Author Topic: From Sh*tty to Shiny: Sbeckman7's CB350F Cafe Resto  (Read 65939 times)

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Offline sbeckman7

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #150 on: February 11, 2016, 10:17:12 AM »
Cal, I'll be lucky if I can get a result 60% as glorious as what you were able to do.  Bodywork is NOT my thing  ;D

Won the eBay auction for the rebuilt carbs this morning!  Sadly they don't have OEM brass jets (K&L) but I think I may need to rejet anyways.  My plan is to now sell the originals and make a little money back to keep this project going :)



« Last Edit: February 11, 2016, 10:21:25 AM by sbeckman7 »

Offline grcamna2

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #151 on: February 11, 2016, 11:04:17 AM »
The 'brass' parts from your original carbs. are good to save for these if you ever needed them. Nice looking carbs.  8) were they jetted for CB350F or CB400F ?
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline sbeckman7

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #152 on: February 11, 2016, 11:30:46 AM »
The 'brass' parts from your original carbs. are good to save for these if you ever needed them. Nice looking carbs.  8) were they jetted for CB350F or CB400F ?

Oh good call!  I should do that  8)  I can only assume these are jetted for a 350F based on the ad description.  Wondering if the 400F main jet will work better for me after the head (400F valves), intake (log-style), and exhaust (MotoGP Werks) go on.

Offline grcamna2

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #153 on: February 11, 2016, 11:44:57 AM »
Depending on how the spark plug color looks after a first ride  :)
I would think a set of #75 genuine Keihin main jets would get you started.
« Last Edit: February 11, 2016, 11:56:09 AM by grcamna2 »
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline grcamna2

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #154 on: February 11, 2016, 11:59:55 AM »
I was looking at the pics you posted w/ the fresh carbs.,is that from his Ebay posting? because it shows the kits are K&L which may be decent considering if they were made in Japan.Do you have those carbs open on your bench ?
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline sbeckman7

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #155 on: February 11, 2016, 03:07:51 PM »
I was looking at the pics you posted w/ the fresh carbs.,is that from his Ebay posting? because it shows the kits are K&L which may be decent considering if they were made in Japan.Do you have those carbs open on your bench ?

These pictures are from the eBay listing.  I should have them sometime next week :) 

Regarding carb tuning... I will report back on my plugs once I get it running  ;D  My manual shows #75 main jet as stock for the 350F and 400F so that is definitely what is in the rebuilt carbs.  Likely with a #35 idle jet as well.

Offline harisuluv

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #156 on: February 11, 2016, 06:12:31 PM »
Looks like he forgot to put in one of the bushings.

Offline sbeckman7

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #157 on: February 11, 2016, 09:15:50 PM »
Looks like he forgot to put in one of the bushings.

I'm impressed that you saw that.. Also not too happy about that  ::)  I will send the seller a message.

I made a good amount of progress tonight and I am happy to say I think the frame is going to turn out well :)  I would like to share some pictures to better explain my "vision" for this bike.  The elements I have in mind are contrast and grayscale with some small accents in red.  The majority of the bike will be painted black, however the frame and gas tank will be bare steel.  The sandblasted finish was to ordinary to me and would also look more like normal paint once powder coated.  Brushing the steel does a much better job of highlighting the lack of paint on these surfaces, and it gives me a little more contrast to the black by reflecting more light than the sandblasted metal.  The tank will have a thick red pinstripe down the left side, and several details on the engine and controls will be red as well.  Other than that, it's all black  8)

I began by brushing my frame with a wire wheel attached to a drill.  The key here was going slowly, in terms of drill speed and my movement as well.  This combination yielded a distinct brushed finish while preserving the texture.  Spinning the wire wheel too fast brought the surface closer to a polished finish.



After experimenting with a few different grits of sandpaper, I found 150 grit to blend perfectly with the marks from the wire wheel.  I used the sandpaper to reach smaller spaces the drill couldn't reach as well as to blend everything together.  It also worked very well for removing minor blemishes in the metal.



For those who didn't know, my frame had a decent amount of standing water inside and no matter how much I tried, it was impossible to remove completely.  Every time I flipped the frame upside down, I would get a series of drips of gross black water through several tiny pinholes in the metal.  I realized a way to cure this once and for all would be with application of heat, however once I started I realized it could also play a role in the aesthetics of the frame itself.  Here is the result: notice the opposite side of the frame got sprayed with volcanic-grade steam and gross water!  It's mostly clean now.





I didn't finish the entire frame today but I would say I am ⅔ of the way there :)

But wait, there's more!  Pulled the pistons to clean them and inspect the sidewalls and rings.  Cal, you mentioned measuring the ring gap while installed.  How does this one look?!  ;D ;D


All the others were much better (i.e. not seized) and I will begin cleaning them tonight or tomorrow morning.  My flex hone also came today, but I was wrong about having cutting oil in the garage.  I will look for honing-specific oil tomorrow at the auto parts store :)


In the background of several pictures you can see my first motorcycle: a '97 Triumph Daytona.  It taught me everything I know so far about motorcycle repair and it was a great thing to learn with.  But this little Honda, I want people to look at it and say, "Wow. That is a work of art."

Spence
« Last Edit: February 11, 2016, 09:22:26 PM by sbeckman7 »

Offline MoMo

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #158 on: February 11, 2016, 09:35:43 PM »
Rings are placed inside the bore to measure the end gap

Offline grcamna2

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #159 on: February 11, 2016, 10:09:36 PM »
That nasty water in the frame was gross ! Was that bike parked in a wet area outside(in Marin Co. near the ocean?)all it's life before you purchased it ?
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline sbeckman7

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #160 on: February 11, 2016, 10:20:29 PM »
Rings are placed inside the bore to measure the end gap

Oh I actually didn't know that.  Guess my joke didn't even work then  ::)

That nasty water in the frame was gross ! Was that bike parked in a wet area outside(in Marin Co. near the ocean?)all it's life before you purchased it ?

I think so..  ;D

Offline grcamna2

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #161 on: February 11, 2016, 10:36:51 PM »
Rings are placed inside the bore to measure the end gap

Oh I actually didn't know that.  Guess my joke didn't even work then  ::)

That nasty water in the frame was gross ! Was that bike parked in a wet area outside(in Marin Co. near the ocean?)all it's life before you purchased it ?

I think so..  ;D

lol  :D
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline calj737

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #162 on: February 12, 2016, 01:41:08 AM »
there should be a couple of small holes in the underside of the frame that are drain holes to help let the water out. Locate them and drill them open to help future evaporation.

As I said, I only use the rings on piston end gap as a measurement for reference. Install them in the bores as MoMo said to get the accurate end gap. If they're too small, use a ring cutter/file to open them or replace them.
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline MoMo

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #163 on: February 12, 2016, 02:29:30 AM »
Here is an example of poor drainage(and other factors) taken to the ultimate conclusion :o :o :o



Offline sbeckman7

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #164 on: February 12, 2016, 11:53:41 AM »
Holy moly! Glad my frame isn't that bad  ;D  If I am lucky my head will arrive on schedule today, although I doubt it because as of last night it was in Des Moines, IA.  But at least I can hone my cylinders!

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #165 on: February 12, 2016, 03:40:21 PM »
Damn, that cross-member "supporting" the centerstand looks ready to come free.  Yikes.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline grcamna2

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #166 on: February 12, 2016, 04:05:14 PM »
Here is an example of poor drainage(and other factors) taken to the ultimate conclusion :o :o :o




Larry,
Was this from your original frame from your red CB750 ?
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline MoMo

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #167 on: February 12, 2016, 06:06:48 PM »
Here is an example of poor drainage(and other factors) taken to the ultimate conclusion :o :o :o




Larry,
Was this from your original frame from your red CB750 ?





Good memory ;) :)  Still have the bike,  it's a shame as I never ride it :-[  Trying to sell it though

Offline MoMo

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #168 on: February 12, 2016, 06:08:16 PM »
Damn, that cross-member "supporting" the centerstand looks ready to come free.  Yikes.



After I bought the bike I rode it  once  just like that to see how bad it would flex..............took it up to 70 without any problem.
« Last Edit: February 13, 2016, 03:43:04 AM by MoMo »

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #169 on: February 12, 2016, 10:57:51 PM »
Damn, that cross-member "supporting" the centerstand looks ready to come free.  Yikes.



After I bought the bike I rode it like once that just to see how bad it would flex..............took it up to 70 without any problem.

Wow!  :o
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline sbeckman7

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #170 on: February 14, 2016, 10:33:08 PM »
Been a little quiet while I was waiting for my parts to arrive, but the carbs showed up and the head will hopefully be here tomorrow  :)
Happily, the carbs are not missing that washer as harisuluv pointed out earlier, and the seller contacted me as well via message to let me know it was an extra bushing in the picture.  They look great!!  Very happy for the price.



Tomorrow I plan on cleaning the pistons and honing the cylinders, which will just leave me with new studs to source before I can reassemble the engine!  I am hoping the intake box and exhaust will be ready by the end of the month.  The clear powder coat for the frame is on the way and hopefully this coming Saturday the frame itself will get painted!  Things are coming along ;)

Offline grcamna2

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #171 on: February 14, 2016, 10:40:51 PM »
Nice looking rack of carbs.,was it a private seller or a commercial business that sold them to you? he spent lot's of time on them  8)
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline sbeckman7

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #172 on: February 14, 2016, 11:04:05 PM »
Nice looking rack of carbs.,was it a private seller or a commercial business that sold them to you? he spent lot's of time on them  8)

I believe this came form an individual who rebuilt them himself although I can't say for sure.  His eBay store/username is CB400fss and he was very straightforward to deal with.  I would recommend  :)

Offline calj737

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #173 on: February 15, 2016, 01:29:09 AM »
From the looks of the outside, I would expect the insides to be very clean. But while you're waiting for the head, pop the bowls off and make sure the interiors are spotless. Maybe even remove the jets and record what # they are for tuning purposes. Its a confidence measure, and when you go to tune your bike, and someone says, "Well what carb settings do you have?" you won't answer "They're fully rebuilt so I suspect that...". This will eliminate the doubt for you, and aide anyone later with exact information.

They do look great, but be sure now, not frustrated later.  :)
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline grcamna2

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Re: Sbeckman7's Scrap-Worthy CB350F Cafe Resto
« Reply #174 on: February 15, 2016, 06:35:14 AM »
I agree w/ cal about checking them,make sure the float heights are correct also and all the same between the 4.
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.