ElChingonCabron Posted July 13, 2003 Share Posted July 13, 2003 Looking for a winter project...considering a big bore kit....so who makes one and where can I get one??? TIA- Sanch '98 XX nitrous whore Quote Link to comment Share on other sites More sharing options...
Northman Posted July 13, 2003 Share Posted July 13, 2003 Wiseco definitely makes one, I think JE does, as well. Try here: CBR Zone Quote Link to comment Share on other sites More sharing options...
mickcbr1100 Posted July 13, 2003 Share Posted July 13, 2003 TTS UK does as well, dont know how good the prices match up with over there though.http://www.tts-performance.com/bigborepage.php Quote Link to comment Share on other sites More sharing options...
ElChingonCabron Posted July 13, 2003 Author Share Posted July 13, 2003 Sweet, thanks doodes :cool: Sanch Quote Link to comment Share on other sites More sharing options...
CasterTroy Posted December 13, 2003 Share Posted December 13, 2003 Has anyone INSTALLED ONE? Just curious about mods under $1000 and what they merit Quote Link to comment Share on other sites More sharing options...
Northman Posted December 13, 2003 Share Posted December 13, 2003 Just curious about mods under $1000 and what they merit By the time you're done, it will definitely be over $1K! Stay tuned to find out what a big bore kit can yield. I'm doing mine over the next few months, and will have it documented start to finish, including dyno testing. :grin: Quote Link to comment Share on other sites More sharing options...
tomek Posted December 13, 2003 Share Posted December 13, 2003 I`ve done wiseco big bore kit on Yzf 1000.Lots of fine tunning. If installed as delivered squish is at 1.6 mil,waaaay too much. When gap between flat part of piston top and cylinder head is closed to more desirable 0.8 mil compression ratio jumps to 14.0.Too much.Compression bump had to be machined.I ended up talking 1.1 mil from them with comp. ratio 12.8. Wiseco pistons are forged with machined tops,valve pockets are knife sharp,they needed to be smoothed out to eliminate hot spots and preserve mixture turbulence. Some people say J.E pistons are better,they expends less,less clearance required,less piston slap on cold engine and they have better tolerances. Wiseco kits come with the cylinder head gasket,it is Cometic part,or total piece of junk,it will fail soon or later. People how say they know recommend using stock gasket and carefully grinding to hale to desired size. Quote Link to comment Share on other sites More sharing options...
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