Author Topic: 1978 CB750K — Post 836 OIL PRESSURE - not good (Read 247857 times)

jaguar · « **Reply #150 on:** May 14, 2011, 11:27:09 AM »

they should thread out.
the "bolt" is welded to the ear and you just spin the reflector out

SKTP · « **Reply #151 on:** May 16, 2011, 04:29:34 PM »

Yep, that's what I figured...and have tried...

Anyone successfully remove crazy-rusted-on-the-inside marker reflectors?

They are soaking in PB-blaster as we speak

Syscrush · « **Reply #152 on:** May 16, 2011, 05:35:20 PM »

Quote from: SKTP on May 16, 2011, 04:29:34 PM

Yep, that's what I figured...and have tried...

Anyone successfully remove crazy-rusted-on-the-inside marker reflectors?

They are soaking in PB-blaster as we speak

If the marker is spinning on the bolt, then the pb-blaster won't make any difference.

Do you want/need to save the markers?

SKTP · « **Reply #153 on:** May 17, 2011, 12:55:43 PM »

Yeah, that's what I figured....Ideally yes, but If I need to track down another set...I guess that's what will happen...

SKTP · « **Reply #154 on:** May 23, 2011, 08:30:14 AM »

Hack-saw to the rescue!

I was able to hack-saw them off. The bolt was too rusty. Days of PBblaster had no effect. I hope to have them media blasted and powder coated black...then I will glue the reflectors back on...hope that they are not too rusty fir this plan

motocyconomad · « **Reply #155 on:** May 23, 2011, 10:22:00 AM »

better use one hell of a glue. If thats a long term thing.

SKTP · « **Reply #156 on:** May 23, 2011, 11:01:03 AM »

There are some pretty crazy industrial adhesives out there...I actually glued my speedo-drive to my hub for my dual-disk conversion and its still rock solid on there....

SKTP · « **Reply #157 on:** June 13, 2011, 12:31:52 PM »

Won't be using the standard ignition location nor the clocks...reshaping the top triple...turning out nice I think...might polish it all...maybe black paint, not sure yet...I think it might polish up really nice though

Master Cylinders : http://www.oppracing.com/category/1012-brembo-oe-oe-front-brake-master-cylinders/?page=3

Quote

'78K 750 - 4 into 1 MAC exhaust with pods
shimmed the needles 1mm and installed 135 mains.
Starts, idles and runs great!

— KeithB

CafeDawg · « **Reply #158 on:** June 13, 2011, 12:55:06 PM »

Got a set of Markers if you want them, let me know.
CD

SKTP · « **Reply #159 on:** June 20, 2011, 02:42:51 PM »

ready for powdercoat

climbingaz · « **Reply #160 on:** June 22, 2011, 10:29:54 AM »

Upper triple looks fantastic! What did you use to get it from the initial grinding to the smooth finish?

SKTP · « **Reply #161 on:** June 22, 2011, 01:45:22 PM »

Thanks!

I did the initial cuts with a drill and a hacksaw...then its all a metal file and then 400 grit sandpaper

bookmark PEtcock

There is hope for replacement of a K8 petcock if you don't want to take it apart, find gaskets, and tap for screws etc.

http://www.cb750supply.com/products/6/fuel-system/67/petcock-parts

climbingaz · « **Reply #162 on:** June 22, 2011, 09:48:18 PM »

Awesome, thanks! Took the grinder to my frame last weekend to grind off some tabs and the passenger peg brackets...now I need to clean it up.

Messenger750 · « **Reply #163 on:** July 11, 2011, 09:54:31 AM »

Great work I am enjoying reading this.

Any new updates?

SKTP · « **Reply #164 on:** August 15, 2011, 02:25:02 PM »

I'm going on vacation but I fully plan to get this thing to rolling chassis upon my return...getting organized, tool wise, and parts wise...paint and powder coat next month...

I made my self a pegboard over the weekend...polishing and prepping continue....If only I had more money!!!! :p

mark v · « **Reply #165 on:** September 27, 2011, 12:49:46 PM »

I have the exact same bike and plan on rebuilding it too. Your thread is going to help me a lot.

lucky · « **Reply #166 on:** September 28, 2011, 12:59:24 AM »

Quote from: KB02 on May 15, 2010, 04:48:53 AM

Quote from: SKTP on May 14, 2010, 11:27:56 AM
Shifter fork chunk?

That little piece looks more like a bit of piston ring than shifter fork.

The discoloration looks normal for a bike that has been ridden hard with a lack of oil changes. Most engine are not quite that dark on the inside. It looks like that sucker was run HOT. Not bad, per say, though.

As for the tab on the tach gear, yes, just bend that down. The tab is there to keep the bolt from backing itself out and dropping into the valve train.

To take off the head, you will need to take out the cam and cam towers. The valves and springs do not need to come out, but since you have it at that point, it wouldn't be that bad a time for an examination.

Piston rings pieces, not shifting forks pieces.

SKTP · « **Reply #167 on:** October 01, 2011, 04:31:35 PM »

I will be taking my swing arm in for powder coat soon. Do I need to remove these pivot things (see pics). How do you pop them out?

Cheffish · « **Reply #168 on:** October 01, 2011, 04:36:39 PM »

You're gonna want to take those out. They're plastic and could melt. You can remove them using two sockets and a threaded bolt I think. I saw it on this forum somewhere.

*found it. http://forums.sohc4.net/index.php?topic=84385.0

lucky · « **Reply #169 on:** October 01, 2011, 04:50:28 PM »

All of these photos that you posted show how most of these 33 year old motorcycles.
They all need a good going over from top to bottom.

There are some rust and electrical problems just waiting to bite the owner.

SKTP · « **Reply #170 on:** October 01, 2011, 05:18:39 PM »

Any tips on removing these steering race/seal rings also appreciated

Soaking in Simple Green...they are on there good!

Cheffish · « **Reply #171 on:** October 01, 2011, 05:36:50 PM »

That's pressed on. Simple green won't do it. See if you can find a thin pry bar to get under the dust seal. Give it a few taps around the perimeter and it should move. It helps if you have another set of hands to hold the trees down while you tap

MCRider · « **Reply #172 on:** October 01, 2011, 06:08:51 PM »

Heat it upside down for 2+ minutes with a propane torch and it will drop off. No force needed.

If you have the need to go medieval on it. break it into bits with a hammer and chisel.

SKTP · « **Reply #173 on:** October 01, 2011, 06:41:44 PM »

I'm beginning to think I should just go with paint on the triple clamps and swingarm?

Thoughts?

Cheffish · « **Reply #174 on:** October 01, 2011, 07:22:53 PM »

That's what I did. But if you upgrade to tapered bearings you're gonna need to get that race off the steerer tube anyway

News:

Author Topic: 1978 CB750K — Post 836 OIL PRESSURE - not good (Read 247857 times)