GS1000 - Engine ID help

[dardoonk]

I've got two 8v 1000 motors and need to find out what year they are.
Both Chain drive & I have no idea what bike they came out.

GS1000-110015
GS1000-105124

Z1 website lists each year 1000 differently and I am unclear on what small variation the motors might have had from year to year.

When it comes to ordering engine rebuild kits and new seals, how much did the kits vary by year? Would both my engines take the same seals?

[TheCafeKid]

Not positive Kurt, but the 850s changed a couple times. in 80 the head changed. a year or so later, the cam timing changed. In 79-81 the block seemed to be based on the 750 or 1000 motor, but in 82, the block looks to be its own, or based off the 1100G block (or vice verse) But other than the head change for the 1000 in 80, i dunno whatelse besides cam timing they may have changed.

[dardoonk]

Mainly, I am concerned with gaskets & seals. Best case scenario is that I have two identical motors. As long as I figure out what WON"T fit, I'll be okay

[80GS750]

from what i have seen, they are either 78 or 79's

the good news is all the seals are the same for both years...

[dardoonk]

the good news is all the seals are the same for both years...

That's what I want to hear!!!! :-):-)

[80GS750]

i ordered the gasket kit from ebay, it was like $70 or so, but it had all the correct gaskets i need, and it worked out ok for me....

[Sandy]

According to a chart I have the serial number range for 1978 was 100001 to 121073 with 1979 starting at 121074. That would make yours both 1978. Shouldn't matter though as '78 and '79 as mentioned should be identical.

[dardoonk]

Dank u zeer :-)