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Author Topic: '73 CB250 - Doing it right this time round.  (Read 104317 times)

Offline Green199

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Re: '73 CB250
« Reply #40 on: Jul 11, 2012, 15:25:30 »
While I had the stator cover off for the timing, I gave the side covers a bit of a clean and polish. Just gave it a once over with 320 grit wet and dry and then used some wire wool to bring out the shine. I didn't want it too polished because it would be a nightmare to keep clean and because I want this bike to look like it gets ridden and isn't just a show piece.

I also replaced most of the bolts with stainless allen heads, but there are a few I still can't get out and a few which I didn't have the correct size replacement for so they will have to stay in for the time being.
1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0

Offline Green199

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Re: '73 CB250
« Reply #41 on: Jul 11, 2012, 15:30:19 »
And finally...(I really need to find out how to put more pictures in a post haha)...

...put another few coats of primer on the seat and let it dry overnight. Just need to give it a wet-sand and should be able to spray some colour tomorrow as long as the weather holds up.

I moved the mounts for the seat about an inch forward. I should of really put the tank on the bike as well when I took the picture but I wasn't really thinking. Oh well.

I'm not too bothered about the quality of the base (the bit which gets covered by the seat) as I'm going to give it a thick white undercoat and leave it as it is.
« Last Edit: Jul 11, 2012, 15:32:59 by Green199 »
1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0

Offline ponieswhee

  • Posts: 28
    • CB175 build
Re: '73 CB250
« Reply #42 on: Jul 11, 2012, 18:29:30 »
Seat's looking good. That crack in the intake manifold was probably leaning out the mixture pretty badly and would partially explain why the revs don't drop when you let off the throttle. I had the same issue with my GPz and ended up caulking it too until I could get a replacement :P

Offline Green199

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Re: '73 CB250
« Reply #43 on: Jul 13, 2012, 17:20:13 »
I had the same issue with my GPz and ended up caulking it too until I could get a replacement :P

So I'm guessing caulking it works for the time being?

Soldered up the crack in the overflow pipe. I sanded it down since I took the picture so the solder isn't as clumped up and bumpy as is shown...

Hopefully this should stop the fuel overflow leak...only one way to find out...
1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0

Offline Bert Jan

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Re: '73 CB250
« Reply #44 on: Jul 14, 2012, 05:11:36 »
please let us know if the leaking has stopped. I have a similar problem and going crazy over it.
Oh one more thing:

KEEP THE FAIRING!!!
You can't spell fairing without fair. So give the bike what it deserves!
http://outsidersmotorcycles.com
http://www.facebook.com/OutsidersMotorcycles/

Netherlands represent!

Luctor et Emgo - I struggle and give up

'Anything we did for Uncle Scam or Nasa was soldered, period. No crimps allowed.' -Swagger

'Real men lick their hands and bridge the solenoid with their fingers.' -Sonreir.


I do stuff all the time that wasn't meant to be done  ;D Fun, isn't it  ;) - CrazyPJ

You want to lubricate the nipples- Tim

Offline Green199

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Re: '73 CB250
« Reply #45 on: Jul 16, 2012, 17:53:57 »
please let us know if the leaking has stopped. I have a similar problem and going crazy over it.

The soldering officially works so I'd definitely recommend doing it if you have a similar problem. I'll see about the fairing! ;) haha...going to build with out it and when its kind of finished (most projects like these seem to never finish haha) I'll whack it back on and see if I can make it work.

The original bit of sealant didn't work, and I was a bit put off because once it had dried it was still white. So I found some black sealant and tried caulking it again...made sure it was on nice and thick this time....and it seemed to work. (Still no luck trying to find a replacement so If anybody has let me know and I'll happily take it off your hands  ;D)

Put the first few coats of paint on, but the nozzle broke and started spitting paint everywhere. So I had to spray a thick first coat on, and then I'll wetsand and lay some thinner final coats over the next few days.
1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0

Offline Green199

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Re: '73 CB250
« Reply #46 on: Jul 16, 2012, 17:56:56 »
Got to this point...and then thought f*** it and began to fully tear into it.

Started by removing the headlight and gauges, and started on the wiring. I need to check the conditions of the fork stancions because they seem rather pitted and rusty.
« Last Edit: Jul 16, 2012, 20:39:12 by Green199 »
1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0

Offline Green199

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Re: '73 CB250
« Reply #47 on: Jul 18, 2012, 19:49:29 »
Not a lot achieved today....managed to free the motor from the frame and remove the wiring loom/foot controls. Then I heard the pub calling so had to call it a day haha...don't judge me!   ;D
1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0

Offline Green199

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Re: '73 CB250
« Reply #48 on: Jul 19, 2012, 18:38:44 »
So with the frame almost bare I started to begin stripping the paint. Trying to do this on a budget so I couldn't really afford to get it sand blasted so I'm knuckling down with the wire wheel! Took it to the rocker cover to get rid of the corrosion and it seemed to shine up quite nicely. (Can only just tell in the pics, garage was pretty dark when I took the pic).

Decided that I will be going back to the original Gulf theme I was planning, but going to get it sprayed by someone other than myself. So for the time being Im going to just have a temporary spray job until everything else is done. Because of the dodgy nozzle on the grey paint I sprayed the tail with I had to leave the original colour, so I whacked a 'wicked cool' racing stripe down the middle...because, well, Its the easiest mod to get that extra 10Hp  ;) haha...didn't get a neat enough line with just masking tape so I'm going to get some pinstripe tape to outline the stripe in.
1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0

Offline Green199

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Re: '73 CB250
« Reply #49 on: Jul 19, 2012, 18:42:23 »
Tank turned out better than the tail, mainly due to paint the being flicked everywhich f*****g way by the nozzle, and because Im a total dick and managed to drop the seat just after painting the stripe and chipped it a bit...oh well, it'll have to do for the time being. The seat looks a bit wonky in the pics but its not sat on the frame properly.
« Last Edit: Jul 19, 2012, 19:06:56 by Green199 »
1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0