Author Topic: I've been K0'd! (Read 145335 times)

jaguar · « **Reply #50 on:** December 07, 2011, 09:52:27 AM »

that really sucks about the coater....

Good looking bike.
im a sucker for lesters....

Don R · « **Reply #51 on:** December 10, 2011, 08:23:07 PM »

Yeah. Oh well, now I get a pretty new tag. I wet sanded the top triple tree, it has one flaw but looks like it will buff out OK. I did rub through on a corner but it's behind the gauge.
My bolts all look shabby now. I need to order felts for the swing arm, I may tap the swing arm bolt for american zerks. The swing arm has new bushings already.
I welded, drilled and tapped the headlight ears for early reflectors. I'm stuck again because I want to paint them and that's not happening until after the holidays.

Don R · « **Reply #52 on:** December 13, 2011, 01:39:51 PM »

I called my local bike shop and ordered new wheel bearings, felts and bushings for the swing arm. I will wait until I have the parts before I take anything else apart. Too many pieces already.

Don R · « **Reply #53 on:** January 10, 2012, 05:57:42 PM »

I got the frame on the table and started putting on parts.

I had to make a puller to get the collar out, it was seized pretty tight.

Don R · « **Reply #54 on:** January 10, 2012, 06:00:40 PM »

The wheel bearings are in, the drum brake is rebuilt, things are cleaned up. I re-painted the spokes on the rim and the sprocket/cover.

This swingarm had new bushings already so I used it, I modified the collar by deepening and widening the grease grooves as in the Honda bible. I bought new bronze spacers and felts. Everything got a dose of anti-sieze and I pumped some grease through the bolt to make sure it was clear and flushed out.
The short chainguard had some gouges and scratches on it. I sanded them, scotchbrited and rubbed it down with peanut oil.

Don R · « **Reply #55 on:** January 10, 2012, 06:25:00 PM »

I ordered an airbox from David Silver Spares tonight, along with a centerstand spring and gas tank chrome strips.

Stev-o · « **Reply #56 on:** January 10, 2012, 07:45:52 PM »

Looks good Don! Have seen the brake shoe separation before, worth the price to replace 'em.

Don R · « **Reply #57 on:** January 13, 2012, 11:32:23 AM »

It's scary to think what could happen if one came apart at speed.

lucky · « **Reply #58 on:** January 13, 2012, 12:12:34 PM »

Question? Why not put the frame over the engine first before building up the frame?
It is much easier and less chance of damaging the paint on the frame to lower the frame over the engine rather, than trying to lift the engine into the frame.

Don R · « **Reply #59 on:** March 02, 2012, 05:32:11 AM »

Well, I've been stalled a bit this winter, drag racing on a pension requires priorities and the 750 has to wait at times. Anyway I now have everything I need to go to paint. I got the David Silver airbox last month and the repop franken sidecovers this month.
I'm thinking of using House of Colors candy teal colored basecoat. I found a place where I can buy Quarts and small amounts of it in candy green or blue to adjust the color if needed too. I already have a quart of their clear which dries like glass. Paint stripper will barely remove it.

Don R · « **Reply #60 on:** April 28, 2012, 01:09:45 PM »

The paint is still on hold but the Dragster is in the trailer ready to race.
I ordered a new K0 wiring harness and have been working on the hand controls and wiring accessories trying to freshen them a bit. I found a real nice 450 right control that looks new so I'm using the top half of it with a black knob from an old one. A headlight relay is probably going on it anyway.
I got a new diehard battery it's agm so no venting issues. Pictures soon.

Greggo · « **Reply #61 on:** April 28, 2012, 02:32:20 PM »

Hey Don, what paint did you use on the Lesters? They look great, kinda flat, which I like!

Don R · « **Reply #62 on:** April 28, 2012, 04:10:41 PM »

Thanks, Rustoleum low gloss black engine enamel. It was what I had, Lol. They looked pretty nice but there were some scratches and rock marks so I hit em with a fine file, where needed then scotchbrite and paint. I auctually sprayed with a crescent shaped cardboard shield for masking and wiped off the overspray with a little laquer thinner.
The front is still original, haven't done it yet.

Don R · « **Reply #63 on:** April 29, 2012, 07:40:49 PM »

I installed some electrical parts. A new wiring harness in ordered. In view of this being a non original resto, I'm adding relays to the electrical to reduce the load on the headlight and start switches. I'm making a new battery cable also and probably a multi fuse block.

I found a 450 RH switch in a broken housing, the switches got moved to a 750 housing and a black button got moved too.

Don R · « **Reply #64 on:** April 29, 2012, 08:03:54 PM »

The new K0 handlebars and hand controls moved over.

lucky · « **Reply #65 on:** April 29, 2012, 09:45:53 PM »

I see that you have the best TIG welding machine in the world!

Miller Syncrowave 250. Nice.

Don R · « **Reply #66 on:** April 30, 2012, 10:22:23 AM »

I think so too thanks, picked it up used, it was a production machine. Inside info got me one that was only used on one shift. I have the foot pedal but prefer the amp control on the torch. It came with a nice water cooled setup too. I used it on the frame repair and installing the Gordons kit.

Don R · « **Reply #67 on:** May 03, 2012, 09:18:35 PM »

I got the harness from vintage CB750.com it looks nice, However the round connector for the ign. plug doesn't match the Honda plug on the switch. I'll try to ream the hole for the center pin, if that ruins the switch plug I'll cut it off and use the new square plug I bought.
I added a ground from the rectifier to the frame ground location and found a fuse panel like the one Hondaman uses. I'll add a fuse for the red wire, the red/white and a fuse for the new feed to the headlight relays in the bucket.

I made a new positive battery cable, the old ones I have look dangerous. I will also make a new ground cable as soon as I find the large ring connector to fit between the frame and engine. pictures to follow.

I also stumbled across a similar looking screen to go behind the side cover louvers. Film at 8.

Don R · « **Reply #68 on:** May 07, 2012, 09:23:10 PM »

I just wanted to see what the bore was so I would know what head gasket to get. Now that it seems to be a stock bore the question is, just slap a gasket on it, or bore it. It seems fast to me. I am thinking it is a K4 engine. It has the 4 cable K0 carbs. The casting # on the cam is high but I know that may not mean anything. I do have an 812 that was run with plugged exhaust. It is packed with carbon. I almost hate to work on it it's so black inside. HMMM.

Don R · « **Reply #69 on:** May 07, 2012, 09:26:15 PM »

I don't know what creatures were living under the rubber nickels but it was packed with cocoons and web like material. It's a wonder the heat didn't burn them out. I did pressure wash the block but not effectively.

MCRider · « **Reply #70 on:** May 07, 2012, 10:01:08 PM »

"I will also make a new ground cable as soon as I find the large ring connector to fit between the frame and engine. pictures to follow."

Interesting stuff. BTW: the ground goes under the head of the top rear motormount, not between the frame and engine. Its ultimately covered by the sidecover. Or pert near. I'll get you a pic if you care. I've seen it put between the engine and fame but that's not original.

Don R · « **Reply #71 on:** May 07, 2012, 10:46:54 PM »

I know and thanks for the correction, but I'm a big fan of the hondaman book and I believe he puts them against the engine. Being a drag racer I ground the heads to each other, the frame and the battery. Of course the Honda ignition won't throw a spark to the piston top but once you have seen the effect of a poorly grounded engine it's hard to leave it stock. The cable end I did find is very similar to later 750 original, not perfect but better than a brittle grease soaked 40 year old one.

Don R · « **Reply #72 on:** May 07, 2012, 10:49:38 PM »

Here is a picture of my replacement cables, I could make more if anyone is interested.

I made the hot cable two seperate parts, the ends are crimped and soldered. I used a cut down distributor cap terminal for the rubber battery boot. The cable is #6 fine strand cable.

MCRider · « **Reply #73 on:** May 08, 2012, 05:46:21 AM »

Quote from: Don R on May 07, 2012, 10:46:54 PM

I know and thanks for the correction, but I'm a big fan of the hondaman book and I believe he puts them against the engine. Being a drag racer I ground the heads to each other, the frame and the battery. Of course the Honda ignition won't throw a spark to the piston top but once you have seen the effect of a poorly grounded engine it's hard to leave it stock. The cable end I did find is very similar to later 750 original, not perfect but better than a brittle grease soaked 40 year old one.

I'll have to look into that. Your cables (next post) look nice. I'd go for them had I not already purchased OEM from Yamiya.

Don R · « **Reply #74 on:** May 08, 2012, 07:48:43 AM »

It's funny, it didn't even cross my mind to find new stock cables. I guess that says something about my thought process. Always trying to make something better, sometimes takes you the long way. When you are done is it really better? I really like the feel of this cable nice and flexible.

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Author Topic: I've been K0'd! (Read 145335 times)