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Messages - royhall

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3241
CB750 / Re: cb750f2 frame.
« on: June 17, 2014, 09:33:07 PM »
Thanks for the reply Paul. Yes I would be interested in the frame, not bothered about the registration number as long as it comes with a correct year number. Any idea how much you want for it, and could you send a couple of pictures. I am assuming all the other tabs etc are still in place and it has no crash damage or anything. Not bothered about the paint finish as it will be stripped and painted as original. Cheers Roy.

3242
CB750 / Re: cb750f2 frame.
« on: June 15, 2014, 05:13:05 PM »
Yeah spotted that frame whilst searching this morning. Looking at the picture from the rear, it looks fairly bent. Think I shall keep waiting for now, need a good one that will steer straight. Thanks for your replies though. Keep them coming. Cheers Roy.

3243
CB750 / Re: cb750f2 frame.
« on: June 15, 2014, 09:27:45 AM »
Thanks Mick. Been watching ebay for a while. Just one frame on there that looks like the breakers cut the right down-tube to get the engine out, then tack welded it back in. Been burned before with gear like that, so was hoping somebody on one of the forums would be able to help out. Much more trustworthy people on here. Problem is the F2's frame is unique and not interchangeable with the F1 or any of the K's, so not very many around. Thanks anyway, will keep looking.

3244
CB750 / cb750f2 frame.
« on: June 14, 2014, 06:00:04 PM »
Just started on an F2 rebuild on a bike I bought as part of a job lot some months ago. Unfortunately it appears this bike has had a smash and has been very badly repaired. The frame is really a write off. Does anybody have a spare F2 frame with V5 they would consider selling. Other than that i may be selling off a whole bikes worth of parts. Would rather fix it though. Thanks guys.

3245
CB750 / Re: Gearbox whine and clutch rattle
« on: May 27, 2014, 03:47:33 PM »
Okay thanks for all the replies. Will check clutch this weekend then give it a run for a few months. See if anything happens. Many thanks.

3246
CB750 / Re: Gearbox whine and clutch rattle
« on: May 26, 2014, 10:09:28 PM »
Yeah fairly sure its gearbox, its not a really noisy whine just kinda there if you know what I mean. Nothing seamed amiss with the cycle parts when I went through it all. Have had both wheels off the ground and done a fair bit of pushing and pulling looking for worn bearings/bushes. Only thing appearing loose were the head bearings and I have sorted that. Will check out your suggestion though just to make double sure. Carbs are carefully balanced, took ages over it and got it almost bob on. Didn't change the clutch noise at all. Clutch noise does calm down some when its hot. Think I will pull it next weekend just to make sure, talking to the previous owner he didn't fill me with confidence about his knowledge or abilities. Thanks all.

3247
CB750 / Re: Gearbox whine and clutch rattle
« on: May 26, 2014, 09:33:08 PM »
Thanks for that. The oil that came out of it was jet black so I ran it through a filter paper to check for glitter, found nothing in the oil or the oil filter. When I pull in the clutch lever the clutch noise stops almost completely and no other noises from the engine are apparant (not even cam chain strangely). Was a whole lot more concerned about that gearbox whine. Your correct about me being new to Honda's, have spent all my time with Kawasaki Zeds, and they are the quietest clutches ever made so it was a bit of a shock. How loud should the transmission noise be? Thanks for your help.

3248
CB750 / Re: Gearbox whine and clutch rattle
« on: May 26, 2014, 08:19:14 PM »
Thanks for the reply. Done the full thing on the bike ie. carb clean and rebuild (full apart and ultrasonic), oil change and filter, air filter and new filter trumpets, new plugs/points/condensers, set the tappets, checked and set cam chain tensioner, strobed the ignition/checked advance, balanced the carbs/set slow running mixtures with shop tacho, and many more check and repairs. Mileage is about 29000 miles. The whine is in all gears, but more noticeable in first and second. Not too worried about the clutch just yet as I haven't pulled it out for a check over, will try to do that next weekend. The bike is an F2 and I suspect it may have K series plates in it. If it has could be an easy fix will see at weekend. Much more concerned about the gearbox thing though as that could be an engine strip jobby. Not what you want just coming into summer. Cheers.

3249
CB750 / Gearbox whine and clutch rattle
« on: May 26, 2014, 07:35:51 PM »
Hi all. Just bought an F2 sohc that's been standing for about 4 years. Wasn't running when I bought it so did not get the chance of a test ride (price was very good so took a chance). Been through it all and it now runs very well, in fact will pull to the redline without missing a beat. Now the problem I could use advice on: the big one is when riding it there is a noticeable whine from the gearbox. Never having owned one before could somebody let me know if this is normal or maybe a gearbox bearing or something. It goes into all the gears really well, up and down the box and finds neutral okay. The other noise is the clutch at tickover. It is very rattly although it is adjusted correctly, and work well. These noises are unnerving and I wonder should I be using the bike as it may be causing damage. Any help would be appreciated. Cheers.

3250
CB750 / Re: Cylinder 2 not running (CB750F2)
« on: April 19, 2014, 06:53:51 PM »
Thanks guys. Compression is okay, and got a good spark. Have completely stripped the carbs, cleaned as best I can with copper wire/carb cleaner/compressed air. Have now sent them off to be ultrasonic cleaned. All I have to do now is figure out how the hell to put them back together again. Watch this space for a call for help sometime soon. Thanks again.

3251
CB750 / Cylinder 2 not running (CB750F2)
« on: April 18, 2014, 05:02:31 PM »
Can anybody give me some pointers about cylinder 2 not running (CB750F2),  have run out of ideas. Bike has been stood for a number of years. Have cleaned the carbs (although they were clean already), have replaced the float valves and set float heights (not sure if I have done this right as the manual does not even mention it), replaced the accelerator pump diaphragm, fitted new plugs etc. Engine fires up on the choke but cylinder 2 stays cold, does not cut in on higher throttle either. No.2 spark plug does not appear to be wet with petrol. Any ideas where I go from here, its bumming me out carbs have been off over and over. HELP!

3252
CB750 / Re: Carb repair kits for CB750F2
« on: April 12, 2014, 09:21:01 AM »
Hi Mick. Yes I do go to Knott End but only rarely. The problem is I only live about 3 miles away so hardly worth getting the bike out, not really a run out. Also working away during the week quite a lot. We usually go up to Devils Bridge, which isn't much of a run out for you. I am at present restoring a CB750F2, I also have a rideable F2 (up for sale soon), and a modern CB1300. May see you at Knott End, let me know if your going you never know I may actually be local. Cheers.

3253
CB750 / Re: Carb repair kits for CB750F2
« on: April 07, 2014, 07:57:55 AM »
Thanks for the replies guys. Unfortunately David Silver did not have them, says they cant get hold of them at the moment. And Sirius is a bit too expensive for my budget at 250 dollars for 4 kits. Have found a guy in Japan that says he has kits for  the 1977 K7 model that are okay for the F2. Not sure about jet sizes though. Any advice you can give me would be a great help. Many thanks.

3254
CB750 / Carb repair kits for CB750F2
« on: April 06, 2014, 11:07:12 AM »
Hi. New to the forum so hello to everybody. Not used the forum before so forgive me if I post wrongly. Will soon get the hang of it. Quick question, am trying to get 4 carb repair kits for the CB750F2 (1978) as you probably know they are listed as unavailable. I can get a kit for the 750K that looks the same, but there are two different ones, the 77 & 78. will either of these kits do the job. Many thanks.

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