Topic: 3,2,1....ignition!

[jaannaktin]

I am very pleased to post the link to my test firing of my 1970 CB 750.

As posted previously, this was last run in 1991 (best guess) and left under a tarp. The sordid history is hard to piece together, but included a dump (some scuffs on the pipes to confirm that story) and probably some major engine overhaul (serial numbers don't "match").

I cleaned some major, disgusting sludge out of the tank (four separate acid washings still left some debris), rebuilt the petcock and carbs (carbs actually weren't all bad), replaced the fuel lines (with filters), changed the oil and dropped a new battery in. My goal was to see IF it would start, then I could continue on with the rest of the project.

I did NOT (yet) repalce spark plugs. The seat is off at the local upholsterer. I'll post when that comes back, as the place looked great but I don't want to recommend without results, yet.

The movie is a little "blair witch project" because it was shot on my treo phone and it was about 100 degrees with 100 percent humidity in Allentown last night. Once I filled the tank (NO LEAKS!!) I was a little manic and euphoric to hear all cylinders fire. A little tweaking of the idle adjustment screws got the tach down below 1500 rpm. I think the throttle cables are a little tight and will loosen those.

Anyway, enough diarrhea mouth. On with the show. The link is posted on this crummy msn group hosting feature, so don't be thrown off by the link -- I had to create a "dummy" group to be able to post my movie!

http://www.msnusers.com/SOHCForumMembers/Documents/vrooom.mov

Jaan

[Bob Wessner]

I'd love to hear it, I have a K0, build date 12/69 and registered in '70, but it won't let me in. Asked for some sort of registration (birth date) then tells me I'm not authorized.. and to make matters worse, it disables the back button.. hate that 

[polishbeer]

You have to set the settings on the membership to accept all members, but you'll be open to spam, porn and junkmail, so beware. 

Jordan AkA polishbeer

[jaannaktin]

I apologize for any inconvenience. It is set on the most open settings, but it appears Bill Gates wants you divulge personal information before allowing us to share his cyber-space. Shame.

I'll find another place to post my file. Check here later for instructions.

 

Jaan

[jaannaktin]

 

Okay. Sorry about that. I feel a little dirty, but I found a free video hosting site -- make sure you have your filters all set to maximum. I have to go and wash my hands after uploading my video. Sorry again about the quality, but i think the sound comes through nicely. If this works and I don't get trashed with negative feedback, I'll try to post somethin a little less nausea provoking next time...

http://video.freevideoblog.com/Player.aspx?fileid=D946D780-0347-4B6B-A1F3-8D17EF69340F

If the link doesn't work, the segment is titled "my motorcyle runs after 14 years"

Jaan

[Dennis]

couldn't get it to work! the video that is!
who knows?
So when are you coming to central Jersey for a ride?
BTW I'm figuring that my 750 didn't run for about 21 or 22 years before I got it.
'75 CB750F, probably last run aroung 1981 or '82
Out of hibernation in '03

[Bob Wessner]

It worked for me, sounds great doesn't it after all that time. 

[eldar]

Mine kinda sounds like that just louder. I have to get my exhaust sealed though, then it will quite some.

[mcpuffett]

hey jaan,ain't that a great feeling hearing that motor come back to life again      mick.

[jaannaktin]

 

Thanks for all the encouragement! I actually rode it, too (with no seat)! I have a long driveway and went up and down, enough to get into second gear and feel the wind blowing! It starts really easily now -- I will do the final idle tweaking and pressure checks once I install the new carb gaskets that came today. The number four carb sprouts gasoline from the overflow valve occaisionally. I think the old gasket is catching the edge of the float because it stops after a gentle tap.

Next on the agenda -- new tires and fork seals. Brake bleeding was a piece of cake! I'll post pictures of my apparatus after the weekend.

Jaan

[polishbeer]

AWesome sound man!  I have been riding my CB450 K2 all over lately because I am in love with that bike, but now I think I need a CB750 with original pipes.  It sounds freakin' great.

My CB500K-0 runs fine but the aftermarket pipes make it sound like a food processor.  Not only that, but my CB450 k2 would whoop my 500's @$$ in a race up to about 90mph despite giving up about 6hp.  It's just a lot lighter and rev-happy.

I need a CB750K1,2 or 3.  Okay maybe NEED is not the right word, but I want one, so there.

Jordan AkA polishbeer