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Hi Mello. Thanks for the info. Saw his name on the member list. I don't want to join the ST-owners forum, but if you're on it? Can you send him a PM, tell him to get back to the real forum! VFRD misses him. Cheers

If there is decent airflow through the radiator then the bike should sit at/near the thermostat opening point of 78-80C or 176F irrespective of the ambient temperature. When you get stuck in traffic (no air passing through the radiator) the temperature will rise to around 100 (212) and should cycle up/down as the fans switch on off. To get higher than that would suggest maybe the fans don't work or the thermostat is stuck. Let's assume the cooling system is full and the reservoir has a decent volume as well (you checked that, right?). If the radiator stays cold when the engine starts and then suddenly gets too hot to touch around 176, the thermostat probably works. If the radiator gently warms up as soon as the engine starts, the thermostat is probably jammed half-open. If the radiator never gets hot, the thermostat is probably jammed shut. Check the fan switches itself on around 212F and off a few degrees below that. Some have altered the fan wiring to put a manual bypass switch in place, so if you are going to get mired in traffic you can start the fan earlier.

May '93: Cherry blossoms at Beacon Hill park made a good backdrop for this shot of the new-to me '91 VFR750.

...I bought this lightly used 2 year old VFR750, and haven't been without a Honda since then; several VFRs and a handful of VTR1000F. I'd bought the bike late that afternoon, and being early March it was a dark, damp first ride to visit my folks. I'd love to have it back, and in that condition.

I was reading through the very useful thread below, but couldn't add to it, so I guess the best I can do is put it here, shame to split things up, but never mind! https://www.vfrdiscussion.com/index.php?/forums/topic/83194-rear-brake-locking-after-pressing-pedal/ Some more photos of the mystery green valve. This is a relieving check valve. The mesh is critical because the relief orifice is 0.2mm or less and I think people might miss it, so I'm documenting it here, The photos show me removing it, note the orientation, balls up please.... 😉 Red silicone pipe in the outlet of the master cylinder and it hovers out with ease (bearing in mind my 25 year old bike is almost as new condition.... yours might not be so free!) Mesh on both sides, the unseen side has 2 tabs of different sizes to prevent it being put together wrong, as it's eccentric. The spring and ball can be seen. The other side sort of resembles a bottle cap and it pushes into a face groove and snaps down, I used a 0.5mm drill to lift a corner and got a small flat bladed under it as shown, it was still a bit tricky/delicate even with the flat driver to assist. Now shown around the 5.5mm mark on the metric ruler, you can just make out a tiny orifice, this is the relief port. It's so small I can measure it, but I think it is around 0.2mm maybe less. The smallest drill I have, is 0.35 so I can't clear it with a drill, in the end after searching though my wire brush drawer, one had bristles small enough, that were stiff enough not to break, if you break one in there, it's never coming out, be warned, be gentle, if the wire kinks, dont straighten it, remove it, throw it away, start again. I wouldn't advise drill bits or brass wire brushes for this reason, they are too easily snapped the hole is very deep, no doubt to add to it's restrictiveness. The bike is a barn find, very low mileage, very very good condition, its all very clean, but I pushed a slug a waxy looking something from that hole, hopefully this will resolve my issue as pressure was building up in the centre piston and was immediately released when I cracked the hose. The pressure went all the way back to here, then stopped across this plastic relieving check valve. Hopefully the photos and videos here will be immortalised forever, but if not, get in touch, or I keep them here: https://www.dropbox.com/scl/fo/tfbghuds6mhf49210s78o/AME1iORZF4UJXQm3jKPyTjY?rlkey=kdw4ehnjmi1nuoimdw0ra4ifj&dl=0 20240417_223535.mp4 20240417_223419.mp4

"Wheel weight to be used later."

Seems hot headed to me. Could be many things. Have you looked at anything yet? Low coolant and air in system are high on the list. Thermostat... possessed...

I know it made the rounds on the FB group. Like you, I figure it will be tough to find a 4th gen starting about now. May be a good idea to hang on to an unmolested one even.

Don't listen to them! I returned a few weeks ago from 2800 miles across France and into Northern Spain on my 1200. Flawless (except when I lost the rear brake on a very long downhill twisty section). 100mph = 50mpg (UK gallons). Honest! Budget on upgrading suspension and comfort seat. Panniers are not very big. Brakes are awesome. Ensure shaft recall has been completed - punch mark above frame number. Lose the standard, heavy end can and find a smaller, louder one of your choice. ECU can be tuned remotely to remove 1st/2nd & 6th gear limitations and smooth out low rpms. Beware front brake disc warping. Can't think of anything else right now. Please let us know how you get on.

It's a basic USB/serial to TTL converter cable. Can build your own with instructions here: https://github.com/AlexKovalevich/HondaECU Heck once you've reached that site, you might as well download all the software to edit maps and flash them to ECU yourself. He's got stock and modified .BIN files for download with 1st/2nd gear restrictions removed.

Thanks for the replies guys.. I figured either these VFR1200 parts are rare and sought after, or not at all in demand as sales were so low in the US.. At very least I figure the plastics and OEM panniers (blue) will sell easily when the time comes. Sorry for the missing pics on the locost build links- that website has some challenges.. Here are a few youtube links that will work better (at least to show my older build, the Honda N600/ VFR800): The actual fabrication on the above car is in slideshow form below (not my videos): The 'other' VFR800 build is my ongoing 1959 Berkeley (my tiny British car seen below with 2 different bodies).. it is a work in progress.. If you search 'ccrunner,' some pics and videos will pop up here and there.. thanks for your interest.. I'm really enjoying the challenges combining both a car and a bike to make a fun project.

I'm just going to leave this here ⚙️🤷