Author Topic: 1972 CB750 Four K2 -- Rebuilt to NEW OLD STOCK -- PIX ON PAGE 50 (Read 245197 times)

edwardmorris · « **Reply #1225 on:** July 03, 2015, 06:12:04 PM »

Quote from: Johnie on July 03, 2015, 05:59:13 AM

Raf you just set a pretty high standard there. Wow...I am speechless at the detail and bling. Every aspect of that bike just POPS out at you with those great pics. We can all see the detail and effort you put into this...now the big question...how does the wife like it? My hat is off to you man!!! Excellent...what is next?

Thanks Johnie! My wife has been very patient, she's an angel who doesn't nag me about my spending

Next is just fine tuning this thing as best as I can and keep riding it, hoping it will sell someday

The K3 build will be on hold for a while, next few months I'll be working my ass of to get her a newer car as she deserves better than the clunker from college we're still sharing

edwardmorris · « **Reply #1226 on:** July 03, 2015, 06:16:48 PM »

OK, back to the points and timing this thing. After struggling for a while I did get the dial gauge to hold steady using a magnetic base, the shaft was definitely bent a bit. Took a while but I got it to under 0.002" of runout, couldn't make it any better, I tried, but that wobble is pretty much gone now looking at it with the strobe light.

I still can't get the 2-3 to time right though, its still too advanced on that side. 1-4 lined up perfectly pretty easy, with a dewll reading of 23.3 steady, but even after fully retarding 2-3 the F mark doesn't line up and the dwell won't budge from 15.6. I tried points gap of 0.012" as well, no difference. Am I dealing with a bad plate here? Or still screwing something up?

HondaMan · « **Reply #1227 on:** July 03, 2015, 10:13:12 PM »

I might suggest this first: don't use a dwell meter when the timing can't be set. The reason: the gaps and baseplate position must be known in order to be able to try to sort out any geometry problems, and the dwellmeter masks all of this.

Here's what might be happening: the baseplate might be somewhat smaller than those edges that are supposed to hold it on the bike. See if you have "slop" when the 3 screws are loose. If so, try this: insert a shim in the bottom edge of the plate to shift it upward, then set the Points to 0.014" gap. Then adjust the plate to make the 1-4 "F" mark line up at idle, and see where this leaves the 2-3 subplate timing. In the case of the TEC points sets, they usually come right in once this is done.

The FEW and Daiichi baseplates are too small by almost 0.5mm diameter. This allows the whole system to shift timing on the 1-4 side by about 3 degrees: since the 2-3 side then must shift twice that much (6 degrees) to "catch up", and since the subplate only allows 5 total degrees adjustment, it becomes impossible to move the 2-3 set into time. The "fix" for the FEW plates is to center them with a shim or two in the edges of the baseplate at those supports: the Daiichi points themselves introduce another geometry problem that often can't be fixed at all on top of the baseplate issue. That's why I think we're lucky for still having the TEC units available today!

edwardmorris · « **Reply #1228 on:** July 05, 2015, 04:52:33 PM »

Thanks Mark, I've pretty much ruled out everything at this point, including the cam on the advancer being off by 180. Nothing was fixing the 2-3 idle. Before I decided to swap out the points plate, I said to myself, ONE LAST TRY. Took everything off, added some extra lube UNDER the points cam this time, set the gaps, set the static timing on 1-4, which like all tries before lined up perfectly! Then, moved on to 2-3 and by some miracle, I got timed statically!! Other than lubing the underside of the points cam, I don't recall doing anything different from before. Fired it up, hooked up the strobe light, 1-4 dead on and steady, 2-3 was a tad too advanced, BUT I had some room on the sub plate to correct that this time!! 2-3 now lined up dead on, and that "wobble" is pretty much non existent. Phew!! Took her out for a 10 mile ride, and the idle didn't go psycho btich on me

Cold idle was 900, after the 10 mile trip it was 1100-1200.

I had the energy to go longer but I returned home because when I pulled the plugs for doing the timing stuff, I noticed that 1,2 and 3 were carbon fouled (black velvelt like covering). This is new, since I didn't see this after my first ride (with only static timing). I'm guessing I'll have to move on to carburation next, fine tune that before any long trips. I don't want my pistons coated so early

RRRToolSolutions · « **Reply #1229 on:** July 06, 2015, 08:27:15 PM »

Rafi, I haven't seen the final photos posted in the last week until tonight - WOW! That is a beautiful bike. I'm really glad you did the Gold - it just fits the "Jewel" you've built yourself. This is the best CB750 I've ever seen....period.

I'm glad that I could help in the small ways I did, but I am most thankful for the friendship we've kindled over the last year.

Gordon

edwardmorris · « **Reply #1230 on:** July 07, 2015, 11:00:23 AM »

Thanks Gordon! The frame kit and the JIS tools were real life savers!

CB750faces.com (Lecram) · « **Reply #1231 on:** July 07, 2015, 11:51:18 AM »

Wow, this is sooo beautiful! Great, great job!

edwardmorris · « **Reply #1232 on:** July 07, 2015, 10:26:20 PM »

Thanks Marcel! Love your stuff for the gauges! Can't wait to share my K3 custom gauges that got all new everything from you as well

Elan · « **Reply #1233 on:** July 08, 2015, 10:58:52 AM »

Lookin awesome! Great job man!

02z06dave · « **Reply #1234 on:** July 08, 2015, 11:02:57 AM »

Wow!
the bike came out absolutely incredible. It makes me really want to do a restoration now, but it would probably never come out that nice. Beautiful, beautiful bike! You did a fantastic job

edwardmorris · « **Reply #1235 on:** July 08, 2015, 07:16:37 PM »

Thank you guys!

edwardmorris · « **Reply #1236 on:** July 10, 2015, 10:06:03 AM »

Just added some more pix that I'd forgotten earlier to the post on page 50 (Master Cyl, Gas Cap and Latch and a few others). Have nearly 60 miles on it, starts, idles and runs smoother after the timing got set correctly. Was hoping to vacuum sync the carbs this weekend but its supposed to be raining both days

Today is clear though, so will go riding after work while the sun is still up

edwardmorris · « **Reply #1237 on:** July 14, 2015, 11:23:47 AM »

Nice long 25 mile ride, getting more and more attached to it. Fasting ends this Friday, hopefully will be able to sync up the carbs this weekend then take it further out. Anyone in the area wanna come help

?

Its sharing the garage with my daily driver car, and its getting dirty after riding or when not ridden for a day. Any recommendation on a good cover for use when parked? Also, that long ride was on a hot day and the engine was burning up when I returned home. Should I leave it to cool off on its own or set up fans?

jerry h · « **Reply #1238 on:** July 14, 2015, 09:03:39 PM »

Hi Rafi,

I'd just leave the engine cool off naturally, no need to use fans. They do get hot though.

My method to keep the bike clean is by using Meguiar's detail spray and micro fiber clothes. The only thing that should touch your paint and chrome is microfiber cloth. It only takes a few minutes to spray and wipe off the dust. Get a good coat of a quality wax on the paint and chrome, (I like meguiars gold class carnuba wax), and clean up is no problem. I use a small piece of microfiber cloth as a wax applicator too, don't trust the foam one in the can. (Also don't dry the microfiber clothes in the dryer, it will ruin them)

I use an old bed sheet as a cover. Light, about the right size, and it won't scratch.

edwardmorris · « **Reply #1239 on:** July 16, 2015, 03:41:26 PM »

Thanks for the pointers Jerry! I'm using a bedsheet right now but it isn't quite big enough. I'd prefer a full bike cover, so still looking for recommendations

Here's a link to my build summary in the BOTM voting thread for those who'd like to get a shorter version of this thread

http://forums.sohc4.net/index.php/topic,149745.msg1708584.html#msg1708584

MCRider · « **Reply #1240 on:** July 16, 2015, 06:52:04 PM »

Quote from: edwardmorris on July 16, 2015, 03:41:26 PM

Thanks for the pointers Jerry! I'm using a bedsheet right now but it isn't quite big enough. I'd prefer a full bike cover, so still looking for recommendations

Here's a link to my build summary in the BOTM voting thread for those who'd like to get a shorter version of this thread

http://forums.sohc4.net/index.php/topic,149745.msg1708584.html#msg1708584

While I like sheets myself, I also have covers of various thickness that are more tailored fit. Take a look at WalMart's MC covers. Good value for an indoor cover. OK for outdoor too. I'll get some other names next time I'm in the shop.

SOHC4 Cafe Racer Fan · « **Reply #1241 on:** July 16, 2015, 08:06:31 PM »

Cycle Gear sells universal motorcycle covers pretty cheap -- for indoor, indoor/outdoor, etc.

oldhatt45 · « **Reply #1242 on:** July 17, 2015, 04:46:33 AM »

Rafi,

Just be careful that the cover you end up with does NOT trap moisture inside the cover.
Make sure that it is a cover that will breathe. Trapping moisture is and would be a definite BAD thing.

Charlie

evanphi · « **Reply #1243 on:** July 17, 2015, 10:11:22 AM »

I have a cover that has little grommets in the top that are covered by small flaps. Kind of like on a tent for camping. Allows air and moisture to escape out the top. I got it at WalFart I think...

edwardmorris · « **Reply #1244 on:** July 21, 2015, 04:16:31 PM »

Thanks for the suggestions guys, my wife found me a larger sheet that she could spare so I'm covered for the interim, I'll check out the suggestions above and find one to eventually use during winter.

Its been rain free for the past few days, so I've been logging miles as I find time. Was going to do the break in at 100, got lazy/tempted and kept riding ended up at 129 miles. Decided to do it at 150, lazy again, kept going now well past that. Someone please help me fight the temptation and tell me I MUST change it at 200

oldhatt45 · « **Reply #1245 on:** July 21, 2015, 05:00:36 PM »

OK, You MUST change it.................................NOW!

Charlie

edwardmorris · « **Reply #1246 on:** July 21, 2015, 06:16:24 PM »

Couldn't resist! I'll definitely change the oil and filter this weekend, might squeeze in a few more miles but won't push my luck.

I lack both skills and equipment to take proper pictures. A friend looking at LP's pix-> Bike is candy gold, then my cell phone pix-> Bike is $hit brown

oldhatt45 · « **Reply #1247 on:** July 21, 2015, 06:28:43 PM »

When you See all the shiny stuff in your Oil this weekend............
(Don't mess up that engine you worked so hard on!)

First Picture Nice
Second picture sucked
Third picture OK.
And the Bike Looks Gold in those Pics.

Always have the sun behind you. Never behind the object you are photographing.

Cloudy day better than sunny day.

Charlie

Stev-o · « **Reply #1248 on:** July 21, 2015, 06:32:59 PM »

Quote from: oldhatt45 on July 21, 2015, 06:28:43 PM

First Picture....too dark
Second picture sucked
Third picture OK, but taken in a park lot? C'mon man! Go to the park.

And the Bike Looks Gold in those Pics.

Always have the sun behind you.

Fixed that for ya, Charlie.

oldhatt45 · « **Reply #1249 on:** July 21, 2015, 06:37:29 PM »

ROFL!!!!!!!

Charlie

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Author Topic: 1972 CB750 Four K2 -- Rebuilt to NEW OLD STOCK -- PIX ON PAGE 50 (Read 245197 times)

02z06dave