Author Topic: GnarlyCharlie4u's 1977 CB750K - Getting Very $erious. (Read 28724 times)

wannabridin · « **Reply #25 on:** March 03, 2011, 11:50:00 AM »

pictures just keep getting better. looks like someone is making the new camera work for them!

i like how the CB is getting the red carpet treatment!!

gnarlycharlie4u · « **Reply #26 on:** March 03, 2011, 11:52:49 AM »

Quote from: TipperT on March 03, 2011, 11:01:04 AM

Just don't pose on the red carpet for us!

lol fair enough. speaking of red carpet I wonder how my girlfriend is going to react to the amount of money I am potentially putting into this motor

Really? · « **Reply #27 on:** March 03, 2011, 12:22:59 PM »

In a kewl way, Nice!

gnarlycharlie4u · « **Reply #28 on:** March 03, 2011, 12:42:38 PM »

I know I'm posting things out of order but...

The valve in focus is the one that started this whole process. Notice the marred edged of the valve stem. It was struck by the rocker arm a few times after the screw had backed out.

Valve cover removed.

Top end removed.

gnarlycharlie4u · « **Reply #29 on:** March 03, 2011, 03:11:32 PM »

Alright so... since I have to have the cyl bored... I might as well go big.

I'm looking into putting together an 836 setup. Anyone have any opinions on any of the available kits?

At the moment I'm thinking the Ape kit looks pretty attractive but ideally I would really like a .360" lift with a longer duration (maybe 280º).

Of course all the necessary other upgrades will have to occur: bearings, cam chain, primary chain, ss valves and hd springs, etc...

I'm seriously considering having my head ported but I'm just not sure if I can afford it. I know it's the best bang for your buck but that's just a lotta bucks I gotta bang.

Really? · « **Reply #30 on:** March 03, 2011, 09:31:23 PM »

Was there not a cheap 836 kit available from somewhere in Asia I think. Terry has the info I am sure. He picked up a kit or two I think.

Old75_ratafe · « **Reply #31 on:** March 03, 2011, 09:42:00 PM »

So you have to bore it out and shave the heads huh.. Yep sounds like big bore kit and a little higher compression to me... add in a hot cam and you got a screamer not a dud.

gnarlycharlie4u · « **Reply #32 on:** March 04, 2011, 07:30:22 AM »

I've decided that my goal for this bike is something that I can drive every day and will drop jaws (and cover ears) everywhere it goes. But I'd also like to impress some people at the track occasionally.

So I just sat down and priced out a few things...

Besides the potentially lethal amount of money I'm about to spend on my head, I need...

836cc piston kit & cylinders bored out
hot cam
cam chain + tensioners and rollers
primary chains + primary chain tensioner
lightened and balanced crank
heavy duty rods (carrillos would be SOOOO nice)
heavy duty cylinder studs
clutch kit
gasket set
undercut, glass bead, and polish gear faces

and there’s more I’m probably forgetting…
OH and let’s not forget the all important mirrored Honda wings tattoo I’ll be getting on my back after all this is done, haha.

I've already ordered some K2 rocker arm shafts to replace my (perfectly fine) K7s now I'm wondering if I'll need new rocker arms too?

One last thing... I need someone with a steady hand to do some engraving on the motor... I'm going to grind off the 736cc and replace it with 836 when all is said and done.

rickmoore24 · « **Reply #33 on:** March 04, 2011, 09:07:27 AM »

Yes, great progress on the bike and nice bokeh on the 50mm, is it a F1.4 or 1.8? Nice to see someone into the old CB's and DSLRs too. I found it tough to not snatch up my camera and shoot as I worked, but the oil and grease dont mix well with the tech. LOL!

gnarlycharlie4u · « **Reply #34 on:** March 04, 2011, 10:07:36 AM »

Quote from: rickmoore24 on March 04, 2011, 09:07:27 AM

Yes, great progress on the bike and nice bokeh on the 50mm, is it a F1.4 or 1.8? Nice to see someone into the old CB's and DSLRs too. I found it tough to not snatch up my camera and shoot as I worked, but the oil and grease dont mix well with the tech. LOL!

AHHHHHHHHHHHHHH you said the magic word. (bokeh)

It's the 1.4 I'm sure. I do have the 1.8 though. Actually... I have a few lenses and I'm even getting rid of a few to help to afford this project.
http://washingtondc.craigslist.org/nva/pho/2246788714.html

It is hard not to touch the camera as I work. I wear surgical gloves when I touch anything for that very reason. I need a picture, I remove a glove.

ekpent · « **Reply #35 on:** March 04, 2011, 10:15:19 AM »

Here is a nice build page from member Sparty. Think you will like. http://home.comcast.net/~aentz626/site/

rickmoore24 · « **Reply #36 on:** March 04, 2011, 11:47:14 AM »

Man I loooved that 12-24mm on my D80, I sold mine too though as I didn't use it much and moved to a full frame rig. Very cool.

gnarlycharlie4u · « **Reply #37 on:** March 11, 2011, 02:48:38 PM »

updates.

So it looks like my dream motor is a little bit out of my price range at the moment.
Instead of half-assing it, I'm just going to set it aside and build it right when I have the money.

In the meantime I need a bike to ride, lucky for me I have this old basket case.

The plan is to pull the motor on this K2 and check it over. If it looks capable, then I'll throw it on the K7.
While I (hopefully) ride the K7 powered by the K2 motor, I'll be building the K2 project.

The K2 is going to require a lot of work all over to get it in running condition. It had been sitting for a couple years and doesn't look as if it's led the most comfortable life up till this point.

As you can see my garage is a disaster.
This is the result of working on multiple projects at the same time.

gnarlycharlie4u · « **Reply #38 on:** March 11, 2011, 02:53:58 PM »

Front wheel removed.

Oil drained.

Looks like the upper triple tree is trash.

Forks removed.

Forks from the K2 and other parts bike disassembled.

I'll be parting a TON of stuff out over the next few weeks. From both bikes and a 3rd parts bike I have, plus other parts I've amassed.
Check my thread if you need anything for your project.

brandEn · « **Reply #39 on:** March 11, 2011, 04:30:45 PM »

Quote from: gnarlycharlie4u on March 03, 2011, 11:52:49 AM

speaking of red carpet

got a good chuckle out of this....

anyway, I am digging all the pics and progress. Keep em coming. The bike pics I mean.

Free Booter · « **Reply #40 on:** March 11, 2011, 04:35:51 PM »

Quote from: gnarlycharlie4u on March 11, 2011, 02:53:58 PM

Looks like the upper triple tree is trash.

HOly Sh!1 wow...better to find out THIS way than on the road...

Excellent excuse to buy a new triple! Something awesome and aftermarket...for "safety"reasons of course. It must be justified somehow.

gnarlycharlie4u · « **Reply #41 on:** March 13, 2011, 12:05:02 AM »

yea... apparently the PO didn't realize there was supposed to be a spacer/washer in there between the two ends and just tightened down too hard. When I went to remove it that happened.

gnarlycharlie4u · « **Reply #42 on:** March 18, 2011, 10:55:45 PM »

just removed the forks on the 77 and drained them.

one drained fork oil that looked pretty decent.

the other drained ATF?!?!? o.0

bmw inspired i suppose. one for dampening, one for rebound haha.

MasterChief750 · « **Reply #43 on:** March 19, 2011, 05:55:16 PM »

Quote from: gnarlycharlie4u on March 18, 2011, 10:55:45 PM

just removed the forks on the 77 and drained them.

one drained fork oil that looked pretty decent.

the other drained ATF?!?!? o.0

bmw inspired i suppose. one for dampening, one for rebound haha.

the service manual calls for honda automatic transmission fluid, clymers says atf or 10w30 i believe

gnarlycharlie4u · « **Reply #44 on:** March 20, 2011, 12:52:16 PM »

Quote from: masterchief1112 on March 19, 2011, 05:55:16 PM

Quote from: gnarlycharlie4u on March 18, 2011, 10:55:45 PM
just removed the forks on the 77 and drained them.

one drained fork oil that looked pretty decent.

the other drained ATF?!?!? o.0

bmw inspired i suppose. one for dampening, one for rebound haha.
the service manual calls for honda automatic transmission fluid, clymers says atf or 10w30 i believe

yea i wouldn't be surprised to find one or the other... what got me was having BOTH. ATF in one and fork oil in the other haha.

gnarlycharlie4u · « **Reply #45 on:** March 20, 2011, 03:18:45 PM »

Just bought a bunch of paint stripper, phosporic acid, a respirator and a bunch of other fun stuff.

Today is teardown, next weekend is paint removal and disassembly of my buddy's xs650.

gnarlycharlie4u · « **Reply #46 on:** March 25, 2011, 05:11:45 AM »

well this is what impatience looks like:

http://forums.sohc4.net/index.php?topic=86174

I was hoping to remove the K2's motor to inspect it for usability but got this instead.
That's the spark advancer shaft and the threads snapped off WAY too easily.

KB02 · « **Reply #47 on:** March 25, 2011, 06:59:02 PM »

Quote from: gnarlycharlie4u on March 11, 2011, 02:53:58 PM

Looks like the upper triple tree is trash.

I have the triples off of my '78 that I have been looking to sell if you are interested.

gnarlycharlie4u · « **Reply #48 on:** March 27, 2011, 12:25:00 PM »

Quote from: KB02 on March 25, 2011, 06:59:02 PM

I have the triples off of my '78 that I have been looking to sell if you are interested.

At the moment I don't really need them. The forks are pretty much only useful for parts so I don't even have any sort of front suspension.
I'm not so worried about the K2 at the moment, and the K7 has a good front end.

I'm probably just going to sue the K2 as a template for fitting some modern front forks.
If I wind up messing that up and need some trees I'll let you know.

gnarlycharlie4u · « **Reply #49 on:** April 01, 2011, 09:50:19 AM »

well #$%*...

I cracked open the K2 yesterday.

Part of me wishes I hadn't.

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Author Topic: GnarlyCharlie4u's 1977 CB750K - Getting Very $erious. (Read 28724 times)