New to me 1978 GS750

[Bobbys 94]

Keep your head up...and keep pushing forward. The early 2V 750 engine is supremely durable, and once you sort though the teething problems, you will be rewarded...

Yeah Ed, after close inspection of the engine, it doesn't look like it's ever been apart. Oil pan is coming off in the next bit and we'll see what that looks like. The clutch was stuck in the compressed position so the springs had been compressed for about 30 years. Springs were 1mm (.035) out of service spec. (too short) $18 and problem solved.
After I get the engine running I will do a complete tear down and resto on the GS. I love this stuff.

[Bobbys 94]

750oilpan.jpg
What you're looking at is "I Have To Take the Engine Apart"

No metal but a lot of water and microbes that can live in water. Something didn't look right in #4 so I took the head off to see what didn't look right.
#1 and 4 pistons were down for 30 years and more condensation build up in those 2 cyls, but I should be able to correct it with the proper hone.
This bike has had maybe 4 oil changes in the last 46 years.

[Bobbys 94]

750 camtower.jpg

I'm So glad no one tried to start this with ether back in the day. Absolutely Pristine under the cover and dry as a bone just an oil film on everything.

[Bobbys 94]

750camchain.jpg

Hate to take it apart but I've got nothing better to do. Head needs to come off.

[zuluwiz]

Back in '79, I bought a leftover '78, brand new. It was red just like this one, I think the other color was blue..Loved that bike for 2 years, then traded up for an 11E, Loved that bike even more, but I sometimes wish I still had the 750. Ah, well, those were the days, my friend. We thought they;d never end.

(edit)On second thought, my bike was a darker red, and the gas cap cover was unpainted plastic: black. I wonder if Bobby's bike has been repainted?

[Bobbys 94]

750piston.jpg

Cylinder has to come off to hone and check rings. I did do a little clean up before the pic. Wish I knew how to point my pics.

[Big Block]

Cams look very nice. I owned an orange one and am currently dealing on an original owner blue/dark red pair of them.

[Bobbys 94]

All 4 carbs were junk and these are what I ended up getting from a member here. Looks like someone drained the fuel from the carbs many years ago. All jets saved and other than gaskets and
O-rings, all was perfect inside. The #3 vacuum nipple was missing but I have my donor set of carbs on hand, easy fix.

carbb4.jpg

[rphillips]

Glad all go'in good,,, every day another step forward.

[Bobbys 94]

This is after about 8 hours of tender love and care. No sandpaper, Dremel, files or any kind of dipping or blasting just good ol Elbow grease,scotchbrite wd-40 and Blue Magic Metal Polish.
Fuel rails were a must to replace as well as the choke lifter bushings.They fell apart in my hands during the disassembly process. Note to self: 46 year old rubber and plastic should All be replaced.

k&ncarb4.jpg

[Bobbys 94]

carb big.jpg
Closeup shows how pristine the carb bodies are. The insides looked as nice.

[allojohn]

Just a heads up..... Some members report fuel starvation issues using inline gas filters and you'll need to re-jet the carbs to account for the pods increased airflow. The stock pilot may be OK but the mains will need jacking up to 115 or more. There are many posts regarding re-jetting for pods - good luck!

[Nessism]

Zed's "air correction jets" are the shortcut to clean running with pods.

[allojohn]

Ed and Zed, I'm curious... can the air corrector jets mod be reversed?

[Pinrut]

What's a good way to clean the fins on the motor and the covers on the motor? I'm doing a similar restore on my dad's 77' GS750 and the motor looks like yours