Author Topic: What did you do to your bike today ?  (Read 1581140 times)

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Online BPellerine

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Re: What did you do to your bike today ?
« Reply #27950 on: June 16, 2019, 05:32:39 pm »
Head off. Nothing catastrophic  ??? :) Other than a slightly bent #4 intake.
that was fast!if .005 causes that,I wonder what valve to piston clearance you have,and what would be "normal".bill
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Online PeWe

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Re: What did you do to your bike today ?
« Reply #27951 on: June 16, 2019, 09:33:12 pm »
Head off. Nothing catastrophic  ??? :) Other than a slightly bent #4 intake.
that was fast!if .005 causes that,I wonder what valve to piston clearance you have,and what would be "normal".bill
Timing must been off. I noticed good clearance with CycleX CX-7 cam, NOS cast RC836 pistons, 34 mm in valves.

Good news that only 1 valve need to be replaced.
CB750 K6-76 1005cc JMR Billet block.
CB750 K2-75 Parts assembled to stock K2

Offline CarbonK

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Re: What did you do to your bike today ?
« Reply #27952 on: June 17, 2019, 09:23:31 pm »
Tried my hand at flux core welding for the first time. Shortened a brake pedal to fit cb400f pegs on cb550.


Offline Gurp

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Re: What did you do to your bike today ?
« Reply #27953 on: June 18, 2019, 05:59:03 am »
Looks really good for flux.
Mankinds Greatest enemy has and always be itself.


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Poor boy chop 73 CB500 chop

Offline CarbonK

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Re: What did you do to your bike today ?
« Reply #27954 on: June 18, 2019, 08:05:40 am »
Looks really good for flux.
Yeah, I got real intimate with the die grinder.

Check out my first go on this spare, trashed brake pedal where I completely missed the joint.

Offline Gurp

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Re: What did you do to your bike today ?
« Reply #27955 on: June 18, 2019, 09:47:57 am »
Looks really good for flux.
Yeah, I got real intimate with the die grinder.

Check out my first go on this spare, trashed brake pedal where I completely missed the joint.


I am not a good welder myself. In fact i own 3 grinders!!!!
Weld it thick amd grind it slick!
Mankinds Greatest enemy has and always be itself.


slow Progress 74 cb550.

Poor boy chop 73 CB500 chop

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: What did you do to your bike today ?
« Reply #27956 on: June 18, 2019, 11:00:41 am »
The apparent culprit (well other than me being the causative agent). After talking with Mike he suggested this as a possibility. Large over size valve hitting a large over size TDC tool. The 5mm stem kit can't take the hit like the stock 6.5mm valves. Looks like I need to make a TDC tool from a spark plug unless someone has another suggestion other the obvious be gentle  ;D ;)



As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: What did you do to your bike today ?
« Reply #27957 on: June 18, 2019, 11:07:45 am »
Head off. Nothing catastrophic  ??? :) Other than a slightly bent #4 intake.
that was fast!if .005 causes that,I wonder what valve to piston clearance you have,and what would be "normal".bill

#$%* Bill, as many times as I've had this sum#$%* apart I should be on a NASCAR pit crew haha. I have a Gordon frame kit installed. Took me about 2 hours.

Considering none of the other valves kissed and this head and cam ran for 135 miles previously it became process of elimination. A WTF moment. Hoping to have it together for the AMA event unless I do something else  ;)

As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Online PeWe

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Re: What did you do to your bike today ?
« Reply #27958 on: June 18, 2019, 12:09:37 pm »
The 5mm stem valves are more flexible. I was a little bit worried first.
I checked TDC without rockers or cam sprocket bolts. I noticed how the advancer unit T lined up with case mark, piston 4 at top. Lined up well with advancer at max counterclockwise position of its play. Same with 2 different crank shafts with advancers.
I was sure to bend valves with piston stop and valves lifted by cam.

I set ignition according to real TDC too which will follow advancer in correct position. Advancer at max clockwise will end up in too advanced ignition and run sh!t on low rpm and might ping if not compensated with too  rich carbs.
CB750 K6-76 1005cc JMR Billet block.
CB750 K2-75 Parts assembled to stock K2

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: What did you do to your bike today ?
« Reply #27959 on: June 18, 2019, 12:58:05 pm »
My Dyna 2000 "T" 1-4 lines up perfectly with the case "arrow". Now that I know that I won't be bending any more valves  :o

Expecting/hoping to have the head back first of the week. That gives me the weekend free for the Airstrip Attack this weekend. 1/2 mile top speed runs. Spectator. I should have enough time after to get it back together so I can go watch the Pikes Peak Hill Climb the following weekend before loading up for AMA Vintage Days.

Yeah, I probably just shot myself in the foot! haha
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Online PeWe

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Re: What did you do to your bike today ?
« Reply #27960 on: June 18, 2019, 09:25:45 pm »
Not that big problem after all. I recently saw a CB750 head with piston at the shop nearby that had a 5mm stem ex valve sitting like a crashed UFO burried into the top of the piston. The disc only.
Its seat was removed and was waiting to get a new seat and fix the head.

The engine started to sound strange, owner did not shut it off soon enough. Cam holders came loose.  I do not know for sure, I guess over tightened M6 bolts holding them. Valve cover with supporting bolts should not be needed nowadays, right?
Especially not the 5 mm valve kit that has not as stiff springs as the stock 6.5 mm stem valves racing springs.
« Last Edit: June 18, 2019, 09:27:33 pm by PeWe »
CB750 K6-76 1005cc JMR Billet block.
CB750 K2-75 Parts assembled to stock K2

Offline Bandit18

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Re: What did you do to your bike today ?
« Reply #27961 on: June 19, 2019, 08:14:35 pm »
Changed leaky stock oil pressure sensor..went for ride..leak free.. ;D happy boy.

Offline Don R

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Re: What did you do to your bike today ?
« Reply #27962 on: June 19, 2019, 08:43:25 pm »
 Broke it into pieces so it will fit on a pallet for shipping, well I really didn't break it. I spent a lot of time unscrewing things. T350 Suzuki.
If the things you own end up owning you, it's better to be owned by some cool things.

Offline Terry in Australia

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Re: What did you do to your bike today ?
« Reply #27963 on: June 19, 2019, 08:52:22 pm »
Broke it into pieces so it will fit on a pallet for shipping, well I really didn't break it. I spent a lot of time unscrewing things. T350 Suzuki.

One of my favourite bikes Don, what were you doing, selling it? I had a minty T250 (deceased estate) back in the 90's, I reckon it would frighten the pants off a CB750 rider in the twisties! ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

Offline Kelly E

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Re: What did you do to your bike today ?
« Reply #27964 on: June 19, 2019, 10:33:54 pm »
I rode the 73' CB500 that I have been resurrecting for the last three months. It hasn't been ridden in over ten years but now everything works and it rides like a new bike.
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Offline Bankerdanny

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Re: What did you do to your bike today ?
« Reply #27965 on: June 20, 2019, 05:40:25 am »
Laid down the base coat on the tank and color on the side covers. Tonight and tomorrow will be the rest of the color and the clear.
"The problem with quotes on the Internet is that you never know if they're true" - Abraham Lincoln

Current: '76 CB750F. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki 80 (K11 probably, it's been 30 years), '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

Offline Don R

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Re: What did you do to your bike today ?
« Reply #27966 on: June 20, 2019, 09:07:43 am »
Broke it into pieces so it will fit on a pallet for shipping, well I really didn't break it. I spent a lot of time unscrewing things. T350 Suzuki.

One of my favourite bikes Don, what were you doing, selling it? I had a minty T250 (deceased estate) back in the 90's, I reckon it would frighten the pants off a CB750 rider in the twisties! ;D
Yes, it came with the 750A I bought. A fellow in Ca. 2600 miles away wants it and is getting shipping quotes. If he doesn't buy it for $100 taken apart. I'll Ebay it in pieces. He used to race a 250 and always wanted the 315 engine. My brother rode an X6 back in the day. His boss's son had it in college, they flew my brother to florida and he rode it back. Kept it here for a while, my first ride was on the back of it. Our mom turned gray watching us leave after my brothers near fatal bike wreck in Japan.
If the things you own end up owning you, it's better to be owned by some cool things.

Offline Jarrett_Honda

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Re: What did you do to your bike today ?
« Reply #27967 on: June 20, 2019, 10:16:52 am »
Inspected the brakes, carbs, cam chain tension, valves, wiring, cleaned and wiped down everything I could.

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Offline Tintop

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Re: What did you do to your bike today ?
« Reply #27968 on: June 20, 2019, 11:02:57 am »
Broke it into pieces so it will fit on a pallet for shipping, well I really didn't break it. I spent a lot of time unscrewing things. T350 Suzuki.

One of my favourite bikes Don, what were you doing, selling it? I had a minty T250 (deceased estate) back in the 90's, I reckon it would frighten the pants off a CB750 rider in the twisties! ;D
Yes, it came with the 750A I bought. A fellow in Ca. 2600 miles away wants it and is getting shipping quotes. If he doesn't buy it for $100 taken apart. I'll Ebay it in pieces. He used to race a 250 and always wanted the 315 engine. My brother rode an X6 back in the day. His boss's son had it in college, they flew my brother to florida and he rode it back. Kept it here for a while, my first ride was on the back of it. Our mom turned gray watching us leave after my brothers near fatal bike wreck in Japan.

My first new bike was a 250 X6 Hustler. and my only other 2 stroke was an RD350LC.
1977 CB550/4 Cafe - Speed Warrior / BOTM 03/11
1980 CB750F (project)
Whittaker GBF Vintage Racing Sidecar (XS750 power) - ITG / 151's / CMR Racing Products (SOLD)
1976 CB400 SS - stock / BOTM 04/11 (SOLD)
1973 CB750 K - basket case (SOLD)
77 CB550 Cafe build
550/750 Filter Thread
Sidecar Rebuild Thread

Offline Bankerdanny

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Re: What did you do to your bike today ?
« Reply #27969 on: June 20, 2019, 01:18:32 pm »
Yesterday I ordered a Nissin radial master cylinder from Parts Giant in Grand Rapids via Ebay, $139 shipping included. Today I received notice that it will be delivered today. That kind of service was worth mentioning
"The problem with quotes on the Internet is that you never know if they're true" - Abraham Lincoln

Current: '76 CB750F. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki 80 (K11 probably, it's been 30 years), '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

Offline Bankerdanny

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Re: What did you do to your bike today ?
« Reply #27970 on: June 21, 2019, 07:21:41 am »
Side covers cleared and blue laid down on the tank plus a couple intercoats of clear. Did have a minor setback when the tape I used to mask off where the stripes will go took off a portion of the basecoat and primer. The issue appears to be that a layer of glazing putty I had used in that spot didn't stick. I should be able to deal with it tonight though and get the gold down and do my final coats of clear.

I also installed the new right side control and the new front master. I need to hook up the electrics for the control, but I also have the HondaMan starter switch saver relay to install at the same time. The master is just on the bar, but I haven't added fluid and bled. That will be done tonight in-between coats of paint. By tomorrow afternoon the clear should be dry enough to put the tank back on and weather permitting ride up to Motoblot. I will take care of the wet sanding and buffing on Monday then hit the road Tuesday for 10 days finishing up at Mid-Ohio the weekend after the 4th.
"The problem with quotes on the Internet is that you never know if they're true" - Abraham Lincoln

Current: '76 CB750F. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki 80 (K11 probably, it's been 30 years), '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

Offline Don R

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Re: What did you do to your bike today ?
« Reply #27971 on: June 21, 2019, 08:08:39 am »
 Unstuck it and worked the cylinder off. A Shi tton of work
If the things you own end up owning you, it's better to be owned by some cool things.

Offline Stev-o

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Re: What did you do to your bike today ?
« Reply #27972 on: June 21, 2019, 08:27:43 am »
Broke it into pieces so it will fit on a pallet for shipping, well I really didn't break it. I spent a lot of time unscrewing things. T350 Suzuki.

One of my favourite bikes Don, what were you doing, selling it? I had a minty T250 (deceased estate) back in the 90's, I reckon it would frighten the pants off a CB750 rider in the twisties! ;D
Yes, it came with the 750A I bought. A fellow in Ca. 2600 miles away wants it and is getting shipping quotes. If he doesn't buy it for $100 taken apart. I'll Ebay it in pieces. He used to race a 250 and always wanted the 315 engine. My brother rode an X6 back in the day. His boss's son had it in college, they flew my brother to florida and he rode it back. Kept it here for a while, my first ride was on the back of it. Our mom turned gray watching us leave after my brothers near fatal bike wreck in Japan.

My first new bike was a 250 X6 Hustler. and my only other 2 stroke was an RD350LC.

My first bike was an X6 too.  I bought one last year...



And my RD.  Love the Smokers!!! The exhausts last forever...




'74 "Big Bang" Honda 750K [836].....'71 Honda 750K project.....'76 Honda 550F.....K3 Park Racer.....K5 Fiddy Dolla Special!......CB500 Fiddy Dolla Special too!!............plus plus plus.........

Offline Don R

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Re: What did you do to your bike today ?
« Reply #27973 on: June 21, 2019, 09:04:43 am »
No word from the buyer yesterday. I really didn't think shipping a parts bike to Ca. made sense. I'm betting he finds a bike shipper and wants it rolling again! I didn't know my brother repaired X6's at the Oldsmobile garage on weekends. They usually had second gear torn out. I think the owner sold Suzuki's next door.
If the things you own end up owning you, it's better to be owned by some cool things.

Offline Mark M

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Re: What did you do to your bike today ?
« Reply #27974 on: June 21, 2019, 09:29:24 am »
A first for me, I fixed my steering lock.

I can't remember ever having one before on a CB750, I was cleaning the bike when I noticed it still had one.
So I gave it a good clean through with WD40 and had a play with the selection of keys that came with the bike.
After much poking andf jiggling the lock freed up and I was delighted to discover the seat lock key matched.
Its a pitifull excuse for a lock, but adds to originality I guess.

In the UK anything over 40 years old only needs insurance and Fuel.

 

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