What big bore ktis are you guys running?

[kawasakiracer]

What big bore kits are you guys running and which one seems to be the most reliable?
I already have Pro Circuit full exhaust, jet kit, alba racing intake with k&n filter, k&n power lid, and pro com rev box.

[sd1]

you have a lot of option as far as a bbk..you can resleeve your own cylinder or have it bored..or you can go with a cylinder works or athena kit with larger water passages..or a tudors or ice cube kit....your budgets the limit...if you want low cost the cylinder works is a good buy

[cataway]

the problem with BBK (IMO) is unless ya do all the tricks ,pipe , porting, carb,intake ,cams ect. ect. your better off just doing all the tricks to the stock bore unit ,39-40 hp is possible.

if you really want to turn some heads put in a +4 crank ,cams,pipe , a carb , clean up the ports

how much money do you want to spend?

[luke23]

http://www.yoshimura-rd.com/ps-1603-1024-ltz-drz-kfx-449cc-motor-kit-assembled-with-pro-series-exhaust.aspx

This and a FCR39+ makes a hellacious combo. I just got mine put it. Waitin on a carb and ill have mine running.

[sd1]

Originally posted by luke23
http://www.yoshimura-rd.com/ps-1603-1024-ltz-drz-kfx-449cc-motor-kit-assembled-with-pro-series-exhaust.aspx

This and a FCR39+ makes a hellacious combo. I just got mine put it. Waitin on a carb and ill have mine running.

yes thats an awesome kit....doug gust proven too :)

[f4iracer]

holy pricetag on that kit.

you could just buy a nice used 450 for about 500 bucks more than that price tag.

[cataway]

you could but i've yet to find a ltr that can out run my ltz.
that kit is hardly the best ,its only a 92mm bore and thats not really the best cam

[jacobw]

the yoshimura kit hands down is the best kit for the z400 yokely even ran it for a while they spend so much time on suzukis motors they know then in and out. If you have the money that is the one or the athena kit is next in line. You send you motor to any reputable builder and it will cost you 2500 most of the time it costs 1500 in parts by the time you buy the stroker crank, have the head ported, cams, carb bored, etc.

[cataway]

the yosh cam in that kit is not that grate
Cam____________INTAKE____________EXHAUST
Model -------Lift"---MM---Duration__Lift"---MM--Duration
S/SM-------0.334--8.48----227____0.323--8.20---243
E-----------0.351--8.92----227____0.366--9.30---243
Yoshi-------0.354--8.99----236____0.366--9.30---242
HotCam_S1-0.356--9.04----238____0.356--9.04---238 Currently Available
HotCam_S2-0.377--9.58----243____0.377--9.58---243 No Longer Available
RHC--------0.356--9.04----277____0.356--9.04---277

for power the rhc is the one to get
for bbk go with lest a 95 mm or later you going to wonder why you dint

[sd1]

You forgot web cams :) and megacycle too

[cataway]

not really the 187 is a web grind
however, juct to be fare
Web Grind# 631/294-.....................8.7 @ 224* Int and 8.17 @ 218* Exh.
Web Grind# 293/536......................9.14 @ 226* Int and 9.6 @ 244* Exh.
Web Grind# 288/293......................9.35 @ 234* Int and 9.15 @ 226* Exh.
Web Grind# 288/540......................9.35 @ 234* Int and 9.75 @ 248* Exh.
Web Grind# 540/539......................9.75 @ 248* Int and 10.16 @ 256* Exh.
Megacycle X510..............................10.85 @ 257* Int and 9.78 @ 252* Exh

there is in fact many many more grinds from web

[sd1]

Originally posted by cataway
there is in fact many many more grinds from web


LOL...yes and they also do custom grinding