900/1000 jugs

Powerstroke_fan
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07 Jul 2012 06:29 #534429 by Powerstroke_fan

900/1000 jugs was created by Powerstroke_fan

I have been looking to buy another jug for my engine build. I have came across a 900cc jug. The question i have is, are the jugs the same minus the sleeve and bore size? I will be boring them out and resleeving them to a 1197 or 1260. I just dont want to buy a 900cc jug and it not work or be to thin. Or do i need or would be better off to use a 1000cc jug?

1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD

2014- ZX14R all stock for now

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moneypit
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07 Jul 2012 13:30 #534503 by moneypit

Replied by moneypit on topic 900/1000 jugs

From what Ive read the 900 sleeve can only be bored to 1015 maybe 1045 The rest should be the same so I think it could be resleeved with the right size sleeves

2-76 kz900
St Paul MN

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andy9802gt
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If it tastes that good, eat it yourself.

07 Jul 2012 13:39 #534507 by andy9802gt

Replied by andy9802gt on topic 900/1000 jugs

My brothers 900 is bored to 1230 and that required epoxy between cylinders 2-3 to seal it back up. It actually cuts away that part of the block to get the sleeves to fit. If you want 1197-1260 best get a 1000 block to do it in since it has more meat on it.

'78 KZ1075 LTD
stage 1 head by Larry Cavanaugh
race built crank by John Pearson
Mikuni rs34's
k410 cams
back cut tranny
8" over D&G swinger
proving once again that age and treachery is better than youth and enthusiasm

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Powerstroke_fan
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07 Jul 2012 15:50 #534525 by Powerstroke_fan

Replied by Powerstroke_fan on topic 900/1000 jugs

I would be buying aftermarket sleeves just wondered about the jugs. I wanted to buy another jug because i wanted to keep the 1075 jug with the 1075 pistons. I got a stock 1000 jug with pistons but it has one chipped fin, If i am gonna put that much time into polishing it up and boring it and epoxying it and sleeving it i want a close to perfect jug with no broken fins. So i will try to find a 1000cc jug.

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wireman
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08 Jul 2012 01:51 #534595 by wireman

Replied by wireman on topic 900/1000 jugs

Theres no problem running 1197 with a stock 900 block and new sleeves,ive run many of them over the years and people were doing it long before me.

posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.

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Powerstroke_fan
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08 Jul 2012 10:17 #534633 by Powerstroke_fan

Replied by Powerstroke_fan on topic 900/1000 jugs

So are the 900cc blocks smaller or thinner than a 1000cc block or are they the same? I know the sleeve is smaller and the the bore for the sleeve is smaller and its stamped 905 instead of 1015, but other than that are they the same?

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wireman
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08 Jul 2012 12:38 #534647 by wireman

Replied by wireman on topic 900/1000 jugs

I think it has a lot of it has to do with which company was casting cylinders for kawasaki at the time.
Kind of like a small block chevy some can be punched .060 over really easy,others cant take hardly take a .030 overbore.
I have epoxied in the cooling passages in between 1/2 and 3/4 before on really hardcore street motors where you couldnt see it to try and add a little extra support to sleeves,but they run hotter doing this.

posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.

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Powerstroke_fan
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08 Jul 2012 14:48 #534660 by Powerstroke_fan

Replied by Powerstroke_fan on topic 900/1000 jugs

so i am gonna be purchasing a good used jug somewhere. Which year would be the best/ Thickest?

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mtkawboy
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08 Jul 2012 16:50 #534697 by mtkawboy

Replied by mtkawboy on topic 900/1000 jugs

My 76 900 has been 1105 for 35 years and is still going & well. I would start with a 1000 block now though

78-KZ1000/1105, 80 KZ1000, 82 Kawasaki GPZ750, 95 Harley Fatboy, 80 Suzuki GS1100ET, 81 GS1100E parts bike, 83 GS1100SD Katana/1394,78 Yamaha XT500, 81 Yamaha XS650, 78 Yamaha XS650E, 48 Whizzer model J motorbike, 71 Honda CT70H, 71 Honda CT70, 81 IT 250 Yamaha,82 Honda XL100S owned

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andy9802gt
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If it tastes that good, eat it yourself.

08 Jul 2012 17:54 #534711 by andy9802gt

Replied by andy9802gt on topic 900/1000 jugs

I'm not saying you can't use a 900 block and be fine. I'm saying there is more material in the 1000 block to work with.

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LarryC
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09 Jul 2012 07:30 - 09 Jul 2012 07:31 #534789 by LarryC

Replied by LarryC on topic 900/1000 jugs

Use your natural instincts..... big jugs are always an inmprovement

Well...did you buy that 14R yet Andy?

Larry C.

Last edit: 09 Jul 2012 07:31 by LarryC.

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Powerstroke_fan
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09 Jul 2012 16:59 #534867 by Powerstroke_fan

Replied by Powerstroke_fan on topic 900/1000 jugs

ya i will find a 1000 jug. Ya andy were all dying to find out if you picked up one yet?? Man i hate to see you sell the old kaw.

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