Cylinder Blocks, Sleeves, Pistons and Heat

Funny thing - there was some guy named "Wireman" making comments in my old post. What ever happened to that guy? He seemed like kind of a jerk... :whistle: :laugh:

APE Jay wrote:

A 1327 in a stock block would have thicker sleeves than a stock KZ1000. Do you know the OD of the sleeves in your 1260?

3.2400"

So to rephrase the question: What would run cooler - a 1260 kit in a big block or a 1260 kit in a stock cylinder?

Injected wrote:

Mark1122 - Where are you measuring that temperature? is that oil temperature in the pan? or cylinder block temperature?

I am just interested because I am planning to go from stock 904 to 1015 which I believe is as big as I can go on stock liner and was wondering how hot that will run compared to what you guys are talking about (maxing out
a sleeve size)

I believe the liner goes down to .060" per side.

a 900 block bored to 1015 will not give you a problem. but a better avenue is get a 1015 block and bore to 1075 which leaves you more meat in the sleeves vs 900 going to 1015. i have kz1000 blocks in nice shape no broken fins etc if interested. you may need to clearance a 900 upper case a little to get block on. some cases you do some you don't email me if you need a 1015 block at b.flood@myactv.net

79MKII wrote:

APE Jay wrote:

A 1327 in a stock block would have thicker sleeves than a stock KZ1000. Do you know the OD of the sleeves in your 1260?

3.2400"

So to rephrase the question: What would run cooler - a 1260 kit in a big block or a 1260 kit in a stock cylinder?

the KZ block has deeper fins. therefore "I" think it would run cooler. my 1200 runs cooler than my 1327.
anyone else?

79MKII wrote:

Funny thing - there was some guy named "Wireman" making comments in my old post. What ever happened to that guy? He seemed like kind of a jerk... :whistle: :laugh:

jerk ? hell from my experiance with that guy id a$$hole is a better description of him! :woohoo:

mark1122 wrote:

79MKII wrote:

APE Jay wrote:

A 1327 in a stock block would have thicker sleeves than a stock KZ1000. Do you know the OD of the sleeves in your 1260?

3.2400"

So to rephrase the question: What would run cooler - a 1260 kit in a big block or a 1260 kit in a stock cylinder?

the KZ block has deeper fins. therefore "I" think it would run cooler. my 1200 runs cooler than my 1327.
anyone else?

the passages between cylinder 1-2 and 3-4 on the stock block is why they run cooler,bigblock is solid

PLUMMEN wrote:

79MKII wrote:

Funny thing - there was some guy named "Wireman" making comments in my old post. What ever happened to that guy? He seemed like kind of a jerk... :whistle: :laugh:

jerk ? hell from my experiance with that guy id a$$hole is a better description of him! :woohoo:

Yea Plummen, you're right. I trust your judgement on things like this. YOU are a much better man than that wireman character ever was. Believe me, I know - I'm a very good judge of character myself!
:laugh: :silly: :lol:

PLUMMEN wrote:

mark1122 wrote:

79MKII wrote:

APE Jay wrote:

A 1327 in a stock block would have thicker sleeves than a stock KZ1000. Do you know the OD of the sleeves in your 1260?

3.2400"

So to rephrase the question: What would run cooler - a 1260 kit in a big block or a 1260 kit in a stock cylinder?

the KZ block has deeper fins. therefore "I" think it would run cooler. my 1200 runs cooler than my 1327.
anyone else?

the passages between cylinder 1-2 and 3-4 on the stock block is why they run cooler,bigblock is solid

Wow, that seems like it would really make cylinders 2 and 3 run hot with no air getting in there. I was looking for an excuse to change my set up but I think I might look into a larger oil cooler instead of a big block. :lol: Too bad, I used an NOS Derale oil cooler that looks really cool but is kind of small. Would probably be good for the stock '78 KZ.

put a turbo on it and be done with it! :laugh:

PLUMMEN wrote:

put a turbo on it and be done with it! :laugh:

Oh yea! A small cc engine would be fine with a little boost. I'd love to have a turbo some day. That's my ultimate dream bike. I really gave it some serious thought before this last rebuild. One of these days...

1260 with a turbo would make you forget all about a bigblock motor! :laugh:

Im still riding a 32 year old 900 sleeved to 1105 and it still hauls butt for an old dog