PDA

View Full Version : YZ250F


JR
26-02-2005, 10:09 AM
What do you all think I can do to my SM YZ250F, I have had the head ported and a T4 exhaust. I need to make it competetive in AMA.
THANKS,
J.R.

Wobbly
26-02-2005, 10:50 AM
I think you need to talk to muzz 8) :lol:

Muzzard
26-02-2005, 12:35 PM
Look at the camshaft to crankshaft relationship and the timing, then match the mods to a recurved CDI unit. Camshaft profile that of OW01 specifications and look at the flywheel weights, give consideration to the return to wet sump racing engines... :-k
With the correct application these mods will see big HP...
If you have trouble with those changes JR, I can give you more detail as previously discussed... ;)

JR
26-02-2005, 12:41 PM
What is OW01 specifications?

Muzzard
26-02-2005, 12:49 PM
This is a Factory designation for a particular model of Yamaha 4 cylinder engined racer. The same cam profiles are fitted to FZR 750/1000 in 1998 as far as I am aware, otherwise source from camshaft manufacturers in U.S (Hot Cams?)

JR
26-02-2005, 12:53 PM
thanks

Flash
26-02-2005, 04:15 PM
Turbo :D

dicky
26-02-2005, 05:37 PM
nitrous, or just NOs stickers, they are just as good.
and some blue neon lights, they're good too.

:lol:

dicky
<kill all ricers>

Flash
26-02-2005, 05:52 PM
Yeah even add a rear wing and a playstation and wammo your fast..

Muzzard
26-02-2005, 07:01 PM
Hey Dicky, Does that mean my red LED accent lights on the wheels and in the airbox shining on my polished friggin everything will really make it quicker? I know it does better wheelstands since I put em on! :lol:

Flash
26-02-2005, 07:56 PM
Yep your gettin it now :lol:

Wobbly
26-02-2005, 10:06 PM
I didn't see much wrong with the one you did on the way back to springvale road last weekend 8)

Muzzard
26-02-2005, 11:20 PM
I was practising in the industrial estate as usual on Saturday arvo's, managed to ride a wheelstand today into top gear and for over a kilometre. Was a bit unstable as the speed is pretty high to keep the wheel up there and wind plays a big factor. Trying to get comfortable for my attempt at the Westgate! :D

Flash
27-02-2005, 07:11 AM
Whats this about the westgate?

dicky
27-02-2005, 09:37 AM
We seem to have thread-jacked JR's post, I'll start a new one.

dicky.