Yz144 hp?

[twsnow]

I have a yz144 it has a fmf rev pipe and shorty silencer,I am wondering how much hp it has.Can anybody tell me even if its just a guess. :blah: :laugh:

 

[twsnow]

Oh its an 01 if that matters

 

[steve125]

In a poor state of tune around 35HP. The last dyno on mine was 39.2. My goal this fall is to hit 40.

 

[twsnow]

Thanks!!!!Wow i think thats more than my dads xr400!

 

[Studboy]

More peak HP but the torque numbers especially down low will be WAY down from an XR400!

 

[john3_16]

YZ144 sounds like a 250f beater. :yeehaw:


How about a review ?

 

[twsnow]

I would but I have only ridden it twice maybe later when I have more time on it!!!

 

[raceready99]

Well I can give you a decent review. I have an 02 with just a 134. But I also have a FMF fatty and short combo, V-force 3, and a scary fast power now system. The torque is very very good for only a 125, I have to fight to keep the front wheel down out of corners, and last time I rode it, I blew past a RM250 like it was sitting still. The power to weight ratio is very well and it works. Any questions.. Just ask..

 

[justinator]

wow if a 144 makes that much horse anyone know what an 02 yz250 with pc works pipoe and 304 shorty silencer would be pushing???

 

[rookie517]

how is the reliability??

need to resleeve??

 

[Pardy]

ya i was wondering if the reliability and expected life of the engine would decrease when you bore a 125 to that size.

 

[twsnow]

I bought this used and I dont need a top end yet but when I do were do I get one?
It was done by eric gorr.

 

[twsnow]

OH yea I want to do it myself does anybody have a est price of the top end too

 

[John Cena]

wow if a 144 makes that much horse anyone know what an 02 yz250 with pc works pipoe and 304 shorty silencer would be pushing???

I'm not sure but here's some stock 2000 numbers.

2000 HONDA CR250R
44.7 hp @ 8500 rpm

2000 KAWASAKI KX250
45.5 @ 7500 rpm

2000 SUZUKI RM250
42.4 hp @ 7400 rpm

2000 YAMAHA YZ250
43.7 hp @ 7300 rpm

2000 KTM 250SX
39.7 hp @ 7700 rpm