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My pleasure. If you find a better option please post it. As of today the TNK forks are still on back order.

It Looks like David Silver Spares also has them. A bit pricey $299.07 each

The only place I could find forks is an Italian company TNK Motors. $175.50 per tube https://www.racetech.com/page/title/FTNK Fork Tubes

It's still at the shop. I am now awaiting new front forks from Italy (They are on back order) and the headlight bucket from Space Coast Plating.

$250 to measure your frame, $700 to straighten mine. Unfortunately their shop in south Florida has closed. You can check your steering head by running 2 strings from both sides of the back tire forward past the front wheel. My guess using this process was within a 1/4 inch of GDM's...

Having the motor in place is desired in order to keep the motor mounts aligned.

They have repaired the bent frame.

GDM has measured the frame and as suspected the steering head is not pointed in the correct direction. There is a 3.3 deg. twist between steering head and swing are pivot. At axle level offset 42.7mm to right. front wheel 55.6mm to right of back wheel at ground contact.

The bike was delivered to GDM today. I will report back once they make measurements.

I have a 1980 CB750C and I am wondering what the differences are between each model the c,k and f versions? This will be helpful in my search for parts.

I have a 1980 CB750C 32,000 miles on the spedo. I Purchased the bike used several years ago and finally got it running last year. The motor runs good. The bike was then parked for several years prior to me purchasing it. The seller did not know the history of the bike since it was driven by a...

Just an update the bike is running better every day. I am now working on frame geometry issues. I will move that discussion to suspension.

Well 2 weeks turned into 15 months. Long story short I got the bike running and it is running better than I could have imagined. Adjusted valves, Rebuilt carbs and tuned. Charging system seems to be OK. I've put around a thousand mils on it in the last few weeks and still cranks over with...

Hello, I've been out of the country for 2 weeks got back yesterday and the new coils had arrived. Installed the coils spark looks good. Cranked it over with starter fluid and got it to fire up for 3 or 4 seconds. tried again and no luck. Prior to installing the coils I ran a pint if...

OK thanks again for your advice. I'm going to pull the valve cover and check the valve lash.

I'm thinking of running some Marvei Mystery oil through the top end while the plugs are out. Maybe I should hook an electric drill to the crank and crank it over while I lube it. Thanks for the heads up on the compression test.

amc49 thanks for the lesson on the ignition Sys. Is the Spark unit the 2 aluminum components OKI MPS-200 on top of the battery housing? Compression test isn't good. 90 90 60 90. Motor hasn't run in several years. Any possibility the numbers might improve if I get it started? Bike shows...

I went to the local motorcycle repair shop and got some 7mm cooper core wire $2.00 per foot. They also had new NGK caps $6.00 a piece I got 4. I'm waiting for the new coils to arrive and will test the system then. I think I have a general understanding of the ignition system with one...

I have dome a little more investigating. The plug caps appear to be original see attachment. The 90 degree ones both have a resistance of 94200. Both of the straight ones seem to be have infinite resistance. The meter remains on 1.0. I connected the coil that didn't have a crack to my truck...

Thanks acm49. The ignition wires appear to be original. They are each labeled on the coil end coil 1 through 4 and on the plug end engine 1 through 4 accordingly. The wires are very stiff and in-flexable. Can I go to NAPA buy off the shelf ignition wire and cut them to fit? Is it 7mm...

Hi all I am a new member and this is my first post. I purchased a non-running 1980 CB750C. Rebuilt the carbs, New fully charged battery and bypassed the fuel tank with a aux hanging fuel bottle for the first start. I seem to be having ignition problems that are preventing the engine from...