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    CB750 Supply April 2024 Giveaway Starts Now! Want Free Parts? This Is the Place! Enter Now To Be a Winner!!!

    Count me in, please! All my favorite packages come from y’all
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    CB750 SUPPLY JULY GIVEAWAY STARTS NOW - READY...SET...GO... IT'S YOUR TURN- BUT YOU HAVE TO ENTER TO BE A WINNER

    I guess I wouldn't mind a gift card to a store that takes most of my paycheck anyway
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    cb750 sohc `72 engine ticking noise

    Pull the valve covers and inspect the underside of each cap. If there are small dents or nicks then one of your valves is hitting it. I read that sometimes wear on the valve seat can occur, causing you to get a false clearing reading and giving the valve way too much clearance.
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    cb750 sohc `72 engine ticking noise

    Sounds like loose valve but you said you already checked the clearances. Does the noise go away when you pull clutch
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    1977 CB750F Super Sport Carburetor rebuild

    You're quite right, I got confused last month. I hope you're all pleased to know that having rejetted with OEM brass a whole bunch and raised the needle one notch, perfected timing and tappet clearance etc, the bike runs beautifully with K&N pods. Thanks to everyone here for the help. I have...
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    1978 CB750K Tuning

    Haha, I remember you from months ago. You helped me out with a link explaining how to dismantle and reassemble the carb bank. It was a total pain in the butt, but worthwhile.
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    1978 CB750K Tuning

    If it's only idling on choke, you're running lean, aka not enough fuel and too much air. You can verify this by pulling your plugs. Put new plugs in, run the bike at idle for 2-3 min (try not to use choke, use idle adjust screw or throttle to keep it alive if possible). Pull plugs, see if the...
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    low brake pressure - bleeding the brakes wrong?

    Personally I can't pull my lever anywhere near to the bar, and my front brake is extremely responsive. And it's an extremely shitty, old master cylinder that I hurriedly rebuilt. Have you checked your brake lines for tiny leaks? I made custom brake lines for my clip-ons and I messed up the first...
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    Clutch does not release at all..................

    Cliff, it's my pleasure. Between this forum and http://forums.sohc4.net/index.php I could never have gotten this bike running the way I have. Even with pod filters on and open 4:1 exhaust it purrs like a sewing machine and snarls like a scalded panther when I open it up. I don't have an HOA here...
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    Clutch does not release at all..................

    Oh, lol. I know exactly what you mean. I had the same head-scratcher - tell me this, does it feel “different” eg “looser” when you turn the rear tire with the clutch pulled and in gear Vs not pulled and in gear. Because I rebuilt my clutch with new plates and springs a couple weeks ago and was...
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    Question on carbs

    PD carbs are much less finnicky than the others in my opinion. 35 slow and 105 main, usually 14.5mm float height. If you need jets, order from jetsrus because they have OEM brass which is obviously better. I’m running 40 slow and 120 main due to very open 4:1 and pods. As gunr said the throttle...
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    Clutch does not release at all..................

    Did you adjust the ball bearing lifter clearance just inside the outer cover? It’s adjusted by loosening the jam nut and then adjusting with a flat screwdriver. If it’s not “in” far enough then the clutch won’t engage. Common occurrence with clutch rebuilds, the clearance gets out of wack when...
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    Carburetor compatibility

    All my holes were stripped. I got this and now everything is perfect. Repairing the threads on the PD carbs will be quicker and easier than finding a way to connect the wrong carbs to the wrong intakes, in my opinion. https://www.amazon.com/dp/B007IBRJQC?psc=1&ref=ppx_yo2ov_dt_b_product_details
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    Buying and worried about carbs

    No need to be worried about carbs tbh. I rebuilt a set of PD41As, with no prior mechanical experience by following youtube vids and forum posts. You'll need a good carb rebuild kit to replace gaskets, o-rings etc. Only buy jets from JetsRUs, everything else is cheap crap that isn't manufactured...
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    1977 CB750F Super Sport Carburetor rebuild

    Update: fuck pods on CV carbs, I have an OEM airbox ready to install
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    Cafe racer project question!

    I see you have a SOHC with pods - what jetting/ needle setup are you using, and how does it perform? Cheers
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    Oil!

    Hi there friends, I promised I ran a few searches for the answer but couldn't find it. My 77 CB750 is out of oil, just about. The previous owner installed a (poor) aftermarket tank that doesn't have a vent, just a magnetic cap which acts as a vent. I understand on these bikes the vent line...
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    Carb Screws

    dirtdigger is correct. If you're going to use a vacuum synchronizer but don't have the adapter, what I did was to buy some 5mm/ .7 thread pitch bolts and drill through end-to-end with a 1/16 drill bit, then add an o-ring (the fuel vent line is perfect for this) and a nylock nut to hold it in...
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    1977 CB750F Super Sport Carburetor rebuild

    Update: the correct ball sizing is 3.5mm Carbs are fully cleaned, rebuilt, bench-synced, and on the bike. The bike runs pretty well, kind of bubbly in the low end (pod filters) but it absolutely screams and flies when you open it up. I have K&N pod filters on there because the previous owner...
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    1977 CB750F Super Sport Carburetor rebuild

    Ok, I've been busy so I've only just started putting them all back together again. The local shop changed their minds about wanting to work on them. Oh well. Going very well so far, however when I was trying to put in the accelerator check ball (I believe that's what it's called, it's a tiny...
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    1977 CB750F Super Sport Carburetor rebuild

    Thanks again. I think this is the earlier kind, as there's only one line of connective tubing. I took the brass restrictors out already and saved them.
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    1977 CB750F Super Sport Carburetor rebuild

    Thanks again folks. Due to time constraints, I've been thinking about giving them to a local Honda shop to clean them but the rubber hoses joining them together at the bowl end are all hard and cracked a little. Does anyone know what kind of tubing this is?
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    1977 CB750F Super Sport Carburetor rebuild

    Thank for you for a frankly life-changing response.
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    1977 CB750F Super Sport Carburetor rebuild

    Hi there friends, new to the forum. Tried a quick search, couldn't find an existing topic. I bought a Super Sport a week ago for very little money, and it starts first time (kick) but runs fairly rough. It only really runs on choke, even when warmed up. I'm pretty sure the guy left gas in it...
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