Author Topic: 1978 CB750K — Post 836 OIL PRESSURE - not good (Read 248157 times)

MCRider · « **Reply #275 on:** January 16, 2013, 08:04:04 AM »

Quote from: SKTP on January 16, 2013, 08:00:39 AM

Triple A pipes acquired

Nice Score! As you can see the bike in my Avatar had them. Built in 1972. Got a lot of looks with those pipes. Really like the longer megaphone, seexy. There was a shorter one available also. I knew there had to be at least one more set in the world, and you got them. (well some other forum members have them too) Have they ever been mounted?

MCRider · « **Reply #276 on:** January 16, 2013, 08:04:55 AM »

Oh yeah, make that bed, what would your Mother say?

SKTP · « **Reply #277 on:** January 17, 2013, 10:51:53 AM »

I think they have been mounted? They are very, very clean though...slight rust on the inside and a dent on the first curve of pipe #2

Any tips on making old pipes last even longer? Should I attempt to know out the dent or is that just a chrome flaking nightmare?

Do you know if these pipes are very loud? I'm guessing they are not...but I guess I'll find out soon enough

SKTP · « **Reply #278 on:** January 21, 2013, 05:12:20 PM »

This again....

SKTP · « **Reply #279 on:** January 26, 2013, 11:36:38 PM »

Air box rebuild, mounting brackets painted, internal rubber replaced

All chains in place. I three bonded it and had the cases together. Ended up breaking a bolt off due to mental fatigue and a torque wrench and judgement error. Luckily, extracted the broken piece, will try again tomorrow.

SKTP · « **Reply #280 on:** January 27, 2013, 07:19:04 PM »

Took all weekend but the engine is together up to the cam towers!

Question: what are the green rubbers from the cycle-x kit?

brandEn · « **Reply #281 on:** January 27, 2013, 07:21:42 PM »

Those are valve seals

SKTP · « **Reply #282 on:** January 27, 2013, 07:27:04 PM »

Thank you. That makes sense. I did not do a valve job due to lack of funds and the bike ran awesome other thank the tranny died and has now been swapped out. I hope that it still runs great. If I ever get a raise I'll rebuild the head.

madmtnmotors · « **Reply #283 on:** January 28, 2013, 05:36:49 AM »

You can replace the valve seals witout removing the head. Of course you would have to remove the valve cover again...

SKTP · « **Reply #284 on:** January 28, 2013, 07:14:24 AM »

Thanks! I'll get reading about it....right now, the cam cover is just sitting on there and the cam towers are not bolted down...

SKTP · « **Reply #285 on:** February 03, 2013, 04:22:03 PM »

Ok! The cam towers and can are in and the timing mark is set to TDC.

Questions:

- how hard was your rebuilt engine to turn via the alternator. Mine is smooth feeling but does require some effort. That being said, one handed effort.

- doing the lay down on the side method to put the engine in the frame, can you do it with the wheels on? Or is that asking for trouble? Also how did you protect the tiny "screw" spindle sticking out for the points?

Getting closer! Would have had way more accomplished today had I label the cam-gear bolts and bagged them separately. For some reason I threw them in with the spark plugs and took the better part of the day searching fir them

SKTP · « **Reply #286 on:** February 04, 2013, 01:54:24 PM »

Excellent engine in to frame thread

http://forums.sohc4.net/index.php?topic=15321.0

mrrch · « **Reply #287 on:** February 07, 2013, 12:50:18 PM »

It takes a little effort (lots of things turning)
I propped my engine up with blocks so nothing was touching the ground then dropped the bare frame down onto the engine.

Tintop · « **Reply #288 on:** February 07, 2013, 04:17:25 PM »

Quote from: mrrch on February 07, 2013, 12:50:18 PM

It takes a little effort (lots of things turning)
I propped my engine up with blocks so nothing was touching the ground then dropped the bare frame down onto the engine.

+1.....that's the easiest way.

SKTP · « **Reply #289 on:** February 07, 2013, 04:25:47 PM »

Thanks guys. I'm rebuilding my pump, putting in the starter and sealing up the can cover then dropping on the frame this weekend if all goes well

SKTP · « **Reply #290 on:** February 10, 2013, 08:47:55 PM »

Putting the engine in is definitely easier than taking it out.

Two people and two milk crates. Not too bad at all. Even had a visit from Ricky Racer today!

iron_worker · « **Reply #291 on:** February 11, 2013, 09:09:00 AM »

That's a big step. I'm hoping to be there soon too!

Bike is starting to come together.

IW

SKTP · « **Reply #292 on:** February 11, 2013, 11:18:55 PM »

racinchase · « **Reply #293 on:** February 12, 2013, 07:08:49 AM »

Looking great!

Hondajohn88 · « **Reply #294 on:** February 12, 2013, 09:52:58 AM »

GREAT THREAD!
Just started on a couple of old bikes of mine 77 and 78 750k's and this will help ,as it.s been a while!
One thing.......am I just old school as I just took out the frame bolts and airbox, chain and other incidentals grabbed a hold of each side and pulled the engine out onto a wooden block.........should it have been harder?
kkkk

RAFster122s · « **Reply #295 on:** February 12, 2013, 10:08:15 AM »

Could you explain a bit how you made the new bezel for the speedo? Or point me to some sites that cover it?
Thanks!
David

SKTP · « **Reply #296 on:** February 12, 2013, 12:07:18 PM »

Lessons learned so far:

- do not try to put the entire front end together, then try to put the triple on (the whole deal into the headset, if that makes sense). That will result in you dropping the forks and triple-trees and then freak out and then realize how lucky you are that nothing got scratched or dented miraculously

- go slow. Read and re-read everything. Look at the schematics. I forgot a part on nearly every step and had to tear-back and rebuild. I feel like I have assembled two bikes

As for the bezel; the trick there is have a friend that use to work at Foose and now another cutting edge shop that is extremely nice and offers to make you one...its acrylic and looks great. I have never seen a non-dented one until this one

Now, I just need to figure out what the next step is....

Freaky1 · « **Reply #297 on:** February 12, 2013, 02:04:20 PM »

Quote from: SKTP on February 12, 2013, 12:07:18 PM

Now, I just need to figure out what the next step is....

Spend many an hour staring at my bike wondering the same thing, I hate to put something together only to have to take it off again because I should have put "that" on first.

Syscrush · « **Reply #298 on:** February 12, 2013, 02:14:06 PM »

Quote from: SKTP on February 12, 2013, 12:07:18 PM

- do not try to put the entire front end together, then try to put the triple on (the whole deal into the headset, if that makes sense). That will result in you dropping the forks and triple-trees and then freak out and then realize how lucky you are that nothing got scratched or dented miraculously

It may also result in stuff being out of alignment. I do it like:

1. Triples (hand tight)
2. Forks (snug enough to stay in place)
3. Fender (hand tight)
4. Wheel/axle (hand tight)
5. Calipers (hand tight)
6. Torque wheel
7. Torque fender
8. Torque forks
9. Torque triples
10. Torque calipers

I think. I probably have a dumb mistake in there.

SKTP · « **Reply #299 on:** February 12, 2013, 02:28:39 PM »

Here's a question:

So I left my wheels just sitting for about 2 years. Not the smartest move ever. The front appears to be fine but the rear has gone all off center and when I re-inflated it, it looks like part of the bead went in much to far and the tire is off-center on the rime at one part in particular.

Did I ruin the tire or can it be deflated and then re-centered properly?

News:

Author Topic: 1978 CB750K — Post 836 OIL PRESSURE - not good (Read 248157 times)