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Messages - Phil9886
1
« on: June 24, 2023, 05:45:40 PM »
Hi. I've seen a couple of different dimensions listed for CB750 float heights (maybe because they are different for different models). Can anyone let me know the correct height for the CB750K6? I will be measuring from the small ridge inside the channel for the bowl gasket to the top of the float just as the needle valve closes - correct? While I'm here - is 2 turns out for the air screw a good place to start? Many thanks. Phil
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2
« on: May 26, 2022, 10:09:37 AM »
Many thanks for the quick reply. If you can give me access to the Honda manual wording that would be really helpful. Thanks. Phil
3
« on: May 26, 2022, 09:53:47 AM »
Hi. I recently got my CB750 K6 back on the road again after a full carb strip / clean / carb kit and rebuild. The bike runs fine and out on the open road I have no problems. However I let it run at about 4000 rpm for about 15 mins stationary and whereas the two left hand pipes were fine the two right hand started to blue slightly (first 6”). So that means 3 & 4 running lean correct? So which way to turn the screw to make the mixture stronger? Thanks. Phil. (PS. I realise was probably a mistake to run at a standstill at higher revs but what is done is done - won’t do it again).
4
« on: September 11, 2020, 07:15:29 AM »
Oh - that explains it. Thanks for letting me know. Wow - £1000 per pipe for originals! I guess someone with too much money will pay. But that is pretty outrageous. By the way - I'm just about to send my barrels and cylinder head off to Graham for overhaul. I heard he's the best! Kind regards. Phil
5
« on: September 10, 2020, 09:14:01 PM »
Hi Julie. Are they original Honda 341s? I just had a look on CMSNL and couldn't see a set for sale under the K2 parts list for the exhaust system. Not even after market versions. Do I need to look so where else on their website?
6
« on: July 25, 2020, 06:26:48 PM »
Quick question regarding the correct setting for the air screws on a standard UK CB750K6. Bike starts and runs perfectly with the screws 1 turn out. But have read somewhere that they should be 1.75 turns out? Could someone let me know the correct setting? Also, does the engine run richer or leaner as the screw is wound out?
7
« on: July 22, 2020, 09:35:13 AM »
Many thanks. That's great. How do I get in contact with Trigger?
8
« on: July 22, 2020, 07:43:49 AM »
Can anyone recommend a company to complete a re-bore on a set of K4 barrels. Also I'd like them vapour blasted - so if there was somewhere that you'd recommend who can do both the vapour blasting and rebore that would be ideal.
I've read somewhere that companies not experienced in CB750s can use the wrong tolerances for the re-bore? That seems strange as I would have thought a +0.25 piston would just need a +0.25 barrel over and above the standard to the normal tolerances? But is there anything I should be careful to mention to whoever does this work?
9
« on: July 17, 2020, 05:52:27 PM »
Thanks. That's very helpful. I've no intention of selling right now (unless my wife finds out it could be worth that sort of money!). I'll try and get a valuation and a written report.
Re the value - I'm sure I've spent more than £20k over the years (new exhausts, seat, engine rebuild, handlebars, chrome work, wiring loom, ignition coils, all the ectrical components under the LHS panel, alternator coils, starter motor, headlight, indicators, bearings, seals, brakes, chain and sprocket set, wheels, spokes, paintwork by the guy who used to paint Barry Sheene's bikes (Faircharm - the paint is a piece of artwork), oil tank, cables, all the rubber bits, carb refurb kit etc. etc. So it's been expensive. But I enjoyed doing it over the years. And to hear her start first time and run so we'll after all those years today - was a wonderful moment. Will enjoy taking her for a maiden voyage to Box Hill for a cup of tea in a week or so once the paper work is sorted.
10
« on: July 17, 2020, 04:05:06 PM »
Hi. After 10 years I've finally finished my UK K6 restoration project (started first time today and sounds amazing). It was a complete strip down / engine rebuild (I had that done by someone else) and the philosophy was to not put anything back on the bike unless it was original and perfect or a new part from Honda. I realise it's cost a lot more over the years than its worth - but was interested what I should be insuring for? She really is beautiful and I would imagine could be one of the best? Any ideas on insurance value? I've attached a photo (rear footrests and disc guard still to go on).
11
« on: July 17, 2020, 03:56:22 PM »
Thanks. I rinsed the tank out with petrol, checked the mesh strainer on the tap (all in perfect condition) and installed an in line filter just after the fuel tap (filter recommended by DSS). She started first time (after 10 years of being stripped down to every last nut and bolt) and amazingly the carbs seem to be perfectly balanced with a beautiful engine sound and steady tickover. I think I'll leave the in line filter in for a bit just to make sure any rouge bits get caught - and will take it out after a 1000 miles or so. By the way, what issues can they cause? Cheers. Phil
12
« on: July 16, 2020, 09:23:27 AM »
Wow! Thanks again! I put the rear wheel on about 10 years ago (this was a forgotten project until a few months ago) and completely forgot about the open ended swinging arm.
Can see I'm rapidly turning into the dunce of the forum! But this is my first CB750 sohc and I do learn fast (I like to think). So hopefully not too many more daft questions. I should be able to see if she starts very soon (just waiting for an in line fuel filter from DSS as I'm not sure there won't be any tiny bits in the tank even after a thorough rinse out - and also not sure I trust the mesh bag filter on the fuel tap).
Thanks again. Phil
13
« on: July 16, 2020, 08:40:14 AM »
So thanks to you lot the exhausts are now installed and went in quite easily in the end. But looking at the bike now it appears that the LHS exhausts have to be removed to get the rear wheel off now? That doesn't seem very "Honda" (I've had 8 over the years) so was just checking I'm not making another stupid mistake similar to when I was trying to fit the exhausts a couple of days ago? (I don't need to remove the rear wheel just now - but just checking for the future). Cheers. Phil
14
« on: July 14, 2020, 06:04:24 PM »
Thanks. Yes - have remembered those but need to drill / ream the hole in the footrest bracket out to 14mm. My brackets have a smaller (10mm?) hole but appear to be identical in every other way to the originals.
15
« on: July 14, 2020, 03:25:52 PM »
Yep. It really did show the power of the forum. Hope I can help someone out one day. One side done and the other to go. It's actually a work of art by Honda.
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