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Hello Everyone, So I removed my carbs for some cleaning while I awaited parts to arrive. Upon reinstallation, when I pull the clutch in to shift through the gears, I can hear the bike "surge" or what I describe as the rpms slightly increasing. Prior, when I pulled in the clutch to shift...

Would air assisted, 81 CB 900 C front forks be a direct drop in replacement for my 82 Nighthawk SC triple tree? I am pretty sure these are both 37mm forks. The axle mounts behind the tube, forgot what it's called. My inner tubes need replacing and I'm shopping on ebay.

So I want to modify the dummy light sensor on my dohc cb750. I want to drill out the threads where the wire connects on top of the sensor and tap it with 1/8" NPT to run an oil pressure gauge in series with the 0 oil sensor. I will then replace the small electrical connector on the end of the...

Well I thought I would share where I am at so far. I am a country boy, and growing up I never had anything that was shiny or pristine new. Everything I owned I had to beg, borrow, steal or build :thumbsup: So when it was time to scratch another itch in my midlife crisis, a ratty looking, post...

After the bike warms up the drain port on the bottom of the number two bowl pisses fuel constantly until everything empty. Not sure if it's the float adjustment or not. What should I do first? I pulled the number two bowl and everything seems ok. Ap shot coming from all sides of the...

Hello forum. So my 82 Nighthawk has sat for many years in a barn. Finally I got my hands on it and rebuilt the top end and carbs. I verified everything as best as I could with the anxiousness of hearing this baby run looming over me. With that being said, after hearing her roar, I drained...

I am trying to install a rear frame hoop with built in led. The outside diameter of my 82 nighthawk measures 1 inch. After searching, 99% of frame hoops are 7/8" or 22mm. If i planned on installing a plug for strength and weld in the hoop over that flush with my current frame, any...

Started with loosening up the wiring harness straps and congregated the electronics. Moved onto the real thing. $20 of steel from Home Depot When my battery arrives, Ill trim the battery tray up as much as possible and finalize the box. I plan to cut off the electronics...

Thanks primarily amc for all the help! The bike starts, runs and idles like a dream with only a bench sync. Stock head rebuild/clean/valve shim. Carburetors cleaned

Well I have a set of OEM used insulator boots, the ones that install between the intake ports and the carburetors. The number two boot doesn't seem to install onto the intake ports all the way when the other boots are fully seated. It just seems too short or the geometry is wrong. Any tips...

You should see all the ninja hooks I've created to try and snake this nozzle. On the number 1 carb, the nozzle is plugged. Can i drill out the small brass ball underneath the nozzle on the base of the carb to grant access to the nozzle? Seems like the only way to access this thing. I've...

So I need a new ignition switch, key and gas tank key. Because I am using a different gas tank I would like to get both in one shot. How about this one? The key looks to open the same style gas tank as I am using. My bike is a 82 cb750 nighthawk SC. Would this ignition switch work...

All the pieces are there but it has been hacked at a million times. Ill probably try and find a new harness. What I can repair, I will, and use heat shrink tubing. For now, I want to get comfortable with the harness, be able to clean it up and modify it also as needed. I want to eventually...

Hello All, Hope everyone had a nice holiday weekend and a great Thanksgiving. I really need to say Thank You all again! I am at the point where I am ready to consider the engine "done" for now but I still need a few things. First off, I was able to make the intake sprocket alignment dots the...

This piece now stick out the bottom of the carb slightly...the head has more threads, and seems taller...Ill get a side by side in the morning These o rings seem WAY too small....what do you think? Not sure where this goes... This was included, but doesn't match anything removed...

Grr....This is so annoying!!! The timing mark is at 1.4, the camshaft is secured with 3 bearing caps. The sprocket is rotating on the shoulder of the camshaft. Im trying to make sense of the bigger picture here so I can repeat this process in the future. The digital service manual obtained...

Well, I knew this was going to be a long process. These carbs had about 15 years of varnish sitting inside of them. Finally dove into this "rat's nest"......literally....Honey Bunches o Oats... First thing I did was read the carb overhaul chapter in the service manual. It started the tear...

Ok, well I'm really trying to do this test correctly, but I'm losing faith in this tool. Perhaps it's just my inexperience with both this tool (first time) and the measurement on an engine as opened up as mine. Basically I can hear the air hissing past the rings into the crankcase whenever I...

Before finalizing my top end assembly, I gave the pistons a wiggle in the bore only to find some play in the # 4, 3 and 2 cylinders. Number 4 has the most, and it gradually gets tighter across the block ending with Cylinder # 1 with no play at all. Just 2-4 What do you guys think?? Should I...

Hello fellas, **OP was in the wrong forum... I am trying to source some replacement boots from the block to the carbs, also from carbs to stock air box (for now...PODS look so sweet) my bike is an 1982 CB750SC - DOHC What year, make and models can I source rubbers from? I have found...

Hello fellas, I am trying to source some replacement boots from the block to the carbs, also from carbs to stock air box (for now...PODS look so sweet) my bike is an 1982 CB750SC - DOHC What year, make and models can I source rubbers from? I have found these so far...

OK, well I know you get what you pay for, but can you tell me what could happen if this head gasket is used. It is advertised as part number 8003. It is a 65mm Head Gasket. OEM head gasket is made of metal layers, solid and secure. New one is basically paper...So fkn sad. Also, the bore...

Just thought Id share. I am very pleased with the new look. More streamlined and boxy. Less upward curve also. Before After

1982 CB750 DOHC The head is removed, awaiting new head gasket. So I am preparing the valve clearances and want to know how to mock these parts up. Head has valves, springs, shim bucket installed. Can I simply install each camshaft in the correct position (using the small mark on the right...

Hello guys. So the plan is to assemble my top end to see if I have a zero clearance. So what was explained to me is that since I had the valves ground, the valve clearances will be that much tighter, to the point where I might have zero lash. If this is the case, then I am hoping to do a...

82 CB 750 SC I do not have the key and would like to remove the gas cap. I am glad technology has improved so no one can tamper with your tank. But how can I remove this cap without the key? The tank has been removed and I have access to the inside of the tank. I pressed down on the...

Using the Clymers Manual, I was able to fabricate a spring compressor tool out of a piece of pvc along with a large C clamp, gorilla tape and a piece of scrap metal. "Borrowed" some foam from work... Number 7 Intake Valve and seat... Combustion Chambers...Number one looks bad....

So I got the engine removed from the frame successfully using the clymers manual... so far so good Measured valve clearances....needed a metric feeler gauge.... I used the book and the notch cut out of the end of the exhaust camshaft...I aligned it in each position relative to the bearing...

Trying to figure out what gas tanks will fit on a 1982 750 Nighthawk. This is my bike frame These are craigslist advertised as mid 70's (72-76) CB 750 tanks that I would like to try....anyone know if they will fit nicely or require heavy modifications?

Hello Everyone! Starting a new thread in the correct location this time. Maybe I can get some help with this project... $200 craigslist find. Was registered in 1991, then stored in a barn. This is my first bike so be patient if I don't understand all the terminology and insight you guys may...