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Author Topic: '73 CB250 - Doing it right this time round.  (Read 82118 times)

Offline Green199

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Re: '73 CB250 - Doing it right this time round.
« Reply #570 on: Feb 03, 2017, 18:24:30 »
Well done mate kinda knew you'd win a nice solid build and great thread some great pics too ,enjoy the spoils of winning from  Dime city cycles great bunch of guys n girls ,what you got planned any other  builds in the pipeline ?

Thanks Yorkie mate. Was pretty chuffed to be nominated again and never really thought I would win it.

No plans for more as of yet, once I get some free time from University I'm going to be putting some miles on this one first. We shall see what happens after that :P. Feels a bit odd not having a major project in the works haha
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 - Doing it right this time round.
« Reply #571 on: Mar 06, 2017, 10:55:47 »
Sorted out a rebuild kit for my master cylinder and some other bits and bobs (jets etc) from Dime City Cycles courtesy of my BOTM giftcard.

So I can get some proper mileage on her hopefully in the next few months.
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 - Doing it right this time round.
« Reply #572 on: Mar 22, 2017, 11:05:05 »
I ain't saying nothing  :-X ;)

But there will be a DTT representative in the show :P

« Last Edit: Mar 24, 2017, 16:37:31 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 - Doing it right this time round.
« Reply #573 on: Apr 07, 2017, 09:37:39 »
Had the bike sat for a while since it last ran, and forgot to drain the bowls  >:(

Opened them up the other day for some prep and there was a bit of crud and build up so I had to boil the carbs in lemon juice to clean them up. It obviously stripped the black paint off, so now I'm questioning whether I should spray them up again or just try to polish them as I imagine the paint wouldn't have lasted long anyway.

Hopefully within the next 4 weeks after my exams pass, I can finish the wiring loom and then go for a few runs.


1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0

Offline Maritime

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Re: '73 CB250 - Doing it right this time round.
« Reply #574 on: Apr 07, 2017, 09:44:40 »
I'd just leave them as is. Polished alloy does not stay shiny in the UK climate without a lot of upkeep. It's just the same here in the Maritimes with the fog and rain etc, I polished up the alloy on my GL 1 time the first ride I got caught in some drizzle it looked like shit, so I left it.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline Green199

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Re: '73 CB250 - Doing it right this time round.
« Reply #575 on: Apr 07, 2017, 10:09:26 »
Yeah i'm thinking the same. I may try a little rubdown with some Autosol but if nothing comes of it I won't be too disheartened. I may go down the paint route in future if I can get something with enough resistance to fuel, though I doubt it.
1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0

Offline Maritime

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Re: '73 CB250 - Doing it right this time round.
« Reply #576 on: Apr 07, 2017, 10:58:55 »
use an engine paint and cure it in the oven, I use a toaster oven outside, that will make them pretty fuel stable for years. I haven't done carbs but have done engine cases etc that have had fuel spill from stuck floats and they survived fine with just a wipe down with paper towel.  I am going to be doing the GL valve covers and belt covers this spring with VHT engine paint.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline Green199

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Re: '73 CB250 - Doing it right this time round.
« Reply #577 on: Apr 07, 2017, 11:18:07 »
I used PJ1 on the cases (and the carbs before I stripped them), and used a heat gun to attempt to cure it.

I've heard good things about its fuel resistance, but not sure how well it would hold up on the carbs. I'll see how well the paint on the motor lasts and go from there.
1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0

Offline Maritime

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Re: '73 CB250 - Doing it right this time round.
« Reply #578 on: Apr 07, 2017, 11:24:04 »
Heat gun won;t really cure the paint. Running the motor to operating temp for 30 min or so will. The carbs however never get hot. You need the 30-45 steady heat to get the paint cured on the carbs and an oven is best. Depending on the paint, in the house can be ok. I have used one brand, might have been VHT that claims no toxic off gases and low odor and it was true, I could have used the kitchen oven with  no worries.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline Green199

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Re: '73 CB250 - Doing it right this time round.
« Reply #579 on: Apr 07, 2017, 11:33:32 »
I didn't think it would be enough. Been waiting for the loom to be done so I can run the motor to cure the paint properly.

Hopefully in the summer once its on the road I will touch it up a bit and may repaint the carbs and bake them properly.

The stuff I used is carcinogenic apparently, so I may look at an external oven or something to cure them.
1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0

Offline Maritime

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Re: '73 CB250 - Doing it right this time round.
« Reply #580 on: Apr 07, 2017, 11:47:36 »
Yep, you can make an oven with some wood and insulation and a couple light bulbs. Just need a thermometer and a vent to adjust the heat.  The paint doesn't need high heat, most are 200-250 deg F and they will cure.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline Green199

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Re: '73 CB250 - Doing it right this time round.
« Reply #581 on: Apr 07, 2017, 12:04:31 »
sweet. That sounds like a plan.

I'll probably do a recoat on the motor too as there's some bits which need to be touched up, but at the minute I need to stop pissing around and get her on the road haha.
1973 CB250 'Doing it right this time round' - http://www.dotheton.com/forum/index.php?topic=36795.0