All right boys and girls. I've been working on a 1986 750 that I picked up cheap. It's got 21,XXX miles. It wasn't running when I got it and hadn't been for some time (last inspection sticker is from 2004). I've done a lot to it already and have made posts for various questions that come up along the way. I figured I would start one main thread on it to keep all the info together - mostly for my benefit if nothing else. This first post is gonna be a little long winded, but bear with me, just want you guys to have all the info.
SO FAR I'VE DONE:
Oil and filter change (Rotella 15w40)
Replace Air filters (OEM)
New AGM battery
---I put Iridiums in my '90 vn750 and gave the '86 it's old plugs - nothing wrong with them, just got a deal on Iridiums
Coolant change (Dexcool 50/50)
Rear spline lube (Honda Moly 70)
---New gear oil
Cleaned and rebuilt carbs
---All new o-rings (except the ones behind air mix screws. I drilled out the plugs, but left them be for now)
---Replaced 1 ripped diaphragm
---Tested - I think it's bad, but multimeters are not my strong suit
ISSUES I'M HAVING NOW:
I reinstalled the carbs and hit the start button. She lives! I got the bike to idle without hardly any effort. The bike made somewhat of a squealing noise on starting that quit after a few seconds. The squealing didn't seem to have any adverse effects on operation and I couldn't tell where it came from - just around the engine. I thought maybe the starter, but the noise continued after the start button was released. I've started it a few more times since and it always squeals a little, but seems to be going away. Is this just from sitting so long?
I'm having some issues with throttle response. It will snap back closed after I open it up, but is slow and I don't know if it closes all the way. I tried to adjust the cables according to the Clymer manual, but the tighter I went the harder it was to move the grip at all. I loosened them back up to where it was. I think one reason may be that when rebuilding the carbs I had to replace some of the white plastic washers on the central linkage. I couldn't find any just like stock so I got some that were thicker and sanded them down until they worked. Off the bike, the linkage snapped back good enough, but did seem a little stiffer than before. I believe the throttle snapped back normally before removing the carbs. Anyone know where to get washers to match OEM - can't find them on ronayers.com?
There's coolant leaking where the coolant pipe meets the rear head on the left side of the bike.
I think I may have over filled the coolant a little and took some back out of the overflow tank after seeing this. The coolant leaks down onto the left exhaust and smokes once the bike warms up a little.
After the bike warms up, along with some smoke from the area just behind the engine, the exhaust starts blowing white smoke. Coolant getting in the cylinder? It doesn't smoke until it warms up.
I did ride the bike slowly down the alley just to see if it would go and stop under its own power. So far, so good.
THINGS THE BIKE STILL NEEDS:
Tires - as far as I can tell from the code on the side, these are the original factory tires (from '86? Yikes!)
New R/R? again, not real confident with electrical
Carb sync - gonna build a manometer soon
Need to check the brakes, I've never bled brakes before
All in all, I'd say it's going pretty good! Starting the bike after my first ever carb rebuild gave me a lot of hope. Everything besides the carbs I've done before on my daily ride (1990 vn750) so it was familiar already.
Let me know what you guys think! Can post more pics if needed.