Author Topic: CB750K0 restoration project (Read 46939 times)

dangerdan408 · « **Reply #125 on:** September 10, 2012, 06:01:14 PM »

Quote from: CycleRanger on September 10, 2012, 05:00:20 PM

Quote from: dangerdan408 on September 10, 2012, 04:32:21 PM

I think it's fully seated, it just doesn't look like it with than cover nut off...

Yeah, that looks like the bearings might not be fully seated. The triple tree will sit a bit higher with the tapered bearings but that doesn't look quite right to me. You left the cover nut off?

It was an accident, I forgot about the cover nut, it will be going on there, but im going to try and make a long threaded stud that I can use to put some nuts and washers on to draw the other race in with when I get some time, i might get lucky and can get the threaded nut to pull it all together, but I'm not getting my hopes up.

CycleRanger · « **Reply #126 on:** September 10, 2012, 06:05:37 PM »

It will sit higher, yeah you need that nut. On the underside of the nut I have ground a little metal off where the tin cover is pressed on to get another 1/16 inch of clearance so you can thread it on over the dust seal.
Kinda hard to describe without photos I know. The top triple is still going to be about 1/4 higher than original.
There's going to be a corresponding gap at the top of the fork ears.
I used rubber 1.5 inch sink drain gaskets to fill the gap. It's pretty much invisible. Here's a photo.

Tews19 · « **Reply #127 on:** September 10, 2012, 07:40:57 PM »

Did you remove the bottom race on the stem itself??? Another thing i found out with one of my K1s is that you may have the wrong steering stem..... Let me find the thread I made on this... Mine sat that high as the top bearing would not seat itself in the proper position due to the stem being to thick in the middle....

Here is the thread.......
http://forums.sohc4.net/index.php?topic=109951.msg1232362#msg1232362

The actual lower part is hard to find.... One on ebay right now for 140 bucks

dangerdan408 · « **Reply #128 on:** September 11, 2012, 04:19:18 PM »

Got a little done today, got the steering stem all balls kit sorted out, it looks like its not seated but it is, I compared the distance on my dad's untouched original K6 and the distance looks the same. Got the wheels on with replated hardware, wiring harness roughly set in place, battery box snugged down, lots of little odds and ends.

With the collar snugged up and in place, the distance appears the same.

Rear sprocket on

It's finally a rolling chassis again!

And where I quit for the day.

fastbroshi · « **Reply #129 on:** September 11, 2012, 04:25:19 PM »

Have you thought about engine installation? It's much easier on the frame's finish and your back to lay the engine on it's side and drop the frame down over it. Much more difficult to do with the suspension installed.

Tews19 · « **Reply #130 on:** September 11, 2012, 05:06:25 PM »

Looks better, but I am not sure if it is suppossed to be that high still. Well, one way to find out is when oyu take her for a ride... If you have to much shimmy in the front end, possible reason is the triple is seated to high...... Other then that looks great

Stev-o · « **Reply #131 on:** September 11, 2012, 05:30:01 PM »

Quote from: fastbroshi on September 11, 2012, 04:25:19 PM

Have you thought about engine installation? It's much easier on the frame's finish and your back to lay the engine on it's side and drop the frame down over it. Much more difficult to do with the suspension installed.

Was just thinking the same thing.

dangerdan408 · « **Reply #132 on:** September 11, 2012, 06:21:23 PM »

Quote from: fastbroshi on September 11, 2012, 04:25:19 PM

Have you thought about engine installation? It's much easier on the frame's finish and your back to lay the engine on it's side and drop the frame down over it. Much more difficult to do with the suspension installed.

It's only temporary to keep all the stuff in one place (believe it or not, it's saving me a good bit of space in the garage), I'm going to pull the swingarm and shocks, then lower it all over the engine...Correct me if im wrong but, you lay the engine over on the right side then lower the frame over it and then bolt everything up, and finally pick it up right?

Prospect · « **Reply #133 on:** September 11, 2012, 06:56:59 PM »

Quote from: dangerdan408 on September 11, 2012, 06:21:23 PM

Quote from: fastbroshi on September 11, 2012, 04:25:19 PM
Have you thought about engine installation? It's much easier on the frame's finish and your back to lay the engine on it's side and drop the frame down over it. Much more difficult to do with the suspension installed.

It's only temporary to keep all the stuff in one place (believe it or not, it's saving me a good bit of space in the garage), I'm going to pull the swingarm and shocks, then lower it all over the engine...Correct me if im wrong but, you lay the engine over on the right side then lower the frame over it and then bolt everything up, and finally pick it up right?

That is correct. Prop the engine with blocks of wood to steady it and protect the points cover.

Stev-o · « **Reply #134 on:** September 11, 2012, 07:20:46 PM »

Use an old beat up points cover if you have one.

Garystratos201 · « **Reply #135 on:** September 11, 2012, 07:34:07 PM »

Quote from: Tews19 on September 11, 2012, 05:06:25 PM

Looks better, but I am not sure if it is suppossed to be that high still. Well, one way to find out is when oyu take her for a ride... If you have to much shimmy in the front end, possible reason is the triple is seated to high...... Other then that looks great

I think with the weight of the engine the height will be fine.....Gary

dangerdan408 · « **Reply #136 on:** September 14, 2012, 10:04:37 PM »

It's been a really busy day as far as school, business, etc has been concerned, but I still managed to get a little done.

-Got in contact with Marbles Motors, all has been painted, stripes go on next week, then final clear and back to me. Was able to square up what I owed with what was in my PayPal account and $300 out of my checking account...very happy about that.

-Got ahold of my uncle who had a new in the box 836cc wiseco kit he wasn't going to use and sold it to me for $160. I'll use it on build #2, might do something a little wilder than a stock resto this next time.

-Ordered a new tensioner kit from vintagecb750.com and I'm hoping it'll be here this Saturday. It'd be nice to work the engine over and get it back in the frame in a day.

-Still need to build the front caliper, REALLY hope the piston is good...have to go washer and dryer shopping very soon and don't need more expenses.

fastbroshi · « **Reply #137 on:** September 15, 2012, 03:19:00 AM »

Quote from: dangerdan408 on September 11, 2012, 06:21:23 PM

It's only temporary to keep all the stuff in one place (believe it or not, it's saving me a good bit of space in the garage), I'm going to pull the swingarm and shocks, then lower it all over the engine...Correct me if im wrong but, you lay the engine over on the right side then lower the frame over it and then bolt everything up, and finally pick it up right?

I can't say for sure, as I haven't had a 750 yet, maybe next time. Its just a tidbit I've seen on the board here. I also seem to remember something about one of the engine mounts' lugs on the frame could provide a challenge and need grinding down. I'll defer to the K0 experts on that subject.

Garystratos201 · « **Reply #138 on:** September 15, 2012, 08:10:07 AM »

Man its looking great. I know what you mean about expenses. Every time I turn around its another hundered dollars here 2 hundred dollars there. I found out yesterday when i was honing my cylinder that some of the pitting that I thought would hone out but just my luck it wont. So I`m off today to the machine shop. Good luck with your build.......Gary

dangerdan408 · « **Reply #139 on:** September 15, 2012, 02:08:39 PM »

Quote from: Garystratos201 on September 15, 2012, 08:10:07 AM

Man its looking great. I know what you mean about expenses. Every time I turn around its another hundered dollars here 2 hundred dollars there. I found out yesterday when i was honing my cylinder that some of the pitting that I thought would hone out but just my luck it wont. So I`m off today to the machine shop. Good luck with your build.......Gary

I just feel like there's either a black hole in my wallet sometimes...everything hits me all at one time it seems. I hope you can get all that machine work done cheap. Im gonna start getting all the stuff together for my next build here soon...more $ wil be required...sigh...

dangerdan408 · « **Reply #140 on:** September 15, 2012, 02:38:54 PM »

Pics, sorry photobucket wasn't working until today for me.

dangerdan408 · « **Reply #141 on:** September 17, 2012, 01:06:12 PM »

Well, I finally dug in last night and started working on the engine...it's actually in pretty good shape. Noticed the little 10mm bolts down in the fins were loose enough to come out by lightly turning the socket and extension...incredibly loose. Still awaiting the tensioner parts from vintagecb750.com, ordered on the 12th and it's still not here. Got word my bodywork will ship late this week or the start of the week of the 24th.

A little grimy looking, but somewhat clean really.

About 2mm of carbon buildup on the piston crowns.

Tensioner wheel has definitely seen better days...

Garystratos201 · « **Reply #142 on:** September 17, 2012, 01:43:38 PM »

I suggest you call and make sure Vintage has shipped your parts . I ordered from them and had tom call twice before they actually shipped..........Gary

dangerdan408 · « **Reply #143 on:** September 17, 2012, 01:48:44 PM »

Quote from: Garystratos201 on September 17, 2012, 01:43:38 PM

I suggest you call and make sure Vintage has shipped your parts . I ordered from them and had tom call twice before they actually shipped..........Gary

Yeah, if there's a mix up and it hasn't shipped yet, this will put me behind schedule a little bit. I'll call them early tomorrow morning, and in the meantime find a contact number. I needed those parts yesterday, but they can only get here so fast. Thanks for the heads up on them.

dangerdan408 · « **Reply #144 on:** September 18, 2012, 08:26:44 PM »

Tensioner and parts came in, so I ended up cleaning and repainting the engine. Went through 3 cans of brake parts cleaner, made no headway, so I got the industrial degreaser and pressure washer out and knocked off several years of caked on oil...original owner told me he rode it for years with it like that.

Pressure washed stuff:

Resprays...still need to get excess paint off.

A little more detail work and I'll be ready to start reassembling the top end.

dangerdan408 · « **Reply #145 on:** September 22, 2012, 08:34:56 PM »

Got a little further on the engine tonight, found out the head has been off before, or it never had the o-rings from the factory...it didn't have any of the o-rings around the base of the cylinder. It took me and my dad on opposite ends of the cylinder working at the same time three hours to get the cursed base gasket off...it felt chemically welded on there. But I set everything right I found wrong and got the top end torqued down and will let it sit over night to retorque in the morning.

I got word that my bodywork will ship out the start of this upcoming week, still need to get the lower trim for the tank, but can't find any.

See? No o-rings.

Finally got the last cover done.(it was hard to photo)

Cylinder on

Head torqued, cover slipped on to keep junk out

More updates tomorrow!

Garystratos201 · « **Reply #146 on:** September 22, 2012, 09:26:51 PM »

Man :)looking good.....Gary

Viktor.J · « **Reply #147 on:** September 23, 2012, 04:39:27 AM »

Looking nice !

Great job with the engine finish, looking forward to see the "last assmeblys" come together !!

Stev-o · « **Reply #148 on:** September 23, 2012, 05:48:39 AM »

David Silver Spares sells the fuel tank trim...

http://www.davidsilverspares.co.uk/parts/by-part-number/partnumber_12370/

dangerdan408 · « **Reply #149 on:** September 23, 2012, 04:07:22 PM »

I ended up finishing off the engine today and got it in the frame...doesn't sound like too terribly much, but even just that is a chore.

Right before valve cover goes on for the last time.

Engine in!

I still need a ton of little parts to get this done, and just realized that my plater lost some of my hardware...yeah, the big #8 engine bolts up front...so off to find replacements...but all in all a good day, getting closer to riding it.

News:

Author Topic: CB750K0 restoration project (Read 46939 times)