81-83 750 head and base removal.

[Nessism]

Hey Larry,
Here are some airbox photos from a GS1000GL airbox. Numbers on the main box match those on yours so them must be fairly similar.

[Larry D]

Well, I got everything back together and I'm pleased to report that the 750 fired right up and ran great !! I only let it run for a few minutes, but, no apparent problems.

Here's some pics.

[mriddle]

Awesome job!

[Larry D]

Thanks Mike. That's "your" engine. I can't thank you enough. Also, Brian, for his experience, tools and an extra set of hands for getting the base and head back on.

It was alot of work, but, I spread it out over a couple months and it didn't seem to bad.

The GK is the next patient.

[mriddle]

It was a big paperweight for me

[posplayr]

Well, I got everything back together and I'm pleased to report that the 750 fired right up and ran great !! I only let it run for a few minutes, but, no apparent problems.

Here's some pics.

Very Nice; I need to get started on my 81 GS750EX that runs great but leaks oil like sive

[Nessism]

Great work Larry.

I see a green base gasket which means Athena. Did your gasket kit have a MLS head gasket? If so, torque that bad boy after every other full heat cycle until the gasket settles down. I used a MLS head gasket on my 1000 and the nuts needed to be torqued a couple of different times while the gasket settled.

[posplayr]

Great work Larry.

I see a green base gasket which means Athena. Did your gasket kit have a MLS head gasket? If so, torque that bad boy after every other full heat cycle until the gasket settles down. I used a MLS head gasket on my 1000 and the nuts needed to be torqued a couple of different times while the gasket settled.

I bought all OEM; about $200 for head/base/rings and circlips. I have a complete Athena for the rest of the stuff.

[Steve]

Anyplace less expensive than partshark for rings, they list $22.25 per piston....or $89.00 for all four.

I know this was asked a couple of months ago and your bike is back together, but nobody answered your question.

Cycle Parts Nation $20.53 per piston, $82.12 for all four.


I had to look it up some time, as I might get into changing the gaskets on my wife's bike before she hits the road this spring.
Like everyone is preaching, if you're that far into it, what's another $100.
The best part is that she can't say much about it. It's for HER bike.

.

.

[chef1366]

You know I get this stuff called "Carbon Off" at work for the bottom of pots and pans. I bet it would work great on pistons.

[hikermikem]

Nice job Larry, looks great!

Are the jugs & head painted? And is the rest of the engine just scrubbed clean?

Still haven't opened up my 1100EX yet, but if she ends up looking as good as that when I'm done I'll be pleased!

How were the compression numbers after the new rings?

[Larry D]

The base gasket was a gift from Josh when I was visiting this summer, I plan on re-torqueing as recommended. I'll take your word of the maker.

I only painted the head and base....for now. The bottom end of the engine was pretty grundgy and with the weather, I don't have the gumption to lay out in the driveway and scrub it off for painting. I'll get to it this spring. No compression test yet. It started right up with a little choke and settled nicely at 1100rpm after a minute or so. I'm thinking it just needs some final tuning (and a sound thrashing) and it'll be fine.

[chef1366]

Go out and start that puppy and let it run at 4000 for around 20 minutes.
Seat those rings!

[Nessism]

Go out and start that puppy and let it run at 4000 for around 20 minutes.
Seat those rings!

Hey Bill, how about describing your break-in technique.

[chef1366]

If it runs after that I go out and blow it up.