My new project thread: 78' GS750

[Spiff]

Kerosene or lamp oil I think it's called some places is even better at removing old grease and gunk

Slightly ****ed now, I've replaced the sump gasket but still it leaks. The threads on the two boltholes up front are stripped, I tried to repair the threads by drilling them out and filling them with hts-2000 aluminum brazing rod and a hot iron bolt but I guess that trick only works on the infomercial on YouTube cause after tightening the bolts they now spin freely....
So I guess I'll try helicoil thread inserts now instead....

 

[Spiff]

Well its running now... Got some snow to so I guess I won't be riding it any time soon..
Suzuki GS750 idling: http://youtu.be/_q-bLCTwy8c

So on my to-do list there's only a couple of tasks left.
-Bleed rear brakes.
-Make seat (huge task)
-Shorten the gear linkage rod.

 

[Spiff]

As it is now, nearly finished, basically just the seat left, but I do think I need to figure out a way of mounting the instruments lower down....

 

[Spiff]

I have started the seat, this might prove to be the most challenging task of them all!

A layer of foam to cover up any irregularites...

pattern for the sides of the seat

Seat innlay

 

[Spiff]

I have made a seat

 

[Charlie G]

Good start. Finish it off!

cg

 

[Spiff]

Thanks, now I just need a staplegun so I can stretch and fit the seat cover... I thougth about using spray glue but then I would never get it off again if I ever want to redo it or something...

I was thinking of adding a some contrast stitching in either gold or red but now I'm not so sure... What do you guys think?

 

[GateKeeper]

do the red if your going to do it...

.

 

[Charlie G]

I don't think I would.

cg

 

[Spiff]

I think I'm just gonna leave it as is.

 

[tkent02]

I think the stitching would look gaudy, unless it was really done well.

 

[Spiff]

Yeah I think it'll look much cleaner without any contrast stitching at all

 

[Spiff]

Finished? Mostly, yes.... I need to get a new brake light switch up front, the current one is broken which is kinda bad since the front brake is what I use the most
I also need to take apart the light switch and clean it since there are some small contact issues from time to time.
But it's driveable, at least thats something right?
I also ordered a smaller license plate today.

 

[Guest]

Very nicely done! congratulations sir.

 

[Charlie G]

Nicely done! I think I'd move the tail light back a bit to be at least flush with the end of the rear cowl. Seat turned out good. Like your pink ride with training wheels

cg

 

[Spiff]

So I've been riding this thing out and about town for some time now and it's the same problem now as it was the last time it was on the road.

Plugs carbon fouling and eventually it starts running on just a couple of cylinders untill it's warmed up...
So today I checked the idle adjustment screws, they where out a full three turns. So I cleaned the plugs and turned the screws in a turn and it seems to run a little bit better under slow driving. Plugs looked good. We'll see how it goes, might need some more adjusting...

Also replaced the front brake switch, blew a fuse('cause the old switch shorted something) and finally I managed to shake the brake light bulb to destruction, just another day right

 

[Spiff]

So here's the results of an hours time mostly cruising around town...

number 3 and 4

1 and 2

So it seems cylinders 2 and 3 are running slightly richer than the two outer ones... Should I do something about this? like try and adjust the middle ones a quarter/half turn in or is this just normal or nothing to worry about?

All 4 screws are adjusted the same now.(2 turns out)

 

[Guest]

Dial them in a 1/4 turn, 2&3. Hard to tell what #1 looked like but #4 looks perfect. The other thing to test if you haven't already is the voltage getting to the coils. The coil for 2 & 3 could be a little weaker and cause the carbon fouling.

 

[tkent02]

Don't adjust anything until you figure out what it's doing.
#3 looks rich, #2 looks oil fouled. #1 and #4 look OK for now. Poor picture but the insulator on #2 looks black and shiny? Black and shiny is oil fouled. Flat black is rich. Post a better pic if you can. #3 being rich with the other cylinders not being rich points to a petcock leaking fuel down the vacuum line into carb #3.

Love the seat and the whole tail end. Very nice.

 

[Spiff]

Don't adjust anything until you figure out what it's doing.
#3 looks rich, #2 looks oil fouled. #1 and #4 look OK for now. Poor picture but the insulator on #2 looks black and shiny? Black and shiny is oil fouled. Flat black is rich. Post a better pic if you can. #3 being rich with the other cylinders not being rich points to a petcock leaking fuel down the vacuum line into carb #3.

Love the seat and the whole tail end. Very nice.

#2 is carbon, it just looks shiny 'cause of the picture

I checked the voltage today and both coils are getting the same voltage. However there was a voltage drop of about 2-2,5 V from battery to coils
measured with ignition ON, engine and lights OFF.
With Engine on I measured a good 13 volts over the coils but that dropped to 10-11 as soon as I put the lights on.

So I did the relay mod and I'm hoping that will give me some more juice