GS1000 with GS1100G top end

[srsupertrap]

Daniel,
Excellent evaluation . . . those photos answers so many questions.

When Tkent02 & I tried installing my 1100G cylinder on his GS1000 block we had the pistons still installed and could not see what was holding it up. Our cylinder was being held up in the middle so the bottom of the liner must have been contacting that transmission drive gear. I guess I will remove that concave notch or radius before I have the 1100G cylinder bored out.

Steve

[kochic]

Thank you very much for ansewring a lot of question.
A picture is worth a thousand words.
Marc

[7981GS]

You cannot even see where it made contact.



So, if you were to grind a small concave amount of where it does make contact up to the top of the chamfer should be plenty.
Then, chamfer that cut-out to ease in piston ring installation and you should be safe.

Daniel

[Suzuki_Don]

I would think that all one has to do is ever so slightly grind a concave notch in the sleeve on #2 cylinder.
Way below the lowest point of the piston skirt.
Perhaps none at all with a factory .020 base gasket.


Daniel

Daniel, do you mean No. 3 cylinder?

[7981GS]

Daniel, do you mean No. 3 cylinder?

Probably... the one that is directly over the gear.

Daniel

[srsupertrap]

Decided to resolve the issue of what was exactly holding up the GS1100G cylinder on the GS1000 engine since my cylinders & Head should be back soon. I tore down my engine in 3 hours and spent some time measuring a 1979 GS1000E & 1983 GS1100G cylinder with a Mituoyo digital caliper, here is what I got:

GS1000E Cylinder Sleeve Outside Diameter
#1 76.43mm
#2 76.42mm
#3 76.46mm
#4 76.59mm
GS1000E Cylinder Spacing distance
1&2 18.67mm
2&3 43.63mm
3&4 18.48mm
GS1000 Cylinder Sleeve Depth from base Gasket Surface
#1 29.38mm
#4 29.39 mm

GS1100G Cylinder Sleeve Outside Diameter
#1 78.16mm
#2 78.13mm
#3 78.10mm
#4 78.05mm
GS1100G Cylinder Spacing distance
1&2 16.81mm
2&3 41.94mm
3&4 16.90mm
GS1100 Cylinder Sleeve Depth from base Gasket Surface
#1 29.22mm
#4 29.24 mm

I then install a extra 1100G cylinder (1074 cc) on my GS1000E engine case and it drops right on. I then rig the cam chain so it won't get caught and I proceed to rotate and rotate and rotate so more. Nothing moves, lifts or other. I look down the cylinders and the pork chops and crank gear clears everything. I rotate so more with same result.

The measurements show the cylinder depth is identical between the GS1000 & GS1100G so no issue with contacting the crank gear as previosuly stated. I will verify on Monday since my 1100 parts should be close to done

[srsupertrap]

Here is mine with Wiseco 73.5 pistons installed and .40" shaved off the cylinder. Looks like my measurements were close.