Author Topic: CB 750 Project 1 - Rides Well but a few tweaks needed (Read 116358 times)

timbo750 · « **Reply #600 on:** September 04, 2016, 05:28:11 PM »

Thanks Sean

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maduncle · « **Reply #601 on:** September 05, 2016, 03:54:44 AM »

Quote from: timbo750 on September 04, 2016, 05:28:11 PM

Thanks Sean

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Clarke Rubber sell good rubber vacuum tube that fits onto the float overflow tubes real nice. I got it all for my Cb750 from my local store.

Terry in Australia · « **Reply #602 on:** September 05, 2016, 04:01:09 AM »

Ha ha, it's easy to get confused when you're not playing with these things regularly Tim, but as has been said above, only the K0's had individual expanding coil springs inside each slide, the K1- onwards had a single linkage that opened and closed all the slides at once, with one single external retracting coil spring.

Once you've hooked up the cables with a smidgeon of slack for both, you should be able to turn the throttle, let go of it, and have the spring pressure snap it closed. If it doesn't, well, it's back to the drawing board mate.........

timbo750 · « **Reply #603 on:** September 05, 2016, 03:55:03 PM »

Didn't get to the shed last night for some fresh happy snaps but here are a few from last week. I have now got the throttle doing what it should, it returns on its own and not too hard turn to turn where it matters. also got the grips on and the clutch handle finally on, which is my next challenge. I used an aftermarket Nissin brake master from DCC and at the moment the only clutch handle with the same shape and profile is all shiny and the brake is matt black.

As you will see from the photos I put franks frame kit a little too far back but all still works.

Also, anyone got photos of where the overflow tubes should sit at the back of the engine and also where the fuel lines run through it all?

Terry in Australia · « **Reply #604 on:** September 05, 2016, 05:06:43 PM »

G'Day Tim, there should be (or at least, was once) a metal tab at the back of your engine with a slot to poke all the overflow tubes, but if you don't have it any more, as long as they're all bunched together between the back of the engine and the swing arm, it'll be fine. Cheers, Terry.

timbo750 · « **Reply #605 on:** September 05, 2016, 05:51:11 PM »

Terry, is that a 12mm hole through the case? I think I but a bolt through it if it is.

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Terry in Australia · « **Reply #606 on:** September 05, 2016, 06:24:49 PM »

G'Day Tim, no the little metal plate with a long slot pressed into it has an 8mm hole and mounts on the bolt to the right of that 12mm hole. Cheers, Terry.

timbo750 · « **Reply #607 on:** September 05, 2016, 10:00:50 PM »

Terry I don't think I have seen anything looking like that. I will sort out something that will do the same.

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Terry in Australia · « **Reply #608 on:** September 05, 2016, 10:57:04 PM »

Yeah, it's probably been lost over the last 40-odd years mate, a cable tie will work just as well. P.s, I think I bum-drummed you, it only has a 6mm hole and is located on the vertical crankcase through-bolt behind the kick starter. Cheers, Terry.

timbo750 · « **Reply #609 on:** September 07, 2016, 06:12:03 PM »

A few more photos for anyone interested, when I first cleaned and rebuilt the carbie I was very happy with how they looked as they were in a very bad shape when I got them but now compared to the freshly painted engine they don't look so clean.

timbo750 · « **Reply #610 on:** September 07, 2016, 06:25:18 PM »

The next question I have to brains trust out there is about the airbox and no I am not going to put pods on (this bike anyway).
I have two lower sections that are very different and would like to know which one would be better.

Terry in Australia · « **Reply #611 on:** September 07, 2016, 09:55:05 PM »

Use the correct one Tim (the one with the butterfly head screws) if you try to use the "F" air box you'll crack your sidecovers, as the F air box (the other one in your pics) is slightly wider. Cheers, Terry.

timbo750 · « **Reply #612 on:** September 07, 2016, 10:10:24 PM »

Thanks Terry

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Terry in Australia · « **Reply #613 on:** September 07, 2016, 11:06:15 PM »

No worries, but on reflection, it's the F2 air box that's wider Tim, so you'd only have a problem if you installed F2 carbs. I'd still use the K series air box on your bike though.

timbo750 · « **Reply #614 on:** September 10, 2016, 08:15:35 PM »

Working on getting the wiring all hooked up now but I also need to get the fuel line out of the way in the right position. With most things still not in place there are few places to run but I know there is only one that will avoid entanglement and issues. The first 2 photos show where i have it sitting now and I am sure it is wrong, the third show an area where I think seems to be best, can someone confirm please and if I am wrong please send me in the right direction.

maduncle · « **Reply #615 on:** September 11, 2016, 03:27:05 AM »

Well - first I would cable tie that wiring harness down tight along the frame and out of the way.

Then route your fuel lines back to the petcock.

timbo750 · « **Reply #616 on:** September 11, 2016, 01:47:11 PM »

Cliff, yes the wiring needs cable ties and needs a few more connectors made up to for the coils. I am just being a bit OC on where some of these things finally sit and just want to get the fuel line out of the way as it is giving me the #$%*s.

Terry in Australia · « **Reply #617 on:** September 12, 2016, 02:10:07 AM »

You're right Tim, they're not routed correctly. Take a look at the cast backing plate between carbs #3 and 4 and you'll see two holes. the hose from #1 and 2 goes thru the bottom hole, and #3 and 4 thru the top hole. Have fun finding somewhere to install inline filters! (you should)

timbo750 · « **Reply #618 on:** September 12, 2016, 02:59:52 PM »

Thanks Terry. Picked up a new tee b piece for the fuel line as well so will sort that soon.

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timbo750 · « **Reply #619 on:** September 12, 2016, 11:24:09 PM »

On a different note, I picked up some parts today and I also now have seen one of those little tabs you talked about Terry. I didn't need any of it now but I have 3 frames and now nearly have 3 complete engines, what's more it has an alternator cover in very good condition.

Terry in Australia · « **Reply #620 on:** September 13, 2016, 03:38:25 AM »

Well done Tim, and if you want to sell any or all of those unwanted parts, let me know, cash waiting! Cheers, Terry.

timbo750 · « **Reply #621 on:** September 13, 2016, 04:25:40 AM »

Terry . Just let me know if you need anything. Still have that K0 front hub.

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Terry in Australia · « **Reply #622 on:** September 13, 2016, 04:44:30 AM »

Thanks Tim, I still need the hub for my K0 resto, and I like to stockpile whatever parts I can get my hands on for future projects. I'm thinking about putting up another shed when the weather improves so I can park my bikes in one, and my parts in the other. At the moment, my garage is more like an obstacle course.........

timbo750 · « **Reply #623 on:** September 13, 2016, 01:27:53 PM »

Terry, that would give me shed envy, I have a small shed at home where I work on the bike and no a lot of spare space. But I do have an old storage room room at work that about the same size as my shed for keeping all the extra bits I have. I too like to have heaps of extra bits and pieces, I plan on working on bikes for as long as I am standing, gets me out of the house and stops me thinking about work.

maduncle · « **Reply #624 on:** September 15, 2016, 05:18:55 AM »

How the hell did you find CB750 parts for sale in Victoria before Terry?

Shepparton swap meet?

Anyway - nice score Tim, looking forward to going for a ride with you once you bike is built.

S'pose we should invite Terry too ...

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Author Topic: CB 750 Project 1 - Rides Well but a few tweaks needed (Read 116358 times)