Haybusa Parts and Service Member Support

Author Topic: 1340 13.5:1 pistons  (Read 4876 times)

Offline RHead

  • Rider
  • ***
  • Posts: 22
  • Gender: Male
1340 13.5:1 pistons
« on: August 16, 2009, 09:05:50 AM »
I didn't found any topic that someone has doing put 1340cc 13.5:1 pistons and modified also head porting.

Does it need better battery? and what most like hp you get from it?

Offline gqbusa

  • Rider
  • ***
  • Posts: 36
Re: 1340 13.5:1 pistons
« Reply #1 on: August 18, 2009, 08:01:42 PM »
A coherent sentence or two would be great for starters.

Offline Landspeed Larry

  • Rider
  • ***
  • Posts: 407
Re: 1340 13.5:1 pistons
« Reply #2 on: August 19, 2009, 02:04:12 PM »
Quote
A coherent sentence or two would be great for starters.
He is from Finland you dumbazz. How good is your Finnish? Look at his profile before you spout off.  LSL
All motor all the time and a turbo now and then.

Offline gqbusa

  • Rider
  • ***
  • Posts: 36
Re: 1340 13.5:1 pistons
« Reply #3 on: August 19, 2009, 08:39:55 PM »
Mind your business little fella lsl.

Offline gqbusa

  • Rider
  • ***
  • Posts: 36
Re: 1340 13.5:1 pistons
« Reply #4 on: August 19, 2009, 08:42:39 PM »
Minun suomenkielen taitoni on huono.....that's how my Finnish is.

Offline RHead

  • Rider
  • ***
  • Posts: 22
  • Gender: Male
Re: 1340 13.5:1 pistons
« Reply #5 on: August 25, 2009, 03:12:21 PM »
That's good start learning finish  8)

Offline RHead

  • Rider
  • ***
  • Posts: 22
  • Gender: Male
Re: 1340 13.5:1 pistons
« Reply #6 on: August 25, 2009, 03:13:29 PM »
So I'm going to put 13.5:1 pistons and some head porting.

Does it need bigger battery ? Like YTX14-BS instead YTX12-BS.

Offline Shamrock

  • Post Apocalyptic Whore
  • ********
  • Posts: 10171
  • Gender: Male
    • Shamrock Racing
Re: 1340 13.5:1 pistons
« Reply #7 on: August 25, 2009, 10:08:35 PM »
So I'm going to put 13.5:1 pistons and some head porting.

Does it need bigger battery ? Like YTX14-BS instead YTX12-BS.

I would say yes when hot they  dont like to crank over as easy. but also it depends on cam timing.  :thumb:

Offline SKILLZ

  • Rider
  • ***
  • Posts: 257
  • Gender: Male
  • Where am I?
Re: 1340 13.5:1 pistons
« Reply #8 on: August 26, 2009, 09:20:13 PM »
Mine cranks fine with stock battery  and cams at 106/108
8.95 @152.40 on 06 stock bore N/A

08' 8.75 @159.18 stock bore N/A  @1900" DA