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Author Topic: CL350 Street Tracker / Cafe build  (Read 10923 times)

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Offline madScientist

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CL350 Street Tracker / Cafe build
« on: August 19, 2013, 06:40:40 am »
My brother-in-law collect, sells, and parts out bikes for a living. A few years ago my wife and I were at his place and I was nosing around...stumbled on a 70 CL350. I loved the way the pipes swept up and started talking to him about it. At that time he didn't want to let it go because he wanted to build it up. Every so often I'd pester him about selling it to me. We were down at his place again a few weeks ago and I once again brought it up now that the 750 is more or less done.

This time he relented for $200. He says he has the title for it and it looks mostly complete. The pipes look real good. The chrome is nice. He said the previous people thought the head or valves were bad.

My plan is to make it a "street tracker" style. I'm going to re-use most of the original stuff however I'm going to shave tabs, loose the center stand, chop the fenders, and loose the air boxes to see through the center of the bike. I would like to stay with the color scheme to a point. I'm thinking a darker gold with some light flake with gloss black accents. I haven't come up with the layout of the paint yet but I have awhile for that.

The original plan for the engine was to freshen it up. New seals, gaskets, valves, chains and replace anything worn. However getting into it that plan is changing since it looks like the previous owners tried to use spark plugs that were too big. The plug and piston appear to have tried to share the same area. So the game plan of keeping costs down might be chucked out the window. Especially after viewing the bore-tech website :-/

Going to shop around some and see if I can find some cheaper pistons. I'm likely going to have to go over-bore but I haven't inspected the sleeves yet. That will be tonight. I want to replace valves and guides with kibblewhite so that will chew a good portion of the budget.

Before:






Here are the pictures of the pistons...lovely aren't they? I think I'm going to add them to the wall of shame...



You CAN do great things...with enough beer.


78 cb750f
http://forums.sohc4.net/index.php?topic=113293.0
70 CL350 Street Tracker / Cafe
http://forums.sohc4.net/index.php?topic=125641.0
77 cb750A
74 cb125s
83 KZ1100ltd
76 GL1000

Offline Greggo

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Re: CL350 Street Tracker / Cafe build
« Reply #1 on: August 19, 2013, 07:01:04 am »
Nice piston!!

Offline madScientist

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Re: CL350 Street Tracker / Cafe build
« Reply #2 on: August 19, 2013, 07:03:17 am »
Isn't it though! I pulled the head and had two reactions...

"What the hell..."

and then

"Well there's your problem..."

Guess that explains the 0 compression in the cylinder lol
You CAN do great things...with enough beer.


78 cb750f
http://forums.sohc4.net/index.php?topic=113293.0
70 CL350 Street Tracker / Cafe
http://forums.sohc4.net/index.php?topic=125641.0
77 cb750A
74 cb125s
83 KZ1100ltd
76 GL1000

Offline brandEn

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Re: CL350 Street Tracker / Cafe build
« Reply #3 on: August 19, 2013, 07:58:46 am »
Subscribed!
Can't wait to see what you do with this one.

Offline madScientist

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Re: CL350 Street Tracker / Cafe build
« Reply #4 on: August 19, 2013, 08:09:46 am »
Might take a slightly different direction. Talking to my brother-in-law...we're discussing maybe racing this at mid-Ohio next year...

Regardless I want it to be streetable to a point...
You CAN do great things...with enough beer.


78 cb750f
http://forums.sohc4.net/index.php?topic=113293.0
70 CL350 Street Tracker / Cafe
http://forums.sohc4.net/index.php?topic=125641.0
77 cb750A
74 cb125s
83 KZ1100ltd
76 GL1000

Offline KennyRedman

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Re: CL350 Street Tracker / Cafe build
« Reply #5 on: August 19, 2013, 08:16:19 am »
Awesome- I saw a CL450 last month and decided that's what I want to do next year!

Offline madScientist

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Re: CL350 Street Tracker / Cafe build
« Reply #6 on: October 16, 2013, 11:01:20 am »
I stared at the bare roller last night for awhile trying to get a vision of what I want this to look like and what I can cut out.

I think i'm going to lose both the front and rear fenders altogether. Both wheels are surprisingly clean so I'm going to reuse them after a healthy dose of elbow grease. I plan on eliminating the air and battery box opting for the "see through" look. I havent made my mind up on electrics or the tail yet. I'm not sure I want to do away with electric start because I'm not a big fan of kick starting. Either way whatever electrics i go with will be relocated to a cafe tail hump. I think i'm going to make a tail similar to Blue's in my avatar. I marked out a lot of tabs last night with chalk that I'm going to remove or weld over. Gauge cluster will be speedo only. This bike will have rear sets (maybe from a CBR). Bars are likely to be clubmans to give it a more aggressive stance although I'm pretty partial to M bars. Was considering changing the tank out for a CB tank but I'm on the fence with that. Something about the CL tank just looks goofy to me. I wish cb350F tanks weren't so darn expensive as I think that would flow nicely...

Running rear-sets brings up a curious issue. On these bikes the driver pegs are tied together with a bar under the frame that also includes the kickstand...I hate this bar and it's mount points. So i think i'm going to cut the kickstand and mount points off, find a good balance point, and weld the stand to the frame. One issue I see with this is that the kickstand looks like it will be raised about 1" which will likely put the balance of the bike in jeopardy. However if that turns out to be the case I think i'll make up a new kickstand.

Haven't fully committed to what i'm going to do with the engine either. I DO know i'm going to run the stock pipes and put Mikuni carbs on it. The head will be rebuilt but I'm not sure what porting i want done. Might have to consult the Magician (Mike Rieck) for his opinion. I'm thinking i might cam it up a little and will likely go with oversized pistons. I'm not going to swing for the bore-tech big bore kit though because i cant bring myself to pay that much money for 2 pistons...it was hard enough spending the money on the 4 pistons for the 750.

So that's my thought process. I mostly wanted to get it down so that I wouldnt forget my plans. I'm going to start hitting it now that work is settling down. Over the next couple days I'll be establishing the parts list and budget for the engine and we'll get this part started...
You CAN do great things...with enough beer.


78 cb750f
http://forums.sohc4.net/index.php?topic=113293.0
70 CL350 Street Tracker / Cafe
http://forums.sohc4.net/index.php?topic=125641.0
77 cb750A
74 cb125s
83 KZ1100ltd
76 GL1000

Online 754

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Re: CL350 Street Tracker / Cafe build
« Reply #7 on: October 16, 2013, 09:01:05 pm »
Just get some used 836cc or 915 cc pistons, that you can find rings for.. They are out there with one bad piston , leaves 3 for you, but you probably may need the higher compression type.. Just a lowbucks option.
 I too picked up a 350, was shocked at cam prices...
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline SOHC4 Cafe Racer Fan

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Re: CL350 Street Tracker / Cafe build
« Reply #8 on: October 16, 2013, 09:26:20 pm »
Well, I guess you need to get back to a work in progress! 

Looking forward to this build, in light of your CB750F, and the whole street-tracker look.
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)
2014 MV Agusta Brutale Dragster 800
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.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)

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

Offline madScientist

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Re: CL350 Street Tracker / Cafe build
« Reply #9 on: October 17, 2013, 05:27:36 am »
754 - thanks for the tip! I've been wondering if those would work. I'll dig in and see what I can find. I have another 750F motor that is going to get a 915 treatment. I assume, provided i could get rings, that those pistons would also work? Since, if my math is right, it would put the engine displacement at 368 which would be an overbore.

Racer Fan - Thanks! that F was a joy (and learning experience) to build and even more fun to ride. Hoping to dive in this weekend!
You CAN do great things...with enough beer.


78 cb750f
http://forums.sohc4.net/index.php?topic=113293.0
70 CL350 Street Tracker / Cafe
http://forums.sohc4.net/index.php?topic=125641.0
77 cb750A
74 cb125s
83 KZ1100ltd
76 GL1000

Online 754

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Re: CL350 Street Tracker / Cafe build
« Reply #10 on: October 17, 2013, 06:57:01 am »
Just watch the compression ratio, 350 piston had too high a dome for 750 big bore, so you may need 12:1 type pistons.. Worth taking a look methinks..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline madScientist

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Re: CL350 Street Tracker / Cafe build
« Reply #11 on: October 17, 2013, 08:24:50 am »
Roger that. Time to go digging through the internet!

Thanks again!
You CAN do great things...with enough beer.


78 cb750f
http://forums.sohc4.net/index.php?topic=113293.0
70 CL350 Street Tracker / Cafe
http://forums.sohc4.net/index.php?topic=125641.0
77 cb750A
74 cb125s
83 KZ1100ltd
76 GL1000

Offline Tree

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Re: CL350 Street Tracker / Cafe build
« Reply #12 on: December 07, 2013, 06:24:53 pm »
How'd you make out with the CL350?  Were you able to rebuild the engine?

Offline madScientist

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Re: CL350 Street Tracker / Cafe build
« Reply #13 on: December 09, 2013, 06:10:21 am »
I haven't had much of a chance to get into it sadly. I did get the frame all stripped down, some unused holes welded over, tabs cut off, and the center stand removed. I'm still struggling with how / where to mount the kickstand. I think i'm going to use the same placement as what my 750SS has cause i like it's location. I just hope it doesnt cause centering issues. We'll see.

I did start picking up engine parts. I have the gasket set and cam chain. I think i'm going to bite the bullet and use a bore-tech piston kit.

In the near future i'm going to get the engine parts off to media blasting so i can do the engine over the winter. My shop isn't heated so I end up bringing everything inside and in to my gun room to build. I do some small time smithing work and have had some jobs there that had to get done before i could use my bench.

Probably be another month or better before traction really starts happening.
You CAN do great things...with enough beer.


78 cb750f
http://forums.sohc4.net/index.php?topic=113293.0
70 CL350 Street Tracker / Cafe
http://forums.sohc4.net/index.php?topic=125641.0
77 cb750A
74 cb125s
83 KZ1100ltd
76 GL1000

Offline madScientist

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Re: CL350 Street Tracker / Cafe build
« Reply #14 on: March 24, 2014, 08:04:24 am »
Well spring is pretty much here and it's time to get projects rolling.

The wife, aka "The Boss", has told me I need to get this one built and subsequently sold which is kind of sad. She's also put a budget on me of $1500...I'm starting to rethink this arrangement she and I have...

Anyways...first round of ordering is done. Through Bore-tech I've ordered:

-- steering head bearings
-- 65.5mm pistons
-- gasket set
-- oil seal set
-- ignition switch since the original on the bike is missing
-- cam chain

I'm hoping that the head gasket in the set will work with the 65.5 pistons...my guess is that it wont though which is kind of sad. That chewed up a pretty healthy portion of the budget. However it comes close to tieing up the engine part. Well...that are known at least.

I still need (known):
- sandblasting
- swingarm bushings
- paint
- carbs
- head (mines pretty much junk)
- rearsets (probably from a cbr600)
- tires

There's probably a bunch of stuff I dont know about as well. However...current estimation puts me at about $250 under budget. My guess is i'm probably going to blow that though :-/
You CAN do great things...with enough beer.


78 cb750f
http://forums.sohc4.net/index.php?topic=113293.0
70 CL350 Street Tracker / Cafe
http://forums.sohc4.net/index.php?topic=125641.0
77 cb750A
74 cb125s
83 KZ1100ltd
76 GL1000

Offline SOHC4 Cafe Racer Fan

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Re: CL350 Street Tracker / Cafe build
« Reply #15 on: March 24, 2014, 10:20:47 am »
Budget schmudget.  I never like to do an accounting of my builds, as it will only depress me.
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)
2014 MV Agusta Brutale Dragster 800
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.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)

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

Offline dagersh

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Re: CL350 Street Tracker / Cafe build
« Reply #16 on: March 24, 2014, 10:50:34 am »
+1

 ;D

Gersh
1962 CA95
1966 Black Bomber
1966 CA77 Dream
1967 Superhawk
1970 CB750K0
1972 CL350
1972 CB450/500 Custom
1972 CB500K1
1975 CB550F
1976 CB400F
1975 CB750 Future Restoration
1976 CB750K6
1976 CB750F
1976 GL1000


1968 Suzuki T500 Cobra
1990 BMW K1
2001 'Busa
2003 RC 51
Bunch of Guzzi's

http://www.sohc4.us/gallery/v/members/personal/dagersh/

Offline madScientist

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Re: CL350 Street Tracker / Cafe build
« Reply #17 on: March 24, 2014, 11:08:59 am »
Yeah I made the mistake of totaling up the receipts of the F build in my avatar...it was ugly...

She still doesn't know exactly how much I spent on that one...
You CAN do great things...with enough beer.


78 cb750f
http://forums.sohc4.net/index.php?topic=113293.0
70 CL350 Street Tracker / Cafe
http://forums.sohc4.net/index.php?topic=125641.0
77 cb750A
74 cb125s
83 KZ1100ltd
76 GL1000

Offline SOHC4 Cafe Racer Fan

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Re: CL350 Street Tracker / Cafe build
« Reply #18 on: March 24, 2014, 01:58:35 pm »
Yeah I made the mistake of totaling up the receipts of the F build in my avatar...it was ugly...

She still doesn't know exactly how much I spent on that one...

I don't share specifics when it comes to that topic.
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)
2014 MV Agusta Brutale Dragster 800
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.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)

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

Offline RobbyD

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Re: CL350 Street Tracker / Cafe build
« Reply #19 on: March 24, 2014, 06:14:02 pm »
Subscribed.
 Looks like it's going to be a cool build

Offline grcamna2

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Re: CL350 Street Tracker / Cafe build
« Reply #20 on: March 24, 2014, 06:31:57 pm »
madScientist,
 I have a good rebuild-able cylinder head for you for small $. It came from a #CL350K3

    PM me
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 madScientist

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Re: CL350 Street Tracker / Cafe build
« Reply #21 on: March 25, 2014, 07:29:53 am »
Holy crap that'd be awesome! PM inbound!

Thanks man!
You CAN do great things...with enough beer.


78 cb750f
http://forums.sohc4.net/index.php?topic=113293.0
70 CL350 Street Tracker / Cafe
http://forums.sohc4.net/index.php?topic=125641.0
77 cb750A
74 cb125s
83 KZ1100ltd
76 GL1000

Offline grcamna2

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Re: CL350 Street Tracker / Cafe build
« Reply #22 on: March 26, 2014, 05:49:00 pm »
Mad,
That cylinder head is on it's way to you.
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 madScientist

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Re: CL350 Street Tracker / Cafe build
« Reply #23 on: March 26, 2014, 07:47:52 pm »
Many thanks good sir!
You CAN do great things...with enough beer.


78 cb750f
http://forums.sohc4.net/index.php?topic=113293.0
70 CL350 Street Tracker / Cafe
http://forums.sohc4.net/index.php?topic=125641.0
77 cb750A
74 cb125s
83 KZ1100ltd
76 GL1000

Offline SOHC4 Cafe Racer Fan

  • Speak up, Whipper-Snapper! I'm a
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Re: CL350 Street Tracker / Cafe build
« Reply #24 on: March 26, 2014, 08:35:29 pm »
Our community never ceases to amaze me.
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)
2014 MV Agusta Brutale Dragster 800
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.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)

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

 

;