Back in the motorcycle saddle again...

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Re: Houston, we may have a problem.

mikey440
 ive read a lot of posts about this subject and alot of members use the intank filter along with 2 inlines
 these carbs have to stay so clean as to work right, cant put enough emphasis on this, cant hurt...
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Re: Houston, we may have a problem.

LukeM
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Point taken.  I'll get some kind of filter in there somehow. Thanks for the post.

Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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Re: Houston, we may have a problem.

Re-run
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This post was updated on .
There must be a good amount of room between the carbs and petcock on the dohc. On my 78k, you get 5 inches and that is with bends. Part of it is that the petcock nipple does not point towards the carb nipple and so a bend is unavoidable. I used an inline and you shoulda seen the ends on that thing bend as it was used. Waiting for that sucker to crack.
Dont get me wrong, I am not against inline filters, not in the least. I have used them before. just so long as you make sure you get one that allows a high enough rate of flow so you dont starve the carbs.
I just ended up using an intank and it has worked perfectly. At least for me anyways! Results may vary
The ride IS the adventure. The destination is just to get gas!
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Re: Back in the motorcycle saddle again...

vern401
In reply to this post by LukeM
That is the alternator on the left side. Yes oil in there is ok. Both tires you mentioned are good. Does it mainly smoke when first started or does it smoke all the time?
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Re: Houston, we may have a problem.

vern401
In reply to this post by Re-run
with the old bikes rust may also be a factor to think about. I tape a strong magnet to the side of my inline filters to help in keeping any possible rust from clogging up the filter. Some real fine powder rust can get past a filter "somehow" and still get into the carbs. the magnet helps in stopping this from happening.
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Re: Back in the motorcycle saddle again...

Piute
This post was updated on .
In reply to this post by LukeM
 keeping in practice yours was hard but always learning(why I do them)



     
                            1977 CB750 F2 Super Sport
<LET THOSE WHO RIDE DECIDE><RIDE TO LIVE-LIVE FOR JESUS> 
Native American from central Cal,  Kickstand UP in S.W.Missouri,
                                       
 
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Re: Back in the motorcycle saddle again...

LukeM
Administrator
I like that even more.  :-)  Nicely done.

By the way, your name changed to just Piute.  If it's not too personal a question, may I ask what became of Judose?

Luke
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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Re: Back in the motorcycle saddle again...

Piute
   He's still here ,

his buddy Willie




just had some one looking to find me on this sight and trying to make it simpler. She's a blond planed on cutting back on this sight,butt ? well her's meeting her Saturday if you wont personal
                            1977 CB750 F2 Super Sport
<LET THOSE WHO RIDE DECIDE><RIDE TO LIVE-LIVE FOR JESUS> 
Native American from central Cal,  Kickstand UP in S.W.Missouri,
                                       
 
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Re: Houston, we may have a problem.

Half-Caf
In reply to this post by LukeM
Hey, Luke. Just say this thread pop up on the home page and read through the whole thing. Always good stuff on here!
I was wondering if you ever found out what what causing your fouled plugs and leaky cylinders. I am having this problem as well and am finding hope that it might just be dirty carbs.

LukeM wrote
There is some wet discharge (npi) on the #4 plug, and some out that exhaust as well.  Looks almost like liquid graphite. Thanks for the input, Re-Run.  I was thinking of going the Seafoam route, but if the carb has some crud buildup, it's probably teardown/rebuild time.

Luke M
Good to hear your story and see your back enjoying bikes again!
The best things in life are custom
Youtube: http://www.youtube.com/user/halfscb
1980 cb750f SS
Chicago, IL
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Re: Houston, we may have a problem.

Piute
  Sorry there Luke was the only good pic of your bike ,
by the way yer right 1/2 cafe is a great story


                         still working on between app.s

                            1977 CB750 F2 Super Sport
<LET THOSE WHO RIDE DECIDE><RIDE TO LIVE-LIVE FOR JESUS> 
Native American from central Cal,  Kickstand UP in S.W.Missouri,
                                       
 
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Re: Houston, we may have a problem.

LukeM
Administrator
In reply to this post by Half-Caf
Well, it is a long story, so I'll give you the Reader's Digest version.

I cleaned the carbs several times, and got them all set. I think the #4 plug was a victim of leaky valve seals.  Oil was getting into the cylinder and burning off, once the plug got hot enough.  It was running on essentially 3.5 cylinders.  In August of last year, while riding home from my doctor's office, the cam chain between the head and the crankshaft snapped.  Not sure if it was due to bent valves, or just the chain losing all its tension.  It would have cost about $2000 in parts and labor to rebuild it.  The mechanic kept finding stuff that should be replaced as we dug deeper into the engine: crank bearings, rod bearings, 2 each intake and exhaust valves, rings, seals, gaskets.  Basically an engine overhaul.

So, rather than fix it, I found a local guy who was rebuilding his own DOHC 750, and sold him everything for about what I had in it.  So I got back some bux, he got essentially a whole parts bike, and in January 2011 I bought a 1984 Honda VT700c. I put about $250 into it (new tank, pieces parts, and some labor to get the jellied gas out of the carbs), and I've been running it ever since.

Not sure if that answers your question or not, but that's what happened.  
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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