how much h.p

[bryan70546]

just curious my set-up is a 440 wiseco kit ,jetted ,fmf full kit ,and the edelbrock 440 carb and a open lid with a uni filter.thats all i really know i got the bike used.

[Ruby Soho]

probly around 40

[bryan70546]

Originally posted by Ruby Soho
probly around 40


thanks is that a good hp number over stock , i hate to sound like a newb but this is my first real quad , i have had dirtbikes and the old oddesey .and a pilot .but that about it.

[tar]

Originally posted by bryan70546
thanks is that a good hp number over stock , i hate to sound like a newb but this is my first real quad , i have had dirtbikes and the old oddesey .and a pilot .but that about it.

Yes if those numbers are correct that is perty decent!

[Pipeless416]

i would think youd be running about mid to low upper 30's. whats the compression ratio of the piston?

[Old Head]

Originally posted by bryan70546
thanks is that a good hp number over stock , i hate to sound like a newb but this is my first real quad , i have had dirtbikes and the old oddesey .and a pilot .but that about it.

yea stock is only like 25 to 28 hp

[Ruby Soho]

stock is 27hp im pretty sure. Im at low 30's with my 440.. because i have a stock exhaust.

[Chin_Chilla]

Originally posted by bryan70546
just curious my set-up is a 440 wiseco kit ,jetted ,fmf full kit ,and the edelbrock 440 carb and a open lid with a uni filter.thats all i really know i got the bike used. I would say you are at roughly 37-39.

Just to break 40HP requires FCR, port and polish, high compression, etc etc.

[bryan70546]

Originally posted by Ruby Soho
stock is 27hp im pretty sure. Im at low 30's with my 440.. because i have a stock exhaust.
Thanks everyone for the replys .like I said before i got the bike used the fellow show me all the recipts off the work done if i can remember i think its either 11 or 12 on the compression or something to that nature , I cant really be sure because I am 155 miles in the gulf of mexico @ work .:( .I plan on getting the port and polish and adding Stage 3 cams also. is thier anything else i would need to make the engine more bullet proof , i keep reading something about the head studs stripping out .any advice you guys can give me and possible maybe a few links to venders .i have been using ebay to get most of my parts like tires and rims , brakes stuff like that .i will post some before and after pics when i am done with it.
Thanks everyone
Bryan

[Franky G]

40 seems a bit high my 460 does 48HP it built to the max well almost !

[oldskoolex400]

Originally posted by Franky G
40 seems a bit high my 460 does 48HP it built to the max well almost !

i agree, i would say a 440 is around 35-37, no more no less, that is with a 11:1 piston also. its hard to tell you really. if your not really sure what is done then we arent either, but from what u have told us i would say around that hp rating

it also depends on who built it, if it was a backyard job its really hard to tell what kind of power its putting out, if u really want to know get on a dyno.

[bryan70546]

Thanks for the replys it has plenty enough power for me and the bike is very well taken care of for it being a 1999.i was told it was built buy a professional mech .but who knows right.again i was just looking for a ball park number .

[orangeEX]

does anyone who thinks they know actually seen a 440 dyno'd
i would like to know a true ballpark but i have no access to a dyno!!

[400exrapes]

wow really cause on eldebrocks dyno chart or w.e it says the 440 kit with there carbuerator produces 40 hp i would think he might have like 44-45 i know thats alot and you guys are probably right but just sayin

[Chin_Chilla]

Originally posted by orangeEX
does anyone who thinks they know actually seen a 440 dyno'd
i would like to know a true ballpark but i have no access to a dyno!! This is a Tudors Performance 440EX Big Bore kit that was tested out by Off-Road.com.

http://www.off-road.com/atv/projects/400ex/tudors/part2.html

Tudor's Performance designed the TRX440 Midrange Power Big Bore Kit to be reliable and is priced at only $1050.00.

Kit includes the Big Bore Sleeve (installed), JE Forged Tudor's Performance 11.0:1 Piston kit, Midrange Head Porting and Valve Job, Drop-In Midrange Camshaft, Hi-Rev + 1000 RPM Ignition Box and our No-Blow Cylinder & Head Gasket.

Here is a dyno of that same kit...

[orangeEX]

its kinda blurry but it looks like 36 or 38 peak thats not bad for a reliable 400ex i'm impressed.....

[GPracer2500]

Here's a 12.5:1 440 built by GT Thunder compared to stock.

http://www.geocities.com/gtthunder.geo/440exmod.jpg



Here's another test from GT Thunder. No details given other than it's a 440:

http://www.geocities.com/gtthunder.geo/graphpage8.gif

The stock run on the first graph provides a good "baseline" for judging how high or low their dyno reads. Seems like no two dynamometers read exactly the same....