The clown that owned mine did the air box bolts up that tight that the hex heads in the bottom section are spinning in the plastic...

So I had to remove the whole air box in one piece, Fun job but I went out the starter motor side, bit more room me thinks this way.

Next problem I have is to stop the bolt from spinning in the plastic, they are done up so tight that the bottom of the box is concave instead of flat as it should be...

Was gunna drill and tap the bolt head with an eazy out while trying to undo the other end with the 10 mm ringie...???

Even the oil filter nut was soo friggin tight hat to put an extender tube on the 10 mm spanner, crazy stuff, that has "O" rings...

As for the sump plug, 17mm ringie and hammer to crack that one... ::)

vik... my two bobs worth... 

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: K carbs on an A + A airbox??
« Reply #5 on: September 28, 2019, 08:49:36 am »
Jam the blade of a flat stubby screwdriver in one of the sides of the bolt head to hold it from turning
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline vik351

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Re: K carbs on an A + A airbox??
« Reply #6 on: September 29, 2019, 02:42:49 am »
Jam the blade of a flat stubby screwdriver in one of the sides of the bolt head to hold it from turning

First thing I tried, was a Californian bike, wonder if Arnie used to service it, was tight as to get away with trick, but the ezy out worked fine.

What critters live in that place ...??? found a nice little nest when I finally got it open





at least they moved out and just left an empty humpy...!!!

vik...

Offline tscott

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Re: K carbs on an A + A airbox??
« Reply #7 on: December 27, 2019, 08:09:32 am »
Sorry to resurrect this thread but am curious...
Are the A and K airboxes the same?  In other words, can someone swap out the A carbs for the K roundtops and still use the A airbox? It does seem like it would be nearly impossible as the K manifold boots are close to a half an inch longer than the A manifold boots. Also, are the airbox boots the same ID on each airbox? Or are they different?
Thanks,
Toran

Offline vik351

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Re: K carbs on an A + A airbox??
« Reply #8 on: December 27, 2019, 12:57:34 pm »
Sorry to resurrect this thread but am curious...
Are the A and K airboxes the same?  In other words, can someone swap out the A carbs for the K roundtops and still use the A airbox? It does seem like it would be nearly impossible as the K manifold boots are close to a half an inch longer than the A manifold boots. Also, are the airbox boots the same ID on each airbox? Or are they different?
Thanks,
Toran

been done by the looks ,but from what I have seen (bugger all) K and A boxes aint the same .

vik...