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I would go with an 1170-1200 big bore and a nice set of carbs and cams. Turbos are money pits

all bikes are money pits,but they are fun money pits!hahahalot more drivable than carbed motor for same amount of horsepower.150hp carbed motor is gonna be a tempermental overheating beast.turbo on the other hand doesnt need high compression,big cams,bighead and a bunch of fancy stuff to make decent power and boost can be turned down to drive around on pump gas. 1327 bike with lots of compression,435 cams,big ported head,38 carbs good for around 140-150 hp

Post edited by: wireman, at: 2006/08/16 13:04

1197 turbo bike with mild head ,oversize valves,smaller cams.runs on pump gas with a little octane booster,makes more power at 9-10 pounds of boost than my 13:1 1327 motor in ltd or the 13:1 1197 that was in my z1 and is totally drivable and cheaper to build.

Post edited by: wireman, at: 2006/08/16 13:12

AFAIK sleeves for the 78mm pistons fit both 998 and 1089 J blocks and both require boring the block.

Jay???

-Duck

found it at APE site, so no go on sleeves for the 1260 in a stock J block?

KZ900 / 1000 / 1000J 1200 thru 1260cc big block only GPZ1100 1200thru 1260cc stock block

Post edited by: Duck, at: 2006/08/16 14:28

Duck wrote:

AFAIK sleeves for the 78mm pistons fit both 998 and 1089 J blocks and both require boring the block.

Jay???

-Duck

found it at APE site, so no go on sleeves for the 1260 in a stock J block?

KZ900 / 1000 / 1000J 1200 thru 1260cc big block only GPZ1100 1200thru 1260cc stock block<br><br>Post edited by: Duck, at: 2006/08/16 14:28

You can do a 1260 in a stock GPZ block, as per the APE website. Not 100% sure if a 1000J block will take it. We have done a boat load of 1200 1000Js.

KZs will be leakers if you use a stock block.

Jay

APE Jay wrote:

Duck wrote:

AFAIK sleeves for the 78mm pistons fit both 998 and 1089 J blocks and both require boring the block.

Jay???

-Duck

found it at APE site, so no go on sleeves for the 1260 in a stock J block?

KZ900 / 1000 / 1000J 1200 thru 1260cc big block only GPZ1100 1200thru 1260cc stock block<br><br>Post edited by: Duck, at: 2006/08/16 14:28

You can do a 1260 in a stock GPZ block, as per the APE website. Not 100% sure if a 1000J block will take it. We have done a boat load of 1200 1000Js.

KZs will be leakers if you use a stock block.

Jay

Jay-
I've got both 998 and 1089 blocks on the bench up at the shop and will compare by measuring the next time I'm up there. They looked to be the same but a few mm difference on something that big will easily escape my eye. Especially with one black and one silver. Where might it leak? Around the base?