my dyno sheet

[bluetrx]

heres how my dyno session turned out this weekend. i made a little less hp than i expected, but way more torque than i expected. i guess i have some serious mx style porting.

the bike is '86 250r
4mil stroke
5mil long rod
bored to 69mm (i cant remember what stock is)
pro design cool head
ported cylinder (the side says EP '99)
keihin pj 38mm carb
k&n filter, no air box
fmf fatty gold series pipe
fmf power core II silencer

[bluetrx]

heres pics of the biike

[bluetrx]

and

[spdygonzalez450]

nice quad and nice numbers, one day i will dyno my quad.

[LT250RMan]

What CC of dome are you running in that cool head ?

[RedRider23]

bored to 69mm (i cant remember what stock is)


i believe it's roughly 272cc.. not including the stroker crank.

[LT250RMan]

I'm talking about the size of dome in the head, not the engine size in CC's.

[RedRider23]

yes i know you are talkin about the domes in the cool head....

what i'm talking about is... bluetrx said the motor was bored to 69mm.... and he said he didnt know what cc's that came out too.. so that is why i wrote that.

[GPracer2500]

Nice 250r.

[LT250RMan]

Originally posted by RedRider23
yes i know you are talkin about the domes in the cool head....

what i'm talking about is... bluetrx said the motor was bored to 69mm.... and he said he didnt know what cc's that came out too.. so that is why i wrote that.

Sorry man I thought you were talking to me.

[TheNewn]

Sure doesn't seem like very high HP numbers...

I think that Pipe might be holding you back. Should be able to get near 50 with that much done to the motor...

[RedRider23]

bluetrx... give us some more details on this pull you did... was you running slicks? or knobby's?

those are good numbers for a stock jug bike..

LT250RMAN... it's cool buddy.. we're all friends in this game. lol

[bluetrx]

did this dyno session at craz e dealz in north bend oregon. the operator put on "dyno tires" they were hoosier radials. the cool head dome started out as a 23cc i think but compression was way too high (over 300 psi) so i had the combustion chamber machined larger to get compression down to 225psi. i know my 75.6 mm stroke and 69mm bore makes my bike a 283 what i couldnt remember is what stock bore was. i love the way my bike runs it rolls onto the power band pretty smooth and pulls hard right from the bottom. do you know if i put a horsepower pipe on it how much i should expect to lose in torque?

you should be geting alot more then that i have seen stock quads get more ???:confused:

i think the test is wrong

[bluetrx]

what stock bikes have you seen making better than 42hp. i did get a chance to race a couple of stock 450s, a yfz and a trx at winchester bay this weekend and killed them, beat them by at least 10 bikes no joke. the guy on the yfz said he was having trouble keeping his front end down with the stock length swingarm, the guy on the trx just left.

[machwon]

bluetrx, I would wonder if the cylinder was ported for a std. stroke motor and you now have a stroker crank. The porting would be different when using that crank and can make a big difference. Based upon your dyno graph I'm guessing you don't have much exhaust duration and a lot of tranfer duration.
I'm also not a fan of FMF pipes. I did a 4mm stock cylinder at .060 over and it had something like 32 torq and 51 hp. I think its posted up in the dyno forum here.

[fasterthantim]

everyone replying to bluetrx. do NOT believe one thing this dirt bag says!! as for you bluetrx, why dont you come over here and say that to my face!!?? you know you dont even have a quad. you took that picture of my quad the same day i caught you spying on me in the shower. i cant believe you have the audacity to come on this forum and lie to all the men woman and children who frequent this establishment.

##$$%%^^&@#$%&* you son of a #$%^@ dirt bag ***^$t

[Aceman]

Sounds like fasterthantim and bluetrx are going through a bad breakup...:rolleyes:

[RedRider23]

I dont care who you are... thats funny right there lol:D

[LT250RMan]

Originally posted by fasterthantim
you know you dont even have a quad. you took that picture of my quad the same day i caught you spying on me in the shower.

##$$%%^^&@#$%&* you son of a #$%^@ dirt bag ***^$t


:huh... WTF

[bluetrx]

hey fasterthantim try to keep all that on the dl or ill post the pics of you in the shower i got that day. shouldnt your name be almostasfastastim?

[RedRider23]

bluetrx and fasterthantim are from the same town... i bet they go riding out in the backwoods of OR. And fasterthantim stops to take a break... and says to bluetrx.... i hear banjo music!!!!!

bluetrx comes back to fasterthantim and says.... You sure do have a pretty mouth!!

Deliverance!

[fasterthantim]

we are from the same town. just because he fell in love with me and moved to try and be closer.

sorry guys, you wont get the pleasure of seeing me in the shower cause blue wont part with his most prize possession. im sure he wouldnt want any competition.


















and that is how you successfully hijack a thread;) ;)

[Aceman]

Originally posted by RedRider23
bluetrx and fasterthantim are from the same town... i bet they go riding out in the backwoods of OR. And fasterthantim stops to take a break... and says to bluetrx.... i hear banjo music!!!!!

bluetrx comes back to fasterthantim and says.... You sure do have a pretty mouth!!

Deliverance!

The worst part is........they're probably brothers!

[bluetrx]

fasterthantim is just jealous because he has the slowest quad in the crew. fasterthannoone.

[fasterthantim]

oh ya well, your name should be slowerthanasnail, so there!

[bluetrx]

fasterthantim do you have any comments on the dyno sheet?:devious:

Originally posted by bluetrx
fasterthantim do you have any comments on the dyno sheet?:devious:

a stock 250r has 40 hp ABOUT so????????
they ****ed somthin up i bet your bike has alot more im not disin you bike its bad@$$ but i would say the sheets are wrong so go have it retested or get your money back my guess is your bike has about 56 to 60 hp

sorry but THERE IS KNOW WAY THAT TEST IS AT ALL RIGHT

[LT250RMan]

Originally posted by 450killer265R
a stock 250r has 40 hp ABOUT so????????
they ****ed somthin up i bet your bike has alot more im not disin you bike its bad@$$ but i would say the sheets are wrong so go have it retested or get your money back my guess is your bike has about 56 to 60 hp

sorry but THERE IS KNOW WAY THAT TEST IS AT ALL RIGHT


Hey man are you dreaming ? A stock 250R has no where near 40 hp they have around 28-30 hp stock.

[GPracer2500]

The dyno sheet looks legit to me. Most likely its making peak power at 6.5k (instead of making more peak power at a higher rpm) because of the porting/stroking/pipe/etc combination.


Just for comparison, the owner of this bike says it has:

OEM cylinder with my own porting
Cool Head with custom cut dome at ~ 21.5 cc (15.16:1 UCCR)
Keihin 38 PWK A/S carb
Open K&N filter attached to stock airbox to carb boot
VF3 reeds
Wiseco piston
+4mm crank with 130.3 mm rod
ESR TRX 11 center mount pipe
CR ignition with CR Dyna CDI
Track Tek TT111 fuel with Castor 927 at 32:1

http://www.trx450r.org/forum/uploads/monthly_01_2008/post-3067-1200938935.jpg
[test and info courtesy of Buttermilk]



Notice the difference in how the curves are shaped and at what RPM things are happening? Maybe bluetrx would rather have strong, early power instead of 55 hp 2000rpm after his current peak [shrug]. Peak hp isn't everything. The area under the curve is important too.

[bluetrx]

thanks gpracer thats a great comparison, the specs sound alot like my bike. i forgot to mention that i am also running vf3 reeds and i also have a cr ignition. the only diffrences are the carbs mines a pj his is a pwk, the pipes fmf vs esr, and the porting. i think your right about my porting, i dont think the better carb and pipe would make such a huge diffrence. i have been thinking about getting a 44mm lectron carb, but it sounds like a cylinder swap might be a better idea right now.

[fasterthantim]

Originally posted by 450killer265R
a stock 250r has 40 hp ABOUT so????????
they ****ed somthin up i bet your bike has alot more im not disin you bike its bad@$$ but i would say the sheets are wrong so go have it retested or get your money back my guess is your bike has about 56 to 60 hp

sorry but THERE IS KNOW WAY THAT TEST IS AT ALL RIGHT

ive dynoed at the same shop with another friend and the dyno operator is competent. my 450r made 47hp 31tq and my friends DASA made 51/30. i think the dyno is a little stingy but they dont all read the same.

i guess we cant all have 100 horse like your 265
:rolleyes:

Originally posted by fasterthantim
ive dynoed at the same shop with another friend and the dyno operator is competent. my 450r made 47hp 31tq and my friends DASA made 51/30. i think the dyno is a little stingy but they dont all read the same.

i guess we cant all have 100 horse like your 265
:rolleyes:

lol yeah i guess your right... not everyone can have 100 hp
:rolleyes:

o yeah its not a 265 anymore its a 280 somthing...

but i dont mean to sound like i know im right i can be wrong but i just thot they had alot more hp then that i meaan R's have now power an are fast as hell so idk

[fasterthantim]

when i dynoed there i was a little bummed about the power numbers. i expexted to break the 50hp mark. it didnt happen, but i am really happy with how my bike runs. i dont get beat by many.

i am guilty of caring what the dyno says like many others, when in reality its a very good tool for tuning but doesnt always show the whole picture.

[Yeahitsfast]

what ever...Banshee's rule and 250's well they are just slow...rofl

[fasterthantim]

banshees can be very fast. i have seen "drag" banshees spank very fast sport bike motored quads easily. a stock banshee is nothing to brag about.

i hope you are kidding about your little "Banshee's rule and 250's well they are just slow...rofl" statement.

to each his own i suppose. imho banshees are heavy piles of bad handling, unimpressive power bands.

[Yeahitsfast]

Thats ok you can be wrong if you want to be..we cant all be smart thats why they made 450's for ppl that have gay tendencies and like to shower nude in front of other men..we all know how you pay for your after market parts and well thats your life so have fun with that...lol

[fasterthantim]

i wasnt showering in front of anyone. i caught him spying on me! he is the one with gay tendancies! however, he did pay me for his viewing pleasure. technically, i guess, you are right. i did use the money for parts.

this disproves your theory. i wisely invested the money blueperv gave me in my quad.

therefore, smart people can ride 450r's!!

[Yeahitsfast]

ROFL!!!! ok ok thats good...i guess your all right after all...lmao bluetrx sorry about your luck man

[LT250RMan]

Originally posted by fasterthantim
i wasnt showering in front of anyone. i caught him spying on me! he is the one with gay tendancies! however, he did pay me for his viewing pleasure. technically, i guess, you are right. i did use the money for parts.

this disproves your theory. i wisely invested the money blueperv gave me in my quad.

therefore, smart people can ride 450r's!!


He payed you..LOL, Sounds like you both have gay tendancies.

[bluetrx]

fasterthantim i know you are just a confused hermaphrodite, i dont know what kind of disgusting freak show it would be where people would pay to see you showering. just please dont try to drag me into your perverted lifestyle.

[Yeahitsfast]

yeah what he said!!! lol what is this thred about anyways?

[fasterthantim]

Originally posted by bluetrx
fasterthantim i know you are just a confused hermaphrodite, i dont know what kind of disgusting freak show it would be where people would pay to see you showering. just please dont try to drag me into your perverted lifestyle.


well this little statement should prove to everyone that you DID spy on me in the shower. how else would you know that im a hermaphrodite??

and, obviously you know exactly what kind of freak show it would be. you were first in line!

[Yeahitsfast]

So then what your saying fasterthantim is that you knew there was a line of guys waiting for you to get in the shower and you where more than willing to....ermmm ok i dont need to go any farther :eek2: :huh

[fasterthantim]

stevie
you were second in line! remember when i had to tell you to stop pushing blue around and wait your turn?

[Yeahitsfast]

Fasterthantim.....you have a pretty mouth..mmmm