Dyno post for Bejon

[Solracer]

Here are the results....about on par for a stock bike with 34mm carbs instead of 36's.......Im actually a lil supprised to see a 16 year old bike perform this well, so was the dyno technician. He actually says I can squeeze out a bit more, because i have the carbs set up a bit rich......

BTW, THe black line is 93 gas from wal mart
The red line is ultimate 4 from VP RACING (8 bux a gallon)

I paid 80 for 9 runs....

base price is 55 for 3-5 runs

pasadena cycle

http://yp.yahoo.com/py/ypMap.py?Pyt=Typ&tuid=8040043&ck=983064818&tab=B2C&tcat=7843852&city=Pasadena&state=TX&uzip=77502&country=us&msa=3360&cs=4&ed=IpR77q1o2TxAGotzQWVWuf0j1D2z.Cu1uD7M1S_AU2ZI&stat=:pos:0:regular:regT:1:fbT:0

http://motohouston.com/chris/Dyno%20run%20jan05/750dyno12.JPG
http://motohouston.com/chris/Dyno%20run%20jan05/750dyno2.JPG
http://motohouston.com/chris/Dyno%20run%20jan05/750dyno32.JPG
http://motohouston.com/chris/Dyno%20run%20jan05/750dyno4.JPG
http://motohouston.com/chris/Dyno%20run%20jan05/750dyno5.JPG
http://motohouston.com/chris/Dyno%20run%20jan05/750dyno6.JPG
http://motohouston.com/chris/Dyno%20run%20jan05/750dyno7.JPG

:notworthy: :notworthy: :notworthy:

[CarbonJames]

got mine done saturday, it was a bit dissapointing but it is running real rich, and it needs a tune up,,, filter cleaning, check the plugs, sinc the carbs, and what ever else.. but overall it was ok ....

[CBR600RR]

thats awesome. but why did u do 9 runs? just to see consistency or what?

i just need to do 2. One before my pcIII and one after its installed. I'll probably just install it right there, bring my tools with me, cause its 40 miles from my house.

[CarbonJames]

did mine at HoH for $30 did 5 runs...

[CBR600RR]

so much closer, thanks for that input carbonR1

[Solracer]

did mine at HoH for $30 did 5 runs...
30 for 5 eh? damn thats good.!

[Solracer]

got mine done saturday, it was a bit dissapointing but it is running real rich, and it needs a tune up,,, filter cleaning, check the plugs, sinc the carbs, and what ever else.. but overall it was ok ....
yeh, need to retune and lean mine out a bit more also..... did they use a gas anylyzer on your bike?

[CarbonJames]

got mine done saturday, it was a bit dissapointing but it is running real rich, and it needs a tune up,,, filter cleaning, check the plugs, sinc the carbs, and what ever else.. but overall it was ok ....
yeh, need to retune and lean mine out a bit more also..... did they use a gas anylyzer on your bike?


hell i guess, they stuck some copper tube with a hose attached to it into the pipe before he started so i assume that is what it was,, ,.

yeah it was pretty cheap, the only badk thing about the whole deal was that the dyno was a dynojet.. that i didnt like too much, but nevertheless it was fun havin it dyno'd.. and it was pretty cheap also... the power that the dyno said it was making may not have been 100% accurate but at least i know that it is running rich and needs to be adjusted...

[CBR600RR]

once again, why is it that u get so many dynos at one time? is it to see consistency, or do u actually tune the bike in between dynos?

[Solracer]

Well, yeh, you can tune it inbetween. On yours if you had a Power commander it would be easy and cheap to tune yours, on my carbed bike however, its not so easy and not cheap to have the guy tune min eon the fly. Now of course half of my runs were done on race gas. and other half was 93.

[CarbonJames]

did the octane diff. make a power diff.. prolly not much..

[CBR600RR]

probably not much, i wonder if i put 87 octane like suggested if it will be the same as 91/93 octane.

[Solracer]

its not all in the octane ,the "ultimate 4" is only 92 octane, but its leaded and oxygenated, the "103" from VP that im running now is 98 oct, oxygenated and unleaded.

price diff is Ultimate 4 is 8/gallon
103 is 6/gallon

and so far i think the 103 is just as good for my bike.

[CBR600RR]

our bikes can run leaded fuel?

[CarbonJames]

you should at least run a 90 or 90+ octane

[Solracer]

our bikes can run leaded fuel?


yes sir. You dont have an o2 sensor now do you? :)

[paniro187]

but sol there s are reason the ama boys are running ultimate 4 and theres a reason it costs more. Cause it's better and is hp in a bottle.

[Solracer]

Well, I agree, the diff in just changing fuels is remarkable, but Im going to dyno the bike with both fuels and see what happens because the "butt dyno" reads that it isnt much more of a power dff if any between the two fuels (Ultimate 4 and "103" )..... Stay tuned.

[dhdrider]

For what it's worth, here is a good read on different types of gas.* Don't waste your money on race gas unless you've done lots of internal engine mods.* If you're just running pipe & power commander stick to super unleaded pump gas...

Quote taken from RC51.org
We've pretty much done the homework for you when it comes to testing various grades & brands of race fuels in the RC51 (or any other motorcycle for that part)
In hours & hours of dyno testing & Powercommander map building several key points were discovered some we intentionally set out to test others just came about on their own:

1. Standard Race Fuel (VP C12, C14, Sunoco 104, 100LL AvGas even high octane pump gas 96 or 100) ran straight on a stock RC51 motor will actually lose horsepower.

This is argued by many because the throttle response becomes crisper & is often mistaken for more performance when in truth the bike is making less power on the dyno sometimes by as much a 4-6hp. Many race fuels are designed for higher compression engines >13.0:1 & simply do not perform well in low compression motors like our RC51 (10.8:1). As has been noted many times on just about every sportbike forum on the net more octane does not mean more power! It simply means more resistance to detonation. If a higher octane fuel happens to make more power in a motor it is because of the additives in the fuel having the potential for more energy not just because it is higher octane.

What can be beneficial, but not always so is a blend of about 25/75 of race fuel & pump gas (1 gallon of race fuel added to 3 gallons of premium pump gas) which has been shown to consistently yield a horsepower or two. However I strongly urge you to stay away from the race fuels on a street bike if for no other reason than the extra contaminants it will leave in your motor. For me the cost of premature wear on the motor is not worth the negligible horsepower gains.

2. Oxygenated Race Fuels (Nutec #4, VP MR1 etc) can add 3-5hp without any fuel or mapping changes at all & 5-10hp sometimes even more on a stock motor with proper mapping & lots of playing around with the ignition timing. Some oxygenated fuels benefit from retarding the ignition while others benefit from advancing it.

The catch is that A. the stuff is really expensive usually about $15-$20 a gallon & B. it is highly corrosive & must be drained from your tank after each race weekend to keep it from eating parts of your fuel system. There are also horror stories of racers getting a bad batch of the stuff & ruining a set of carbs or throttle bodies due to a varnish that settles onto the components that is basically impossible to remove. I have actually witnessed this myself once & could not believe how bad it actually was.

There are some newer oxygenated fuels out now such as VP MR9 & Ultimate 4 which is claimed to be much less caustic to fuel system components (o-rings, gaskets etc..). I have sampled the MR9 & was very impressed with the performance, but have not tried the Ultimate 4 yet.

3. In testing various grades of pump gas I consistently found that 87 octane fuel makes 1-2 more horsepower than those exact same bikes ran on Premium 93 octane. We tested five liter class motorcycles (97 CBR900RR, 02 Honda 919, 2000 RC51, 2000 GSXR750 & an 02 R1) & only the R1 seemed unaffected by the octane of the fuel. Now I am certainly not going to tell you to run less than the recommended octane (92) in your RC51 as the specific needs of the motor dictate that a higher octane fuel is needed, but the results are blatant in that more octane does not mean more power.
It is only fair that I note that when testing the pump gas on some of the 600's (Yamaha R6 & the GSXR600) the inverse was true in that they did lose a little horsepower on the 87 octane vs the 93 octane. Most likely because of the higher compression ratios of the smaller motors, however the CBR600F4i gained a little horsepower.

Additional notes (not tested on the dyno): Never add any type of octane boosters or fuel system cleaners to your motorcycle tank. Additives sold in auto stores are designed to treat anywhere from 16-22 gallons of fuel from one small bottle of concentrate & more often than not those chemicals are very hazardous to your motorcycles fuel system especially if the mix ratio is not absolutely perfect. I cannot tell you how many carb jobs I have done over the years because some yahoo dumped half a bottle (or more) of octane booster into his fuel tank. The bike runs great for awhile but within a day or two a varnish starts to set up on the fuel system components & it just gets worse from there. Run quality fuels & stay away from the additives period.

[Coonassme2]

Thanks dhdrider, pretty good info there. I wondered about a few of those things just never bothered to ask anyone. Now I know.

[Capafool]

about every 3 or 4 months I use about a quarter bottle of fuel injector cleaner when fillin up w/gas and I have never had any trouble. I think it made for "fuel injectors" so its meant to e used that way. Just putting one or half a whole bottle is way tooo much cuz this is some strong stuff.

[H2447INTX]

this is my dyno slipp from wrw raceing in cypress!
88.24 true rear wheel hp, to the ground! love it

[paniro187]

this is my dyno slipp from wrw raceing in cypress!
88.24 true rear wheel hp, to the ground! love it
that's the only dyno i trust. a dyno jet dyno would have told you 115hp to the ground. :eh:

Mine hit 107 at the ground on the eddie current dyno. and 128 to the ground on the dynojet dyno. :keke:

[CarbonJames]

this is my dyno slipp from wrw raceing in cypress!
88.24 true rear wheel hp, to the ground! love it
that's the only dyno i trust.* a dyno jet dyno would have told you 115hp to the ground.* *:eh:

Mine hit 107 at the ground on the eddie current dyno.* and 128 to the ground on the dynojet dyno.* *:keke:

so you're sayin my Dynojet # is higher than actuall? :crying:


im going to WRW when she's finished..

BTW i'll post a pic of her that i took saturday...(warning) She's pretty naked tho,,

[paniro187]

this is my dyno slipp from wrw raceing in cypress!
88.24 true rear wheel hp, to the ground! love it
that's the only dyno i trust.* a dyno jet dyno would have told you 115hp to the ground.* *:eh:

Mine hit 107 at the ground on the eddie current dyno.* and 128 to the ground on the dynojet dyno.* *:keke:

so you're sayin my Dynojet # is higher than actuall? :crying:


im going to WRW when she's finished..

BTW i'll post a pic of her that i took saturday...(warning) She's pretty naked tho,,
is she wearing assless chaps??? take her to wrw and let him dyno tune that bitch. that r1 on that dyno will be putting out about 125-130hp to the ground. dyno jets read higher.

[H2447INTX]

YES dyno jet suck get your hope up and all mine runs like 99.8 on a dyno jet ! big # do not help when raceing!

[CarbonJames]

this is my dyno slipp from wrw raceing in cypress!
88.24 true rear wheel hp, to the ground! love it
that's the only dyno i trust.* a dyno jet dyno would have told you 115hp to the ground.* *:eh:

Mine hit 107 at the ground on the eddie current dyno.* and 128 to the ground on the dynojet dyno.* *:keke:

so you're sayin my Dynojet # is higher than actuall? :crying:


im going to WRW when she's finished..

BTW i'll post a pic of her that i took saturday...(warning) She's pretty naked tho,,
is she wearing assless chaps???* take her to wrw and let him dyno tune that bitch.* that r1 on that dyno will be putting out about 125-130hp to the ground.* dyno jets read higher.*


if thats all she has then im sellin.. if we could get forced air for my RamAir, she'd be reading higher...

[H2447INTX]

what size bike do you have and what was the dyno #, if its from 80-90 devide it by 1.12 and that is about your true rwhp and if it is 90-100 devide it buy 1.15 and that is your true hp look it up http://www.factorypro.com/
go to the left hand side and look for true hp scale and it gives #s forall kinds of bikes and yrs! nice site

[paniro187]

what size bike do you have and what was the dyno #, if its from 80-90 devide it by 1.12 and that is about your true rwhp and if it is 90-100 devide it buy 1.15 and that is your true hp look it up http://www.factorypro.com/
go to the left hand side and look for true hp scale and it gives #s forall kinds of bikes and yrs! nice site
that's where i got the 125-130 number. it's good number. ama full fatory zx6r from like 02 or something was barely pushing 100 hp to the ground.

[Solracer]

Im going to bring mine BACK to the dyno, after I put my 38's pn and tune em.