Hi there new member from Wales UK

[easym5]

Hi i have just bought a 1976 cb 750 F1 a bike i have always liked ever since they appeared in 69,i was into my triumphs /tritons at the time and they were out of my price range way back then
I am a retired mechanic so no problem rebuilding as i have built many bikes over the years the last one being using a 1946 rigid triumph frame with 750 unit motor and harley forks/wheels
Want to keep it fairly standard but want to change air filter for 4 seperates and if i can find one cheap enough a 4 into 4 exhaust,anyway looks like a brilliant forum for 750s am looking forward to chatting with everyone and picking up some tips etc regards Chris
A few photos i am amazed at the condition of this bike as it has only 17000 miles 2 owners and hasnt run since 1998

[TOOLS1]

Welcome. That is a great find, you have there.
TOOLS

[pat english]

yeah that things in good shape..what are youre plans for it other then the 4 into 1 and pods?

[shinyribs]

Dang! You can still see the yellow paint markings on it from when it was built at the factory! Nice bike man,real nice! I doubt that bike has ever had the first screw removed from it.

Welcome,and enjoy. I know I would

[easym5]

Thanks guys yes i am well pleased with her, started stripping carbs down today and theres a nice coating of varnish everywhere so will have to soak them in cleaner
I dont think anyone has put a spanner to her for a long time,tried a new battery and everything works,not going to start her but motor turns over fine,stuck a long screwdriver in oil tank and theres thick sludge in there so im just going to strip everything
Will keep you posted regards Chris

[Re-run]

Very nice ride there. nice easy rebuild on this one. It even has some decent Hagon shocks it looks like!

[Hoko]

Wow!  That definately sat in a garage for most of its life.  

[easym5]

Well managed to drop the motor out by lifting the frame off it,ferk of a job (on my own) think i will drop the bottom end in and build top end whilst in the frame when i come to rebuild her
Am going to paint frame by hand as theres some good products out there now,anyone have any recommendations on paint brands/products ?
Electrics look ancient are there any upgrades that people do ? Thanks guys regards Chris

[TOOLS1]

If, you are going to install the top end on the engine with it back in the frame, then, you are going to have to cut off the two tubes that go over the engine. And since, you are going to need to cut them off, for that, you may as well cut them off, so there will be more room to install the engine, and go on, and build it on the stand.
However I have to ask why are you rebuilding it? Have you checked the compression? Is it locked up? Does it make noise? These engines are capable of at least 100,000 miles with out needing a rebuild.
For the electrics, whats wrong? Has the wiring harness been chopped? If not, just clean it up. You can clean the terminal ends with a small wire wheel on a Dremel tool, If it has been chopped, there are new replacement ones on the internet. vintagecb750.com has them.
TOOLS

[shinyribs]

Tools is right. The electrical bits on these bikes dont look very hi-tech,but they do work. And pretty reliably ,it seems. Sma thing for the motors-they're tough.The connectors do get corroded and that is where most of the electrical problems arise. If you cant clean up the connectors,you can replace them. Either with original style fittings,or even aftermarket weatherpack or Molex connectors. Wethaerpacks are sweet,but Molex's are much more compact.

Give a try,you just might find that everything works just fine!

To answer your question,oregon cycle sells a solid state regulator/rectifier unit. Others may too,but I know guys on here seems to like theirs. Personally,I'm still using my original stuff.

[Piute]

  Very nice find Welcome
I just replaced the exsposed pluggs like,all under the side cover,one from stator I just changed the brass conectors,(they were rusted)now all mine worked but some looked brittle,Last I changed the ignition (cause it mest up inside).Have fun,cause there great t ride too.

[easym5]

Hi Guys glad i posted about engine as i didnt know you cant do a top end overhaul with it in the frame so thanks for that,i am just naturally curious as to what makes engines tick and was only going to strip it for fun really,as said its only got 17000 on the clock so i will just pump some clean oil round the crank etc whilst its on the bench (this is possible just connecting inlet side of oil tank up and turning over on the kickstart and let the old oil out of the disconected return pipe yes) ?
As for the electrics i am a great believer of if it aint bust leave it alone, i have read that some people change the reg/rectifier out and put on electronic ignition but if you guys say its not necessary thats good enough for me
The only thing really that i am going to do to the motor is fit stainless allen bolts all round as its a nightmare trying to get the philips type screws/bolts out without them rounding off
Thanks for your input guys saved me a lot of time and trouble,glad i found this forum
Dont know if anyones interested but heres a few photos of my last build the 1946 triumph well sort of lol
Have a nice rebuild of a yamaha R1 if anyone wants to see a few before and after photos ?

[TOOLS1]

That's is one pretty Triumph! Shiny is going to want one now. Back to your Honda. Just remove the oil pan drain bolt, and let the old oil drain out. There is no need to try to flush it. You would never get it to pump enough with the kick starter anyway. If your really worried run some "Sea Foam" through it after, you get it running. If you really want to do some tinkering, you could replace the gaskets, and seals. Most can be replaced with out tearing the engine down.  The hardest ones would be the rubber nickels under the cam towers. They cover the head bolts. When they leak oil starts coming out the fins, and a lot of guys think they need a head gasket. Replacing these is not hard, but does require removing the camshaft. Also this, and the valve cover can not be done with the engine in the frame, so now would be a good time.
TOOLS

[shinyribs]

Dang. Thats a sharp looking Triumph! Yeah,Tools called it right,I'd love to have one. Just not sure about the shifter being on the wrong side

[easym5]

Finished putting the last coat on today as the weather was nice,used smooth black hammerite hand paint that has worked well on a couple of other bikes, i was going to spray her but works out a lot cheaper this way.So now i can tick this off the list of things to do lol

[Piute]

                                           Frame looks great

[shinyribs]

People never used to believe me when i told them that I hand painted my roll cages with a brush. I think it makes an awesome,very thick paint job.Good job man! Looks great!

[rrgunslinger]

Nice start easy, Looks like you have the skills to do this top notch!  

[easym5]

Thanks guys am in process of changing all the slot head bolts/screws for stainless allen head bolts and wow what a difference they suit this engine,stripped and cleaned the clutch plates and assembly,and they all look ok which is great,am really enjoying this probably as much as i will enjoy riding it regards Chris

[easym5]

Hi guys well have finished all the cleaning/painting/polishing so am starting to get her back together tomorrow,i have carbon skinned my side panels better than black paint what do you think ? Will post my progress cheers Chris