Author Topic: 750C restoration  (Read 1077 times)

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Offline Peterengland

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750C restoration
« on: April 17, 2014, 12:19:14 PM »
Just got a 1980 750C and it's in poor condition but the engine is fine so I need to get the frame powder coated. Any special tools I need for this, what order should I do it in or doesn't it matter? I already know the engine is the last thing.

Offline Peterengland

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Re: 750C restoration
« Reply #1 on: April 19, 2014, 09:06:49 AM »
Cheers guys, looks like I'm on my own

Offline KayOne

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Re: 750C restoration
« Reply #2 on: April 19, 2014, 09:26:28 AM »
Hi Peter. It is a matter of personal preference, but I like to disassemble the bike one item/sub-system at a time. Inspect, clean and repair each piece and then store. Create a list of spare parts required as you go. For instance, remove exhaust system determine if it is usable, requires replacement, chroming, ceramic coating etc. Add new exhaust gaskets to your part list then move on to next item. Make sure you take lots of pics during disassembly, you would be amazed what seemed obvious when you took it apart becomes a Rubic cube two years later when it comes time to reassemble.

If you go at a deliberate pace you will also be able to research what parts are available where and more importantly, what is not available. You can also research how to dissemble/assemble a sub-assembly and determine what may be missing and/or worn. For instance, my bike was missing or had incorrect flat/lock washers on approximately 40% of the fasteners.

I powder coated my first restoration but I doubt if I will use powder on the next bike. There are some good rattle can paints out there now and if you can clean the frame in your shop, or send it away for media blasting I would recommend that route. This is a matter of preference though, personally I will use the savings toward new parts.

I have a '79 CB750F with a DOHC engine and they are sweet runners. You will enjoy this bike.

CB750 K1 restored
1979 CB750Fz - original except for exhaust, 14000km
1984 VF45F Interceptor - all original, 12000 km
1968 S90 - all original, 2100 miles
1973 H2a, Restored
1973 H1D, next project
CB750K1 (sold)
1976 KZ900 (sold)
1981 CB900F (under restoration)
2015 Yamaha FJ09, my appliance rider

Offline Peterengland

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Re: 750C restoration
« Reply #3 on: April 19, 2014, 02:22:34 PM »
Cheers for that mate. I have started at the rear of the  bike as it's less complicated and have the rear wheel, shocks, footrests, battery box etc out and labelled all the electrics, so far so good and it's only taken 2 hours so far. Will remove carbs tomorrow and drop engine next week. Hope to have it all done and together by June. Dave Silvers only 25 miles away so will get all parts in one hit. The bit I'm dreading is the front and head bearings etc.

Offline eastyork1977

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Re: 750C restoration
« Reply #4 on: April 20, 2014, 06:28:56 AM »
I'm currently on 750c for someone so this post has great timing for me.

Carb rebuild and front forks are up first since they are the glaring issues in my case.

'73 CB350G
'75 CB400F
'77 CB550K3 "Swayze"
'78 CB550K Stock
'78 CB750F2 Stock-ish

"take a peak." - Don Cherry

"If I can bounce a wrench off a tyre and it hits you, you're standing too close."

Offline Peterengland

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Re: 750C restoration
« Reply #5 on: April 20, 2014, 06:59:18 AM »
Luckily for me the carbs and forks are fine. The carbs are British as the us has the accelerator pump which is horrid so these are much better all round. Got engine out this morning so all I have got left to do is detach forks and coils etc and job done! Took me a total of 3 hours so far.

Offline Peterengland

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Re: 750C restoration
« Reply #6 on: April 24, 2014, 06:16:47 AM »
Frame etc being picked up this evening to go to powder coaters, tank and side covers also to be sprayed. Just got to clean everything else now so it's nice and clean when I reassemble the thing!

Offline eastyork1977

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Re: 750C restoration
« Reply #7 on: April 27, 2014, 07:31:58 PM »
Wrestled to carbs off today, man there are a lot of connections on that thing.

Slow response to the 750 custom could be mostly due to the fact that its a Dual over head cam and its posted here on the Single Over Head Cam forum.

I don't mind the duallies, as I like to call them, just don't have a lot of experience with 'em. They made the tanks a whole lot more stable after '78 thats for sure.

Some things I found were a broken tach cable and missing tach seal.
Forks look wet so they're getting a refresh and re-seal.


'73 CB350G
'75 CB400F
'77 CB550K3 "Swayze"
'78 CB550K Stock
'78 CB750F2 Stock-ish

"take a peak." - Don Cherry

"If I can bounce a wrench off a tyre and it hits you, you're standing too close."