Topic: Bringing a CB750F1 back to life after 25 years

[BeSeeingYou]

deleted

[Porscheguy912]

nice.
It looks exactly like macm2010's bike that we are rebuilding.

Keep us posted!

[Grumpol]

That is a bloody nice looking bike, considering its been in storage for that long a good clean of the tank and carbs and (as long as it hasnt seized) a tune up and you will have a great bike for a great price.

[Hush]

$500 you bludy thief!

[Grumpol]

  The only bummer so far is a nickel size hole in the underside of the otherwise nice muffler. 

Easy enough to fix with little showing, you lucky bastard

[benly- ben]

wow!!
sam bought a benly crankcase for $700 quite a rare one he tells me.
Ben

[750goes]

they  sure do

and just to make sure you know what a bargain you got

bloody thief (good luck to you - hope your neighbour wants it back )

 

[BIKE]

Wow. $500!   

[RM81]

What a deal.  Make sure you don't show it to them when you're finished restoring it.  Doesn't look like you have a whole lot to do on it though.  They might want it back.

[750goes]

Yes, the yellow dabs of paint were factory applied

but some old style dealer/mechanics used the same system when they did service work - just to make sure the owner did not mess with their work once it left their posession..

[frodef2]

I just love the look of the F1 with the original exhaust. My F1 had a rotten exhaust on it when i bought it so i bought a 4 to 2 benjie exhaust. I'd trade it for a original exhaust in a hartbeat tho.

Frode

[fuzzybutt]

i HAVE a nice original muffler from an f0. heavy bastid so i bet it wouldnt be cheap to ship.

[Jerry Rxman Griffin aka MuthaF'er]

Wow, great find! Take care of that beauty. The tank in that condition is worth what you paid for the bike.

Couple things:

The new battery might solve the turn signal flasher problem if it's happening at slower speeds. I use my turn signals to gauge the charge level of my battery.

Those "new" blued double walled pipes. My pipes did not blue after 25,000+ miles. At first I thought that maybe you had some single walled pipes and just needed to richen up the carbs some. That was until I saw the original pipe. Now I feel almost certain you are running lean, perhaps real lean. Just be careful and don't put many miles on it until you get it correctly tuned then do a plug chop at the different rpm ranges and read those plugs. You may still need to do the carbs. What size jets are you running? What is the needle clip position? Did you install a new air filter? Definitely check the valve clearance too.

Enjoy that bike!!     
 

[Jerry Rxman Griffin aka MuthaF'er]

Sounds like your carbs are stock.

Describe what the lean plugs looked like. The old sooted plugs might have just been from a bad battery.

Clips should be in middle position third notch. What size slow jets? Book says 40. Air screw setting 1 +/- 3/8. Fuel level 26mm. Rechecking the float level is a good idea.

What kind of polish did you use? Could be the culprit. I've used stuff to remove blue but don't think I've ever polished the pipes so I can't say with any certainty about that.

[Jerry Rxman Griffin aka MuthaF'er]

My plugs look like that (when they are new)  Sounds like you're almost there. You might even consider bumping up a jet size or so once you're confident all the setting are right. 

I have an old fairly large Vetter Ghost flexiglas shield. Hasn't been made in a log time. I can remove or install fairly quickly. Only downside was when the left arm came loose, slid down, and put a fairly large gouge in my paint. I now take evasive maneuvers by taping it. You could consider something like that (minus the gouge part). I wouldn't install it unless I'd be on the road with it for lots of miles and/or the weather was bad. No way for local.

[Jerry Rxman Griffin aka MuthaF'er]

As far as tires go you can get as many ideas as shhhh (oil). I've been using Bridgestone white letter Spitfire 11's front and rear for quite a while. I don't knee drag but I often go fast in a straight line. Look nice too. May not be able to get white letter anymore. Mileage is decent until you start spinning the rear.  I do get more miles on my rears these days than before. They feel fine and stable. Seem OK in what little wet I get them in. Size wise I'll have to check tomorrow. I'm using 120 on the rear and 100 on the front I think. 

Those vibro-massage seats can be hard on old guys hemorrhoids I hear