Fourth Gear - Mysterious acceleration problem

[alimey4u2]

Bill, It's not to difficult splitting the crankase, just pull the motor out & flip it over. No cylinder/headwork involved....

[silversurfer1050]

Hi LB,

I had this mental image of me taking apart a transmission and remembering why I didn't play basketball.

Soccer made sense - football made sense - almost all of the sports made sense to me. Basketball however was a mystery. They would talk about running plays. I saw ten guys running around in circles. Couldn't make anything stand out as a play.

I get pistons, valves, clutches even I think aren't too imposing. miscellaneous gears on a couple of shafts however intimidate me.

As it stands my dishwasher is currently yanked out from under the kitchen counter. I'm a little worried I would end up with a collection of parts to send to eBay.

I'm not ruling it out, just a little pensive. And it won't happen during summer in Wisconsin. We try to cram way too much living into two months.

[alimey4u2]

Take your time Bill, I know you have an active life with your priorities in the right order...

Tranny is not too difficult if you are systematic & take pictures during disassembly...We are here to help if need be....

[silversurfer1050]

Yeah, it's bugging me. It's very nice of all of you to help with advice an patience.

There are some parts on eBay right now. I should tasalk to Louis M first I suppose. I guess I shouldn't make hasty buying decisions.

Thanks,
Bill

[EMS]

No, you shouldn't. Also post your needs here. Some of us may be able to help you with parts.

[silversurfer1050]

A good friend has hooked me up with transmission parts. Now for the fun.

BTW - I've had an electrical gremlin for a while. When the bike got really wet, not just sprinkled on, it would flood out cylinders 1 and 6.

We got flooded down by Fond du Lac this weekend at the Midwest 1100F ride. It downpoured for 1/2 hour straight. Tree limbs laying in the road etc. Red was along.

The electrical went out again. Rode it back to the house and talked about it for a few minutes. First step I took the plugs out and dried them - put them back in. No luck - still not firing.

One of the guys, Pat, (with the odd Kaw) volunteered to clean them and took a couple millimeters off the end of the corroded plug wire. Dabbed in a little dielctric (non-conducting) grease and replaced everything. Still no luck.

Third try - Someone (Red?) Says; "Take off the tank." OK - I'm good at that. Done. Next thing I know there are about 5 guys working on my electrical system. Nick says something to the effect that he has found a crack in one of the coils. The one on the clutch lever side of te bike which by the way gives spark to plugs one and two. A coupe of the guys start describing how to dry out the coil and silicone it shut for a temporary fix. About that time Pete says why don't ou just take one off the shelf over there. Sure enough one from an old F - same part number molded into it. Popped that in.

Needless to say it started right up on all six. I had actually done this about two decades ago. I thought I was safe. Wrong. Next time I'll just start with the coil check.

Thanks Red and the rest of you.

[Rick Pope]

You say the left coil provides spark to cyl.s 1-2? Check again. It fires 1-6, just as your symptoms suggest.

Most of that era Hondas used that coil, and they are prone to cracking, especially on a CBX. In a dry environment, they can last a long time with cracks. However, you are blessed with plentiful rainfall in your neck of the woods, so cracks are bad.

Someday, you might think about replacement coils. Slightly easier starting and a little crisper running, but no great gains on a stock motor. Of course, that's just my opinion......

[EMS]

Agree with Rick. Aftermarket coils are an improvement. Either Accel or Dyna coils. The Kawasaki KZ1300 guys have lately come up with another coil. It is a "Nology". Supposed to be excellent. All of them are pricey, though.

[silversurfer1050]

Hi guys - I never completed getting the parts from my friend. Now I am looking on eBay.

Are there differences between 79's, 80's, and the prolinks as far as transmission parts, or are they interchangeable?

TIA
Bill

[EMS]

Very late '79 engines had some minor changes that carried over to the 80s. Then again, a few changes mainly in the primary shaft area to the Prolinks. What actualy do you need?

[silversurfer1050]

I belive it is the shift fork that engages forth gear is bent. I think I need that part. There are a couple sets on eBay right now.

[silversurfer1050]

I have ordered parts. It was explained to me that the dogs that engage the gear to the rotating shaft get the ends of the fingers rounded off. First the fork bends when it is forced into gear. Then the fork doesn't push the dog in far enough eventually rounding off the fingers.

I ordered forks and primary and counter shaft separately. I think I'm still under $80 for parts including shipping.

Somebody sniped the first transmission away from me in the last 30 seconds. They got it for $11 not including shipping. I should know better to bid the full price I think it is worth right away.

Anyway, here goes.

[Jeff Bennetts]

I saw your post on the other board, make damn sure those used shift forks aren't bent.

[silversurfer1050]

I'm considering the same thing. Why put in messed up parts.

A friend says I should consider using APE company to get the dogs back match beveled 4 degrees so they catch and pull into the gears.

[alimey4u2]

Having your tranny undercut is an excellent mod Bill. Well worth it if the bucks allow...