Topic: N.W. Arkansas Vintage Breakfast Club

[Roach Carver]

If I can, i always get it to run first. Youll need a good set of carbs. Set the valves ans points amd confirm that theyre good. Twelve volts to the coils and you should be able to get it running. Dont forget the oil.

[Tazergnome]

I've got the carbs, they're just off to be cleaned.

I've been told about replacing the points with a solid state system and mounting the front brake calipers behind the forks.
Are there any other worth while tweaks or part upgrades that I should look into? (I know that's a major subject to get into, just looking for opinions or links)

[Tazergnome]

I did not read all of the pages, but from what I got out of page 1, I think you should give strong cosiderations to find an old RC Engineering (Russ Collins) header and muffler.  That is THE best sounding exhaust on a CB750 bar none AND has the approz physical dimentions you requested.  I have one.  It is NOT for sale, and I don't have any pics of it right now.  I will have to look inot my old RC literature, but I think it was called something like a Scavenger or something.

This is pipe that I have?

[Roach Carver]

It is a russ collins i think. Probably rusty from the header tape. Dont move the caliper to the backside of the forks. No real benefit as far as im concerned. I also use the points. If you know how they work they are no problem and theyre cheap.

[Roach Carver]

Sooooo, got the sl 350 running                          on one cylinder it seems, but it does run and I bet the other cylinder will combust gasoline as well. I think I need a new coil. Any of you 350 guys have one I can borry to try? If not, no problemo. I will just get one on ebay.
BTW, I have never done such a haphazard job of resurecting a bike. I made sure there was oil in it. Pulled the bowls and dumped about a half spoon full of dried up crap out, ran a wire up the slow jets and couple squirts of carb cleaner up the slow and main, gas in the bowls, 12 volts to the coils(no key), choke on and voila, she runs.

[captain awesome]

Sooooo, got the sl 350 running                          on one cylinder it seems, but it does run and I bet the other cylinder will combust gasoline as well. I think I need a new coil. Any of you 350 guys have one I can borry to try? If not, no problemo. I will just get one on ebay.
BTW, I have never done such a haphazard job of resurecting a bike. I made sure there was oil in it. Pulled the bowls and dumped about a half spoon full of dried up crap out, ran a wire up the slow jets and couple squirts of carb cleaner up the slow and main, gas in the bowls, 12 volts to the coils(no key), choke on and voila, she runs.

I've got a handful. Not all of them are good, but I'm sure I could get one extra good one out of the batch.

[Roach Carver]

Im gonna fiddle with ot some more. I have twelve volts.to both points and they are switching on and off. Ive never encountered a bad coil on my cb750s so this is new to me. Is this common on the 350's?

[captain awesome]

Im gonna fiddle with ot some more. I have twelve volts.to both points and they are switching on and off. Ive never encountered a bad coil on my cb750s so this is new to me. Is this common on the 350's?

The 360 I got from Patrick had a bad coil, and one of the extras I had to replace it was bad as well. The only thing I did to check it at the time was check for a good spark on that cylinder. Not sure if this is common or not though.

[wixil]

Kudos on having another runner, Brad.  That bike is going to be a hoot I bet.  I would give Derrick a hard time for working on his VW instead of his CL this weekend, but all I did was make a mess:



and go fishing to test out my lil' boat:

[Roach Carver]

that looks pretty good. I am concerned that you took the pic from so far back. Is it lumpy or something? What are you trying to hide

[wixil]

Yes.  Lumpy is a good descriptor

[captain awesome]

Kudos on having another runner, Brad.  That bike is going to be a hoot I bet.  I would give Derrick a hard time for working on his VW instead of his CL this weekend, but all I did was make a mess of my pants.

I didn't get to work on anything really. Friday I did get some finish welding done and snapped a couple pics though. I was out of town Friday evening and Saturday, so no time to get anything done or posted up. The wife leaves again for Ohio today, and won't be back till Friday so daddy daycare is in full swing again. When the little one goes to sleep I may be able to get some fiberglass work done, but who knows.

[wixil]

[I didn't get to work on anything really. Friday I did get some finish welding done and snapped a couple pics though. I was out of town Friday evening and Saturday, so no time to get anything done or posted up. The wife leaves again for Ohio today, and won't be back till Friday so daddy daycare is in full swing again. When the little one goes to sleep I may be able to get some fiberglass work done, but who knows.

My bad.  I just saw the updates about the Ghia carb and hit the ol' jump to conclusions mat. 

[captain awesome]

[I didn't get to work on anything really. Friday I did get some finish welding done and snapped a couple pics though. I was out of town Friday evening and Saturday, so no time to get anything done or posted up. The wife leaves again for Ohio today, and won't be back till Friday so daddy daycare is in full swing again. When the little one goes to sleep I may be able to get some fiberglass work done, but who knows.

My bad.  I just saw the updates about the Ghia carb and hit the ol' jump to conclusions mat. 

No worries. All of that was done before we had our last meat. Hopefully I can get something, anything done this week while the wife is out.

Do you want me to put an update for you on the site?

[wixil]

 

No worries. All of that was done before we had our last meat. Hopefully I can get something, anything done this week while the wife is out.

Do you want me to put an update for you on the site?

Nah.  Doesn't feel like I really accomplished anything of importance.  I'd rather wait until I get the seat looking like something.  I did sit on it when the second round of resin dried, and it didn't crack.  That's a good sign... But it's seriously ugly as sin currently. 

[Tazergnome]

Ok, so I got some more pictures.
http://s1172.photobucket.com/albums/r567/Mgbeaver/1975%20CB750%20SS/?albumview=slideshow
(same slideshow as before but with the added pictures)

I got some good shots of the wheel problem. Advice more than welcome.

The electrical system looks like a mess.

Since it has an extended swing arm I was thinking I can use the space in front of the wheel for a tool box or something. (shown in a picture)

I got a few pictures of the header pipe where it comes into the tail. I'm wondering if the headers match the RC tail pipe. There seems to be a bit of wiggle in the connection like the tail piece is slightly too big. (missing gasket or something?)

Maybe it's just me, but that head doesn't exactly look stock.

I got some better pictures of the head.

Idk. The valve cover isnt modified? Kind of interesting. Needs to come out anyway. Id pull it and take a peek at the cam. The other oddity is its an f from what i can tell. Is it a 76??are the case numbers close to the frame numbers?

The cover looks normal to me...but that's not saying much.

The numbers are:
Frame:CB750F-2001653    Made:4/75
Engine:CB750E-2518237

I've got an engine off a stockish 75 K5. CB750E-2511262
Is there any difference between the engines or was it just the styling?

If you take off the valve cover take a pic of the cam gear from the side and the valve spring retainers. You may have some good parts there. Or you may have a thrashed motor. Hopefully its good.

Will do. I think I'm going to just recut the bars. They did a sloppy weld on them. Is there a better way wo make them removable than the sleeve things? I want a way to remove them and put them back easily while still making them secure.

I was talking to my dad about the bike. He pointed to the goldwing frame sitting in fount of the shop and said I might adapt it to use the 750 engine...at first I though it was a stupid idea..allot of work and a heavy frame. The more I looked at it though it seemed like an interesting idea. I'm not going to do it, but it's interesting. I have been eyeing the forks from it though. I think I've heard of them being swapped in. They seem longer though.

If I say or ask anything stupid just remember first bike, first build.

[Roach Carver]

The forks are longer. That is a common swap though. That all i would use from it though. Look up gordon frame lit on here. Thats what yo want I think. Personally, I would just scrap the frame. I dont like stuff like that to be jig rigged.

[captain awesome]

This is just my opinion, but that frame is probably tweaked, and that swingarm is likely to be tweaked as well. Only way to tell would be some measuring, but I would just start over with a good straight one and save yourself the trouble.

[Roach Carver]

This is just my opinion, but that frame is probably tweaked, and that swingarm is likely to be tweaked as well. Only way to tell would be some measuring, but I would just start over with a good straight one and save yourself the trouble.

+1

[wixil]

I got a few pictures of the header pipe where it comes into the tail. I'm wondering if the headers match the RC tail pipe. There seems to be a bit of wiggle in the connection like the tail piece is slightly too big. (missing gasket or something?)

Looks like there is a clamp missing.  It looks like the right size.  The O.D. on that stock header is massive.  One of us would probably be more than willing to relieve you of the RC muffler if you decide you don't want it. 

[captain awesome]

The forks are longer. That is a common swap though. That all i would use from it though. Look up gordon frame lit on here. Thats what yo want I think. Personally, I would just scrap the frame. I dont like stuff like that to be jig rigged.

+1

You beat me to it.

[wixil]

Brad, wasn't sure if you'd already spotted this or not, but someone's got a mess of BMW parts on the ebays within a reasonable distance ...

http://cgi.ebay.com/ebaymotors/1976-R90-R75-R60-parts-motorcycle-/170797892137?pt=US_motorcycles&hash=item27c4590229

[Roach Carver]

thanks for the heads up. that stuff may be too far gone even for a moron like me.

[wixil]

No problem. Just seemed like a good lot of squirreled away parts in one spot.

[Roach Carver]

Yeah Thanks!! I am watching it and I might bid on it. I know I shouldnt though. There are a lot of parts there but by his own admission the transmissions need to be rebuilt and thats at least 400 to have done and is not a shade tree mechanic job. IDK, we'll see.