Topic: 1978 CB750K — Post 836 OIL PRESSURE - Hopefully Good!?

[Vinhead1957]

I would deflate. It fully spray a little silicon lube around the rim and then re-inflate

[Freaky1]

If you mean the bead is not seated, a little off the rim yea, spray it and re inflate. If that doesn't work, deflate a bit and smack the tread with a rubber mallet, don't swing for the fences or let all the air out either.

[SKTP]

It's like the rubber "pin-stripe" that should be all evenly away from the rim has been swallowed up by the rim presumably where it had been sitting...if that makes sense?

[SKTP]

Wow that was harder than I thought but the rear brake is back on and working. Is it even possible to get the spindle part on without removing the cotter pin? My bike definitely was dropped on its right side by the PO. The right foot peg and the brake spindle parts are slightly bent. Had to rubber mallet the spindle its slightly bent and tough to get through the hole...anyways wow that took some time. None of the manuals have good pics or info on how the entire drum brake lever assembly goes together...What a hot Valentine's day

[SKTP]

New hitch pins. Did not accomplish much today

[racinchase]

Man that thing is looking good!

[SKTP]

First test fit of the triple A pipes.

This is a 78k. Am I going to have to grind down that first lip?

The "half moon" should press into the header tube? Between the slotted outer and the smaller inner?

[seanbarney41]

I think those aaa pipes are designed for the ko-k6 style exhaust spigots...you need to get the exhaust spigots from k0-k6, they are just like a short little pipe(1-1/2 to 2" or so?) that screws to the head where your studs are, then your aaa headers slip over the spigot and clamp on.  Wish I had pics for you, hopefully someone will be along shortly with some.

[Dream750]

I’m with Seanbarney41 as you need the earlier K0 to K6 exhaust spigots & mounting hardware, then it’s a bolt-on affair. Those are cool pipes! 

Double click on pics for larger view:

[madmtnmotors]

Yeah, I like those pipes too. Would be worth the effort (for me at least) to switch to the earlier spigot connectors. Those pipes are wicked cool... 

[SKTP]

Thanks. So for sure the earlier spigots are straight bolt on?

The heads are the same? Who's selling a set? 

[madmtnmotors]

I'm PRETTY SURE the spigots will bolt up. I've got some spigots I can bolt up to a K8 head just to be sure. The studs would be removed and replaced with countersunk head machine bolts. I'll test fit tomorrow and report back, unless someone else can chime in here that has already done it. I've got a set of drag pipes earmarked for a future build that will require the spigot connectors as well.

[754]

Man where did you find that pipe ?

[SKTP]

Thank you very much. I pray that it's just a straight bolt-on deal.

If I have to remove the studs I will cry.

Eagerly awaiting your findings and thank you again.

[754]

 You have to remove the studs, just double nut them, when they start to move, like 1/4 turn , wiggle back and forth...easier on the threads. Easy job to change to spigots,,
 Those pipes make me drool..

[madmtnmotors]

If I have to remove the studs I will cry.

All of the exhaust studs I've encountered were painless to remove. I use the exhaust nuts, doubled up (flange to flange) and twist'em right out. Maybe I've just been lucky? In fact, my latest project (78 CB750F) had to remove the engine four times(!) chasing oil leaks and I removed the exhaust studs for cyls 1 through 3 each time to help avoid gouging the paint off the frame.

[SKTP]

I was really hoping to not remove the engine again...but yes, I have to do it right. Will I need a pro to put the counter sunk nuts in?

[madmtnmotors]

No,no,no,no. The spigot flanges have countersunk holes. The engine does NOT have to be removed. The engine removal reference was to illustrate the ease with which the exhaust studs could be removed. Engine removal from the frame not necessary to convert to spigots.

[754]

 I would trade a near minty Mac chrome pipe with the right mounts for that one..

[SKTP]

Thank you Madmtnmotors. Can't wait to see what you discover tomorrow. I have found the parts on eBay and am ready to throw down. I want this bike finished and I just gave the stock exhaust away to Ricky Racer. I'm greeting these pipes on this bike.

754, thanks for the offer but I waited almost three years to find these babies...found on eBay. But thank you for the offer. Do you have a set of spigots and or flanges for sale?

[754]

Yeah i got spigots but be cheaper to buy in your country.. If you cant find let me know..

[SKTP]

So I'd just remove the studs and the old style screws would just screw right in?

[seanbarney41]

Without having these parts immediately available to touch and see, at the moment, I can think of ways to use the spigots with your exhaust studs...but it would probably be more hassle than just changing 'em out for the stock screws.  `The clamps would be the biggest tangle, I think.  Oh yeah...don't forget you are gonna need clamps.

[MCRider]

So I'd just remove the studs and the old style screws would just screw right in?

They should. A few of the studs will be difficult to remove as the frame rails interfere with the swing of the wrench. But you should be OK.

Dig out any old gasket material and fit new gaskets before install of the spigots.

[Stev-o]

Here are the spigots you need and countersunk socket screws will be needed too. That's a fantastic exhaust and worth the extra work needed to mount it correctly.
You might find these cheaper, start a wanted thread in the parts section.


http://www.ebay.com/itm/honda-cb750-cb750k-four-exhaust-pipe-flanges-spigot-1970-69-71-72-1971-73-74-75-/370732088518?pt=Motorcycles_Parts_Accessories&hash=item56515abcc6&vxp=mtr