Dyno Numbers 2000 zx9r - Sportbike Forum: Sportbike Motorcycle Forums
 
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post #1 of 5 (permalink) Old 06-16-2000, 09:24 AM Thread Starter
dj6
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Location: NCT,ohio,usa
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Question

Hi guys I just got my bike dynoed and was really hurt
and mad. and that's putting it gently. So I'm trying to
get some feedback on stock zx9r 2000 dyno nubers from
others. My bike only pulled 118 ponies with 4th gear roll
on. So after you pick yourself off the ground from
laughing so hard maybe you can help me. I will say back
when I had the bike first service I was hearing an engine
noise and the dealership said that's what it's suppose to
sound like but after complaining more they did some
measurements on the right side of engine and they said
KAWI waunted them to re-sleeve it whatever that
means. I'm just wondering if I loss some engine
performance along the way. Because 1 I know anytime
you mess with a engine it's never the same. but I also
know every bike isn't going to run the same numbers. OH
yeah I followed the manufact. break-in. thanks.


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post #2 of 5 (permalink) Old 06-16-2000, 09:37 PM
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re-sleeving it should help, i don't know what the 9's cylinders are like, but most have sleeves that can be replaced in essense giving you a new bottom-end (assuming they'll do rings too).

118 can be a very real number too (i'd doubt it). my 750 did 118.6 on the dyno. magazine numbers are usually a little bit high. when it's resleeved, break it in right again. be sure to use varying rpm. try to ride twistee roads, but use higher gears to keep the r's down. once broken in (not really). dyno it again.

the first run will be weak as hell (because it's not broken in until it gets real pressure inside), but they'll go up. my bike went up 4 horse in three runs on the dyno. anyway, i'd expect in the high 20's low 30's. 118 is pretty sickly.

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post #3 of 5 (permalink) Old 07-24-2000, 05:12 PM
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Cool

I put my 2000 ZX9r on a dyno (Dynojet Model 250 Dyno) this past weekend and i got 139.4 SAE horsepower

Slip-on Muzzy Oval, Shimed the jets and adjust the air/fuel screws.


<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by dj6:
Hi guys I just got my bike dynoed and was really hurt
and mad. and that's putting it gently. So I'm trying to
get some feedback on stock zx9r 2000 dyno nubers from
others. My bike only pulled 118 ponies with 4th gear roll
on. So after you pick yourself off the ground from
laughing so hard maybe you can help me. I will say back
when I had the bike first service I was hearing an engine
noise and the dealership said that's what it's suppose to
sound like but after complaining more they did some
measurements on the right side of engine and they said
KAWI waunted them to re-sleeve it whatever that
means. I'm just wondering if I loss some engine
performance along the way. Because 1 I know anytime
you mess with a engine it's never the same. but I also
know every bike isn't going to run the same numbers. OH
yeah I followed the manufact. break-in. thanks.


<HR></BLOCKQUOTE>



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post #4 of 5 (permalink) Old 07-25-2000, 04:45 AM
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It's probably got a lot to do with the dyno but that doesn't sound right to me. That's like 12 hp short of what most other people are getting.

Take it too another dyno.

Ian

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post #5 of 5 (permalink) Old 08-11-2000, 07:58 PM
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You can take 2 identical bikes and dyno both of them on the same dyno in the same conditions and they more than likely will have different readings. Every motor, when machined, has specific tolerences... plus OR minus 0.01" say on a part like the head for example... That will not only effect your compression but the amount of displacement. If you got a bike with the head milled on the thin side (+0.01") you will have higher compression and will make higher horse. You also can run it on the dyno one day while it is raining and run it again a week later on a cooler, more arid day on the SAME dyno and get two completely different readings. could be 118 while raining and 124 when it is cool.

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[This message has been edited by Kahuna (edited September 08, 2000).]
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