Carb Choke Plate screws - To Reuse (how) or Not?

cbx6ss · Post by **cbx6ss** » Sun May 21, 2006 9:03 am

After reassembling carbs after rebuilding;

I would be grateful for any thoughts on reusing the choke plate screws.

1. Will they be ok just reassembling?

2. Should I use something like locktite?

3. Do I need to use a rebuild set with the double folding washer?

Advice would be appreciated.

TIA

/r

Brad

cbx6ss · Post by **cbx6ss** » Tue May 23, 2006 5:52 am

(From CBX Motorcycle Forum)

When mounting the “butterflies???, make sure you mount them the right way.

They have a front and back side!

The edges are not square but tapered so they can turn freely and come to a fully closed position.

When mounted the wrong way around the will not be able to close completely.

The protruding ends of the original bolts were spliced to secure them.

They can be removed, but not used again.

I used new stainless steel m3 x 6 bolts and secured them with the blue Loctite locking fluid.

Shorty

cbx6ss · Post by **cbx6ss** » Wed Jun 07, 2006 9:54 pm

all,

I replaced the screws with 3m X 6mm allen head bolts from the local hobby shop for radio control cars. started er up tonight for the first time after a frame off recondition. one of the bigger thrills in my life to here a mighty X for the first time.

/r

Brad

Dave Ditner · Post by **Dave Ditner** » Sat Oct 21, 2006 1:56 am

Button head allens are also available. Use either one and give 'em a dab of blue loctite wen you put 'em together.

daves79x · Post by **daves79x** » Sat Oct 21, 2006 9:31 am

Dave:

I reuse the choke screws. They usually are still somewhat 'boogered' on the ends and thread in hard. The 'interference' fit of the threads is as good as locktite. Never had an issue with them.

Dave

retrex · Post by **retrex** » Sun Oct 22, 2006 5:58 pm

daves79x wrote:Dave:

I reuse the choke screws. They usually are still somewhat 'boogered' on the ends and thread in hard. The 'interference' fit of the threads is as good as locktite. Never had an issue with them.

Dave

Ditto this, if you are worried about them unscrewing then take a pair of long wire nose pliers and slightly bend over the straightened end of the v grooved screw end. One side of the plier on the screw head, one on the screw end and gently squeeze until the end deforms just a bit. It won't go anywhere after that.

alimey4u2 · Post by **alimey4u2** » Mon Oct 23, 2006 5:20 pm

On inspection, I am amazed how restrictive the butterfly setup is on these carbs. I remember how we used to reduce the cross section of spray bars in model aero engines induction tracts ( Dooling was my God.) I'm sure there are gains to be made there.........

I remember talking to George (CBXtacy) on the subject as he totally removed his choke butterfly's...

Segway to George........

Chris · Post by **Chris** » Mon Oct 23, 2006 5:49 pm

alimey4u2 wrote:On inspection, I am amazed how restrictive the butterfly setup is on these carbs. I remember how we used to reduce the cross section of spray bars in model aero engines induction tracts ( Dooling was my God.) I'm sure there are gains to be made there.........

I remember talking to George (CBXtacy) on the subject as he totally removed his choke butterfly's...

Segway to George........

I had thought that George had removed the choke butterflys from the bike I got from him. I was happy to see they were still there.

In Colorado, a choke is a must.

alimey4u2 · Post by **alimey4u2** » Mon Oct 23, 2006 5:53 pm

Chris, I think that was on a racing bike that George had, he having some other device for "choke" ?? I'm sure George will clear this for me (us) in due time......

Chris · Post by **Chris** » Mon Oct 23, 2006 6:06 pm

alimey4u2 wrote:Chris, I think that was on a racing bike that George had, he having some other device for "choke" ?? I'm sure George will clear this for me (us) in due time......

The bike I got from him is his ex-road racer. Its not very street friendly right now but it does have the choke.

George said in the past that removing the choke butterflys is worth a couple of horse power.

Like you said,

George will probably provide more details later. :)

cbxtacy · Post by **cbxtacy** » Mon Oct 23, 2006 10:20 pm

It was good for 5 hp. I'd pump the carb's a lot before startup and carry a can of ether.

IOWACBXER · Post by **IOWACBXER** » Wed Oct 25, 2006 8:29 pm

When removing the butterfly plates, did you also remove the rod that they attach to? If the rod is also removed, what did you seal the holes with?

Have toyed with the idea of removing the choke from my '81. Just before the C2C the choke cable came apart. While on the C2C it started without any problems. Just had to give it a few extra twists of the throttle before hitting the starter button.

BTW. Have been missing the C2C bunch since I spilt off from the group in Salida Co and can't wait for the 2007 Co rally!!!!!!!!!!!!!! (The sooner a date is set, the better my chances of making it.)

Chris · Post by **Chris** » Wed Oct 25, 2006 9:21 pm

IOWACBXER wrote:BTW. Have been missing the C2C bunch since I spilt off from the group in Salida Co and can't wait for the 2007 Co rally!!!!!!!!!!!!!! (The sooner a date is set, the better my chances of making it.)

IOWACBXER,

Looking forward to seeing you in Colorado!

We have a week in mind for the ride. Just need to get motels to commit. Judging by these very early responses, I may need to look for more rooms than I had initially thought. :)

Chris

cbxtacy · Post by **cbxtacy** » Wed Oct 25, 2006 9:29 pm

John, I removed the shafts and sealed the holes with JB Weld. I'll never do it again.

EMS · Post by **EMS** » Thu Oct 26, 2006 9:10 am

cbxtacy wrote:John, I removed the shafts and sealed the holes with JB Weld. I'll never do it again.

That reminds me of the story of the two farmers:

Farmer 1: John, what did you give to your horse when it was bloated?

Farmer 2: I gave it turpentine!

After a week the farmers meet again.

Farmer 1 : Hey John, remember you told me to give my horse turpentine against the bloat? It died after two days!

Farmer 2: So did mine!

The International CBX Owners Association

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