After checking out CT's web site I noticed they had a 505EX. What kind of hp is this motor turning? I've got a IMS440, 12:1 JE, port, XR400 cam, hard-rockers, XR250 cdi, full DMC, no snorkle, 6-1" uni-vents w/stock filter, 45 pilot, 175 main, all else stock and I'm figuring 37-40 ponies. How much more can I squeeze out of this motor? Is a 60 hp EX possible naturally aspirated?

 

im pushing 63 horsepower...13:1,465,custom sleeve, web cam, titanium valves,11,500 rev,39fcr,port and polished,hardend rockers,oversized valves,5-angle valve cut,lightned fly wheel, advanced timing 6 degrees,shaved down the crank in case i decide to stroke it, hotrod (rod),high strength cam chain,custom clutch,custom full big bore exhaust....thats motor

appearance...
chromed frame , 8 inch swing arm,custom painted plastic ,poished and chromed motor,axles,a-arms,etc....

 

and yes its been on the dyno

 

my stock 400 other than a yoshimura full system K&n filter and xr250r revbox made 27.3 rw hp We built a 440 hi compression - wb race cam-
hd valve springs xr250r revbox -quicksilver carb - K&n filter and he had allready a fmf pipe on it and it made 34 rw hp dyne tested ..
WHich is a 33% over stock rw hp ....hope this helps

 

Is that 63HP at the crank or rear wheels?

 

You are not producing enpough jay!! J/K.. I got some mods on the Raptor. Nothing to help performance. I ordered a Durablue Banshee 3+5 axle and they sent me the Wrong one. They were cool about it and is sending UPS to pick it up and They are gonna ship me the right one. Only one problem, its on backorder. My parents bought my bro a new YZ80. It is sweet!!! So I am goin to sell the 400ex I think. My g/f is gonna talk to her dad to buy it. How you like theDMC. email me sometime. I dont know yours. Mine is Papapumpdx@aol.com. You are porbally at st.joe right now.

 

Hey trx465 do you have any pictures of it? I'd love to see what that frame looks like chromed. How much did that run you?

 

465,
Where did you have your's dynoed at? I was wanting to have mine done before I have mine rebuilt this summer.

 

i should have some soon it cost me $250 and that was them stripping it i just gave them the frame

63hp to wheels

 

465,
Where did you have your quad dynoed at????