biffdotorg
VIP Member
Ok, I have done google searches and used the search tool here and am unable to find an answer. So feel free to flame me for not knowing how to use the search function.
A buddy is racing a 1999 Vmax SX500 in an 85hp class race and is smokin' everyone. He is being told he has more than 85hp. We all know that Yamaha has never produced that much Hp in a 500 till the 4-stroke phazers came out. But we cannot find it documented anywhere to prove it.
If we can't, he will be disqualified. Anyone have a HP rating for the liquid 500 engines of that vintage? The Sx500R didn't come out till 2000 right? We had one of those, but I was thinking they were called SX500 before 2000.
As always guys, your help is greatly appreciated. And if you can point me to a documented HP, that would be even better. Hearing your opinions is great as well.
Thank you!
A buddy is racing a 1999 Vmax SX500 in an 85hp class race and is smokin' everyone. He is being told he has more than 85hp. We all know that Yamaha has never produced that much Hp in a 500 till the 4-stroke phazers came out. But we cannot find it documented anywhere to prove it.
If we can't, he will be disqualified. Anyone have a HP rating for the liquid 500 engines of that vintage? The Sx500R didn't come out till 2000 right? We had one of those, but I was thinking they were called SX500 before 2000.
As always guys, your help is greatly appreciated. And if you can point me to a documented HP, that would be even better. Hearing your opinions is great as well.
Thank you!
BornYamaha
Member
They are right. I have a Web link at home I can post later that shows anywhere from 89 to 93 hp depending on the year. They were very close to the 2 cylinder 600s output.
I think there is supposed to be a KW rating on the tunnel, multiply that by 1,36 and you got the HP. I've seen dyno numbers from 87 to 90.
A friend who owns a sxr 500 confirmed that the hp rating on the registration paper is 87 hp.
A friend who owns a sxr 500 confirmed that the hp rating on the registration paper is 87 hp.
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BornYamaha
Member
Here is the link. The right side of the page has 500s from 4 years. The engines are the same in the slightly different models.
http://www.m-performance.com/sidor/dyno_yamaha.htm
http://www.m-performance.com/sidor/dyno_yamaha.htm
biffdotorg
VIP Member
Thanks guys, this is a great help. I sure do appreciated it!!