PDA

View Full Version : What Clutch do I need for Turbo'd YFZ450?


Jgringo
11-21-2007, 10:03 PM
I am curious about clutch options for a turbo-charged 450. Would a Drag clutch system be required due to the 80 extra HP being added? I want a 523cc Big Bore Kit plus the turbo to add unbelievable power to the quad, but I don't want to destroy my gears and clutch system... Anyone have an opinion?
ohsobad_chevy
11-22-2007, 09:13 AM
Yup, get a lockout clutch, put that power where it belongs. ;)
11-23-2007, 06:23 AM
post some pics of this, i wanna see it
ohsobad_chevy
11-23-2007, 09:11 AM
Originally posted by nofearrider1
post some pics of this, i wanna see it

Foe Shoe!! :p
Jgringo
11-25-2007, 11:05 AM
Its not done, I dont have any of the parts, I am figuring out what I need before I invest anything...
Idaho_Outlaw
11-27-2007, 01:59 PM
Dont waste your time and money with the 523. just get a good low compression CP piston and keep it stock bore. I think Brad Heuwagen was getting over 80hp with stock YFZ and blow through setup.
ohsobad_chevy
11-27-2007, 02:35 PM
Originally posted by Idaho_Outlaw
....I think Brad Heuwagen was getting over 80hp with stock YFZ and blow through setup.

Do you have any details on this? I would like to read about how he accomplished that. :)
Jgringo
11-27-2007, 04:07 PM
How much Hp does a stock 450 make?
07250ex
11-27-2007, 09:59 PM
yfz is 38 - 40 ish kfx is like 40 on the dot 450r is ussuly 38 ltr is about 37 obviously all bikes are different and sometimes you get lemons
Jgringo
11-28-2007, 08:50 PM
haha... well damn! 80 horsepower!!! thats rediculous....
Idaho_Outlaw
12-05-2007, 05:14 PM
Hey gringo I make 78 with my stock bore it's 58 hp with 37 ft lb and with a 25 shot of nitrous I only gain 20hp on the dyno and about 8 more ft lb's torque.
And dont give me the wine and cry about you dont have that much power all the time with NO2. you wouldnt have 80+ with a turbo bike either becuase they become almost to much to enjoy. 80+ is great for hillshooting or flat drags but it'a kinda twitchy for duning and will kill ya on trails. just my 2 cents

Heres an article on Some of Brad Heuwagen work.

http://www.musclemustangfastfords.com/features/0301MM_silver_turbo_1987_mustang/index.html

Heres is a link to YFZtech there is another thread some where in the engine section.
speedy
12-20-2007, 12:21 AM
Where do u get a turbo kit at for a Yfz 450??