Author Topic: 78F New rear frame, seat, and tank stripe.  (Read 31248 times)

0 Members and 1 Guest are viewing this topic.

Offline Xxthegonzxx

  • Full Member
  • *
  • Posts: 57
Re: 1978 CB 750F RUNS!
« Reply #150 on: February 24, 2014, 07:46:42 PM »
I was running it tonight and a couple things happened that I'm curious about.

After the engine has been running, whether it be for 10 seconds or a couple minutes, when it turns off, I can hear a squirting noise coming from the head of the engine. Is this residual oil pressure squirting oil into the head, or is the oil flowing out of the head back down?

And also, when it was running, I would engage the choke a bit, maybe half a pull or so, it would back fire sending a blue flame out the exhaust. Open header I should say. Is this just because when it's on choke it is putting more fuel into the engine and it's just not getting burnt?


This could possibly be fuel mixture being too rich. You did say you're neighbor messed with the fuel/air screw right? Not sure about the liquid coming-out of the header/muffler. The only thing I can think of is possible mixture of oil/fuel? Not sure about  that one.

Offline krusty

  • Expert
  • ****
  • Posts: 791
  • There's no such thing as a garage that's too big
Re: 78F Running questions
« Reply #151 on: February 24, 2014, 07:54:50 PM »
It could be water if it hasn't been run up to full operating temp for long enough.
Honda
1976 CB750F1
1978 CB750F2
1972 CB350F
1961 C100 Cub
1962 C100 Cub
1959 C76
1963 C92
1964 C95
Suzuki
1963 M15D 50cc
1961 250TA Colleda
1961 250TA Colleda x 2 primed ready for paint and assembly
Yamaha
1977 DT175E x 2
1978 DT125E
1979 DT125F
1976 DT250E
1978 DT250G
1984 FJ1100
1990 FJ1200

Offline apetersonboy

  • 1978 CB 750F SS
  • Enthusiast
  • **
  • Posts: 248
  • Slow and not very steady.
Re: 78F Running questions
« Reply #152 on: February 24, 2014, 08:43:10 PM »
Thanks for the replies guys, much appreciated.

Offline apetersonboy

  • 1978 CB 750F SS
  • Enthusiast
  • **
  • Posts: 248
  • Slow and not very steady.
Re: 78F Running questions
« Reply #153 on: February 27, 2014, 08:26:52 AM »
Made a bracket to mount my gsxr master cylinder. Haven't tested to see if it works or not.


Sent from my iPod touch using Tapatalk

Offline apetersonboy

  • 1978 CB 750F SS
  • Enthusiast
  • **
  • Posts: 248
  • Slow and not very steady.
Re: 78F "Shonda"
« Reply #154 on: March 03, 2014, 07:48:49 PM »
Today I put on my slingshot brake lines and all new crush washers. Also put on a huge chrome exhaust tip for a truck that I never ended up using for what I bought it for. It looks a little ridiculous but I think it's perfect.

Tomorrow hopefully I will get the brakes bled without any major hiccups.

TO DO LIST
Bleed brakes
Tighten chain
License plate illumination light
Get inspected, tag, insure
ride!

Offline apetersonboy

  • 1978 CB 750F SS
  • Enthusiast
  • **
  • Posts: 248
  • Slow and not very steady.
Re: 78F "Shonda"
« Reply #155 on: April 21, 2014, 04:20:43 PM »
Took Shonda on her maiden voyage. Went great except I ran out of gas a few miles away from my grandparents house to show them the bike. I pushed it to the nearest farm and the farmer generously took me into town to get some gas. Got the bike filled up but then found out the battery was to low on charge to turn the bike over. We charged it up enough to get it to start and I went back home.

Took another trip today, this time with a full tank of gas. I rode out to the families farm to use the grease gun to finish greasing up my swing arm bushings.

After about an hour or so, I got on my bike to leave. When I tried to start it the battery was barely turning the motor over. I kick started it and went on my way.


Charging issue?
About halfway home the bike started running rough, like it was missing a cylinder. I opened up the throttle a little and the bike sputtered and refused to rev any high than it currently was struggling to do. By the time I got back home it was barely running. I don't know if it was for sure or not but it felt like it was running on only two cylinders. Just barely staying alive. I coasted into the shed and as soon as I let it idle, it died. Tried starting it, but the battery was so dead that it could even light up my speedo.

Am I correct in guessing this is a charging issue?
One thing to note is that my blinker was left on pretty much that entire trip, so would that have anything to do with running the battery down? Thanks for any input.


Offline apetersonboy

  • 1978 CB 750F SS
  • Enthusiast
  • **
  • Posts: 248
  • Slow and not very steady.
Re: 78F Charging Issues?
« Reply #156 on: June 05, 2014, 04:26:21 PM »
New rear frame and seat pan (off at the upholsterer.) It is a two up seat that will be black leather with red stitching.

New muffler, I got pulled over the first day in town for not having one. I have the carbs apart right now to rejet.

I was wanting some more get up and go from the bike so I did this tonight: I think it turned out pretty nice looking for cheap spray paint.

New r/r unit solved the charging issue.

Other than that not much has changes on the bike. The rear right side bearing retainer backed itself out and destroyed itself along with some of the threads in the wheel. Luckily I got the threads back to somewhat usable condition with a thread chaser and got a new retainer in. Really hoping that doesn't happen again!


Sent from my iPhone using Tapatalk