Author Topic: 1977 CB750k restore project (Read 34089 times)

edwardmorris · « **Reply #75 on:** February 13, 2015, 12:01:41 PM »

Airbox gasket is still available through Honda or ebay I think. I found them for the my early Ks at least, I'm sure there's some around for the later ones.

budman · « **Reply #76 on:** February 13, 2015, 12:20:30 PM »

Looking good.

calj737 · « **Reply #77 on:** February 13, 2015, 01:14:06 PM »

To polish the edges of the find after painting, use a dremeled or sanding block to scrape away the paint. Then green, red, then grey scotch brite pads. One direction for your sanding motion and don't press hard.

dgilling · « **Reply #78 on:** February 16, 2015, 08:40:17 AM »

I got the engine primered last night and hope to get it painted in the next day our so. It's pretty cold here so I might let the primer sit about a week before putting down the paint. i noticed a lot of guys will bake the engine parts in the oven. not really an option for me. I chose Dupi-color Engine enamel primer and paint. Getting the paint in between the fins can be really challenging. I'll upload some pictures tonight.

Calj, do you know of a video described the steps to get the fin offset look? seems scary to go sanding on paint that you just laid down. I might wuss out on that and just leave it black.

calj737 · « **Reply #79 on:** February 16, 2015, 09:58:13 AM »

Check out Heash's 350 build thread a few pages back. He describes in detail his steps. Many others have done it too. It's just paint, my Brother. While you wait for the primer to dry, test your technique in the il filter cover housing. It's small and to re-paint is easy

dgilling · « **Reply #80 on:** February 16, 2015, 11:10:35 AM »

il filter?

dgilling · « **Reply #81 on:** February 16, 2015, 11:19:51 AM »

also I can't find the build thread for Heash's 350. Is it under a different name maybe?... never mind.. found Harsh's thread.

So I've already put down primer, does that make a difference? I sanded them pretty good but I didn't polish them. Can you polish afterwards or is it easier to do before? I guess i'm not super clear on the paint removal process either. Seems like it would be easier to do wet but easy to screw up that way as well.

I also didn't clean near as well in between the fins as he did, partly because my motor is all together and harder to get to. I noticed spots the primer didn't want to stick to very well either. Oxidized spots. I'm not really sure if I should just keep going or try to sand and repaint again. I'm so tired of sanding

calj737 · « **Reply #82 on:** February 16, 2015, 11:43:54 AM »

*Oil filter

Harsh's build - page 4 or so
http://forums.sohc4.net/index.php?topic=137923.75

dgilling · « **Reply #83 on:** February 16, 2015, 10:07:14 PM »

Here's the motor on the motor stand my dad and I made. The Hondaman and I put it on at his house. This is also the state of the motor after I sanded and cleaned it for about three days. Tons of work to get in those little cracks.

I put the side covers on to see how they looked. I want to sand the "Honda" on the powdercoat, but I'm reluctant to do that as well. I'm a big wuss about this stuff. Afraid to screw something up.

I took some up close pictures after putting the primer down. the primer didn't get in between the fins very well, and my sanding/cleaning job in there could probably have been better. Should I Keep going or try to sand and clean again?

I practiced getting the shinny fin look on the primer. All I really did was hit it with 500grit and 800 grit sand paper and a red scotch brite pad. That'll do for me. Would it be better to do all the fins now and then re-do them after the paint or just wait till I get the paint down and then do them once?

calj737 · « **Reply #84 on:** February 17, 2015, 03:58:59 AM »

Sand the fins after the final paint job, it will be easier to keep the paint off them while spraying.

While the prep wasn't perfect before priming, at the end of the day, much of it wont show as the backside is covered by the carbs, and not many eyeball between the fins. Bikes tend to be admired from a few feet away, and the whole appearance of the bike will be beautiful.

Use a sanding block when you attack the fins to help avoid the paper from traveling in between the edges. It will make it much easier to control and you'll come out aces!

Restoration Fan · « **Reply #85 on:** February 17, 2015, 05:34:14 AM »

Quote from: calj737 on May 17, 2014, 10:31:25 PM

Not sure what makes it a "Super Lace" but extra spokes is not possible. Your hubs are drilled for exactly 40 spokes front and rear. Maybe there is extra labor they are charging with the removal of tires, bearings, etc... And then re installation?

Your kickstand mount does not look bent. They are oriented to the side like that. Perhaps the leg is bent or missing the rubber foot?

I was reviewing SOHRon's incredible build thread this morning. I was hoping his documentation skills might point out some flaws in our assembly strategy BEFORE we actually make them instead of afterwards, which is our customary pattern. I came across Ron's mention of Woody's SuperLace pattern in there and thought back to reading this thread many moons ago.

This thread explains that Woody's SuperLace pattern uses a Cross-3 instead of the Cross-2 pattern we normally use. They utilize heavy duty spokes so that they can make each spoke actually cross across three spokes instead of just the normal two.

I know Bill taught Logan how to do a Cross-2 pattern so that's what ours are laced with but I thought someone else might stumble across this later and here's the explanation. Mind you, I'm not agreeing that the extra cost they charge is justified but that's what their "Super Lace" is.

http://forums.sohc4.net/index.php?topic=86697.msg1047995#msg1047995

dgilling · « **Reply #86 on:** March 09, 2015, 01:43:24 PM »

It finally warmed up some around here and I got to put the paint down on the motor. I'm pretty happy with the color. It looks like it will go pretty good with the rest of the flat black on the bike. Those fins are pretty hard to paint.

I got some sanding done on the fins. I used a 320 grit on a block to help keep it flat on the fins. I'm really happy how things are coming out. I still have some touch up work to do before I call it done. I'm really happy with the polished valve cover and the small polished accents. I powder coated the shift cover and the alternator cover black so their going to appose a little but I think it will be okay. Especially with shinny new screws. I don't plan on doing all the fins since most of them are covered up with the carbs and exhaust.

I'm getting close to putting the motor back in the frame. Is there anything else that I want to complete with the motor outside the frame? I'll do all gaskets and bolts but I can't really see anything else from preventing me on putting it back in soon.

I ordered a new Carb Diaphragm. My old one was super rusted out. after installing it I put the little black boot (kind of looks like a fork boot but really tiny) back on and snugged it down like shown in the picture. Is that where it goes?

AintNoEasyWay · « **Reply #87 on:** March 09, 2015, 02:17:38 PM »

That engine looks nice! Not sure how I've been missing your updates.

dgilling · « **Reply #88 on:** March 09, 2015, 03:14:41 PM »

Quote from: AintNoEasyWay on March 09, 2015, 02:17:38 PM

That engine looks nice! Not sure how I've been missing your updates.

Probably because I'm really terrible at updated the post. I do them in huge chuncks

AintNoEasyWay · « **Reply #89 on:** March 10, 2015, 06:20:40 AM »

Did you paint over the bolts on the engine?

calj737 · « **Reply #90 on:** March 10, 2015, 06:29:29 AM »

Quote from: AintNoEasyWay on March 10, 2015, 06:20:40 AM

Did you paint over the bolts on the engine?

Looks like it

dgilling · « **Reply #91 on:** March 10, 2015, 07:26:12 AM »

I did paint over the bolts but I got a kit to replace most of them.

dgilling · « **Reply #92 on:** March 17, 2015, 09:48:42 AM »

I got the motor installed into the frame. I did a full post on here: http://forums.sohc4.net/index.php/topic,145987.0.html.

The install went really good and was super easy.

I'm still missing a bolt for the breather. AlloyBoltz sent the wrong set. It looks like the 77/78 went to a shorter bolt than the earlier models but AlloyBoltz sent out a new bolt right away.

Now that the motor is in is there a good order to go in for installing things? I don't want to install something if something else needs to go in first.

dgilling · « **Reply #93 on:** March 26, 2015, 04:39:17 PM »

My goal now that the motor is in, is to accomplish at least something once a day.

I got some baby steps done: I installed the foot pegs, but left them loose since I'm waiting on oil filter gaskets to come in. I also can't find the washers that go on the oil tank side with the oil lines. Is there anything special about those or are they just regular washers?

I installed the swing arm last night,
Got my new bolt in for the breather
Got the wheel retainers tight and almost have the wheels ready.

Last frame bracket installed.

the foot pegs were actually pretty tricky to remember how they went back together.

baby steps... installed the seat lock

Restoration Fan · « **Reply #94 on:** March 26, 2015, 06:25:48 PM »

The washers that go in the oil tank lines are just regular-styled washers on my 78.

dgilling · « **Reply #95 on:** March 26, 2015, 09:30:40 PM »

Quote from: Restoration Fan on March 26, 2015, 06:25:48 PM

The washers that go in the oil tank lines are just regular-styled washers on my 78.

Thanks Resto Fan, I'll go get some washers this weekend at the hardware store.

I painted my oil lines tonight with some VHT paint. I figured they're pretty much out of sight, they'll get dirty anyways, and they didn't leak so why not just keep running them till I have to replace them. at this point i'm just trying to save some coin and finish the project. I want my money to go where it's important like the shocks and the seat.

I also got my rear wheel together. So, do you have to install the chain ring cover and those pieces that go under the nuts? this obviously looks better but I'll still need washer to fill in the gaps. I figure a set of lock washers is really all you need.

calj737 · « **Reply #96 on:** March 27, 2015, 03:41:15 AM »

The locking tabs are better than lock washers. The tabs also wrap up to hold the bolt from spinning. I also encourage you to use blue LocTite on the threads. Don't want anything back there coming apart at speed

iron_worker · « **Reply #97 on:** March 27, 2015, 09:49:02 AM »

The washers in the oil lines on my K4 are aluminum crush washers. I don't think I'd use a regular washer there.

Hard to say from the pictures but I think yours probably should be too:

http://www.cmsnl.com/honda-cb750k7-four-usa_model14395/washer-plug-drain-14_9410914000/#.VRWJ4J3F91A

IW

dgilling · « **Reply #98 on:** March 29, 2015, 10:13:22 AM »

It's starting to look like a motorcycle! I need to get the tires mounted so I can set her on the ground but I like having things up high to work on.

So I'm looking at the Honda Schematic of the 750k7 and all it shows holding on the small sprocket is a 8MM washer with a 8x20MM bolt. Is that true? I'm going to get a new 8MM washer today the old one is installed.

I installed the new carb holders and used the old clamps. I replaced the bolts with a hex head bolt and had to file off the little tabs around the bolt head so I could tighten all the way. Everything feels pretty snug.

I installed the forks. It took me forever to find the lower mount bolts. Question, I'd like to lower the front a little. Can I just slide the fork up? seems like I can and can lower a good amount if i want. no interference up top. I just want it to have a slightly lower stance, nothing too crazy.

I installed my Honda Man swingarm. I used the old shocks for now because I haven't decided on a new set. Any suggestions around $200 or $250?

I got the battery box installed. I'm working on a modified fuse box like the one that hondaman sells. I plan to tackle electrical next. We have a bunch of cable stuff at work so I might try to do some other mods to the wire harness for a cleaner install.

It's hard not to get ahead of myself cause I get so excited for it to be back together.

brandEn · « **Reply #99 on:** March 29, 2015, 10:29:21 AM »

Everything is looking nice!

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Author Topic: 1977 CB750k restore project (Read 34089 times)