kz900

i am thinking about boring a kz 900 out to a 1015
this is a lot of metal to remove hasanybody done it and what are the draw backs to it other than thin cylinder walls.

Lots have done it and for the most part it still yields a very streetable motor.

lemo32 wrote:

i am thinking about boring a kz 900 out to a 1015
this is a lot of metal to remove hasanybody done it and what are the draw backs to it other than thin cylinder walls.

Why not just pick up a 1977-1980 1000 pistons and jugs?? They are a 1015 already! Watch ebay, you can pick up nice sets for around $75.00 or less.
Just my thoughts...
Pat
EDIT: If you want I can point you towards a gentleman that sells on ebay that parts Kawasaki's and is fantastic to deal with!! He does do deals on the side ( SHHH ) and I know of at least one other memeber here that HIGHLY recommends him.

Post edited by: patmann, at: 2005/11/15 12:35

Why ruin a good bike, just buy a 77 or 78 z1000... they are still quite cheap and then you can keep everything original.

Sid
z1A,z900-A4, 78 z1000

sidy wrote:

Why ruin a good bike, just buy a 77 or 78 z1000... they are still quite cheap and then you can keep everything original.

Sid
z1A,z900-A4, 78 z1000

why waste the $$?.. i vote for the block/pistion idea.. very easy and very cheap

if ur looking at sum 1015 aftermarket drop in pistons. i have a 78 kz1000 block that just need honing that ill sell. i can get it honed for $20 and have a new lower gasket(the one between the block and cases) ill threw in for $5.

I have a set of 1015 pistons that i will not be using anymore. They are from my drag motor. Have no idea what compression ratio they are. Going to 1200.

jasbarsydvic wrote:

I have a set of 1015 pistons that i will not be using anymore. They are from my drag motor. Have no idea what compression ratio they are. Going to 1200.

are u going to the 1200cc high comp?.. is this going to be a street bike?.. if so let me know how everything works out and how well runs on the street. i heard that it would over heat like crazy at stop lights.

I have a 1015 kit in my bike and it still runs strong even today, its been in for about 15 years, though its a little weak, it still keeps And beats up with the guys I ride with.

I'm not going to go with a high compression, just a 10:1. They over heat because the air stops moving, but if you can keep the air moving it should be ok, I hope. Summit and Jegs sell trans coolers that cool 30% better than aftermarket bike coolers. They also have the same coolers but with small electric fans that run on a thermostat which turns the fan on with the fluid get to a set temp. You will also gain 1 1/2 quart more oil. Everything sounds good but i will just have to wait and see next year, The snow is already falling.

to use the 1015 cylinder on a 900 the cases need to be clearansed for the sleeves,while the cases are apart you might as well have the crank welded .you also need to decide which crank you want to use ,the 900 "pork chop" crank will rev like a banshee while a 1000 crank has heavier counterweights and will be a little smoother .hope this helps,goodluck