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Help! Questions about boring for more displacement...

  • Thread starter Thread starter gs1000racer
  • Start date Start date
G

gs1000racer

Guest
Hi everyone,

I want to go for some serious displacement on my Kat 1100, and found some JE pistons that would push it so 1500 cc's. What else is needed for this mod beyond having the block bored out (If even possible)?

Please help as this is totally new territory to me.

Thanks,
 
Last edited:
gs1000racer said:
Hi everyone,

I want to go for some serious displacement on my Kat 1100, and found some JE pistons that would push it so 1500 cc's. What else is needed for this mod beyond having the head bored out?

Please help as this is totally new territory to me.

Thanks,
Click to expand...

you would need a big block std block wont sleeve to 1500 and bore cases to suit
 
I have blocks & 1500 will make a LOT of torque!!! You need a LARGE oil cooler too. Would make a fun motor! Ray.
 
Can you get away with a stock top and bottom end when running a big block with those kind of pistons?

rapidray said:
I have blocks & 1500 will make a LOT of torque!!! You need a LARGE oil cooler too. Would make a fun motor! Ray.
Click to expand...
 
gs1000racer said:
Can you get away with a stock top and bottom end when running a big block with those kind of pistons?
Click to expand...

No, a stock bottom end will not be adequate.

To start I would do the following:
Welded crank with straight cut gears.
Clutch basket with HD backing plate and straight cut gear to match crank
HD trans shaft bearings

I am sure someone will chime in with more
 
Yes, and lots of work and money on the starting/charging system to turn over those big 'ol pistons. They are probably high compression, so count on running booster or race gas.
 
Call me at 714--356-7845. I build LOTS of big motors & it doesn't require as much as some here are making it sound. Ray.
 
rapidray said:
Call me at 714--356-7845. I build LOTS of big motors & it doesn't require as much as some here are making it sound. Ray.
Click to expand...


Come on Ray .....spill the beans I have the same dilemma

85 1150 wanting to go 15, mostly street with the occasional track appearance

Also want to knock the occasional Busa upside the head...;)
 
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